init

backend/.coveragerc

@@ -0,0 +1,31 @@
+[run]
+branch = True
+source =
+    users
+    api
+    utils
+    payments
+    communications
+    gallery
+    events
+    blog
+    config
+omit =
+    */migrations/*
+    */tests/*
+    */__init__.py
+    config/settings/*
+    config/urls.py
+    config/wsgi.py
+    config/asgi.py
+
+[report]
+skip_empty = True
+show_missing = True
+precision = 2
+
+[html]
+directory = htmlcov
+
+[xml]
+output = coverage.xml

backend/.gitignore

@@ -0,0 +1,139 @@
+# Django #
+*.log
+*.pot
+*.pyc
+__pycache__
+db.sqlite3
+db.test.sqlite3
+media
+
+# Backup files # 
+*.bak 
+
+# If you are using PyCharm # 
+# User-specific stuff
+.idea/**/workspace.xml
+.idea/**/tasks.xml
+.idea/**/usage.statistics.xml
+.idea/**/dictionaries
+.idea/**/shelf
+
+# AWS User-specific
+.idea/**/aws.xml
+
+# Generated files
+.idea/**/contentModel.xml
+
+# Sensitive or high-churn files
+.idea/**/dataSources/
+.idea/**/dataSources.ids
+.idea/**/dataSources.local.xml
+.idea/**/sqlDataSources.xml
+.idea/**/dynamic.xml
+.idea/**/uiDesigner.xml
+.idea/**/dbnavigator.xml
+
+# Gradle
+.idea/**/gradle.xml
+.idea/**/libraries
+
+# File-based project format
+*.iws
+
+# IntelliJ
+out/
+
+# JIRA plugin
+atlassian-ide-plugin.xml
+
+# Python # 
+*.py[cod] 
+*$py.class 
+
+# Distribution / packaging 
+.Python build/ 
+develop-eggs/ 
+dist/ 
+downloads/ 
+eggs/ 
+.eggs/ 
+lib/ 
+lib64/ 
+parts/ 
+sdist/ 
+var/ 
+wheels/ 
+*.whl
+*.egg-info/ 
+.installed.cfg 
+*.egg 
+*.manifest 
+*.spec 
+
+# Installer logs 
+pip-log.txt 
+pip-delete-this-directory.txt 
+
+# Unit test / coverage reports 
+htmlcov/ 
+.tox/ 
+.coverage 
+.coverage.* 
+.cache 
+.pytest_cache/ 
+nosetests.xml 
+coverage.xml 
+*.cover 
+.hypothesis/ 
+
+# Jupyter Notebook 
+.ipynb_checkpoints 
+
+# pyenv 
+.python-version 
+
+# celery 
+celerybeat-schedule.* 
+
+# SageMath parsed files 
+*.sage.py 
+
+# Environments 
+.env 
+.venv 
+env/ 
+venv/ 
+ENV/ 
+env.bak/ 
+venv.bak/ 
+
+# mkdocs documentation 
+/site 
+
+# mypy 
+.mypy_cache/ 
+
+# Sublime Text # 
+*.tmlanguage.cache 
+*.tmPreferences.cache 
+*.stTheme.cache 
+*.sublime-workspace 
+*.sublime-project 
+
+# sftp configuration file 
+sftp-config.json 
+
+# Package control specific files Package 
+Control.last-run 
+Control.ca-list 
+Control.ca-bundle 
+Control.system-ca-bundle 
+GitHub.sublime-settings 
+
+# Visual Studio Code # 
+.vscode/* 
+!.vscode/settings.json 
+!.vscode/tasks.json 
+!.vscode/launch.json 
+!.vscode/extensions.json 
+.history

backend/Dockerfile

@@ -0,0 +1,34 @@
+FROM python:3.13-slim
+
+# Set environment variables
+ENV PYTHONDONTWRITEBYTECODE=1
+ENV PYTHONUNBUFFERED=1
+
+# Set work directory
+WORKDIR /app
+
+# Install system dependencies
+RUN apt-get update \
+    && apt-get install -y --no-install-recommends \
+        postgresql-client \
+        build-essential \
+        libpq-dev \
+    && rm -rf /var/lib/apt/lists/*
+
+# Install Python dependencies
+COPY requirements.txt /app/
+RUN pip install --no-cache-dir -r requirements.txt
+
+# Copy project
+COPY . /app/
+
+# Create directories for static and media files
+RUN mkdir -p /app/static /app/media
+# COPY ./static/ /app/static/
+
+# Collect static files
+RUN python manage.py collectstatic --noinput || true
+
+EXPOSE 8000
+
+CMD ["gunicorn", "config.wsgi:application", "--bind", "0.0.0.0:8000", "--workers=3", "--threads=2", "--timeout=60"]

backend/README.md

@@ -0,0 +1,38 @@
+# Backend
+
+## Stack
+- Django 5+ with Ninja API routers, JWT auth, and Ninja schemas.
+- PostgreSQL + Redis + Celery + Gunicorn orchestrated via Docker Compose.
+- Traefik handles TLS termination and routing to `/api`, `/admin`, `/static`, `/media`.
+- Metrics exporters (Prometheus, node exporter, PostgreSQL exporter) are wired in `docker-compose.yml`.
+
+## Key apps
+
+| App | Responsibilities |
+| --- | --- |
+| `users` | Custom `User` model, email verification, password resets, soft deletes. |
+| `blog` | Posts, comments, categories/tags, likes, admin delete/restore operations. |
+| `events` | Events, registrations, invitations, registration emails, Celery tasks. |
+| `payments` | Discount codes, payment tracking linked to registrations. |
+
+## API highlights
+- **Authentication** (`/api/auth/*`): register, login, refresh, profile, delete profile picture, deleted users, filtered user lists.
+- **Blog** (`/api/blog/*`): posts/comments, soft delete/restore, likes, categories/tags APIs.
+- **Events** (`/api/events/*`): list, detail, create/update/delete, admin endpoints for event/registration detail and paginated/filterable registrations.
+- **Payments** (`/api/payments/*`): create payment, get by ref, discounts.
+
+## Running locally
+```bash
+docker compose build backend
+docker compose run --rm backend python manage.py migrate
+```
+
+### Tests
+```bash
+docker compose run --rm backend python manage.py test --settings=config.settings.test
+```
+
+### Admin tooling
+- Ninja routers live under `backend/api/views`. Schemas are in `backend/api/schemas`.
+- JWT auth files: `backend/api/authentication.py`.
+- Celery configs in `backend/config/services/celery.py` and tasks (events, users, communications).

backend/api/authentication.py

@@ -0,0 +1,41 @@
+from django.conf import settings
+
+from ninja.security import HttpBearer
+from datetime import datetime, timedelta, UTC
+import jwt
+
+from users.models import User
+
+class JWTAuth(HttpBearer):
+    def authenticate(self, request, token):
+        try:
+            payload = jwt.decode(token, settings.JWT_SECRET_KEY, algorithms=[settings.JWT_ALGORITHM])
+            user_id = payload.get('user_id')
+            if user_id:
+                user = User.objects.get(id=user_id, is_email_verified=True, is_active=True)
+                return user
+        except (jwt.ExpiredSignatureError, jwt.InvalidTokenError, User.DoesNotExist):
+            pass
+        return None
+
+def create_jwt_token(user):
+    """Create JWT token for user"""
+    payload = {
+        'user_id': user.id,
+        'email': user.email,
+        'exp': datetime.now(UTC) + timedelta(seconds=settings.JWT_ACCESS_TOKEN_LIFETIME),
+        'iat': datetime.now(UTC),
+    }
+    return jwt.encode(payload, settings.JWT_SECRET_KEY, algorithm=settings.JWT_ALGORITHM)
+
+def create_refresh_token(user):
+    """Create refresh token for user"""
+    payload = {
+        'user_id': user.id,
+        'type': 'refresh',
+        'exp': datetime.now(UTC) + timedelta(seconds=settings.JWT_REFRESH_TOKEN_LIFETIME),
+        'iat': datetime.now(UTC),
+    }
+    return jwt.encode(payload, settings.JWT_SECRET_KEY, algorithm=settings.JWT_ALGORITHM)
+
+jwt_auth = JWTAuth()

backend/api/schemas/__init__.py

@@ -0,0 +1,31 @@
+"""Aggregate exports for API schemas and shared response payloads."""
+
+from typing import Optional
+
+from ninja import Schema
+
+from api.schemas.auth import *
+from api.schemas.blog import *
+from api.schemas.gallery import *
+from api.schemas.events import *
+from api.schemas.communications import *
+from api.schemas.certificates import *
+
+
+class MessageSchema(Schema):
+    """Basic success response containing a message."""
+    message: str
+
+
+class ErrorSchema(Schema):
+    """Standard error payload with optional details."""
+    error: str
+    details: Optional[str] = None
+
+
+def rebuild_comment_schema() -> None:
+    """Ensure the self-referential CommentSchema is fully initialized."""
+    CommentSchema.model_rebuild()
+
+
+rebuild_comment_schema()

backend/api/schemas/auth.py

@@ -0,0 +1,129 @@
+"""Authentication-related API schemas."""
+
+from ninja import Schema, ModelSchema
+from typing import Optional
+
+from users.models import User
+
+
+class UserRegistrationSchema(Schema):
+    username: str
+    email: str
+    password: str
+    first_name: Optional[str] = None
+    last_name: Optional[str] = None
+    university: Optional[str] = None
+    student_id: Optional[str] = None
+    year_of_study: Optional[int] = None
+    major: Optional[str] = None
+
+class UserLoginSchema(Schema):
+    email: str
+    password: str
+
+class UserProfileSchema(ModelSchema):
+    profile_picture: Optional[str] = None
+    student_id: Optional[str] = None
+    major: Optional[str] = None
+    university: Optional[str] = None
+
+    class Meta:
+        model = User
+        fields = [
+            'id',
+            'username',
+            'email',
+            'first_name',
+            'last_name',
+            'student_id',
+            'year_of_study',
+            'major',
+            'university',
+            'bio',
+            'date_joined',
+        'is_email_verified',
+        'is_active',
+        'is_staff',
+        'is_superuser',
+        'is_deleted',
+        'deleted_at',
+        ]
+
+    @staticmethod
+    def resolve_major(obj):
+        return obj.get_major_display()
+
+    @staticmethod
+    def resolve_university(obj):
+        return obj.get_university_display()
+
+    @staticmethod
+    def resolve_profile_picture(obj, context):
+        """
+        Resolves the absolute URL for the profile picture.
+        `context` contains the request object, which is needed for build_absolute_uri.
+        """
+        request = context['request']
+        if obj.profile_picture and hasattr(obj.profile_picture, 'url'):
+            return request.build_absolute_uri(obj.profile_picture.url)
+        return None
+
+
+class UserListSchema(ModelSchema):
+    major: Optional[str] = None
+    university: Optional[str] = None
+
+    class Meta:
+        model = User
+        fields = [
+            'id',
+            'username',
+            'email',
+            'first_name',
+            'last_name',
+            'is_active',
+            'is_staff',
+            'is_superuser',
+            'date_joined',
+            'major',
+            'university',
+        ]
+
+    @staticmethod
+    def resolve_full_name(obj):
+        return obj.get_full_name()
+
+    @staticmethod
+    def resolve_major(obj):
+        return obj.get_major_display()
+
+    @staticmethod
+    def resolve_university(obj):
+        return obj.get_university_display()
+
+class UserUpdateSchema(Schema):
+    first_name: Optional[str] = None
+    last_name: Optional[str] = None
+    bio: Optional[str] = None
+    year_of_study: Optional[int] = None
+    major: Optional[str] = None
+    university: Optional[str] = None
+    student_id: Optional[str] = None
+
+class TokenSchema(Schema):
+    access_token: str
+    refresh_token: str
+    token_type: str = "bearer"
+
+class TokenRefreshIn(Schema):
+    refresh_token: str
+
+class PasswordResetRequestSchema(Schema):
+    email: str
+
+class PasswordResetConfirmSchema(Schema):
+    token: str
+    new_password: str
+
+class UsernameCheckSchema(Schema):
+    exists: bool

backend/api/schemas/blog.py

@@ -0,0 +1,87 @@
+"""Blog API schemas."""
+
+from ninja import Schema, ModelSchema
+from typing import Optional, List
+from datetime import datetime
+
+from blog.models import Category, Tag, Comment
+
+
+class CategorySchema(ModelSchema):
+    class Config:
+        model = Category
+        model_fields = ['id', 'name', 'slug', 'description']
+
+class TagSchema(ModelSchema):
+    class Config:
+        model = Tag
+        model_fields = ['id', 'name', 'slug']
+
+class AuthorSchema(Schema):
+    id: int
+    username: str
+    first_name: str
+    last_name: str
+    profile_picture: Optional[str] = None
+
+    @staticmethod
+    def resolve_profile_picture(obj, context):
+        request = context['request']
+        if obj.profile_picture and hasattr(obj.profile_picture, 'url'):
+            return request.build_absolute_uri(obj.profile_picture.url)
+        return None
+
+class PostListSchema(Schema):
+    id: int
+    title: str
+    slug: str
+    excerpt: str
+    author: AuthorSchema
+    featured_image: Optional[str] = None
+    status: str
+    published_at: Optional[datetime] = None
+    category: Optional[CategorySchema] = None
+    tags: List[TagSchema]
+    is_featured: bool
+    created_at: datetime
+    reading_time: int
+
+class PostDetailSchema(PostListSchema):
+    content: str
+    content_html: str
+
+class PostCreateSchema(Schema):
+    title: str
+    content: str
+    excerpt: Optional[str] = None
+    category_id: Optional[int] = None
+    tag_ids: Optional[List[int]] = []
+    status: str = "draft"
+    is_featured: bool = False
+
+class CommentSchema(ModelSchema):
+    author: AuthorSchema
+    replies: List['CommentSchema'] = []
+    post_id: int
+    post_title: str
+    post_slug: str
+
+    class Config:
+        model = Comment
+        model_fields = ['id', 'content', 'created_at', 'is_approved']
+
+    @staticmethod
+    def resolve_post_id(obj):
+        return obj.post_id
+
+    @staticmethod
+    def resolve_post_title(obj):
+        return obj.post.title
+
+    @staticmethod
+    def resolve_post_slug(obj):
+        return obj.post.slug
+
+class CommentCreateSchema(Schema):
+    content: str
+    parent_id: Optional[int] = None

backend/api/schemas/certificates.py

@@ -0,0 +1,70 @@
+"""API payloads for certificate operations."""
+
+from datetime import datetime
+from typing import List, Optional
+
+from ninja import Schema
+
+
+class SkillSchema(Schema):
+    id: int
+    name: str
+    description: Optional[str] = None
+
+
+class CertificateTemplateOut(Schema):
+    id: int
+    event_id: int
+    event_title: str
+    image_url: Optional[str]
+    skill_ids: List[int]
+    skills: List[SkillSchema]
+
+
+class CertificateGenerationItem(Schema):
+    user_id: int
+    score: int
+    title: Optional[str] = None
+    description: Optional[str] = None
+    skill_ids: Optional[List[int]] = None
+    issued_at: Optional[datetime] = None
+    expires_at: Optional[datetime] = None
+
+
+class CertificateGenerationPayload(Schema):
+    entries: List[CertificateGenerationItem]
+    default_title: Optional[str] = None
+    default_description: Optional[str] = None
+
+
+class UserCertificateOut(Schema):
+    id: int
+    user_id: int
+    user_name: str
+    event_id: int
+    title: str
+    certificate_id: str
+    certificate_code: str
+    score: int
+    score_label: str
+    image_url: Optional[str]
+
+
+class CertificateGenerationResponse(Schema):
+    certificates: List[UserCertificateOut]
+
+
+class CertificateVerificationOut(Schema):
+    certificate_id: str
+    certificate_code: str
+    user_id: int
+    user_name: str
+    event_id: int
+    event_title: str
+    title: str
+    score: int
+    score_label: str
+    issued_at: datetime
+    expires_at: Optional[datetime] = None
+    image_url: Optional[str] = None
+    skills: List[str]

backend/api/schemas/communications.py

@@ -0,0 +1,124 @@
+"""Schemas for communications-related endpoints."""
+
+from datetime import datetime
+from typing import Optional, List
+
+from ninja import Schema, ModelSchema
+
+from api.schemas import AuthorSchema
+from communications.models import (
+    Announcement,
+    NewsletterSubscription,
+    PushNotificationDevice
+)
+
+
+class AnnouncementSchema(ModelSchema):
+    author: AuthorSchema
+    content_html: str
+
+    class Config:
+        model = Announcement
+        model_fields = [
+            'id', 'title', 'content', 'announcement_type', 'priority',
+            'is_published', 'publish_date', 'send_email', 'send_push',
+            'target_audience', 'email_sent', 'push_sent', 'created_at', 'updated_at'
+        ]
+
+    @staticmethod
+    def resolve_content_html(obj):
+        return obj.content_html
+
+class AnnouncementListSchema(Schema):
+    id: int
+    title: str
+    content: str
+    announcement_type: str
+    priority: str
+    author: AuthorSchema
+    is_published: bool
+    publish_date: Optional[datetime] = None
+    target_audience: str
+    created_at: datetime
+
+class AnnouncementCreateSchema(Schema):
+    title: str
+    content: str
+    announcement_type: str = "general"
+    priority: str = "normal"
+    target_audience: str = "all"
+    is_published: bool = False
+    publish_date: Optional[datetime] = None
+    send_email: bool = False
+    send_push: bool = False
+
+class AnnouncementUpdateSchema(Schema):
+    title: Optional[str] = None
+    content: Optional[str] = None
+    announcement_type: Optional[str] = None
+    priority: Optional[str] = None
+    target_audience: Optional[str] = None
+    is_published: Optional[bool] = None
+    publish_date: Optional[datetime] = None
+    send_email: Optional[bool] = None
+    send_push: Optional[bool] = None
+
+class NewsletterSubscriptionSchema(ModelSchema):
+    user: Optional[AuthorSchema] = None
+
+    class Config:
+        model = NewsletterSubscription
+        model_fields = [
+            'id', 'email', 'is_active', 'subscribed_categories',
+            'confirmed_at', 'created_at'
+        ]
+
+class NewsletterSubscribeSchema(Schema):
+    email: str
+    subscribed_categories: Optional[List[str]] = []
+
+class NewsletterUnsubscribeSchema(Schema):
+    email: str
+
+class PushDeviceSchema(ModelSchema):
+    user: AuthorSchema
+
+    class Config:
+        model = PushNotificationDevice
+        model_fields = [
+            'id', 'device_token', 'device_type', 'is_active', 'created_at'
+        ]
+
+class PushDeviceCreateSchema(Schema):
+    device_token: str
+    device_type: str = "web"
+
+class PushDeviceUpdateSchema(Schema):
+    is_active: bool
+
+class PushNotificationSchema(Schema):
+    title: str
+    body: str
+    data: Optional[dict] = None
+    target_audience: str = "all"
+
+class MessageResponseSchema(Schema):
+    """Simple message payload for API responses."""
+    message: str
+    success: bool = True
+
+class AnnouncementStatsSchema(Schema):
+    """Summary statistics for announcements."""
+    total_announcements: int
+    published_announcements: int
+    draft_announcements: int
+    urgent_announcements: int
+    email_sent_count: int
+    push_sent_count: int
+
+class NewsletterStatsSchema(Schema):
+    """Summary statistics for newsletter subscriptions."""
+    total_subscriptions: int
+    active_subscriptions: int
+    confirmed_subscriptions: int
+    recent_subscriptions: int

backend/api/schemas/events.py

@@ -0,0 +1,247 @@
+"""Event and gallery API schemas."""
+
+from uuid import UUID
+from ninja import ModelSchema, Schema
+from pydantic import field_validator
+from typing import Literal, Optional, List
+from datetime import datetime
+
+from api.schemas.blog import AuthorSchema
+from events.models import Event, Registration
+from gallery.models import Gallery
+from payments.models import Payment
+
+
+class EventGallerySchema(ModelSchema):
+    """Schema representing gallery items associated with an event."""
+    uploaded_by: AuthorSchema
+    file_size_mb: float
+    markdown_url: str
+    absolute_image_url: Optional[str] = None
+
+    class Config:
+        model = Gallery
+        model_fields = ['id', 'title', 'description', 'image', 'alt_text',
+                       'width', 'height', 'is_public', 'created_at']
+
+    @staticmethod
+    def resolve_absolute_image_url(obj, context):
+        request = context['request']
+        if obj.image and hasattr(obj.image, 'url'):
+            return request.build_absolute_uri(obj.image.url)
+        return None
+
+class EventSchema(ModelSchema):
+    """Schema providing full event details for API responses."""
+    gallery_images: List[EventGallerySchema]
+    description_html: str
+    registration_count: int
+    absolute_featured_image_url: Optional[str] = None
+
+    class Config:
+        model = Event
+        model_fields = [
+            'id', 'title', 'slug', 'description', 'featured_image', 'event_type',
+            'address', 'location', 'online_link', 'start_time', 'end_time',
+            'registration_start_date', 'registration_end_date', 'registration_success_markdown',
+            'capacity', 'price', 'status', 'created_at', 'updated_at'
+        ]
+
+    @staticmethod
+    def resolve_absolute_featured_image_url(obj, context):
+        request = context['request']
+        if obj.featured_image and hasattr(obj.featured_image, 'url'):
+            return request.build_absolute_uri(obj.featured_image.url)
+        return None
+
+    @staticmethod
+    def resolve_registration_count(obj):
+        return obj.registrations.filter(status__in=[Registration.StatusChoices.CONFIRMED, Registration.StatusChoices.ATTENDED]).count()
+
+    @staticmethod
+    def resolve_description_html(obj):
+        return obj.description_html
+
+
+class EventListSchema(Schema):
+    """Condensed event representation for list endpoints."""
+    id: int
+    title: str
+    slug: str
+    featured_image: Optional[str] = None
+    absolute_featured_image_url: Optional[str] = None
+    event_type: str
+    start_time: datetime
+    end_time: datetime
+    registration_start_date: Optional[datetime] = None
+    registration_end_date: Optional[datetime] = None
+    capacity: Optional[int] = None
+    price: Optional[float] = None
+    status: str
+    registration_count: int
+    created_at: datetime
+
+    @staticmethod
+    def resolve_absolute_featured_image_url(obj, context):
+        request = context['request']
+        if obj.featured_image and hasattr(obj.featured_image, 'url'):
+            return request.build_absolute_uri(obj.featured_image.url)
+        return None
+
+    @staticmethod
+    def resolve_registration_count(obj):
+        return obj.registrations.filter(status__in=[Registration.StatusChoices.CONFIRMED, Registration.StatusChoices.ATTENDED]).count()
+
+class EventCreateSchema(Schema):
+    """Payload for creating events via the API."""
+    title: str
+    description: str
+    event_type: str
+    address: Optional[str] = None
+    location: Optional[str] = None
+    online_link: Optional[str] = None
+    start_time: datetime
+    end_time: datetime
+    registration_start_date: Optional[datetime] = None
+    registration_end_date: Optional[datetime] = None
+    capacity: Optional[int] = None
+    price: Optional[float] = None
+    status: str = "draft"
+    gallery_image_ids: Optional[List[int]] = []
+
+class EventUpdateSchema(Schema):
+    """Payload for updating events via the API."""
+    title: Optional[str] = None
+    description: Optional[str] = None
+    event_type: Optional[str] = None
+    address: Optional[str] = None
+    location: Optional[str] = None
+    online_link: Optional[str] = None
+    start_time: Optional[datetime] = None
+    end_time: Optional[datetime] = None
+    registration_start_date: Optional[datetime] = None
+    registration_end_date: Optional[datetime] = None
+    capacity: Optional[int] = None
+    price: Optional[float] = None
+    status: Optional[str] = None
+    gallery_image_ids: Optional[List[int]] = None
+
+class RegistrationSchema(ModelSchema):
+    """Schema describing a registration entry with event context."""
+    user: AuthorSchema
+    event: EventListSchema
+    discount_code: str | None = None
+
+    class Config:
+        model = Registration
+        model_fields = [
+            'id',
+            'status',
+            'registered_at',
+            'ticket_id',
+            'discount_amount',
+            'final_price',
+            'created_at',
+            'updated_at',
+        ]
+
+    @staticmethod
+    def resolve_discount_code(obj):
+        return obj.discount_code.code if obj.discount_code else None
+
+
+class AdminUserSchema(Schema):
+    id: int
+    username: str
+    first_name: str
+    last_name: str
+    email: str
+
+
+class PaymentAdminSchema(Schema):
+    id: int
+    authority: Optional[str]
+    ref_id: Optional[str]
+    status: int
+    status_label: str
+    base_amount: int
+    discount_amount: int
+    amount: int
+    verified_at: Optional[datetime]
+    created_at: datetime
+    discount_code: Optional[str]
+    user: AdminUserSchema
+
+    @field_validator("discount_code", mode="before")
+    def normalize_discount_code(cls, value):
+        if value is None:
+            return None
+        if hasattr(value, "code"):
+            return value.code
+        return str(value)
+
+
+class RegistrationAdminSchema(Schema):
+    id: int
+    ticket_id: UUID
+    status: str
+    status_label: str
+    registered_at: datetime
+    final_price: Optional[int]
+    discount_amount: Optional[int]
+    user: AdminUserSchema
+    payments: List[PaymentAdminSchema]
+
+
+class EventAdminDetailSchema(EventSchema):
+    registrations: List[RegistrationAdminSchema] = []
+
+    @staticmethod
+    def resolve_registrations(obj):
+        return obj.registrations.select_related("user").prefetch_related(
+            "payments__discount_code"
+        ).order_by("-registered_at")
+
+class PaginatedRegistrationSchema(Schema):
+    count: int
+    next: Optional[str] = None
+    previous: Optional[str] = None
+    results: List[RegistrationAdminSchema]
+
+class RegistrationStatusUpdateSchema(Schema):
+    status: str
+
+class RegisterationDetailSchema(Schema):
+    """Detailed registration information with associated event metadata."""
+    event_image: Optional[str]
+    event_title: str
+    event_type: str
+    ticket_id: UUID
+    status: str
+    registered_at: datetime
+    success_markdown: Optional[str]
+
+class EventBriefSchema(Schema):
+    """Minimal event representation used for nested responses."""
+    id: int
+    title: str
+    slug: str
+    start_date: datetime
+    end_date: Optional[datetime] = None
+    location: Optional[str] = None
+    price: int
+    absolute_image_url: Optional[str] = None
+
+class MyEventRegistrationOut(Schema):
+    """Registration information as returned to authenticated users."""
+    id: int
+    created_at: datetime
+    status: Literal["pending", "confirmed", "cancelled", "attended"]
+    event: EventBriefSchema
+
+class RegistrationStatusOut(Schema):
+    is_registered: bool
+
+
+class RegistrationCreateSchema(Schema):
+    discount_code: Optional[str] = None

backend/api/schemas/gallery.py

@@ -0,0 +1,27 @@
+"""Schemas for gallery resources."""
+
+from ninja import Schema, ModelSchema
+from typing import Optional
+
+from api.schemas.blog import AuthorSchema
+from gallery.models import Gallery
+
+
+class GallerySchema(ModelSchema):
+    """Serialized representation of a gallery image."""
+    uploaded_by: AuthorSchema
+    file_size_mb: float
+    markdown_url: str
+
+    class Config:
+        model = Gallery
+        model_fields = ['id', 'title', 'description', 'image', 'alt_text',
+                        'width', 'height', 'is_public', 'created_at']
+
+
+class GalleryCreateSchema(Schema):
+    """Payload for creating a gallery entry."""
+    title: str
+    description: Optional[str] = None
+    alt_text: Optional[str] = None
+    is_public: bool = True

backend/api/schemas/payments.py

@@ -0,0 +1,35 @@
+from ninja import Schema
+
+
+class CreatePaymentIn(Schema):
+    event_id: int
+    description: str
+    discount_code: str | None = None
+    mobile: str | None = None
+    email:  str | None = None
+
+
+class CreatePaymentOut(Schema):
+    start_pay_url: str | None = None
+    authority: str | None = None
+    base_amount: int
+    discount_amount: int
+    amount: int
+
+class PaymentDetailOut(Schema):
+    ref_id: str | None = None
+    authority: str | None = None
+    base_amount: int
+    discount_amount: int
+    amount: int
+    status: str
+    verified_at: str | None = None
+    event: dict
+
+class CouponVerifyIn(Schema):
+    event_id: int
+    code: str
+
+class CouponVerifyOut(Schema):
+    discount_amount: int
+    final_price: int

backend/api/urls.py

@@ -0,0 +1,16 @@
+from ninja import Router
+
+from api.views import *
+from api.views import certificates_router
+
+router = Router()
+
+router.add_router("auth/", auth_router, tags=["Authentication"])
+router.add_router("blog/", blog_router, tags=["Blog"])
+router.add_router("gallery/", gallery_router, tags=["Gallery"])
+router.add_router("events/", events_router, tags=["Events"])
+router.add_router("communications/", communications_router, tags=["Communications"])
+router.add_router("payments/", payments_router, tags=["Payments"])
+router.add_router("certificates/", certificates_router, tags=["Certificates"])
+router.add_router("meta/", meta_router, tags=["Meta"])
+router.add_router("/", health_router, tags=["Health"])

backend/api/views/__init__.py

@@ -0,0 +1,9 @@
+from api.views.auth import auth_router
+from api.views.blog import blog_router
+from api.views.gallery import gallery_router
+from api.views.events import events_router
+from api.views.certificates import certificates_router
+from api.views.communications import communications_router
+from api.views.payments import payments_router
+from api.views.meta import meta_router
+from api.views.health import health_router

backend/api/views/auth.py

@@ -0,0 +1,397 @@
+from typing import List
+
+from django.conf import settings
+from django.contrib.auth import authenticate
+from django.db.models import Q
+from django.shortcuts import get_object_or_404
+from django.utils import timezone
+from django.core.files.storage import default_storage
+from django.core.files.base import ContentFile
+
+import uuid
+import jwt
+from ninja import Query, Router
+
+from users.models import User, Major, University
+from users.tasks import send_verification_email, send_password_reset_email
+from api.authentication import create_jwt_token, create_refresh_token, jwt_auth
+from api.schemas import (
+    UserRegistrationSchema, UserLoginSchema, UserProfileSchema,
+    UserUpdateSchema, TokenSchema, TokenRefreshIn, MessageSchema, ErrorSchema,
+    PasswordResetRequestSchema, PasswordResetConfirmSchema, UsernameCheckSchema,
+    UserListSchema
+)
+
+auth_router = Router()
+
+def _get_major_from_code(code: str | None):
+    if not code:
+        return None
+    return Major.objects.filter(code=code, is_deleted=False).first()
+
+
+def _get_university_from_code(code: str | None):
+    if not code:
+        return None
+    return University.objects.filter(code=code, is_deleted=False).first()
+
+
+@auth_router.post("/register", response={201: MessageSchema, 400: ErrorSchema})
+def register(request, data: UserRegistrationSchema):
+    """Register a new user"""
+    try:
+        if data.student_id and len(str(data.student_id)) < 10:
+            return 400, {"error": "Student ID must be at least 10 characters long."}
+
+        major_obj = None
+        if data.major:
+            major_obj = _get_major_from_code(data.major)
+            if not major_obj:
+                return 400, {"error": "Selected major is not recognized."}
+
+        university_obj = None
+        if data.university:
+            university_obj = _get_university_from_code(data.university)
+            if not university_obj:
+                return 400, {"error": "Selected university is not recognized."}
+
+        if User.objects.filter(username=data.username).exists():
+            return 400, {"error": "Username is already in use."}
+
+        if User.objects.filter(email=data.email).exists():
+            return 400, {"error": "Email is already registered."}
+
+        if (
+            data.student_id
+            and university_obj
+            and User.objects.filter(
+                university=university_obj, student_id=data.student_id
+            ).exists()
+        ):
+            return 400, {"error": "This student ID is already registered at that university."}
+
+        User.objects.create_user(
+            username=data.username,
+            email=data.email,
+            password=data.password,
+            student_id=data.student_id,
+            first_name=data.first_name or "",
+            last_name=data.last_name or "",
+            year_of_study=data.year_of_study,
+            major=major_obj,
+            university=university_obj,
+        )
+
+        return 201, {"message": "Registration successful. Please check your inbox to verify your email."}
+
+    except Exception as e:
+        return 400, {
+            "error": "Unable to register user.",
+            "details": str(e),
+        }
+
+@auth_router.post("/login", response={200: TokenSchema, 401: ErrorSchema})
+def login(request, data: UserLoginSchema):
+    """Login user and return JWT tokens"""
+    user = authenticate(email=data.email, password=data.password)
+    
+    if not user:
+        return 401, {"error": "ایمیل یا رمز عبور نادرست است."}
+    
+    if not user.is_email_verified:
+        return 401, {"error": "برای ورود، ابتدا ایمیل خود را تأیید کنید."}
+    
+    if not user.is_active:
+        return 401, {"error": "حساب کاربری شما غیرفعال است."}
+    
+    access_token = create_jwt_token(user)
+    refresh_token = create_refresh_token(user)
+    
+    return 200, {
+        "access_token": access_token,
+        "refresh_token": refresh_token,
+        "token_type": "bearer"
+    }
+
+@auth_router.post("/refresh", response={200: TokenSchema, 401: ErrorSchema})
+def refresh_tokens(request, data: TokenRefreshIn):
+    """Exchange a valid refresh token for a new access (and refresh) token."""
+    try:
+        payload = jwt.decode(
+            data.refresh_token,
+            settings.JWT_SECRET_KEY,
+            algorithms=[settings.JWT_ALGORITHM],
+        )
+        if payload.get("type") != "refresh":
+            return 401, {"error": "نوع توکن نامعتبر است."}
+
+        user_id = payload.get("user_id")
+        if not user_id:
+            return 401, {"error": "داده‌های توکن نامعتبر است."}
+
+        user = get_object_or_404(User, id=user_id)
+
+        if not user.is_email_verified:
+            return 401, {"error": "برای استفاده، ابتدا ایمیل خود را تأیید کنید."}
+    
+        if not user.is_active:
+            return 401, {"error": "حساب کاربری شما غیرفعال است."}
+
+    except jwt.ExpiredSignatureError:
+        return 401, {"error": "رفرش‌توکن منقضی شده است."}
+    
+    except jwt.InvalidTokenError:
+        return 401, {"error": "رفرش‌توکن نامعتبر است."}
+
+    access_token = create_jwt_token(user)
+    refresh_token = create_refresh_token(user)
+
+    return {
+        "access_token": access_token,
+        "refresh_token": refresh_token,
+        "token_type": "bearer",
+    }
+
+@auth_router.get("/verify-email/{token}", response={200: MessageSchema, 400: ErrorSchema})
+def verify_email(request, token: str):
+    """Verify user email with token"""
+    try:
+        user = get_object_or_404(User, email_verification_token=token)
+        
+        if user.is_email_verified:
+            return 400, {"error": "ایمیل قبلاً تأیید شده است."}
+        
+        user.is_email_verified = True
+        user.save(update_fields=['is_email_verified'])
+        
+        return 200, {"message": "ایمیل شما با موفقیت تأیید شد."}
+        
+    except User.DoesNotExist:
+        return 400, {"error": "توکن تأیید نامعتبر است."}
+
+@auth_router.post("/resend-verification", response={200: MessageSchema, 400: ErrorSchema})
+def resend_verification(request, email: str):
+    """Resend verification email"""
+    try:
+        user = get_object_or_404(User, email=email)
+        
+        if user.is_email_verified:
+            return 400, {"error": "ایمیل قبلاً تأیید شده است."}
+        
+        # Generate new token
+        user.regenerate_verification_token()
+        user.email_verification_sent_at = timezone.now()
+        user.save(update_fields=['email_verification_sent_at'])
+        
+        # Send verification email
+        verification_url = f"{settings.FRONTEND_ROOT}verify-email/{user.email_verification_token}"
+        send_verification_email.delay(user.id, verification_url)
+        
+        return 200, {"message": "ایمیل تأیید برای شما ارسال شد."}
+        
+    except User.DoesNotExist:
+        return 400, {"error": "کاربر یافت نشد."}
+
+@auth_router.get("/profile", response=UserProfileSchema, auth=jwt_auth)
+def get_profile(request):
+    """Get current user profile"""
+    return request.auth
+
+@auth_router.put("/profile", response={200: UserProfileSchema, 400: ErrorSchema}, auth=jwt_auth)
+def update_profile(request, data: UserUpdateSchema):
+    """Update current user profile"""
+    user = request.auth
+    payload = data.dict(exclude_unset=True)
+
+    if "major" in payload:
+        code = payload.pop("major")
+        if code:
+            major_obj = _get_major_from_code(code)
+            if not major_obj:
+                return 400, {"error": "UcO_ O<>OrU?UOU? O<>U^UcU+ O<>O<EFBFBD>UOUOO_."}
+            payload["major"] = major_obj
+        else:
+            payload["major"] = None
+
+    if "university" in payload:
+        code = payload.pop("university")
+        if code:
+            uni_obj = _get_university_from_code(code)
+            if not uni_obj:
+                return 400, {"error": "UcO U.U^OO<>O_ O<>U^UcU+ O<>O<EFBFBD>UOUOO_."}
+            payload["university"] = uni_obj
+        else:
+            payload["university"] = None
+
+    for field, value in payload.items():
+        setattr(user, field, value)
+
+    user.save()
+    return 200, user
+
+@auth_router.post("/profile/picture", response={200: MessageSchema, 400: ErrorSchema}, auth=jwt_auth)
+def upload_profile_picture(request):
+    """Upload profile picture"""
+    if 'file' not in request.FILES:
+        return 400, {"error": "فایلی ارسال نشده است."}
+    
+    file = request.FILES['file']
+    
+    # Validate file type
+    if not file.content_type.startswith('image/'):
+        return 400, {"error": "فایل باید از نوع تصویر باشد."}
+    
+    # Validate file size (5MB max)
+    if file.size > 5 * 1024 * 1024:
+        return 400, {"error": "حجم فایل باید کمتر از ۵ مگابایت باشد."}
+    
+    user = request.auth
+    
+    # Delete old profile picture if exists
+    if user.profile_picture:
+        default_storage.delete(user.profile_picture.name)
+    
+    # Save new profile picture
+    filename = f"profile_pictures/{user.id}_{uuid.uuid4().hex}.{file.name.split('.')[-1]}"
+    user.profile_picture.save(filename, ContentFile(file.read()))
+    
+    return 200, {"message": "تصویر پروفایل با موفقیت به‌روزرسانی شد."}
+
+@auth_router.delete("/profile/picture", response={200: MessageSchema}, auth=jwt_auth)
+def delete_profile_picture(request):
+    """Delete current user's profile picture"""
+    user = request.auth
+    
+    if user.profile_picture:
+        default_storage.delete(user.profile_picture.name)
+        user.profile_picture = None
+        user.save(update_fields=['profile_picture'])
+    
+    return 200, {"message": "تصویر پروفایل با موفقیت حذف شد."}
+
+@auth_router.post("/request-password-reset", response={200: MessageSchema, 400: ErrorSchema})
+def request_password_reset(request, data: PasswordResetRequestSchema):
+    """Request a password reset email"""
+    try:
+        user = get_object_or_404(User, email=data.email)
+        user.set_password_reset_token()
+
+        reset_url = f"{settings.FRONTEND_PASSWORD_RESET_PAGE}/{user.password_reset_token}"
+        send_password_reset_email.delay(user.id, reset_url)
+
+        # پیام عمومیِ یکسان برای جلوگیری از افشای وجود/عدم وجود ایمیل
+        return 200, {"message": "اگر حسابی با این ایمیل وجود داشته باشد، لینک بازنشانی رمز عبور ارسال خواهد شد."}
+
+    except User.DoesNotExist:
+        return 200, {"message": "اگر حسابی با این ایمیل وجود داشته باشد، لینک بازنشانی رمز عبور ارسال خواهد شد."}
+
+    except Exception as e:
+        return 400, {"error": "درخواست بازنشانی رمز عبور انجام نشد.", "details": str(e)}
+
+@auth_router.post("/reset-password-confirm", response={200: MessageSchema, 400: ErrorSchema})
+def reset_password_confirm(request, data: PasswordResetConfirmSchema):
+    """Confirm password reset with token and new password"""
+    try:
+        user = get_object_or_404(User, password_reset_token=data.token)
+
+        if user.password_reset_token_expires_at < timezone.now():
+            user.password_reset_token = None
+            user.password_reset_token_expires_at = None
+            user.save(update_fields=['password_reset_token', 'password_reset_token_expires_at'])
+            return 400, {"error": "زمان استفاده از لینک تغییر رمز عبور به پایان رسیده است. لطفاً دوباره اقدام کنید."}
+
+        user.set_password(data.new_password)
+        user.password_reset_token = None
+        user.password_reset_token_expires_at = None
+        user.save(update_fields=['password', 'password_reset_token', 'password_reset_token_expires_at'])
+
+        return 200, {"message": "رمز عبور شما با موفقیت تغییر کرد."}
+
+    except User.DoesNotExist:
+        return 400, {"error": "توکن بازنشانی رمز عبور نامعتبر یا منقضی شده است."}
+
+    except Exception as e:
+        return 400, {"error": "تغییر رمز عبور انجام نشد.", "details": str(e)}
+
+@auth_router.get("/users/deleted", response={200: List[UserProfileSchema], 403: ErrorSchema}, auth=jwt_auth)
+def list_deleted_users(request):
+    """List soft-deleted users via the dedicated manager (Admin/Committee only)."""
+    if not (request.auth.is_staff or request.auth.is_superuser):
+        return 403, {"error": "اجازه دسترسی ندارید."}
+
+    return User.deleted_objects.all()
+
+@auth_router.post("/users/{user_id}/restore", response={200: MessageSchema, 400: ErrorSchema, 403: ErrorSchema}, auth=jwt_auth)
+def restore_user(request, user_id: int):
+    """Restore a soft-deleted user (Admin/Committee only)"""
+    if not (request.auth.is_staff or request.auth.is_superuser):
+        return 403, {"error": "اجازه دسترسی ندارید."}
+
+    try:
+        user = User.deleted_objects.get(id=user_id)
+        user.restore()
+        return 200, {"message": f"کاربر {user.username} با موفقیت بازیابی شد."}
+    except User.DoesNotExist:
+        return 400, {"error": "کاربر یافت نشد یا حذف نرم نشده است."}
+    except Exception as e:
+        return 400, {"error": "بازیابی کاربر انجام نشد.", "details": str(e)}
+
+@auth_router.get("/users", response={200: List[UserListSchema], 403: ErrorSchema}, auth=jwt_auth)
+def list_users(
+    request,
+    search: str | None = Query(None),
+    role: str | None = Query(None, description="staff or superuser"),
+    student_id: str | None = Query(None),
+    university: str | None = Query(None),
+    major: str | None = Query(None),
+    is_active: str | None = Query(None, description="true or false"),
+    limit: int = Query(50, ge=1, le=200),
+    offset: int = Query(0, ge=0),
+):
+    user = request.auth
+    if not (user.is_staff or user.is_superuser):
+        return 403, {"error": "اجازه دسترسی ندارید."}
+
+    queryset = User.objects.order_by("-date_joined")
+
+    if search:
+        queryset = queryset.filter(
+            Q(username__icontains=search)
+            | Q(email__icontains=search)
+            | Q(first_name__icontains=search)
+            | Q(last_name__icontains=search)
+        )
+
+    if role == "staff":
+        queryset = queryset.filter(is_staff=True)
+    elif role == "superuser":
+        queryset = queryset.filter(is_superuser=True)
+
+    if student_id:
+        queryset = queryset.filter(student_id__icontains=student_id)
+
+    if university:
+        queryset = queryset.filter(
+            Q(university__code__icontains=university) | Q(university__name__icontains=university)
+        )
+
+    if major:
+        queryset = queryset.filter(
+            Q(major__code__icontains=major) | Q(major__name__icontains=major)
+        )
+
+    if is_active is not None:
+        if is_active.lower() in ("true", "1"):
+            queryset = queryset.filter(is_active=True)
+        elif is_active.lower() in ("false", "0"):
+            queryset = queryset.filter(is_active=False)
+
+    return queryset[offset : offset + limit]
+
+@auth_router.get("/check-username", response=UsernameCheckSchema)
+def check_username_availability(request, username: str):
+    """Check if a username is available for registration"""
+    exists = User.objects.filter(username=username).exists()
+    return {"exists": exists}
+
+

backend/api/views/blog.py

@@ -0,0 +1,299 @@
+from django.shortcuts import get_object_or_404
+from django.db.models import Q, Prefetch
+
+from ninja import Router, Query
+from typing import List, Optional
+
+from users.models import User
+from blog.models import Post, Category, Tag, Comment, Like
+from api.authentication import jwt_auth
+from api.schemas import (
+    PostListSchema, PostDetailSchema, PostCreateSchema,
+    CategorySchema, TagSchema, CommentSchema, CommentCreateSchema,
+    MessageSchema, ErrorSchema
+)
+
+blog_router = Router()
+
+# Post endpoints
+@blog_router.get("/posts", response=List[PostListSchema])
+def list_posts(
+    request,
+    page: int = Query(1, ge=1),
+    limit: int = Query(10, ge=1, le=50),
+    category: Optional[str] = None,
+    tag: Optional[str] = None,
+    search: Optional[str] = None,
+    featured: Optional[bool] = None,
+    author: Optional[str] = None
+):
+    """List published posts with filtering and pagination"""
+    queryset = Post.objects.filter(status=Post.StatusChoices.PUBLISHED).select_related(
+        'author', 'category'
+    ).prefetch_related('tags')
+    
+    # Apply filters
+    if category:
+        queryset = queryset.filter(category__slug=category)
+    
+    if tag:
+        queryset = queryset.filter(tags__slug=tag)
+    
+    if search:
+        queryset = queryset.filter(
+            Q(title__icontains=search) | 
+            Q(content__icontains=search) |
+            Q(excerpt__icontains=search)
+        )
+    
+    if featured is not None:
+        queryset = queryset.filter(is_featured=featured)
+    
+    if author:
+        queryset = queryset.filter(author__username=author)
+    
+    # Pagination
+    offset = (page - 1) * limit
+    posts = queryset[offset:offset + limit]
+    
+    return posts
+
+@blog_router.get("/posts/{slug}", response=PostDetailSchema)
+def get_post(request, slug: str):
+    """Get single post by slug"""
+    post = get_object_or_404(
+        Post.objects.select_related('author', 'category').prefetch_related('tags'),
+        slug=slug,
+        status=Post.StatusChoices.PUBLISHED
+    )
+    return post
+
+@blog_router.post("/posts", response={201: PostDetailSchema, 400: ErrorSchema}, auth=jwt_auth)
+def create_post(request, data: PostCreateSchema):
+    """Create a new post (committee members only)"""
+    user = request.auth
+    
+    if not (user.is_superuser or user.is_staff):
+        return 400, {"error": "Only committee members can create posts"}
+    
+    try:
+        post = Post.objects.create(
+            title=data.title,
+            content=data.content,
+            excerpt=data.excerpt,
+            author=user,
+            category_id=data.category_id,
+            status=data.status,
+            is_featured=data.is_featured
+        )
+        
+        if data.tag_ids:
+            post.tags.set(data.tag_ids)
+        
+        return 201, post
+        
+    except Exception as e:
+        return 400, {"error": "Failed to create post", "details": str(e)}
+
+@blog_router.put("/posts/{slug}", response={200: PostDetailSchema, 400: ErrorSchema}, auth=jwt_auth)
+def update_post(request, slug: str, data: PostCreateSchema):
+    """Update a post (author or committee only)"""
+    user = request.auth
+    post = get_object_or_404(Post, slug=slug)
+    
+    if not (post.author == user or user.is_superuser or user.is_staff):
+        return 400, {"error": "You can only edit your own posts"}
+    
+    try:
+        for field, value in data.dict(exclude_unset=True).items():
+            if field == 'tag_ids':
+                if value:
+                    post.tags.set(value)
+            elif field == 'category_id':
+                post.category_id = value
+            else:
+                setattr(post, field, value)
+        
+        post.save()
+        return 200, post
+        
+    except Exception as e:
+        return 400, {"error": "Failed to update post", "details": str(e)}
+
+@blog_router.delete("/posts/{slug}", response={200: MessageSchema, 400: ErrorSchema}, auth=jwt_auth)
+def delete_post(request, slug: str):
+    """Soft delete a post owned by the requester or committee."""
+    user = request.auth
+    post = get_object_or_404(Post, slug=slug)
+    
+    if not (post.author == user or user.is_superuser or user.is_staff):
+        return 400, {"error": "You can only delete your own posts"}
+    
+    post.delete()
+    return 200, {"message": "Post deleted successfully"}
+
+@blog_router.get("/deleted/posts", response=List[PostListSchema], auth=jwt_auth)
+def list_deleted_posts(request):
+    """List all soft-deleted posts (Admin/Committee only)"""
+    if not (request.auth.is_staff or request.auth.is_superuser):
+        return 403, {"error": "Permission denied"}
+    return Post.deleted_objects.all().select_related('author', 'category').prefetch_related('tags')
+
+@blog_router.post("deleted/posts/{post_id}/restore", response={200: MessageSchema, 400: ErrorSchema}, auth=jwt_auth)
+def restore_post(request, post_id: int):
+    """Restore a soft-deleted post (Admin/Committee only)"""
+    if not (request.auth.is_staff or request.auth.is_superuser):
+        return 403, {"error": "Permission denied"}
+    try:
+        post = Post.deleted_objects.get(id=post_id)
+        post.restore()
+        return 200, {"message": f"Post '{post.title}' restored successfully."}
+    except Post.DoesNotExist:
+        return 400, {"error": "Post not found or not soft-deleted."}
+
+
+
+# Comment endpoints
+@blog_router.get("/posts/{slug}/comments", response=List[CommentSchema])
+def list_comments(request, slug: str):
+    """List approved comments for a post"""
+    post = get_object_or_404(Post, slug=slug, status=Post.StatusChoices.PUBLISHED)
+    
+    comments = Comment.objects.filter(
+        post=post,
+        is_approved=True,
+        parent=None
+    ).select_related('author').prefetch_related(
+        Prefetch(
+            'replies',
+            queryset=Comment.objects.filter(is_approved=True).select_related('author')
+        )
+    )
+    
+    return comments
+
+@blog_router.post("/posts/{slug}/comments", response={201: CommentSchema, 400: ErrorSchema}, auth=jwt_auth)
+def create_comment(request, slug: str, data: CommentCreateSchema):
+    """Create a comment on a post"""
+    post = get_object_or_404(Post, slug=slug, status=Post.StatusChoices.PUBLISHED)
+    user = request.auth
+    
+    try:
+        comment = Comment.objects.create(
+            post=post,
+            author=user,
+            content=data.content,
+            parent_id=data.parent_id
+        )
+        
+        return 201, comment
+        
+    except Exception as e:
+        return 400, {"error": "Failed to create comment", "details": str(e)}
+
+@blog_router.get("/deleted/comments", response=List[CommentSchema], auth=jwt_auth)
+def list_deleted_comments(request):
+    """List all soft-deleted comments (Admin/Committee only)"""
+    if not (request.auth.is_staff or request.auth.is_superuser):
+        return 403, {"error": "Permission denied"}
+    return Comment.deleted_objects.all().select_related('author', 'post')
+
+@blog_router.post("/deleted/comments/{comment_id}/restore", response={200: MessageSchema, 400: ErrorSchema}, auth=jwt_auth)
+def restore_comment(request, comment_id: int):
+    """Restore a soft-deleted comment (Admin/Committee only)"""
+    if not (request.auth.is_staff or request.auth.is_superuser):
+        return 403, {"error": "Permission denied"}
+    try:
+        comment = Comment.deleted_objects.get(id=comment_id)
+        comment.restore()
+        return 200, {"message": f"Comment by {comment.author.username} restored successfully."}
+    except Comment.DoesNotExist:
+        return 400, {"error": "Comment not found or not soft-deleted."}
+
+
+
+# Like endpoints
+@blog_router.post("/posts/{slug}/like", response={200: MessageSchema, 400: ErrorSchema}, auth=jwt_auth)
+def toggle_like(request, slug: str):
+    """Toggle like on a post"""
+    post = get_object_or_404(Post, slug=slug, status=Post.StatusChoices.PUBLISHED)
+    user = request.auth
+    
+    like, created = Like.objects.get_or_create(post=post, user=user)
+    
+    if not created:
+        like.delete()
+        return 200, {"message": "Post unliked"}
+    
+    return 200, {"message": "Post liked"}
+
+@blog_router.get("/posts/{slug}/likes", response={200: MessageSchema})
+def get_likes_count(request, slug: str):
+    """Get likes count for a post"""
+    post = get_object_or_404(Post, slug=slug, status=Post.StatusChoices.PUBLISHED)
+    count = post.likes.count()
+    return {"message": f"{count}"}
+
+
+
+# Category endpoints
+@blog_router.get("/categories", response=List[CategorySchema])
+def list_categories(request):
+    """List all categories"""
+    return Category.objects.all()
+
+@blog_router.get("/categories/{slug}", response=CategorySchema)
+def get_category(request, slug: str):
+    """Get single category by slug"""
+    return get_object_or_404(Category, slug=slug)
+
+@blog_router.get("/deleted/categories", response=List[CategorySchema], auth=jwt_auth)
+def list_deleted_categories(request):
+    """List all soft-deleted categories (Admin/Committee only)"""
+    if not (request.auth.is_staff or request.auth.is_superuser):
+        return 403, {"error": "Permission denied"}
+    return Category.deleted_objects.all()
+
+@blog_router.post("/deleted/categories/{category_id}/restore", response={200: MessageSchema, 400: ErrorSchema}, auth=jwt_auth)
+def restore_category(request, category_id: int):
+    """Restore a soft-deleted category (Admin/Committee only)"""
+    if not (request.auth.is_staff or request.auth.is_superuser):
+        return 403, {"error": "Permission denied"}
+    try:
+        category = Category.deleted_objects.get(id=category_id)
+        category.restore()
+        return 200, {"message": f"Category '{category.name}' restored successfully."}
+    except Category.DoesNotExist:
+        return 400, {"error": "Category not found or not soft-deleted."}
+
+
+
+# Tag endpoints
+@blog_router.get("/tags", response=List[TagSchema])
+def list_tags(request):
+    """List all tags"""
+    return Tag.objects.all()
+
+@blog_router.get("/tags/{slug}", response=TagSchema)
+def get_tag(request, slug: str):
+    """Get single tag by slug"""
+    return get_object_or_404(Tag, slug=slug)
+
+@blog_router.get("/deleted/tags", response=List[TagSchema], auth=jwt_auth)
+def list_deleted_tags(request):
+    """List all soft-deleted tags (Admin/Committee only)"""
+    if not (request.auth.is_staff or request.auth.is_superuser):
+        return 403, {"error": "Permission denied"}
+    return Tag.all_objects.all()
+
+@blog_router.post("/deleted/tags/{tag_id}/restore", response={200: MessageSchema, 400: ErrorSchema}, auth=jwt_auth)
+def restore_tag(request, tag_id: int):
+    """Restore a soft-deleted tag (Admin/Committee only)"""
+    if not (request.auth.is_staff or request.auth.is_superuser):
+        return 403, {"error": "Permission denied"}
+    try:
+        tag = Tag.deleted_objects.get(id=tag_id)
+        tag.restore()
+        return 200, {"message": f"Tag '{tag.name}' restored successfully."}
+    except Tag.DoesNotExist:
+        return 400, {"error": "Tag not found or not soft-deleted."}

backend/api/views/certificates.py

@@ -0,0 +1,138 @@
+from django.shortcuts import get_object_or_404
+from django.core.exceptions import ValidationError
+
+from ninja import Router
+from ninja.errors import HttpError
+
+from api.authentication import jwt_auth
+from api.schemas.certificates import (
+    CertificateTemplateOut,
+    CertificateGenerationPayload,
+    CertificateGenerationResponse,
+    CertificateVerificationOut,
+    SkillSchema,
+    UserCertificateOut,
+)
+from certificates.models import CertificateTemplate, UserCertificate
+
+
+certificates_router = Router(tags=["Certificates"])
+
+
+def _ensure_staff(user):
+    if not user or not user.is_staff:
+        raise HttpError(403, "Only staff users can access certificate management.")
+
+
+@certificates_router.get(
+    "templates/{int:event_id}",
+    response=CertificateTemplateOut,
+    auth=jwt_auth,
+)
+def get_template(request, event_id: int):
+    _ensure_staff(request.auth)
+    template = get_object_or_404(
+        CertificateTemplate.objects.select_related('event').prefetch_related('skills'),
+        event_id=event_id,
+        is_deleted=False,
+    )
+
+    skills = [
+        SkillSchema(
+            id=skill.id,
+            name=skill.name,
+            description=skill.description,
+        )
+        for skill in template.skills.all()
+    ]
+
+    image_url = None
+    if template.image and hasattr(template.image, 'url'):
+        image_url = request.build_absolute_uri(template.image.url)
+
+    return CertificateTemplateOut(
+        id=template.id,
+        event_id=template.event_id,
+        event_title=template.event.title,
+        image_url=image_url,
+        skill_ids=list(template.skills.values_list('id', flat=True)),
+        skills=skills,
+    )
+
+
+@certificates_router.post(
+    "templates/{int:event_id}/generate",
+    response=CertificateGenerationResponse,
+    auth=jwt_auth,
+)
+def generate_certificates(request, event_id: int, payload: CertificateGenerationPayload):
+    _ensure_staff(request.auth)
+    template = get_object_or_404(
+        CertificateTemplate.objects.select_related('event').prefetch_related('skills'),
+        event_id=event_id,
+        is_deleted=False,
+    )
+
+    try:
+        entries = [entry.model_dump() for entry in payload.entries]
+        certificates = template.generate_certificates(
+            entries,
+            default_title=payload.default_title,
+            default_description=payload.default_description,
+        )
+    except ValidationError as exc:
+        raise HttpError(400, str(exc))
+
+    result = []
+    for certificate in certificates:
+        image_url = None
+        if certificate.image and hasattr(certificate.image, 'url'):
+            image_url = request.build_absolute_uri(certificate.image.url)
+
+        result.append(
+            UserCertificateOut(
+                id=certificate.id,
+                user_id=certificate.user_id,
+                user_name=certificate.user.get_full_name() or certificate.user.email,
+                event_id=certificate.event_id,
+                title=certificate.title,
+                certificate_id=str(certificate.certificate_id),
+                certificate_code=certificate.code,
+                score=certificate.score,
+                score_label=certificate.score_label,
+                image_url=image_url,
+            )
+        )
+
+    return CertificateGenerationResponse(certificates=result)
+
+
+@certificates_router.get(
+    "verify/{str:certificate_code}",
+    response=CertificateVerificationOut,
+)
+def verify_certificate(request, certificate_code):
+    certificate = get_object_or_404(
+        UserCertificate.objects.select_related('event', 'user').prefetch_related('skills'),
+        code=certificate_code,
+        is_deleted=False,
+    )
+    image_url = None
+    if certificate.image and hasattr(certificate.image, 'url'):
+        image_url = request.build_absolute_uri(certificate.image.url)
+
+    return CertificateVerificationOut(
+        certificate_id=str(certificate.certificate_id),
+        certificate_code=certificate.code,
+        user_id=certificate.user_id,
+        user_name=certificate.user.get_full_name() or certificate.user.email,
+        event_id=certificate.event_id,
+        event_title=certificate.event.title,
+        title=certificate.title,
+        score=certificate.score,
+        score_label=certificate.score_label,
+        issued_at=certificate.issued_at,
+        expires_at=certificate.expires_at,
+        image_url=image_url,
+        skills=[skill.name for skill in certificate.skills.all()],
+    )

backend/api/views/communications.py

@@ -0,0 +1,329 @@
+from django.shortcuts import get_object_or_404
+from django.contrib.auth import get_user_model
+from django.utils import timezone
+from django.db.models import Q, Count
+from ninja import Router
+from ninja.pagination import paginate
+from typing import List
+import logging
+
+from communications.models import (
+    Announcement, NewsletterSubscription, PushNotificationDevice,
+    AnnouncementType, AnnouncementPriority
+)
+from communications.utils import (
+    send_announcement_email, send_newsletter_confirmation,
+    get_announcement_recipients
+)
+from communications.push_notifications import push_service
+from api.schemas import (
+    AnnouncementSchema, AnnouncementListSchema, AnnouncementCreateSchema, AnnouncementUpdateSchema,
+    NewsletterSubscriptionSchema, NewsletterSubscribeSchema, NewsletterUnsubscribeSchema,
+    PushDeviceSchema, PushDeviceCreateSchema, PushDeviceUpdateSchema,
+    PushNotificationSchema, MessageResponseSchema,
+    AnnouncementStatsSchema, NewsletterStatsSchema
+)
+from api.authentication import jwt_auth
+
+User = get_user_model()
+logger = logging.getLogger(__name__)
+
+communications_router = Router()
+
+# Announcement endpoints
+@communications_router.get("/announcements/", response=List[AnnouncementListSchema])
+@paginate
+def list_announcements(request, published_only: bool = True):
+    """List announcements"""
+    queryset = Announcement.objects.select_related('author').filter(is_deleted=False)
+    
+    if published_only:
+        queryset = queryset.filter(is_published=True, publish_date__lte=timezone.now())
+    
+    return queryset.order_by('-created_at')
+
+@communications_router.get("/announcements/{announcement_id}/", response=AnnouncementSchema)
+def get_announcement(request, announcement_id: int):
+    """Get single announcement"""
+    announcement = get_object_or_404(
+        Announcement.objects.select_related('author').filter(is_deleted=False),
+        id=announcement_id
+    )
+    
+    # Check if published or user has permission
+    if not announcement.is_published:
+        # Only allow access to unpublished announcements for staff/committee
+        if not hasattr(request, 'auth') or not request.auth:
+            return {"error": "Announcement not found"}, 404
+        
+        user = request.auth
+        if not (user.is_staff or user.is_committee):
+            return {"error": "Announcement not found"}, 404
+    
+    return announcement
+
+@communications_router.post("/announcements/", response=AnnouncementSchema, auth=jwt_auth)
+def create_announcement(request, payload: AnnouncementCreateSchema):
+    """Create new announcement (committee/staff only)"""
+    user = request.auth
+    if not (user.is_staff or user.is_committee):
+        return {"error": "Permission denied"}, 403
+    
+    announcement = Announcement.objects.create(
+        author=user,
+        **payload.dict()
+    )
+    
+    # Send notifications if requested and published
+    if announcement.is_published and announcement.publish_date <= timezone.now():
+        if announcement.send_email:
+            recipients = get_announcement_recipients(announcement)
+            if recipients:
+                send_announcement_email(announcement, recipients)
+                announcement.email_sent = True
+        
+        if announcement.send_push:
+            push_service.send_announcement_notification(announcement)
+            announcement.push_sent = True
+        
+        announcement.save()
+    
+    return announcement
+
+@communications_router.put("/announcements/{announcement_id}/", response=AnnouncementSchema, auth=jwt_auth)
+def update_announcement(request, announcement_id: int, payload: AnnouncementUpdateSchema):
+    """Update announcement (author/committee/staff only)"""
+    user = request.auth
+    announcement = get_object_or_404(Announcement, id=announcement_id, is_deleted=False)
+    
+    # Check permissions
+    if not (user.is_staff or user.is_committee or announcement.author == user):
+        return {"error": "Permission denied"}, 403
+    
+    # Update fields
+    for field, value in payload.dict(exclude_unset=True).items():
+        setattr(announcement, field, value)
+    
+    announcement.save()
+    
+    # Send notifications if newly published
+    if (announcement.is_published and announcement.publish_date <= timezone.now() and
+        not announcement.email_sent and announcement.send_email):
+        recipients = get_announcement_recipients(announcement)
+        if recipients:
+            send_announcement_email(announcement, recipients)
+            announcement.email_sent = True
+            announcement.save()
+    
+    if (announcement.is_published and announcement.publish_date <= timezone.now() and
+        not announcement.push_sent and announcement.send_push):
+        push_service.send_announcement_notification(announcement)
+        announcement.push_sent = True
+        announcement.save()
+    
+    return announcement
+
+@communications_router.delete("/announcements/{announcement_id}/", response=MessageResponseSchema, auth=jwt_auth)
+def delete_announcement(request, announcement_id: int):
+    """Delete announcement (author/committee/staff only)"""
+    user = request.auth
+    announcement = get_object_or_404(Announcement, id=announcement_id, is_deleted=False)
+    
+    # Check permissions
+    if not (user.is_staff or user.is_committee or announcement.author == user):
+        return {"error": "Permission denied"}, 403
+    
+    announcement.soft_delete()
+    return {"message": "Announcement deleted successfully"}
+
+@communications_router.get("/announcements/stats/", response=AnnouncementStatsSchema, auth=jwt_auth)
+def get_announcement_stats(request):
+    """Get announcement statistics (committee/staff only)"""
+    user = request.auth
+    if not (user.is_staff or user.is_committee):
+        return {"error": "Permission denied"}, 403
+    
+    stats = Announcement.objects.filter(is_deleted=False).aggregate(
+        total_announcements=Count('id'),
+        published_announcements=Count('id', filter=Q(is_published=True)),
+        draft_announcements=Count('id', filter=Q(is_published=False)),
+        urgent_announcements=Count('id', filter=Q(priority='urgent')),
+        email_sent_count=Count('id', filter=Q(email_sent=True)),
+        push_sent_count=Count('id', filter=Q(push_sent=True))
+    )
+    
+    return stats
+
+# Newsletter endpoints
+@communications_router.post("/newsletter/subscribe/", response=MessageResponseSchema)
+def subscribe_newsletter(request, payload: NewsletterSubscribeSchema):
+    """Subscribe to newsletter"""
+    try:
+        subscription, created = NewsletterSubscription.objects.get_or_create(
+            email=payload.email,
+            defaults={
+                'subscribed_categories': payload.subscribed_categories,
+                'is_active': True
+            }
+        )
+        
+        if not created and not subscription.is_active:
+            subscription.is_active = True
+            subscription.subscribed_categories = payload.subscribed_categories
+            subscription.save()
+        
+        # Send confirmation email
+        send_newsletter_confirmation(subscription)
+        
+        message = (
+            "عضویت در خبرنامه با موفقیت انجام شد! لطفاً برای تأیید، ایمیل خود را بررسی کنید."
+            if created
+            else "اشتراک خبرنامه به‌روزرسانی شد!"
+        )
+        return {"message": message}
+        
+    except Exception as e:
+        logger.error(f"Newsletter subscription failed: {str(e)}")
+        return {"message": "Subscription failed", "success": False}, 400
+
+@communications_router.post("/newsletter/unsubscribe/", response=MessageResponseSchema)
+def unsubscribe_newsletter(request, payload: NewsletterUnsubscribeSchema):
+    """Unsubscribe from newsletter"""
+    try:
+        subscription = NewsletterSubscription.objects.get(email=payload.email)
+        subscription.is_active = False
+        subscription.save()
+        return {"message": "Successfully unsubscribed from newsletter"}
+    except NewsletterSubscription.DoesNotExist:
+        return {"message": "Email not found in subscription list"}, 404
+
+@communications_router.get("/newsletter/confirm/{token}/", response=MessageResponseSchema)
+def confirm_newsletter_subscription(request, token: str):
+    """Confirm newsletter subscription"""
+    try:
+        subscription = NewsletterSubscription.objects.get(confirmation_token=token)
+        subscription.confirmed_at = timezone.now()
+        subscription.is_active = True
+        subscription.save()
+        return {"message": "Newsletter subscription confirmed successfully!"}
+    except NewsletterSubscription.DoesNotExist:
+        return {"message": "Invalid confirmation token"}, 400
+
+@communications_router.get("/newsletter/unsubscribe/{token}/", response=MessageResponseSchema)
+def unsubscribe_newsletter_token(request, token: str):
+    """Unsubscribe using token from email"""
+    try:
+        subscription = NewsletterSubscription.objects.get(unsubscribe_token=token)
+        subscription.is_active = False
+        subscription.save()
+        return {"message": "Successfully unsubscribed from newsletter"}
+    except NewsletterSubscription.DoesNotExist:
+        return {"message": "Invalid unsubscribe token"}, 400
+
+@communications_router.get("/newsletter/subscriptions/", response=List[NewsletterSubscriptionSchema], auth=jwt_auth)
+@paginate
+def list_newsletter_subscriptions(request):
+    """List newsletter subscriptions (committee/staff only)"""
+    user = request.auth
+    if not (user.is_staff or user.is_committee):
+        return {"error": "Permission denied"}, 403
+    
+    return NewsletterSubscription.objects.select_related('user').filter(is_deleted=False).order_by('-created_at')
+
+@communications_router.get("/newsletter/stats/", response=NewsletterStatsSchema, auth=jwt_auth)
+def get_newsletter_stats(request):
+    """Get newsletter statistics (committee/staff only)"""
+    user = request.auth
+    if not (user.is_staff or user.is_committee):
+        return {"error": "Permission denied"}, 403
+    
+    stats = NewsletterSubscription.objects.filter(is_deleted=False).aggregate(
+        total_subscriptions=Count('id'),
+        active_subscriptions=Count('id', filter=Q(is_active=True)),
+        confirmed_subscriptions=Count('id', filter=Q(confirmed_at__isnull=False)),
+        recent_subscriptions=Count('id', filter=Q(created_at__gte=timezone.now() - timezone.timedelta(days=30)))
+    )
+    
+    return stats
+
+# Push notification endpoints
+@communications_router.post("/push-devices/", response=PushDeviceSchema, auth=jwt_auth)
+def register_push_device(request, payload: PushDeviceCreateSchema):
+    """Register push notification device"""
+    user = request.auth
+    
+    device, created = PushNotificationDevice.objects.get_or_create(
+        user=user,
+        device_token=payload.device_token,
+        defaults={'device_type': payload.device_type, 'is_active': True}
+    )
+    
+    if not created:
+        device.is_active = True
+        device.device_type = payload.device_type
+        device.save()
+    
+    return device
+
+@communications_router.delete("/push-devices/", response=MessageResponseSchema, auth=jwt_auth)
+def unregister_push_device(request, device_token: str):
+    """Unregister push notification device"""
+    user = request.auth
+    
+    try:
+        device = PushNotificationDevice.objects.get(user=user, device_token=device_token)
+        device.delete()
+        return {"message": "Device unregistered successfully"}
+    except PushNotificationDevice.DoesNotExist:
+        return {"message": "Device not found"}, 404
+
+@communications_router.get("/push-devices/", response=List[PushDeviceSchema], auth=jwt_auth)
+def list_user_push_devices(request):
+    """List user's push notification devices"""
+    user = request.auth
+    return PushNotificationDevice.objects.filter(user=user, is_deleted=False).order_by('-created_at')
+
+@communications_router.put("/push-devices/{device_id}/", response=PushDeviceSchema, auth=jwt_auth)
+def update_push_device(request, device_id: int, payload: PushDeviceUpdateSchema):
+    """Update push notification device"""
+    user = request.auth
+    device = get_object_or_404(PushNotificationDevice, id=device_id, user=user, is_deleted=False)
+    
+    device.is_active = payload.is_active
+    device.save()
+    
+    return device
+
+@communications_router.post("/push-notifications/send/", response=MessageResponseSchema, auth=jwt_auth)
+def send_push_notification(request, payload: PushNotificationSchema):
+    """Send push notification (committee/staff only)"""
+    user = request.auth
+    if not (user.is_staff or user.is_committee):
+        return {"error": "Permission denied"}, 403
+    
+    # Get target users
+    users = []
+    if payload.target_audience == 'all':
+        users = User.objects.filter(is_active=True)
+    elif payload.target_audience == 'members':
+        users = User.objects.filter(is_member=True, is_active=True)
+    elif payload.target_audience == 'committee':
+        users = User.objects.filter(is_committee=True, is_active=True)
+    
+    # Send notifications
+    total_sent = push_service.send_to_multiple_users(
+        users, payload.title, payload.body, payload.data
+    )
+    
+    return {"message": f"Push notification sent to {total_sent} devices"}
+
+# Utility endpoints
+@communications_router.get("/announcement-types/", response=List[dict])
+def get_announcement_types(request):
+    """Get available announcement types"""
+    return [{"value": choice[0], "label": choice[1]} for choice in AnnouncementType.choices]
+
+@communications_router.get("/announcement-priorities/", response=List[dict])
+def get_announcement_priorities(request):
+    """Get available announcement priorities"""
+    return [{"value": choice[0], "label": choice[1]} for choice in AnnouncementPriority.choices]

backend/api/views/events.py

@@ -0,0 +1,371 @@
+from django.shortcuts import get_object_or_404
+from django.db.models import Q, Case, When, IntegerField
+from django.utils.text import slugify
+from django.utils import timezone
+
+from ninja import Router, Query
+from ninja.errors import HttpError
+from typing import List, Optional
+from uuid import UUID
+
+from api.authentication import jwt_auth
+from events.models import Event, Registration
+from payments.models import DiscountCode
+from api.schemas import (
+    EventSchema,
+    EventCreateSchema,
+    EventUpdateSchema,
+    EventListSchema,
+    RegistrationSchema,
+    RegistrationStatusUpdateSchema,
+    RegisterationDetailSchema,
+    MyEventRegistrationOut,
+    RegistrationStatusOut,
+    EventBriefSchema,
+    EventAdminDetailSchema,
+    PaginatedRegistrationSchema,
+    MessageSchema,
+    ErrorSchema,
+    RegistrationCreateSchema,
+)
+
+events_router = Router()
+
+# Event endpoints
+@events_router.get("/", response=List[EventListSchema])
+def list_events(
+    request,
+    # status: Optional[str] = None,
+    status: Optional[List[str]] = Query(None),
+    event_type: Optional[str] = None,
+    search: Optional[str] = None,
+    limit: int = 20,
+    offset: int = 0
+):
+    """List events with filtering and pagination"""
+    queryset = Event.objects.filter(is_deleted=False).prefetch_related('gallery_images')
+
+    if status:
+        if "," in status:
+            parts = [s.strip() for s in status.split(",") if s.strip()]
+            queryset = queryset.filter(status__in=parts)
+        else:
+            queryset = queryset.filter(status__in=status)
+    if event_type:
+        queryset = queryset.filter(event_type=event_type)
+    if search:
+        queryset = queryset.filter(
+            Q(title__icontains=search) | Q(description__icontains=search)
+        )
+
+    queryset = queryset.annotate(
+        published_first=Case(
+            When(status='published', then=0),
+            default=1,
+            output_field=IntegerField()
+        )
+    ).order_by('published_first', '-start_time', '-id')
+
+    events = queryset[offset:offset + limit]
+    return events
+
+@events_router.get("/{int:event_id}", response=EventSchema)
+def get_event(request, event_id: int):
+    """Get event details by ID"""
+    event = get_object_or_404(
+        Event.objects.prefetch_related('gallery_images'),
+        id=event_id,
+        is_deleted=False
+    )
+    return event
+
+@events_router.get("/slug/{str:slug}", response=EventSchema)
+def get_event_by_slug(request, slug: str):
+    """Get event details by slug"""
+    event = get_object_or_404(
+        Event.objects.prefetch_related('gallery_images'),
+        slug=slug,
+        is_deleted=False
+    )
+    return event
+
+@events_router.post("/", response=EventSchema)
+def create_event(request, payload: EventCreateSchema):
+    """Create a new event"""
+    gallery_image_ids = payload.dict().pop('gallery_image_ids', [])
+    event = Event.objects.create(**payload.dict(exclude={'gallery_image_ids'}))
+
+    if gallery_image_ids:
+        event.gallery_images.set(gallery_image_ids)
+
+    return event
+
+@events_router.put("/{int:event_id}", response=EventSchema)
+def update_event(request, event_id: int, payload: EventUpdateSchema):
+    """Update an existing event"""
+    event = get_object_or_404(Event, id=event_id, is_deleted=False)
+
+    update_data = payload.dict(exclude_unset=True)
+    gallery_image_ids = update_data.pop('gallery_image_ids', None)
+
+    for attr, value in update_data.items():
+        setattr(event, attr, value)
+
+    if 'title' in update_data:
+        event.slug = slugify(event.title)
+
+    event.save()
+
+    if gallery_image_ids is not None:
+        event.gallery_images.set(gallery_image_ids)
+
+    return event
+
+@events_router.delete("/{int:event_id}", response=MessageSchema)
+def delete_event(request, event_id: int):
+    """Soft delete an event"""
+    event = get_object_or_404(Event, id=event_id, is_deleted=False)
+    event.delete()
+    return {"message": "Event deleted successfully"}
+
+# Registration endpoints
+@events_router.get("/{int:event_id}/registrations", response=List[RegistrationSchema])
+def list_event_registrations(request, event_id: int, limit: int = 20, offset: int = 0):
+    """List registrations for a specific event"""
+    event = get_object_or_404(Event, id=event_id, is_deleted=False)
+    queryset = event.registrations.filter(is_deleted=False).select_related('user')
+
+    registrations = queryset[offset:offset + limit]
+    return registrations
+
+
+@events_router.get("/{int:event_id}/admin-registrations", response={200: PaginatedRegistrationSchema, 403: ErrorSchema}, auth=jwt_auth)
+def list_event_registrations_admin(
+    request,
+    event_id: int,
+    status: Optional[List[str]] = Query(None),
+    university: Optional[str] = Query(None),
+    major: Optional[str] = Query(None),
+    search: Optional[str] = Query(None),
+    limit: int = Query(20, ge=1, le=200),
+    offset: int = Query(0, ge=0),
+):
+    """List registrations with filters for admin dashboard"""
+    user = request.auth
+    if not (user.is_staff or user.is_superuser):
+        return 403, {"error": "اجازه دسترسی ندارید."}
+
+    event = get_object_or_404(Event, id=event_id, is_deleted=False)
+    qs = (
+        event.registrations.filter(is_deleted=False)
+        .select_related("user")
+        .prefetch_related("payments__discount_code")
+        .order_by("-registered_at")
+    )
+
+    status_values = status or request.GET.getlist('status')
+    if status_values:
+        qs = qs.filter(status__in=status_values)
+
+    if university:
+        qs = qs.filter(
+            Q(user__university__code__icontains=university)
+            | Q(user__university__name__icontains=university)
+        )
+
+    if major:
+        qs = qs.filter(
+            Q(user__major__code__icontains=major)
+            | Q(user__major__name__icontains=major)
+        )
+
+    if search:
+        qs = qs.filter(
+            Q(user__username__icontains=search)
+            | Q(user__email__icontains=search)
+            | Q(user__first_name__icontains=search)
+            | Q(user__last_name__icontains=search)
+        )
+
+    total = qs.count()
+    results = qs[offset : offset + limit]
+
+    return PaginatedRegistrationSchema(count=total, next=None, previous=None, results=list(results))
+
+@events_router.post(
+    "/{int:event_id}/register",
+    response=RegistrationSchema,
+    auth=jwt_auth,
+)
+def register_for_event(
+    request,
+    event_id: int,
+    payload: RegistrationCreateSchema | None = None,
+):
+    """Register current user for an event"""
+    event = get_object_or_404(Event, id=event_id, is_deleted=False)
+    user = request.auth
+
+    if Registration.objects.filter(event=event, user=user, status=Registration.StatusChoices.CONFIRMED).exists():
+        raise HttpError(400, "شما قبلا در این ایونت ثبت‌نام کرده‌اید.")
+
+    if event.registration_end_date and event.registration_end_date < timezone.now():
+        raise HttpError(400, "مهلت ثبت‌نام به پایان رسیده‌است")
+    
+    if event.registration_start_date and event.registration_start_date > timezone.now():
+        raise HttpError(400, "زمان ثبت‌نام هنوز آغاز نشده است")
+
+    if not event.has_available_slots:
+        raise HttpError(400, "ظرفیت شرکت‌کنندگان تکمیل است")
+
+    # Create or get existing registration
+    discount_code = None
+    if payload and payload.discount_code:
+        discount_code = payload.discount_code
+    elif request.GET.get("discount_code"):
+        discount_code = request.GET.get("discount_code")
+
+    registration, created = Registration.objects.get_or_create(
+        event=event,
+        user=user,
+        status=Registration.StatusChoices.PENDING,
+        defaults={"final_price": event.price},
+    )
+
+    if registration.status == Registration.StatusChoices.CONFIRMED:
+        return HttpError(400, "شما قبلا در این ایونت ثبت‌نام کرده‌اید")
+
+    if registration.status == Registration.StatusChoices.CANCELLED:
+        registration = Registration.objects.create(
+            event=event,
+            user=user,
+            status=Registration.StatusChoices.PENDING,
+            final_price=event.price,
+        )
+    elif not created and registration.final_price is None:
+        registration.final_price = event.price
+        registration.save(update_fields=["final_price"])
+
+    applied_code = None
+    discount_amount = 0
+    final_price = event.price
+    fields_to_update = []
+
+    if discount_code:
+        applied_code = DiscountCode.objects.filter(
+            code=discount_code,
+            applicable_events=event,
+            is_active=True,
+        ).first()
+        if not applied_code:
+            raise HttpError(400, "UcO_ O<>OrU?UOU? U.O1O<31>O\"O<EFBFBD> U+UOO3O<33>")
+        final_price, discount_amount = applied_code.calculate_discount(event, user)
+        registration.discount_code = applied_code
+        registration.discount_amount = discount_amount
+        fields_to_update.extend(["discount_code", "discount_amount"])
+
+    if registration.final_price != final_price:
+        registration.final_price = final_price
+        fields_to_update.append("final_price")
+
+    if not event.price or final_price == 0:
+        registration.status = Registration.StatusChoices.CONFIRMED
+        fields_to_update.append("status")
+
+    if fields_to_update:
+        registration.save(update_fields=list(set(fields_to_update)))
+
+    return registration
+
+@events_router.put("/registrations/{int:registration_id}", response=RegistrationSchema, auth=jwt_auth)
+def update_registration_status(request, registration_id: int, payload: RegistrationStatusUpdateSchema):
+    """Update registration status"""
+    user = request.auth
+
+    registration = get_object_or_404(Registration, id=registration_id, user=user, is_deleted=False)
+    registration.status = payload.dict(exclude_unset=True).get('status')
+    registration.full_clean()
+    registration.save()
+
+    return registration
+
+@events_router.delete("/registrations/{int:registration_id}", response=MessageSchema, auth=jwt_auth)
+def cancel_registration(request, registration_id: int):
+    """Cancel a registration"""
+    user = request.auth
+
+    registration = get_object_or_404(Registration, id=registration_id, user=user, is_deleted=False)
+    registration.delete()
+    return {"message": "ثبت‌نام شما لغو شد :("}
+
+@events_router.get("/registerations/verify/{UUID:ticket_id}", response=RegisterationDetailSchema, auth=jwt_auth)
+def verify_my_registration(request, ticket_id: UUID):
+    try:
+        reg = Registration.objects.select_related("event").get(ticket_id=ticket_id, user=request.auth)
+        return {
+            "event_image": request.build_absolute_uri(reg.event.featured_image.url) if reg.event.featured_image else None,
+            "event_title": reg.event.title,
+            "event_type": reg.event.get_event_type_display(),
+            "ticket_id": reg.ticket_id,
+            "status": reg.status,
+            "registered_at": reg.registered_at,
+            "success_markdown": reg.event.registration_success_markdown,
+        }
+    except Registration.DoesNotExist:
+        raise HttpError(404, "registration not found")
+
+
+
+@events_router.get("/my-registrations", response=List[MyEventRegistrationOut], auth=jwt_auth)
+def my_registrations(request):
+    qs = (
+        Registration.objects
+        .filter(user=request.auth)
+        .select_related("event")
+        .order_by("-created_at")
+    )
+    out: List[MyEventRegistrationOut] = []
+    for r in qs:
+        out.append(
+            MyEventRegistrationOut(
+                id=r.id,
+                created_at=r.created_at,
+                status=r.status,
+                event=EventBriefSchema(
+                    id=r.event.id,
+                    title=r.event.title,
+                    slug=r.event.slug,
+                    start_date=r.event.start_time,
+                    end_date=r.event.end_time,
+                    location=r.event.location,
+                    price=r.event.price,
+                    absolute_image_url=request.build_absolute_uri(r.event.featured_image.url) if r.event.featured_image else None,
+                ),
+            )
+        )
+    return out
+
+@events_router.get("/{event_id}/is-registered", response=RegistrationStatusOut, auth=jwt_auth)
+def is_registered(request, event_id: int):
+    exists = Registration.objects.filter(
+        user=request.auth,
+        event_id=event_id,
+        status=Registration.StatusChoices.CONFIRMED
+    ).exists()
+    return {"is_registered": exists}
+@events_router.get("/{int:event_id}/admin-detail", response=EventAdminDetailSchema, auth=jwt_auth)
+def event_admin_detail(request, event_id: int):
+    user = request.auth
+    if not (user.is_staff or user.is_superuser):
+        return 403, {"error": "اجازه دسترسی ندارید."}
+
+    event = get_object_or_404(
+        Event.objects.prefetch_related(
+            'gallery_images',
+            'registrations__user',
+            'registrations__payments__discount_code'
+        ),
+        id=event_id,
+        is_deleted=False,
+    )
+    return event

backend/api/views/gallery.py

@@ -0,0 +1,127 @@
+from django.shortcuts import get_object_or_404
+from django.core.files.base import ContentFile
+
+from ninja import Router, Query, File, UploadedFile
+from typing import List
+import uuid
+
+from gallery.models import Gallery
+from gallery.tasks import process_uploaded_image
+from api.authentication import jwt_auth
+from api.schemas import GallerySchema, GalleryCreateSchema, MessageSchema, ErrorSchema
+
+gallery_router = Router()
+
+@gallery_router.get("/images", response=List[GallerySchema])
+def list_gallery_images(
+    request,
+    page: int = Query(1, ge=1),
+    limit: int = Query(20, ge=1, le=50),
+    public_only: bool = Query(True)
+):
+    """List gallery images"""
+    queryset = Gallery.objects.select_related('uploaded_by')
+    
+    if public_only:
+        queryset = queryset.filter(is_public=True)
+    
+    # Pagination
+    offset = (page - 1) * limit
+    images = queryset[offset:offset + limit]
+    
+    return images
+
+@gallery_router.get("/images/{image_id}", response=GallerySchema)
+def get_gallery_image(request, image_id: int):
+    """Get single gallery image"""
+    image = get_object_or_404(Gallery, id=image_id, is_public=True)
+    return image
+
+@gallery_router.post("/images", response={201: GallerySchema, 400: ErrorSchema}, auth=jwt_auth)
+def upload_image(request, file: UploadedFile = File(...), data: GalleryCreateSchema = None):
+    """Upload image to gallery (committee members only)"""
+    user = request.auth
+    
+    if not (user.is_superuser or user.is_staff):
+        return 400, {"error": "Only committee members can upload images"}
+    
+    # Validate file type
+    if not file.content_type.startswith('image/'):
+        return 400, {"error": "File must be an image"}
+    
+    # Validate file size (10MB max)
+    if file.size > 10 * 1024 * 1024:
+        return 400, {"error": "File size must be less than 10MB"}
+    
+    try:
+        # Create gallery item
+        gallery_item = Gallery.objects.create(
+            title=data.title if data else file.name,
+            description=data.description if data else "",
+            uploaded_by=user,
+            alt_text=data.alt_text if data else "",
+            is_public=data.is_public if data else True
+        )
+        
+        # Save image
+        filename = f"gallery/{uuid.uuid4().hex}.{file.name.split('.')[-1]}"
+        gallery_item.image.save(filename, ContentFile(file.read()))
+        
+        # Process image asynchronously
+        process_uploaded_image.delay(gallery_item.id)
+        
+        return 201, gallery_item
+        
+    except Exception as e:
+        return 400, {"error": "Failed to upload image", "details": str(e)}
+
+@gallery_router.put("/images/{image_id}", response={200: GallerySchema, 400: ErrorSchema}, auth=jwt_auth)
+def update_image(request, image_id: int, data: GalleryCreateSchema):
+    """Update gallery image metadata"""
+    user = request.auth
+    image = get_object_or_404(Gallery, id=image_id)
+    
+    if not (image.uploaded_by == user or user.is_superuser or user.is_staff):
+        return 400, {"error": "You can only edit your own images"}
+    
+    try:
+        for field, value in data.dict(exclude_unset=True).items():
+            setattr(image, field, value)
+        
+        image.save()
+        return 200, image
+        
+    except Exception as e:
+        return 400, {"error": "Failed to update image", "details": str(e)}
+
+@gallery_router.delete("/images/{image_id}", response={200: MessageSchema, 400: ErrorSchema}, auth=jwt_auth)
+def delete_image(request, image_id: int):
+    """Soft delete a gallery image owned by the requester or committee."""
+    user = request.auth
+    image = get_object_or_404(Gallery, id=image_id)
+    
+    if not (image.uploaded_by == user or user.is_superuser or user.is_staff):
+        return 400, {"error": "You can only delete your own images"}
+    
+    image.delete()
+    return 200, {"message": "Image deleted successfully"}
+
+
+@gallery_router.get("/deleted/images", response=List[GallerySchema], auth=jwt_auth)
+def list_deleted_gallery_images(request):
+    """List all soft-deleted gallery images (Admin/Committee only)"""
+    if not (request.auth.is_staff or request.auth.is_superuser):
+        return 403, {"error": "Permission denied"}
+    return Gallery.deleted_objects.all().select_related('uploaded_by')
+
+@gallery_router.post("/deleted/images/{image_id}/restore", response={200: MessageSchema, 400: ErrorSchema}, auth=jwt_auth)
+def restore_gallery_image(request, image_id: int):
+    """Restore a soft-deleted gallery image (Admin/Committee only)"""
+    if not (request.auth.is_staff or request.auth.is_superuser):
+        return 403, {"error": "Permission denied"}
+    try:
+        image = Gallery.deleted_objects.get(id=image_id)
+        image.restore()
+        return 200, {"message": f"Gallery image '{image.title}' restored successfully."}
+    except Gallery.DoesNotExist:
+        return 400, {"error": "Gallery image not found or not soft-deleted."}

backend/api/views/health.py

@@ -0,0 +1,15 @@
+from ninja import Router
+
+from django.db import connection
+from django.utils import timezone
+
+health_router = Router()
+
+@health_router.get("/health")
+def health(request):
+    try:
+        with connection.cursor() as c:
+            c.execute("SELECT 1;")
+        return {"status": "ok", "time": timezone.now().isoformat()}
+    except Exception as e:
+        return  {"status": "error", "error": str(e)}, 500

backend/api/views/meta.py

@@ -0,0 +1,15 @@
+from ninja import Router
+
+from users.models import Major, University
+
+meta_router = Router(tags=['meta'])
+
+@meta_router.get("/majors")
+def list_majors(request):
+    majors = Major.objects.filter(is_deleted=False, is_active=True).order_by("name")
+    return [{"id": m.id, "code": m.code, "label": m.name} for m in majors]
+
+@meta_router.get("/universities")
+def list_universities(request):
+    universities = University.objects.filter(is_deleted=False, is_active=True).order_by("name")
+    return [{"id": u.id, "code": u.code, "label": u.name} for u in universities]

backend/api/views/payments.py

@@ -0,0 +1,240 @@
+from django.conf import settings
+from django.shortcuts import redirect, get_object_or_404
+from django.utils import timezone
+
+from ninja import Router
+from ninja.errors import HttpError
+import requests
+
+from payments.models import Payment, DiscountCode
+from events.models import Event, Registration
+from api.authentication import jwt_auth
+from api.schemas.payments import CouponVerifyIn, CouponVerifyOut, CreatePaymentIn, CreatePaymentOut, PaymentDetailOut
+
+payments_router = Router(tags=["Payments"])
+
+
+@payments_router.post("create", response=CreatePaymentOut, auth=jwt_auth)
+def create_payment(request, payload: CreatePaymentIn):
+    event = get_object_or_404(Event, pk=payload.event_id)
+
+    if Payment.objects.filter(status=Payment.OrderStatusChoices.PAID, user=request.auth, event=event).exists():
+        raise HttpError(400, "You have already registered in this event")
+
+    registration = (
+        Registration.objects.filter(event=event, user=request.auth, is_deleted=False)
+        .order_by("-registered_at")
+        .first()
+    )
+    if not registration or registration.status == Registration.StatusChoices.CANCELLED:
+        registration = Registration.objects.create(
+            event=event,
+            user=request.auth,
+            status=Registration.StatusChoices.PENDING,
+            final_price=event.price,
+        )
+    elif registration.final_price is None:
+        registration.final_price = event.price
+        registration.save(update_fields=["final_price"])
+
+    discount_code = None
+    discount_amount = 0
+    final_amount = event.price
+
+    if payload.discount_code:
+        discount_code = DiscountCode.objects.filter(code=payload.discount_code, applicable_events=event, is_active=True).first()
+
+        if discount_code:
+            final_amount, discount_amount = discount_code.calculate_discount(event, request.auth)
+
+    registration_updates = []
+    if discount_code and registration.discount_code_id != discount_code.id:
+        registration.discount_code = discount_code
+        registration_updates.append("discount_code")
+    if registration.discount_amount != discount_amount:
+        registration.discount_amount = discount_amount
+        registration_updates.append("discount_amount")
+    if registration.final_price != final_amount:
+        registration.final_price = final_amount
+        registration_updates.append("final_price")
+
+    if final_amount == 0:
+        if registration.status != Registration.StatusChoices.CONFIRMED:
+            registration.status = Registration.StatusChoices.CONFIRMED
+            registration_updates.append("status")
+        if registration_updates:
+            registration.save(update_fields=list(set(registration_updates)))
+        else:
+            registration.save(update_fields=["status"])
+
+        return {
+            "start_pay_url": None,
+            "authority": None,
+            "base_amount": event.price,
+            "discount_amount": discount_amount if discount_amount else 0,
+            "amount": 0,
+        }
+
+    if registration_updates:
+        registration.save(update_fields=list(set(registration_updates)))
+
+    pay = Payment.objects.create(
+        user=request.auth,
+        event=event,
+        base_amount=event.price,
+        discount_code=discount_code,
+        discount_amount=discount_amount,
+        amount=final_amount,
+        status=Payment.OrderStatusChoices.INIT,
+        registration=registration,
+    )
+
+    callback_url = getattr(settings, "ZARINPAL_CALLBACK_URL", "http://localhost:8000/api/payments/callback")
+    body = {
+        "merchant_id": settings.ZARINPAL_MERCHANT_ID,
+        "amount": final_amount,
+        "callback_url": callback_url,
+        "description": payload.description,
+        "metadata": {
+            k: v for k, v in {
+                "mobile": payload.mobile,
+                "email":  payload.email,
+                "event_id": event.id,
+                "user_id": request.auth.id,
+                "payment_id": pay.id,
+                "discount_code": discount_code.code if discount_code else None,
+            }.items() if v
+        }
+    }
+
+    try:
+        response = requests.post(
+            settings.ZARINPAL_REQUEST_URL,
+            json=body,
+            headers={"accept":"application/json","content-type":"application/json"},
+            timeout=15
+        )
+        jd = response.json()
+    except Exception as e:
+        pay.delete()
+        raise HttpError(502, f"Gateway request failed: {e}")
+
+    code = (jd.get("data") or {}).get("code")
+    if code != 100:
+        pay.delete()
+        raise HttpError(502, f"Zarinpal error: {jd.get('errors') or jd}")
+
+    authority = jd["data"]["authority"]
+    pay.authority = authority
+    pay.status = Payment.OrderStatusChoices.PENDING
+    pay.save(update_fields=["authority","status"])
+
+    return {
+        "start_pay_url": f"{settings.ZARINPAL_STARTPAY}{authority}",
+        "authority": authority,
+        "base_amount": event.price,
+        "discount_amount": discount_amount if discount_amount else 0,
+        "amount": final_amount,
+    }
+
+@payments_router.get("callback")
+def callback(request, Authority: str | None = None, Status: str | None = None):
+    if not Authority:
+        raise HttpError(400, "Missing Authority")
+
+    pay = Payment.objects.filter(authority=Authority).select_related("event","user","discount_code").first()
+    if not pay:
+        raise HttpError(404, "Payment not found")
+
+    if Status != "OK":
+        pay.status = Payment.OrderStatusChoices.CANCELED
+        pay.save(update_fields=["status"])
+        return redirect(f"{settings.FRONTEND_CALLBACK_URL}?status=failed&event_id={pay.event_id}")
+
+    verify_body = {
+        "merchant_id": settings.ZARINPAL_MERCHANT_ID,
+        "amount": pay.amount,
+        "authority": Authority,
+    }
+
+    try:
+        vresp = requests.post(
+            settings.ZARINPAL_VERIFY_URL,
+            json=verify_body,
+            headers={"accept":"application/json","content-type":"application/json"},
+            timeout=15
+        )
+        vjd = vresp.json()
+    except Exception:
+        pay.status = Payment.OrderStatusChoices.FAILED
+        pay.save(update_fields=["status"])
+        return redirect(f"{settings.FRONTEND_CALLBACK_URL}?status=failed&event_id={pay.event_id}")
+
+    vcode = (vjd.get("data") or {}).get("code")
+    if vcode in (100, 101):
+        data = vjd.get("data") or {}
+        pay.status = Payment.OrderStatusChoices.PAID
+        pay.ref_id = data.get("ref_id")
+        pay.card_pan = data.get("card_pan")
+        pay.card_hash = data.get("card_hash")
+        pay.verified_at = timezone.now()
+        pay.save(update_fields=["status", "ref_id", "card_pan", "card_hash", "verified_at"])
+
+        registration = pay.registration or Registration.objects.filter(
+            user=pay.user,
+            event=pay.event,
+            status=Registration.StatusChoices.PENDING,
+        ).first()
+        if registration:
+            registration.status = Registration.StatusChoices.CONFIRMED
+            updates = ["status"]
+            if registration.final_price is None:
+                registration.final_price = pay.amount
+                updates.append("final_price")
+            registration.save(update_fields=updates)
+
+        return redirect(f"{settings.FRONTEND_CALLBACK_URL}?status=success&event_id={pay.event_id}&ref_id={pay.ref_id}")
+
+    pay.status = Payment.OrderStatusChoices.FAILED
+    pay.save(update_fields=["status"])
+    return redirect(f"{settings.FRONTEND_CALLBACK_URL}?status=failed&event_id={pay.event_id}")
+
+@payments_router.get("by-ref/{ref_id}", response=PaymentDetailOut)
+def payment_by_ref(request, ref_id: str):
+    pay = get_object_or_404(Payment.objects.select_related("event"), ref_id=ref_id)
+    ev = pay.event
+    return {
+        "ref_id": pay.ref_id,
+        "authority": pay.authority,
+        "base_amount": pay.base_amount,
+        "discount_amount": pay.discount_amount or 0,
+        "amount": pay.amount,
+        "status": pay.get_status_display(),
+        "verified_at": pay.verified_at.isoformat() if pay.verified_at else None,
+        "event": {
+            "id": ev.id,
+            "title": ev.title,
+            "slug": ev.slug,
+            "image_url": request.build_absolute_uri(ev.featured_image.url) if ev.featured_image else None,
+            "success_markdown": ev.registration_success_markdown,
+        },
+    }
+
+@payments_router.post("/coupon/check", response=CouponVerifyOut, auth=jwt_auth)
+def check_coupon(request, payload: CouponVerifyIn):
+    event = get_object_or_404(Event, id=payload.event_id)
+    code = payload.code
+
+    if not code:
+        raise HttpError(404, "لطفا کد تخفیف را وارد کنید")
+
+    try:
+        c = DiscountCode.objects.get(code=code, applicable_events=event, is_active=True)
+        final_price, disc = c.calculate_discount(event, request.auth)
+        return {
+            "discount_amount": disc, 
+            "final_price": final_price,
+        }
+
+    except DiscountCode.DoesNotExist:
+        raise HttpError(404, "کد تخفیف معتبر نیست")

backend/blog/admin.py

@@ -0,0 +1,159 @@
+from django import forms
+from django.contrib import admin
+
+from import_export.admin import ImportExportModelAdmin
+from simplemde.widgets import SimpleMDEEditor
+
+from blog.models import Category, Tag, Post, Comment, Like
+from blog.resources import PostResource, CategoryResource
+from utils.admin import SoftDeleteListFilter, BaseModelAdmin
+
+@admin.register(Category)
+class CategoryAdmin(BaseModelAdmin, ImportExportModelAdmin):
+    resource_class = CategoryResource
+    list_display = ('name', 'slug', 'created_at', 'is_deleted')
+    list_filter = ('created_at', 'is_deleted', SoftDeleteListFilter)
+    search_fields = ('name', 'description')
+    prepopulated_fields = {'slug': ('name',)}
+    readonly_fields = ('created_at', 'updated_at', 'deleted_at')
+
+    fieldsets = (
+        ('Content', {
+            'fields': ('name', 'slug', 'description')
+        }),
+        ('Metadata', {
+            'fields': ('created_at', 'updated_at')
+        }),
+        ('Soft Delete', {
+            'fields': ('is_deleted', 'deleted_at'),
+            'classes': ('collapse',)
+        })
+    )
+    actions = BaseModelAdmin.actions + ['restore_categories']
+    
+    def restore_categories(self, request, queryset):
+        for category in queryset:
+            category.restore()
+        self.message_user(request, f"Restored {queryset.count()} categories.")
+    restore_categories.short_description = "Restore selected categories"
+
+@admin.register(Tag)
+class TagAdmin(BaseModelAdmin, ImportExportModelAdmin):
+    list_display = ('name', 'slug', 'created_at', 'is_deleted')
+    list_filter = ('created_at', 'is_deleted', SoftDeleteListFilter)
+    search_fields = ('name',)
+    prepopulated_fields = {'slug': ('name',)}
+    readonly_fields = ('created_at', 'updated_at', 'deleted_at')
+
+    fieldsets = (
+        ('Content', {
+            'fields': ('name', 'slug')
+        }),
+        ('Metadata', {
+            'fields': ('created_at', 'updated_at')
+        }),
+        ('Soft Delete', {
+            'fields': ('is_deleted', 'deleted_at'),
+            'classes': ('collapse',)
+        })
+    )
+
+
+class PostAdminForm(forms.ModelForm):
+    content = forms.CharField(widget=SimpleMDEEditor())
+    excerpt = forms.CharField(widget=SimpleMDEEditor())
+
+    class Meta:
+        model = Post
+        fields = '__all__'
+
+
+@admin.register(Post)
+class PostAdmin(BaseModelAdmin, ImportExportModelAdmin):
+    form = PostAdminForm
+    resource_class = PostResource
+    list_display = ('title', 'author', 'status', 'category', 'is_featured', 'published_at', 'created_at')
+    list_filter = ('status', 'is_featured', 'category', 'tags', 'created_at', 'published_at', SoftDeleteListFilter)
+    search_fields = ('title', 'content', 'author__username')
+    prepopulated_fields = {'slug': ('title',)}
+    filter_horizontal = ('tags',)
+    date_hierarchy = 'published_at'
+    
+    fieldsets = (
+        ('Content', {
+            'fields': ('title', 'slug', 'content', 'excerpt', 'featured_image')
+        }),
+        ('Metadata', {
+            'fields': ('author', 'category', 'tags', 'status', 'is_featured', 'published_at')
+        }),
+        ('Soft Delete', {
+            'fields': ('is_deleted', 'deleted_at'),
+            'classes': ('collapse',)
+        }),
+    )
+    
+    readonly_fields = ('deleted_at',)
+
+    actions = BaseModelAdmin.actions + ['make_published', 'make_draft', 'make_featured', 'restore_posts']
+    
+    def make_published(self, request, queryset):
+        queryset.update(status='published')
+        self.message_user(request, f"Published {queryset.count()} posts.")
+    make_published.short_description = "Mark selected posts as published"
+    
+    def make_draft(self, request, queryset):
+        queryset.update(status='draft')
+        self.message_user(request, f"Marked {queryset.count()} posts as draft.")
+    make_draft.short_description = "Mark selected posts as draft"
+    
+    def make_featured(self, request, queryset):
+        queryset.update(is_featured=True)
+        self.message_user(request, f"Featured {queryset.count()} posts.")
+    make_featured.short_description = "Mark selected posts as featured"
+    
+    def restore_posts(self, request, queryset):
+        for post in queryset:
+            post.restore()
+        self.message_user(request, f"Restored {queryset.count()} posts.")
+    restore_posts.short_description = "Restore selected posts"
+
+@admin.register(Comment)
+class CommentAdmin(BaseModelAdmin):
+    list_display = ('author', 'post', 'content_preview', 'is_approved', 'created_at')
+    list_filter = ('is_approved', 'created_at', 'post', SoftDeleteListFilter)
+    search_fields = ('content', 'author__username', 'author__last_name', 'author__first_name', 'post__title')
+    readonly_fields = ('content_preview', 'created_at', 'updated_at', 'deleted_at')
+
+    fieldsets = (
+        ('Content', {
+            'fields': ('post', 'author', 'content')
+        }),
+        ('Metadata', {
+            'fields': ('is_approved', 'created_at', 'updated_at')
+        }),
+        ('Soft Delete', {
+            'fields': ('is_deleted', 'deleted_at'),
+            'classes': ('collapse',)
+        })
+    )
+    actions = BaseModelAdmin.actions + ['approve_comments', 'disapprove_comments']
+    
+    def content_preview(self, obj):
+        return obj.content[:50] + '...' if len(obj.content) > 50 else obj.content
+    content_preview.short_description = 'Content Preview'
+    
+    def approve_comments(self, request, queryset):
+        queryset.update(is_approved=True)
+        self.message_user(request, f"Approved {queryset.count()} comments.")
+    approve_comments.short_description = "Approve selected comments"
+    
+    def disapprove_comments(self, request, queryset):
+        queryset.update(is_approved=False)
+        self.message_user(request, f"Disapproved {queryset.count()} comments.")
+    disapprove_comments.short_description = "Disapprove selected comments"
+
+@admin.register(Like)
+class LikeAdmin(BaseModelAdmin):
+    list_display = ('user', 'post', 'created_at')
+    list_filter = ('created_at', 'post')
+    search_fields = ('user__username', 'post__title')

backend/blog/apps.py

@@ -0,0 +1,5 @@
+from django.apps import AppConfig
+
+class BlogConfig(AppConfig):
+    default_auto_field = 'django.db.models.BigAutoField'
+    name = 'blog'

backend/blog/fixtures/blog.json

@@ -0,0 +1,672 @@
+[
+  {
+    "model": "blog.category",
+    "pk": 1,
+    "fields": {
+      "name": "هوش مصنوعی",
+      "slug": "artificial-intelligence",
+      "description": "مقالات مربوط به هوش مصنوعی و یادگیری ماشین",
+      "created_at": "2024-01-01T10:00:00Z",
+      "updated_at": "2024-01-01T10:00:00Z",
+      "is_deleted": false
+    }
+  },
+  {
+    "model": "blog.category",
+    "pk": 2,
+    "fields": {
+      "name": "برنامه‌نویسی وب",
+      "slug": "web-programming",
+      "description": "آموزش‌ها و مقالات مربوط به توسعه وب",
+      "created_at": "2024-01-02T10:00:00Z",
+      "updated_at": "2024-01-02T10:00:00Z",
+      "is_deleted": false
+    }
+  },
+  {
+    "model": "blog.category",
+    "pk": 3,
+    "fields": {
+      "name": "امنیت سایبری",
+      "slug": "cybersecurity",
+      "description": "مطالب مربوط به امنیت اطلاعات و سایبری",
+      "created_at": "2024-01-03T10:00:00Z",
+      "updated_at": "2024-01-03T10:00:00Z",
+      "is_deleted": false
+    }
+  },
+  {
+    "model": "blog.category",
+    "pk": 4,
+    "fields": {
+      "name": "علم داده",
+      "slug": "data-science",
+      "description": "مقالات مربوط به تحلیل داده و علم داده",
+      "created_at": "2024-01-04T10:00:00Z",
+      "updated_at": "2024-01-04T10:00:00Z",
+      "is_deleted": false
+    }
+  },
+  {
+    "model": "blog.category",
+    "pk": 5,
+    "fields": {
+      "name": "اپلیکیشن موبایل",
+      "slug": "mobile-app",
+      "description": "توسعه اپلیکیشن‌های موبایل",
+      "created_at": "2024-01-05T10:00:00Z",
+      "updated_at": "2024-01-05T10:00:00Z",
+      "is_deleted": false
+    }
+  },
+  {
+    "model": "blog.category",
+    "pk": 6,
+    "fields": {
+      "name": "شبکه کامپیوتری",
+      "slug": "computer-networks",
+      "description": "مطالب مربوط به شبکه‌های کامپیوتری",
+      "created_at": "2024-01-06T10:00:00Z",
+      "updated_at": "2024-01-06T10:00:00Z",
+      "is_deleted": false
+    }
+  },
+  {
+    "model": "blog.category",
+    "pk": 7,
+    "fields": {
+      "name": "بازی‌سازی",
+      "slug": "game-development",
+      "description": "آموزش و مقالات مربوط به توسعه بازی",
+      "created_at": "2024-01-07T10:00:00Z",
+      "updated_at": "2024-01-07T10:00:00Z",
+      "is_deleted": false
+    }
+  },
+  {
+    "model": "blog.category",
+    "pk": 8,
+    "fields": {
+      "name": "طراحی UI/UX",
+      "slug": "ui-ux-design",
+      "description": "طراحی رابط کاربری و تجربه کاربری",
+      "created_at": "2024-01-08T10:00:00Z",
+      "updated_at": "2024-01-08T10:00:00Z",
+      "is_deleted": false
+    }
+  },
+  {
+    "model": "blog.category",
+    "pk": 9,
+    "fields": {
+      "name": "اخبار انجمن",
+      "slug": "association-news",
+      "description": "اخبار و اطلاعیه‌های انجمن علمی",
+      "created_at": "2024-01-09T10:00:00Z",
+      "updated_at": "2024-01-09T10:00:00Z",
+      "is_deleted": false
+    }
+  },
+  {
+    "model": "blog.category",
+    "pk": 10,
+    "fields": {
+      "name": "مسابقات برنامه‌نویسی",
+      "slug": "programming-contests",
+      "description": "اطلاعات مربوط به مسابقات برنامه‌نویسی",
+      "created_at": "2024-01-10T10:00:00Z",
+      "updated_at": "2024-01-10T10:00:00Z",
+      "is_deleted": false
+    }
+  },
+  {
+    "model": "blog.tag",
+    "pk": 1,
+    "fields": {
+      "name": "پایتون",
+      "slug": "python",
+      "created_at": "2024-01-01T10:00:00Z",
+      "updated_at": "2024-01-01T10:00:00Z",
+      "is_deleted": false
+    }
+  },
+  {
+    "model": "blog.tag",
+    "pk": 2,
+    "fields": {
+      "name": "جاوااسکریپت",
+      "slug": "javascript",
+      "created_at": "2024-01-02T10:00:00Z",
+      "updated_at": "2024-01-02T10:00:00Z",
+      "is_deleted": false
+    }
+  },
+  {
+    "model": "blog.tag",
+    "pk": 3,
+    "fields": {
+      "name": "ری‌اکت",
+      "slug": "react",
+      "created_at": "2024-01-03T10:00:00Z",
+      "updated_at": "2024-01-03T10:00:00Z",
+      "is_deleted": false
+    }
+  },
+  {
+    "model": "blog.tag",
+    "pk": 4,
+    "fields": {
+      "name": "جنگو",
+      "slug": "django",
+      "created_at": "2024-01-04T10:00:00Z",
+      "updated_at": "2024-01-04T10:00:00Z",
+      "is_deleted": false
+    }
+  },
+  {
+    "model": "blog.tag",
+    "pk": 5,
+    "fields": {
+      "name": "یادگیری عمیق",
+      "slug": "deep-learning",
+      "created_at": "2024-01-05T10:00:00Z",
+      "updated_at": "2024-01-05T10:00:00Z",
+      "is_deleted": false
+    }
+  },
+  {
+    "model": "blog.tag",
+    "pk": 6,
+    "fields": {
+      "name": "تنسورفلو",
+      "slug": "tensorflow",
+      "created_at": "2024-01-06T10:00:00Z",
+      "updated_at": "2024-01-06T10:00:00Z",
+      "is_deleted": false
+    }
+  },
+  {
+    "model": "blog.tag",
+    "pk": 7,
+    "fields": {
+      "name": "کیبرنتیز",
+      "slug": "kubernetes",
+      "created_at": "2024-01-07T10:00:00Z",
+      "updated_at": "2024-01-07T10:00:00Z",
+      "is_deleted": false
+    }
+  },
+  {
+    "model": "blog.tag",
+    "pk": 8,
+    "fields": {
+      "name": "داکر",
+      "slug": "docker",
+      "created_at": "2024-01-08T10:00:00Z",
+      "updated_at": "2024-01-08T10:00:00Z",
+      "is_deleted": false
+    }
+  },
+  {
+    "model": "blog.tag",
+    "pk": 9,
+    "fields": {
+      "name": "گیت",
+      "slug": "git",
+      "created_at": "2024-01-09T10:00:00Z",
+      "updated_at": "2024-01-09T10:00:00Z",
+      "is_deleted": false
+    }
+  },
+  {
+    "model": "blog.tag",
+    "pk": 10,
+    "fields": {
+      "name": "لینوکس",
+      "slug": "linux",
+      "created_at": "2024-01-10T10:00:00Z",
+      "updated_at": "2024-01-10T10:00:00Z",
+      "is_deleted": false
+    }
+  },
+  {
+    "model": "blog.tag",
+    "pk": 11,
+    "fields": {
+      "name": "الگوریتم",
+      "slug": "algorithm",
+      "created_at": "2024-01-11T10:00:00Z",
+      "updated_at": "2024-01-11T10:00:00Z",
+      "is_deleted": false
+    }
+  },
+  {
+    "model": "blog.tag",
+    "pk": 12,
+    "fields": {
+      "name": "ساختمان داده",
+      "slug": "data-structure",
+      "created_at": "2024-01-12T10:00:00Z",
+      "updated_at": "2024-01-12T10:00:00Z",
+      "is_deleted": false
+    }
+  },
+  {
+    "model": "blog.post",
+    "pk": 1,
+    "fields": {
+      "title": "مقدمه‌ای بر یادگیری ماشین با پایتون",
+      "slug": "introduction-to-machine-learning-with-python",
+      "content": "# مقدمه‌ای بر یادگیری ماشین با پایتون\n\nیادگیری ماشین یکی از مهم‌ترین شاخه‌های هوش مصنوعی است که امروزه کاربردهای فراوانی در صنایع مختلف دارد.\n\n## کتابخانه‌های مهم\n\n- **Scikit-learn**: برای الگوریتم‌های کلاسیک\n- **TensorFlow**: برای یادگیری عمیق\n- **Pandas**: برای پردازش داده\n- **NumPy**: برای محاسبات عددی\n\n## مثال ساده\n\n```python\nfrom sklearn.linear_model import LinearRegression\nimport numpy as np\n\n# داده‌های نمونه\nX = np.array([[1], [2], [3], [4]])\ny = np.array([2, 4, 6, 8])\n\n# ایجاد مدل\nmodel = LinearRegression()\nmodel.fit(X, y)\n\n# پیش‌بینی\nprint(model.predict([[5]]))\n```\n\nاین مثال ساده نشان می‌دهد که چگونه می‌توان با استفاده از کتابخانه Scikit-learn یک مدل رگرسیون خطی ایجاد کرد.",
+      "excerpt": "آموزش مقدماتی یادگیری ماشین با استفاده از زبان پایتون و کتابخانه‌های محبوب",
+      "author": 1,
+      "status": "published",
+      "published_at": "2024-01-15T10:00:00Z",
+      "category": 1,
+      "is_featured": true,
+      "created_at": "2024-01-15T09:00:00Z",
+      "updated_at": "2024-01-15T09:00:00Z",
+      "is_deleted": false
+    }
+  },
+  {
+    "model": "blog.post",
+    "pk": 2,
+    "fields": {
+      "title": "ساخت API با Django REST Framework",
+      "slug": "building-api-with-django-rest-framework",
+      "content": "# ساخت API با Django REST Framework\n\nDjango REST Framework یکی از قدرتمندترین ابزارها برای ساخت API در پایتون است.\n\n## نصب و راه‌اندازی\n\n```bash\npip install djangorestframework\n```\n\n## ایجاد Serializer\n\n```python\nfrom rest_framework import serializers\nfrom .models import Post\n\nclass PostSerializer(serializers.ModelSerializer):\n    class Meta:\n        model = Post\n        fields = '__all__'\n```\n\n## ایجاد ViewSet\n\n```python\nfrom rest_framework import viewsets\nfrom .models import Post\nfrom .serializers import PostSerializer\n\nclass PostViewSet(viewsets.ModelViewSet):\n    queryset = Post.objects.all()\n    serializer_class = PostSerializer\n```\n\nبا این روش می‌توانید به راحتی API های قدرتمند و قابل اعتماد بسازید.",
+      "excerpt": "آموزش گام به گام ساخت API با استفاده از Django REST Framework",
+      "author": 2,
+      "status": "published",
+      "published_at": "2024-01-20T14:30:00Z",
+      "category": 2,
+      "is_featured": false,
+      "created_at": "2024-01-20T13:30:00Z",
+      "updated_at": "2024-01-20T13:30:00Z",
+      "is_deleted": false
+    }
+  },
+  {
+    "model": "blog.post",
+    "pk": 3,
+    "fields": {
+      "title": "امنیت در اپلیکیشن‌های وب",
+      "slug": "web-application-security",
+      "content": "# امنیت در اپلیکیشن‌های وب\n\nامنیت یکی از مهم‌ترین جنبه‌های توسعه اپلیکیشن‌های وب است.\n\n## تهدیدات رایج\n\n- **SQL Injection**: تزریق کد SQL مخرب\n- **XSS**: اجرای اسکریپت مخرب در مرورگر\n- **CSRF**: درخواست جعلی بین سایتی\n- **Authentication Bypass**: دور زدن احراز هویت\n\n## راه‌های محافظت\n\n```python\n# استفاده از ORM برای جلوگیری از SQL Injection\nUser.objects.filter(username=username)\n\n# Escape کردن خروجی HTML\nfrom django.utils.html import escape\nsafe_content = escape(user_input)\n\n# استفاده از CSRF Token\n{% csrf_token %}\n```\n\nهمیشه امنیت را در اولویت قرار دهید.",
+      "excerpt": "بررسی تهدیدات امنیتی رایج در اپلیکیشن‌های وب و راه‌های مقابله با آن‌ها",
+      "author": 3,
+      "status": "published",
+      "published_at": "2024-01-25T16:00:00Z",
+      "category": 3,
+      "is_featured": true,
+      "created_at": "2024-01-25T15:00:00Z",
+      "updated_at": "2024-01-25T15:00:00Z",
+      "is_deleted": false
+    }
+  },
+  {
+    "model": "blog.post",
+    "pk": 4,
+    "fields": {
+      "title": "تحلیل داده با Pandas",
+      "slug": "data-analysis-with-pandas",
+      "content": "# تحلیل داده با Pandas\n\nPandas یکی از قدرتمندترین کتابخانه‌های پایتون برای تحلیل داده است.\n\n## خواندن داده\n\n```python\nimport pandas as pd\n\n# خواندن از CSV\ndf = pd.read_csv('data.csv')\n\n# خواندن از Excel\ndf = pd.read_excel('data.xlsx')\n\n# خواندن از JSON\ndf = pd.read_json('data.json')\n```\n\n## عملیات پایه\n\n```python\n# نمایش اطلاعات کلی\nprint(df.info())\nprint(df.describe())\n\n# فیلتر کردن\nfiltered_df = df[df['age'] > 25]\n\n# گروه‌بندی\ngrouped = df.groupby('category').mean()\n```\n\nPandas ابزاری قدرتمند برای تحلیل داده است.",
+      "excerpt": "آموزش کار با کتابخانه Pandas برای تحلیل و پردازش داده در پایتون",
+      "author": 4,
+      "status": "published",
+      "published_at": "2024-02-01T11:00:00Z",
+      "category": 4,
+      "is_featured": false,
+      "created_at": "2024-02-01T10:00:00Z",
+      "updated_at": "2024-02-01T10:00:00Z",
+      "is_deleted": false
+    }
+  },
+  {
+    "model": "blog.post",
+    "pk": 5,
+    "fields": {
+      "title": "توسعه اپلیکیشن موبایل با React Native",
+      "slug": "mobile-app-development-with-react-native",
+      "content": "# توسعه اپلیکیشن موبایل با React Native\n\nReact Native امکان توسعه اپلیکیشن‌های موبایل کراس پلتفرم را فراهم می‌کند.\n\n## مزایا\n\n- **کراس پلتفرم**: یک کد برای iOS و Android\n- **Performance**: عملکرد نزدیک به Native\n- **Hot Reload**: تغییرات فوری\n- **Community**: جامعه بزرگ و فعال\n\n## شروع پروژه\n\n```bash\nnpx react-native init MyApp\ncd MyApp\nnpx react-native run-android\n```\n\n## کامپوننت ساده\n\n```jsx\nimport React from 'react';\nimport { View, Text, StyleSheet } from 'react-native';\n\nconst App = () => {\n  return (\n    <View style={styles.container}>\n      <Text style={styles.title}>سلام دنیا!</Text>\n    </View>\n  );\n};\n\nconst styles = StyleSheet.create({\n  container: {\n    flex: 1,\n    justifyContent: 'center',\n    alignItems: 'center',\n  },\n  title: {\n    fontSize: 24,\n    fontWeight: 'bold',\n  },\n});\n\nexport default App;\n```",
+      "excerpt": "راهنمای شروع توسعه اپلیکیشن موبایل با React Native",
+      "author": 5,
+      "status": "published",
+      "published_at": "2024-02-05T13:30:00Z",
+      "category": 5,
+      "is_featured": false,
+      "created_at": "2024-02-05T12:30:00Z",
+      "updated_at": "2024-02-05T12:30:00Z",
+      "is_deleted": false
+    }
+  },
+  {
+    "model": "blog.post",
+    "pk": 6,
+    "fields": {
+      "title": "مبانی شبکه‌های کامپیوتری",
+      "slug": "computer-networks-fundamentals",
+      "content": "# مبانی شبکه‌های کامپیوتری\n\nشبکه‌های کامپیوتری پایه و اساس ارتباطات مدرن هستند.\n\n## مدل OSI\n\n1. **Physical Layer**: لایه فیزیکی\n2. **Data Link Layer**: لایه پیوند داده\n3. **Network Layer**: لایه شبکه\n4. **Transport Layer**: لایه انتقال\n5. **Session Layer**: لایه جلسه\n6. **Presentation Layer**: لایه ارائه\n7. **Application Layer**: لایه کاربرد\n\n## پروتکل‌های مهم\n\n- **TCP/IP**: پروتکل اصلی اینترنت\n- **HTTP/HTTPS**: انتقال صفحات وب\n- **FTP**: انتقال فایل\n- **SMTP**: ارسال ایمیل\n- **DNS**: تبدیل نام دامنه\n\n## مثال ساده با Python\n\n```python\nimport socket\n\n# ایجاد سوکت\ns = socket.socket(socket.AF_INET, socket.SOCK_STREAM)\n\n# اتصال به سرور\ns.connect(('google.com', 80))\n\n# ارسال درخواست HTTP\nrequest = \"GET / HTTP/1.1\\r\\nHost: google.com\\r\\n\\r\\n\"\ns.send(request.encode())\n\n# دریافت پاسخ\nresponse = s.recv(1024)\nprint(response.decode())\n\ns.close()\n```",
+      "excerpt": "آشنایی با مفاهیم پایه شبکه‌های کامپیوتری و پروتکل‌های مهم",
+      "author": 6,
+      "status": "published",
+      "published_at": "2024-02-10T15:00:00Z",
+      "category": 6,
+      "is_featured": false,
+      "created_at": "2024-02-10T14:00:00Z",
+      "updated_at": "2024-02-10T14:00:00Z",
+      "is_deleted": false
+    }
+  },
+  {
+    "model": "blog.post",
+    "pk": 7,
+    "fields": {
+      "title": "ساخت بازی با Unity",
+      "slug": "game-development-with-unity",
+      "content": "# ساخت بازی با Unity\n\nUnity یکی از محبوب‌ترین موتورهای بازی‌سازی است.\n\n## ویژگی‌های Unity\n\n- **کراس پلتفرم**: انتشار در پلتفرم‌های مختلف\n- **Visual Scripting**: برنامه‌نویسی بصری\n- **Asset Store**: فروشگاه منابع\n- **Community**: جامعه بزرگ\n\n## اسکریپت ساده C#\n\n```csharp\nusing UnityEngine;\n\npublic class PlayerController : MonoBehaviour\n{\n    public float speed = 5.0f;\n    \n    void Update()\n    {\n        float horizontal = Input.GetAxis(\"Horizontal\");\n        float vertical = Input.GetAxis(\"Vertical\");\n        \n        Vector3 movement = new Vector3(horizontal, 0, vertical);\n        transform.Translate(movement * speed * Time.deltaTime);\n    }\n}\n```\n\n## مراحل ساخت بازی\n\n1. **طراحی**: ایده و مفهوم بازی\n2. **Prototyping**: نمونه اولیه\n3. **Development**: توسعه اصلی\n4. **Testing**: تست و رفع باگ\n5. **Publishing**: انتشار بازی\n\nUnity ابزاری قدرتمند برای ساخت بازی است.",
+      "excerpt": "راهنمای شروع بازی‌سازی با موتور Unity",
+      "author": 7,
+      "status": "published",
+      "published_at": "2024-02-15T12:00:00Z",
+      "category": 7,
+      "is_featured": true,
+      "created_at": "2024-02-15T11:00:00Z",
+      "updated_at": "2024-02-15T11:00:00Z",
+      "is_deleted": false
+    }
+  },
+  {
+    "model": "blog.post",
+    "pk": 8,
+    "fields": {
+      "title": "اصول طراحی UI/UX",
+      "slug": "ui-ux-design-principles",
+      "content": "# اصول طراحی UI/UX\n\nطراحی رابط کاربری و تجربه کاربری نقش مهمی در موفقیت محصولات دیجیتال دارد.\n\n## اصول UI\n\n- **Consistency**: یکنواختی در طراحی\n- **Hierarchy**: سلسله مراتب بصری\n- **Contrast**: تضاد مناسب\n- **Alignment**: تراز بندی صحیح\n- **Proximity**: قرارگیری عناصر مرتبط\n\n## اصول UX\n\n- **Usability**: قابلیت استفاده\n- **Accessibility**: دسترسی‌پذیری\n- **User-Centered**: محوریت کاربر\n- **Feedback**: بازخورد مناسب\n- **Error Prevention**: جلوگیری از خطا\n\n## ابزارهای طراحی\n\n- **Figma**: طراحی رابط کاربری\n- **Adobe XD**: پروتوتایپ سازی\n- **Sketch**: طراحی برای Mac\n- **InVision**: همکاری تیمی\n\n## فرآیند طراحی\n\n1. **Research**: تحقیق و بررسی\n2. **Wireframing**: طراحی اسکلت\n3. **Prototyping**: نمونه‌سازی\n4. **Testing**: تست با کاربران\n5. **Iteration**: بهبود مداوم",
+      "excerpt": "آشنایی با اصول و مبانی طراحی رابط کاربری و تجربه کاربری",
+      "author": 8,
+      "status": "published",
+      "published_at": "2024-02-20T14:30:00Z",
+      "category": 8,
+      "is_featured": false,
+      "created_at": "2024-02-20T13:30:00Z",
+      "updated_at": "2024-02-20T13:30:00Z",
+      "is_deleted": false
+    }
+  },
+  {
+    "model": "blog.post",
+    "pk": 9,
+    "fields": {
+      "title": "اطلاعیه برگزاری مسابقه برنامه‌نویسی",
+      "slug": "programming-contest-announcement",
+      "content": "# اطلاعیه برگزاری مسابقه برنامه‌نویسی\n\nانجمن علمی مهندسی کامپیوتر دانشگاه برگزاری مسابقه برنامه‌نویسی بهاری را اعلام می‌کند.\n\n## جزئیات مسابقه\n\n- **تاریخ**: ۲۲ مارس ۲۰۲۴\n- **زمان**: ۹ صبح تا ۱۲ ظهر\n- **مکان**: آزمایشگاه کامپیوتر شماره ۱\n- **مدت زمان**: ۳ ساعت\n- **تعداد مسائل**: ۸ مسئله\n\n## جوایز\n\n- **نفر اول**: ۵ میلیون تومان\n- **نفر دوم**: ۳ میلیون تومان\n- **نفر سوم**: ۲ میلیون تومان\n\n## قوانین\n\n- مسابقه به صورت انفرادی برگزار می‌شود\n- زبان‌های مجاز: C++, Java, Python\n- استفاده از اینترنت ممنوع است\n- ثبت نام تا ۲۰ مارس ادامه دارد\n\n## ثبت نام\n\nبرای ثبت نام به دفتر انجمن مراجعه کنید یا از طریق وب‌سایت اقدام نمایید.\n\nمنتظر حضور گرم شما هستیم!",
+      "excerpt": "اطلاعیه برگزاری مسابقه برنامه‌نویسی بهاری انجمن علمی",
+      "author": 1,
+      "status": "published",
+      "published_at": "2024-02-25T10:00:00Z",
+      "category": 9,
+      "is_featured": true,
+      "created_at": "2024-02-25T09:00:00Z",
+      "updated_at": "2024-02-25T09:00:00Z",
+      "is_deleted": false
+    }
+  },
+  {
+    "model": "blog.post",
+    "pk": 10,
+    "fields": {
+      "title": "نتایج مسابقه ACM ICPC منطقه‌ای",
+      "slug": "acm-icpc-regional-results",
+      "content": "# نتایج مسابقه ACM ICPC منطقه‌ای\n\nتیم‌های دانشگاه ما در مسابقه ACM ICPC منطقه‌ای عملکرد درخشانی داشتند.\n\n## نتایج تیم‌ها\n\n### تیم Alpha\n- **اعضا**: علی احمدی، سارا محمدی، رضا کریمی\n- **رتبه**: ۵ منطقه‌ای\n- **مسائل حل شده**: ۷ از ۱۲\n\n### تیم Beta\n- **اعضا**: مریم حسینی، حسن زارع، زهرا صفری\n- **رتبه**: ۱۲ منطقه‌ای\n- **مسائل حل شده**: ۵ از ۱۲\n\n### تیم Gamma\n- **اعضا**: محمد رحمانی، فاطمه مرادی، امیر قربانی\n- **رتبه**: ۱۸ منطقه‌ای\n- **مسائل حل شده**: ۴ از ۱۲\n\n## تبریک و تشکر\n\nاز تمامی شرکت‌کنندگان تشکر می‌کنیم و امیدواریم سال آینده نتایج بهتری کسب کنیم.\n\n## آماده‌سازی برای سال آینده\n\nبرای آماده‌سازی تیم‌های سال آینده، کارگاه‌های تمرینی برگزار خواهد شد.",
+      "excerpt": "گزارش عملکرد تیم‌های دانشگاه در مسابقه ACM ICPC منطقه‌ای",
+      "author": 2,
+      "status": "published",
+      "published_at": "2024-03-01T16:00:00Z",
+      "category": 10,
+      "is_featured": false,
+      "created_at": "2024-03-01T15:00:00Z",
+      "updated_at": "2024-03-01T15:00:00Z",
+      "is_deleted": false
+    }
+  },
+  {
+    "model": "blog.comment",
+    "pk": 1,
+    "fields": {
+      "post": 1,
+      "author": 3,
+      "content": "مقاله بسیار مفیدی بود. ممنون از نویسنده",
+      "is_approved": true,
+      "created_at": "2024-01-16T10:00:00Z",
+      "updated_at": "2024-01-16T10:00:00Z",
+      "is_deleted": false
+    }
+  },
+  {
+    "model": "blog.comment",
+    "pk": 2,
+    "fields": {
+      "post": 1,
+      "author": 4,
+      "content": "آیا می‌توانید مثال‌های بیشتری ارائه دهید؟",
+      "is_approved": true,
+      "created_at": "2024-01-17T11:00:00Z",
+      "updated_at": "2024-01-17T11:00:00Z",
+      "is_deleted": false
+    }
+  },
+  {
+    "model": "blog.comment",
+    "pk": 3,
+    "fields": {
+      "post": 2,
+      "author": 5,
+      "content": "Django REST Framework واقعاً قدرتمند است",
+      "is_approved": true,
+      "created_at": "2024-01-21T09:00:00Z",
+      "updated_at": "2024-01-21T09:00:00Z",
+      "is_deleted": false
+    }
+  },
+  {
+    "model": "blog.comment",
+    "pk": 4,
+    "fields": {
+      "post": 3,
+      "author": 6,
+      "content": "امنیت واقعاً مهم است. مقاله خوبی بود",
+      "is_approved": true,
+      "created_at": "2024-01-26T12:00:00Z",
+      "updated_at": "2024-01-26T12:00:00Z",
+      "is_deleted": false
+    }
+  },
+  {
+    "model": "blog.comment",
+    "pk": 5,
+    "fields": {
+      "post": 4,
+      "author": 7,
+      "content": "Pandas برای تحلیل داده عالی است",
+      "is_approved": true,
+      "created_at": "2024-02-02T14:00:00Z",
+      "updated_at": "2024-02-02T14:00:00Z",
+      "is_deleted": false
+    }
+  },
+  {
+    "model": "blog.comment",
+    "pk": 6,
+    "fields": {
+      "post": 5,
+      "author": 8,
+      "content": "React Native گزینه خوبی برای موبایل است",
+      "is_approved": true,
+      "created_at": "2024-02-06T15:00:00Z",
+      "updated_at": "2024-02-06T15:00:00Z",
+      "is_deleted": false
+    }
+  },
+  {
+    "model": "blog.comment",
+    "pk": 7,
+    "fields": {
+      "post": 6,
+      "author": 9,
+      "content": "شبکه پایه همه چیز است",
+      "is_approved": true,
+      "created_at": "2024-02-11T16:00:00Z",
+      "updated_at": "2024-02-11T16:00:00Z",
+      "is_deleted": false
+    }
+  },
+  {
+    "model": "blog.comment",
+    "pk": 8,
+    "fields": {
+      "post": 7,
+      "author": 10,
+      "content": "Unity برای شروع بازی‌سازی عالی است",
+      "is_approved": true,
+      "created_at": "2024-02-16T13:00:00Z",
+      "updated_at": "2024-02-16T13:00:00Z",
+      "is_deleted": false
+    }
+  },
+  {
+    "model": "blog.comment",
+    "pk": 9,
+    "fields": {
+      "post": 8,
+      "author": 11,
+      "content": "طراحی UI/UX خیلی مهم است",
+      "is_approved": true,
+      "created_at": "2024-02-21T17:00:00Z",
+      "updated_at": "2024-02-21T17:00:00Z",
+      "is_deleted": false
+    }
+  },
+  {
+    "model": "blog.comment",
+    "pk": 10,
+    "fields": {
+      "post": 9,
+      "author": 12,
+      "content": "حتماً در مسابقه شرکت می‌کنم",
+      "is_approved": true,
+      "created_at": "2024-02-26T11:00:00Z",
+      "updated_at": "2024-02-26T11:00:00Z",
+      "is_deleted": false
+    }
+  },
+  {
+    "model": "blog.like",
+    "pk": 1,
+    "fields": {
+      "post": 1,
+      "user": 3,
+      "created_at": "2024-01-16T10:30:00Z"
+    }
+  },
+  {
+    "model": "blog.like",
+    "pk": 2,
+    "fields": {
+      "post": 1,
+      "user": 4,
+      "created_at": "2024-01-17T11:30:00Z"
+    }
+  },
+  {
+    "model": "blog.like",
+    "pk": 3,
+    "fields": {
+      "post": 1,
+      "user": 5,
+      "created_at": "2024-01-18T12:00:00Z"
+    }
+  },
+  {
+    "model": "blog.like",
+    "pk": 4,
+    "fields": {
+      "post": 2,
+      "user": 6,
+      "created_at": "2024-01-21T09:30:00Z"
+    }
+  },
+  {
+    "model": "blog.like",
+    "pk": 5,
+    "fields": {
+      "post": 2,
+      "user": 7,
+      "created_at": "2024-01-22T10:00:00Z"
+    }
+  },
+  {
+    "model": "blog.like",
+    "pk": 6,
+    "fields": {
+      "post": 3,
+      "user": 8,
+      "created_at": "2024-01-26T12:30:00Z"
+    }
+  },
+  {
+    "model": "blog.like",
+    "pk": 7,
+    "fields": {
+      "post": 3,
+      "user": 9,
+      "created_at": "2024-01-27T13:00:00Z"
+    }
+  },
+  {
+    "model": "blog.like",
+    "pk": 8,
+    "fields": {
+      "post": 4,
+      "user": 10,
+      "created_at": "2024-02-02T14:30:00Z"
+    }
+  },
+  {
+    "model": "blog.like",
+    "pk": 9,
+    "fields": {
+      "post": 5,
+      "user": 11,
+      "created_at": "2024-02-06T15:30:00Z"
+    }
+  },
+  {
+    "model": "blog.like",
+    "pk": 10,
+    "fields": {
+      "post": 6,
+      "user": 12,
+      "created_at": "2024-02-11T16:30:00Z"
+    }
+  },
+  {
+    "model": "blog.like",
+    "pk": 11,
+    "fields": {
+      "post": 7,
+      "user": 1,
+      "created_at": "2024-02-16T13:30:00Z"
+    }
+  },
+  {
+    "model": "blog.like",
+    "pk": 12,
+    "fields": {
+      "post": 8,
+      "user": 2,
+      "created_at": "2024-02-21T17:30:00Z"
+    }
+  }
+]

backend/blog/migrations/0001_initial.py

@@ -0,0 +1,89 @@
+# Generated by Django 5.2.5 on 2025-10-16 12:07
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    initial = True
+
+    dependencies = [
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='Category',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('created_at', models.DateTimeField(auto_now_add=True)),
+                ('updated_at', models.DateTimeField(auto_now=True)),
+                ('is_deleted', models.BooleanField(default=False)),
+                ('deleted_at', models.DateTimeField(blank=True, null=True)),
+                ('name', models.CharField(max_length=100, unique=True)),
+                ('slug', models.SlugField(blank=True, max_length=100, unique=True)),
+                ('description', models.TextField(blank=True)),
+            ],
+            options={
+                'verbose_name_plural': 'Categories',
+                'ordering': ['name'],
+            },
+        ),
+        migrations.CreateModel(
+            name='Comment',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('created_at', models.DateTimeField(auto_now_add=True)),
+                ('updated_at', models.DateTimeField(auto_now=True)),
+                ('is_deleted', models.BooleanField(default=False)),
+                ('deleted_at', models.DateTimeField(blank=True, null=True)),
+                ('content', models.TextField()),
+                ('is_approved', models.BooleanField(default=True)),
+            ],
+            options={
+                'ordering': ['created_at'],
+            },
+        ),
+        migrations.CreateModel(
+            name='Like',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('created_at', models.DateTimeField(auto_now_add=True)),
+            ],
+        ),
+        migrations.CreateModel(
+            name='Post',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('created_at', models.DateTimeField(auto_now_add=True)),
+                ('updated_at', models.DateTimeField(auto_now=True)),
+                ('is_deleted', models.BooleanField(default=False)),
+                ('deleted_at', models.DateTimeField(blank=True, null=True)),
+                ('title', models.CharField(max_length=200)),
+                ('slug', models.SlugField(blank=True, max_length=200, unique=True)),
+                ('content', models.TextField(help_text='Content in Markdown format')),
+                ('excerpt', models.TextField(blank=True, max_length=300)),
+                ('featured_image', models.ImageField(blank=True, null=True, upload_to='blog/featured/')),
+                ('status', models.CharField(choices=[('draft', 'Draft'), ('published', 'Published')], default='draft', max_length=10)),
+                ('published_at', models.DateTimeField(blank=True, null=True)),
+                ('is_featured', models.BooleanField(default=False)),
+            ],
+            options={
+                'ordering': ['-created_at'],
+            },
+        ),
+        migrations.CreateModel(
+            name='Tag',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('created_at', models.DateTimeField(auto_now_add=True)),
+                ('updated_at', models.DateTimeField(auto_now=True)),
+                ('is_deleted', models.BooleanField(default=False)),
+                ('deleted_at', models.DateTimeField(blank=True, null=True)),
+                ('name', models.CharField(max_length=50, unique=True)),
+                ('slug', models.SlugField(blank=True, unique=True)),
+            ],
+            options={
+                'ordering': ['name'],
+            },
+        ),
+    ]

backend/blog/migrations/0002_initial.py

@@ -0,0 +1,78 @@
+# Generated by Django 5.2.5 on 2025-10-16 12:07
+
+import django.db.models.deletion
+from django.conf import settings
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    initial = True
+
+    dependencies = [
+        ('blog', '0001_initial'),
+        migrations.swappable_dependency(settings.AUTH_USER_MODEL),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='comment',
+            name='author',
+            field=models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='comments', to=settings.AUTH_USER_MODEL),
+        ),
+        migrations.AddField(
+            model_name='comment',
+            name='parent',
+            field=models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.CASCADE, related_name='replies', to='blog.comment'),
+        ),
+        migrations.AddField(
+            model_name='like',
+            name='user',
+            field=models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='likes', to=settings.AUTH_USER_MODEL),
+        ),
+        migrations.AddField(
+            model_name='post',
+            name='author',
+            field=models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='posts', to=settings.AUTH_USER_MODEL),
+        ),
+        migrations.AddField(
+            model_name='post',
+            name='category',
+            field=models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.SET_NULL, related_name='posts', to='blog.category'),
+        ),
+        migrations.AddField(
+            model_name='like',
+            name='post',
+            field=models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='likes', to='blog.post'),
+        ),
+        migrations.AddField(
+            model_name='comment',
+            name='post',
+            field=models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='comments', to='blog.post'),
+        ),
+        migrations.AddField(
+            model_name='post',
+            name='tags',
+            field=models.ManyToManyField(blank=True, related_name='posts', to='blog.tag'),
+        ),
+        migrations.AddIndex(
+            model_name='like',
+            index=models.Index(fields=['post'], name='blog_like_post_id_c95f0b_idx'),
+        ),
+        migrations.AlterUniqueTogether(
+            name='like',
+            unique_together={('post', 'user')},
+        ),
+        migrations.AddIndex(
+            model_name='comment',
+            index=models.Index(fields=['post', 'is_approved'], name='blog_commen_post_id_7710b1_idx'),
+        ),
+        migrations.AddIndex(
+            model_name='post',
+            index=models.Index(fields=['status', 'published_at'], name='blog_post_status_5b2843_idx'),
+        ),
+        migrations.AddIndex(
+            model_name='post',
+            index=models.Index(fields=['is_featured'], name='blog_post_is_feat_837e2e_idx'),
+        ),
+    ]

backend/blog/models.py

@@ -0,0 +1,137 @@
+from django.db import models
+from django.conf import settings
+from django.utils.text import slugify
+from django.utils import timezone
+
+import markdown
+
+from utils.models import BaseModel
+
+class Category(BaseModel):
+    name = models.CharField(max_length=100, unique=True)
+    slug = models.SlugField(max_length=100, unique=True, blank=True)
+    description = models.TextField(blank=True)
+
+    class Meta:
+        verbose_name_plural = "Categories"
+        ordering = ['name']
+
+    def __str__(self):
+        return self.name
+
+    def save(self, *args, **kwargs):
+        if not self.slug:
+            self.slug = slugify(self.name)
+        super().save(*args, **kwargs)
+
+class Tag(BaseModel):
+    name = models.CharField(max_length=50, unique=True)
+    slug = models.SlugField(max_length=50, unique=True, blank=True)
+
+    class Meta:
+        ordering = ['name']
+
+    def __str__(self):
+        return self.name
+
+    def save(self, *args, **kwargs):
+        if not self.slug:
+            self.slug = slugify(self.name)
+        super().save(*args, **kwargs)
+
+class Post(BaseModel):
+    class StatusChoices(models.TextChoices):
+        DRAFT = 'draft', 'Draft'
+        PUBLISHED = 'published', 'Published'
+
+    title = models.CharField(max_length=200)
+    slug = models.SlugField(max_length=200, unique=True, blank=True)
+    content = models.TextField(help_text="Content in Markdown format")
+    excerpt = models.TextField(max_length=300, blank=True)
+    author = models.ForeignKey(settings.AUTH_USER_MODEL, on_delete=models.CASCADE, related_name='posts')
+    featured_image = models.ImageField(upload_to='blog/featured/', null=True, blank=True)
+    status = models.CharField(max_length=10, choices=StatusChoices.choices, default=StatusChoices.DRAFT)
+    published_at = models.DateTimeField(null=True, blank=True)
+    category = models.ForeignKey(Category, on_delete=models.SET_NULL, null=True, blank=True, related_name='posts')
+    tags = models.ManyToManyField(Tag, blank=True, related_name='posts')
+    is_featured = models.BooleanField(default=False)
+
+    class Meta:
+        ordering = ['-created_at']
+        indexes = [
+            models.Index(fields=['status', 'published_at']),
+            models.Index(fields=['is_featured']),
+        ]
+
+    def __str__(self):
+        return self.title
+
+    def save(self, *args, **kwargs):
+        if not self.slug:
+            self.slug = slugify(self.title)
+        
+        # Auto-generate excerpt if not provided
+        if not self.excerpt and self.content:
+            # Convert markdown to plain text for excerpt
+            plain_text = markdown.markdown(self.content, extensions=['markdown.extensions.extra'])
+            # Remove HTML tags and truncate
+            import re
+            plain_text = re.sub('<[^<]+?>', '', plain_text)
+            self.excerpt = plain_text[:297] + '...' if len(plain_text) > 300 else plain_text
+
+        if self.status == Post.StatusChoices.PUBLISHED and not self.published_at:
+            self.published_at = timezone.now()
+
+        super().save(*args, **kwargs)
+
+    @property
+    def content_html(self):
+        """Convert markdown content to HTML"""
+        return markdown.markdown(
+            self.content,
+            extensions=[
+                'markdown.extensions.extra',
+                'markdown.extensions.codehilite',
+                'markdown.extensions.toc',
+            ]
+        )
+
+    @property
+    def reading_time(self):
+        """Estimate reading time in minutes assuming 200 words per minute."""
+        word_count = len(self.content.split())
+        return max(1, word_count // 200)
+
+class Comment(BaseModel):
+    post = models.ForeignKey(Post, on_delete=models.CASCADE, related_name='comments')
+    author = models.ForeignKey(settings.AUTH_USER_MODEL, on_delete=models.CASCADE, related_name='comments')
+    content = models.TextField()
+    parent = models.ForeignKey('self', on_delete=models.CASCADE, null=True, blank=True, related_name='replies')
+    is_approved = models.BooleanField(default=True)
+
+    class Meta:
+        ordering = ['created_at']
+        indexes = [
+            models.Index(fields=['post', 'is_approved']),
+        ]
+
+    def __str__(self):
+        return f'Comment by {self.author.username} on {self.post.title}'
+
+    @property
+    def is_reply(self):
+        return self.parent is not None
+
+class Like(models.Model):
+    post = models.ForeignKey(Post, on_delete=models.CASCADE, related_name='likes')
+    user = models.ForeignKey(settings.AUTH_USER_MODEL, on_delete=models.CASCADE, related_name='likes')
+    created_at = models.DateTimeField(auto_now_add=True)
+
+    class Meta:
+        unique_together = ['post', 'user']
+        indexes = [
+            models.Index(fields=['post']),
+        ]
+
+    def __str__(self):
+        return f'{self.user.username} likes {self.post.title}'

backend/blog/resources.py

@@ -0,0 +1,32 @@
+from import_export import resources, fields
+from import_export.widgets import ForeignKeyWidget, ManyToManyWidget
+
+from users.models import User
+from blog.models import Post, Category, Tag
+
+class CategoryResource(resources.ModelResource):
+    class Meta:
+        model = Category
+        fields = ('id', 'name', 'slug', 'description', 'created_at')
+
+class PostResource(resources.ModelResource):
+    author = fields.Field(
+        column_name='author',
+        attribute='author',
+        widget=ForeignKeyWidget(User, 'username')
+    )
+    category = fields.Field(
+        column_name='category',
+        attribute='category',
+        widget=ForeignKeyWidget(Category, 'name')
+    )
+    tags = fields.Field(
+        column_name='tags',
+        attribute='tags',
+        widget=ManyToManyWidget(Tag, field='name', separator='|')
+    )
+
+    class Meta:
+        model = Post
+        fields = ('id', 'title', 'slug', 'content', 'excerpt', 'author', 
+                 'category', 'tags', 'status', 'is_featured', 'published_at', 'created_at')

backend/certificates/__init__.py

@@ -0,0 +1 @@
+""""""

backend/certificates/admin.py

@@ -0,0 +1,24 @@
+from django.contrib import admin
+
+from .models import CertificateTemplate, Skill, UserCertificate
+
+
+@admin.register(Skill)
+class SkillAdmin(admin.ModelAdmin):
+    list_display = ('name', 'created_at')
+    search_fields = ('name',)
+
+
+@admin.register(CertificateTemplate)
+class CertificateTemplateAdmin(admin.ModelAdmin):
+    list_display = ('event', 'created_at')
+    search_fields = ('event__title',)
+    filter_horizontal = ('skills',)
+
+
+@admin.register(UserCertificate)
+class UserCertificateAdmin(admin.ModelAdmin):
+    list_display = ('user', 'event', 'title', 'score', 'issued_at')
+    list_filter = ('score', 'issued_at')
+    search_fields = ('user__username', 'title', 'event__title')
+    filter_horizontal = ('skills',)

backend/certificates/apps.py

@@ -0,0 +1,6 @@
+from django.apps import AppConfig
+
+
+class CertificatesConfig(AppConfig):
+    default_auto_field = 'django.db.models.BigAutoField'
+    name = 'certificates'

backend/certificates/migrations/0001_initial.py

@@ -0,0 +1,80 @@
+# Generated by Django 4.2.13 on 2025-11-18 09:47
+
+import certificates.models
+from django.conf import settings
+from django.db import migrations, models
+import django.db.models.deletion
+import django.utils.timezone
+import uuid
+
+
+class Migration(migrations.Migration):
+
+    initial = True
+
+    dependencies = [
+        ('events', '0012_alter_eventemaillog_kind'),
+        migrations.swappable_dependency(settings.AUTH_USER_MODEL),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='Skill',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('created_at', models.DateTimeField(auto_now_add=True)),
+                ('updated_at', models.DateTimeField(auto_now=True)),
+                ('is_deleted', models.BooleanField(default=False)),
+                ('deleted_at', models.DateTimeField(blank=True, null=True)),
+                ('name', models.CharField(max_length=120, unique=True)),
+                ('description', models.TextField(blank=True)),
+            ],
+            options={
+                'ordering': ['name'],
+            },
+        ),
+        migrations.CreateModel(
+            name='CertificateTemplate',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('created_at', models.DateTimeField(auto_now_add=True)),
+                ('updated_at', models.DateTimeField(auto_now=True)),
+                ('is_deleted', models.BooleanField(default=False)),
+                ('deleted_at', models.DateTimeField(blank=True, null=True)),
+                ('image', models.ImageField(upload_to='certificates/templates/')),
+                ('event', models.OneToOneField(on_delete=django.db.models.deletion.CASCADE, related_name='certificate_template', to='events.event')),
+                ('skills', models.ManyToManyField(blank=True, help_text='Skills covered by this event.', related_name='certificate_templates', to='certificates.skill')),
+            ],
+            options={
+                'verbose_name': 'Certificate template',
+                'verbose_name_plural': 'Certificate templates',
+            },
+        ),
+        migrations.CreateModel(
+            name='UserCertificate',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('created_at', models.DateTimeField(auto_now_add=True)),
+                ('updated_at', models.DateTimeField(auto_now=True)),
+                ('is_deleted', models.BooleanField(default=False)),
+                ('deleted_at', models.DateTimeField(blank=True, null=True)),
+                ('certificate_id', models.UUIDField(default=uuid.uuid4, editable=False, unique=True)),
+                ('code', models.CharField(default=certificates.models._generate_certificate_code, editable=False, max_length=10, unique=True)),
+                ('title', models.CharField(max_length=255)),
+                ('description', models.TextField(blank=True)),
+                ('score', models.PositiveSmallIntegerField(default=0)),
+                ('issued_at', models.DateTimeField(default=django.utils.timezone.now)),
+                ('expires_at', models.DateTimeField(blank=True, null=True)),
+                ('image', models.ImageField(blank=True, null=True, upload_to='certificates/generated/')),
+                ('event', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='user_certificates', to='events.event')),
+                ('skills', models.ManyToManyField(blank=True, help_text='Skills demonstrated on this certificate.', related_name='user_certificates', to='certificates.skill')),
+                ('template', models.ForeignKey(on_delete=django.db.models.deletion.PROTECT, related_name='awarded_certificates', to='certificates.certificatetemplate')),
+                ('user', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='certificates', to=settings.AUTH_USER_MODEL)),
+            ],
+            options={
+                'ordering': ['-issued_at'],
+                'indexes': [models.Index(fields=['user', 'event'], name='certificate_user_id_61901c_idx'), models.Index(fields=['event', 'score'], name='certificate_event_i_25b8ab_idx')],
+                'unique_together': {('user', 'event')},
+            },
+        ),
+    ]

backend/certificates/migrations/__init__.py

@@ -0,0 +1 @@
+""""""

backend/certificates/models.py

@@ -0,0 +1,316 @@
+from io import BytesIO
+from typing import Optional, Sequence
+from uuid import uuid4
+
+from django.conf import settings
+from django.core.exceptions import ValidationError
+from django.core.files.base import ContentFile
+from django.db import models
+from django.utils import timezone
+from PIL import Image, ImageDraw, ImageFont
+
+from events.models import Registration
+from users.models import User
+from utils.models import BaseModel
+
+SHORT_CERTIFICATE_CODE_LENGTH = 10
+
+
+def _generate_certificate_code() -> str:
+    return uuid4().hex[:SHORT_CERTIFICATE_CODE_LENGTH]
+
+
+class Skill(BaseModel):
+    name = models.CharField(max_length=120, unique=True)
+    description = models.TextField(blank=True)
+
+    class Meta:
+        ordering = ['name']
+
+    def __str__(self):
+        return self.name
+
+
+class CertificateTemplate(BaseModel):
+    event = models.OneToOneField(
+        'events.Event',
+        on_delete=models.CASCADE,
+        related_name='certificate_template',
+    )
+    image = models.ImageField(upload_to='certificates/templates/')
+    skills = models.ManyToManyField(
+        Skill,
+        blank=True,
+        related_name='certificate_templates',
+        help_text='Skills covered by this event.',
+    )
+
+    class Meta:
+        verbose_name = 'Certificate template'
+        verbose_name_plural = 'Certificate templates'
+
+    def __str__(self):
+        return f'{self.event.title} template'
+
+    def _validate_score(self, score: Optional[int]) -> int:
+        """Normalize score values and ensure they stay within 0-100."""
+        if score is None:
+            raise ValidationError("Score is required")
+        try:
+            normalized = int(score)
+        except (TypeError, ValueError):
+            raise ValidationError("Score must be an integer between 0 and 100")
+        if normalized < 0 or normalized > 100:
+            raise ValidationError("Score must be between 0 and 100")
+        return normalized
+
+    def _resolve_skill_ids(self, skill_ids: Optional[Sequence[int]]) -> list[int]:
+        """Return a cleaned list of skill IDs, defaulting to the template skills."""
+        if skill_ids is None:
+            return list(self.skills.values_list('id', flat=True))
+
+        normalized = []
+        seen = set()
+        for skill_id in skill_ids:
+            if skill_id is None:
+                continue
+            try:
+                skill_int = int(skill_id)
+            except (TypeError, ValueError):
+                continue
+            if skill_int not in seen:
+                seen.add(skill_int)
+                normalized.append(skill_int)
+
+        if not normalized:
+            return []
+
+        existing = set(Skill.objects.filter(id__in=normalized).values_list('id', flat=True))
+        missing = set(normalized) - existing
+        if missing:
+            raise ValidationError(f"Skills not found: {', '.join(str(mid) for mid in sorted(missing))}")
+        return normalized
+
+    def _ensure_user_registration(self, user: User) -> Registration:
+        """Require that the user has a confirmed or attended registration for the event."""
+        registration = Registration.objects.filter(
+            event=self.event,
+            user=user,
+            status__in=[
+                Registration.StatusChoices.CONFIRMED,
+                Registration.StatusChoices.ATTENDED,
+            ],
+            is_deleted=False,
+        ).order_by('-registered_at').first()
+        if not registration:
+            raise ValidationError("User must have a confirmed or attended registration for this event.")
+        return registration
+
+    def _load_font(self, size: int = 48):
+        try:
+            return ImageFont.truetype("arial.ttf", size)
+        except Exception:
+            return ImageFont.load_default()
+
+    def _render_certificate_image(self, certificate: 'UserCertificate') -> None:
+        """Overlay user-specific text on the template image and attach it to the certificate."""
+        if not self.image:
+            return
+        try:
+            template_path = self.image.path
+        except (AttributeError, ValueError):
+            return
+
+        try:
+            base_image = Image.open(template_path).convert("RGB")
+        except FileNotFoundError:
+            return
+
+        draw = ImageDraw.Draw(base_image)
+        font = self._load_font(size=48)
+        width, height = base_image.size
+        lines = [
+            certificate.user.get_full_name() or certificate.user.email,
+            self.event.title,
+            f"Score: {certificate.score} ({certificate.score_label})",
+            timezone.localtime(certificate.issued_at).strftime('%Y-%m-%d'),
+        ]
+        margin = 40
+        total_height = 0
+        measurements = []
+        for line in lines:
+            bbox = draw.textbbox((0, 0), line, font=font)
+            line_height = bbox[3] - bbox[1]
+            line_width = bbox[2] - bbox[0]
+            measurements.append((line, line_width, line_height))
+            total_height += line_height + 10
+        y = height - margin - total_height
+        for line, line_width, line_height in measurements:
+            x = (width - line_width) / 2
+            draw.text((x, y), line, fill='black', font=font)
+            y += line_height + 10
+
+        buffer = BytesIO()
+        base_image.save(buffer, format='PNG')
+        buffer.seek(0)
+        filename = f"{self.event.slug}_{certificate.user_id}_{uuid4().hex}.png"
+        certificate.image.save(filename, ContentFile(buffer.read()), save=False)
+        certificate.save(update_fields=['image'])
+
+    def award_certificate(
+        self,
+        *,
+        user: User,
+        title: str,
+        description: str = '',
+        score: Optional[int] = None,
+        skill_ids: Optional[Sequence[int]] = None,
+        issued_at=None,
+        expires_at=None,
+    ) -> 'UserCertificate':
+        """
+        Create or update the certificate for a single user.
+        """
+        self._ensure_user_registration(user)
+        resolved_score = self._validate_score(score)
+        resolved_skills = self._resolve_skill_ids(skill_ids)
+        issued_at = issued_at or timezone.now()
+        title = title or f"{self.event.title} Certificate"
+        description = description or ''
+
+        certificate, _ = UserCertificate.objects.update_or_create(
+            user=user,
+            event=self.event,
+            defaults={
+                'template': self,
+                'title': title,
+                'description': description,
+                'score': resolved_score,
+                'issued_at': issued_at,
+                'expires_at': expires_at,
+            },
+        )
+
+        certificate.skills.set(resolved_skills)
+        self._render_certificate_image(certificate)
+        return certificate
+
+    def generate_certificates(
+        self,
+        entries: Sequence[dict],
+        *,
+        default_title: Optional[str] = None,
+        default_description: Optional[str] = None,
+    ) -> list['UserCertificate']:
+        """
+        Create certificates for a batch of users.
+        Entries expect dicts with at least `user_id` and `score`.
+        """
+        if not entries:
+            raise ValidationError("Entries payload must contain at least one item.")
+
+        user_ids = {entry.get('user_id') for entry in entries if entry.get('user_id') is not None}
+        if not user_ids:
+            raise ValidationError("No valid user IDs were provided.")
+
+        users = {user.id: user for user in User.objects.filter(id__in=user_ids)}
+        missing = user_ids - users.keys()
+        if missing:
+            raise ValidationError(f"Users not found: {', '.join(str(uid) for uid in sorted(missing))}")
+
+        certificates = []
+        for entry in entries:
+            user = users.get(entry.get('user_id'))
+            if not user:
+                continue
+            certificate = self.award_certificate(
+                user=user,
+                title=entry.get('title') or default_title or f"{self.event.title} Certificate",
+                description=entry.get('description') or default_description or '',
+                score=entry.get('score'),
+                skill_ids=entry.get('skill_ids'),
+                issued_at=entry.get('issued_at'),
+                expires_at=entry.get('expires_at'),
+            )
+            certificates.append(certificate)
+        return certificates
+
+
+class UserCertificate(BaseModel):
+    SCORE_RANGES = [
+        (0, 24, 'Fair'),
+        (25, 49, 'Good'),
+        (50, 74, 'Very Good'),
+        (75, 100, 'Perfect'),
+    ]
+
+    user = models.ForeignKey(
+        settings.AUTH_USER_MODEL,
+        on_delete=models.CASCADE,
+        related_name='certificates',
+    )
+    event = models.ForeignKey(
+        'events.Event',
+        on_delete=models.CASCADE,
+        related_name='user_certificates',
+    )
+    template = models.ForeignKey(
+        CertificateTemplate,
+        on_delete=models.PROTECT,
+        related_name='awarded_certificates',
+    )
+    certificate_id = models.UUIDField(default=uuid4, unique=True, editable=False)
+    code = models.CharField(
+        max_length=SHORT_CERTIFICATE_CODE_LENGTH,
+        unique=True,
+        editable=False,
+        default=_generate_certificate_code,
+    )
+    title = models.CharField(max_length=255)
+    description = models.TextField(blank=True)
+    score = models.PositiveSmallIntegerField(default=0)
+    issued_at = models.DateTimeField(default=timezone.now)
+    expires_at = models.DateTimeField(null=True, blank=True)
+    image = models.ImageField(
+        upload_to='certificates/generated/',
+        null=True,
+        blank=True,
+    )
+    skills = models.ManyToManyField(
+        Skill,
+        blank=True,
+        related_name='user_certificates',
+        help_text='Skills demonstrated on this certificate.',
+    )
+
+    class Meta:
+        unique_together = ('user', 'event')
+        ordering = ['-issued_at']
+        indexes = [
+            models.Index(fields=['user', 'event']),
+            models.Index(fields=['event', 'score']),
+        ]
+
+    def __str__(self):
+        return f'{self.user} - {self.title} ({self.certificate_id})'
+
+    @property
+    def score_label(self) -> str:
+        for lower, upper, label in self.SCORE_RANGES:
+            if lower <= self.score <= upper:
+                return label
+        return 'Unknown'
+
+    @staticmethod
+    def _make_unique_code() -> str:
+        """Generate a short certificate code without collisions."""
+        for _ in range(5):
+            candidate = _generate_certificate_code()
+            if not UserCertificate.objects.filter(code=candidate).exists():
+                return candidate
+        raise RuntimeError("Unable to generate a unique certificate code.")
+
+    def save(self, *args, **kwargs):
+        if not self.code or UserCertificate.objects.filter(code=self.code).exclude(pk=self.pk).exists():
+            self.code = self._make_unique_code()
+        super().save(*args, **kwargs)

backend/communications/admin.py

@@ -0,0 +1,122 @@
+from django import forms
+from django.contrib import admin
+from django.utils import timezone
+
+from simplemde.widgets import SimpleMDEEditor
+from import_export.admin import ImportExportModelAdmin
+
+from utils.admin import SoftDeleteListFilter, BaseModelAdmin
+from communications.models import Announcement, NewsletterSubscription, PushNotificationDevice
+
+
+class AnnouncementAdminForm(forms.ModelForm):
+    content = forms.CharField(
+        widget=SimpleMDEEditor(),
+        help_text="Announcement content in Markdown format with live preview"
+    )
+
+    class Meta:
+        model = Announcement
+        fields = '__all__'
+
+
+@admin.register(Announcement)
+class AnnouncementAdmin(BaseModelAdmin, ImportExportModelAdmin):
+    form = AnnouncementAdminForm
+    list_display = [
+        'title', 'announcement_type', 'priority', 'author', 
+        'is_published', 'publish_date', 'email_sent', 'push_sent', 'created_at'
+    ]
+    list_filter = [
+        'announcement_type', 'priority', 'is_published', 
+        'send_email', 'send_push', 'target_audience',
+        SoftDeleteListFilter, 'created_at'
+    ]
+    search_fields = ['title', 'content', 'author__username']
+    readonly_fields = ['email_sent', 'push_sent', 'created_at', 'updated_at']
+    
+    fieldsets = (
+        ('Content', {
+            'fields': ('title', 'content', 'author')
+        }),
+        ('Settings', {
+            'fields': ('announcement_type', 'priority', 'target_audience', 'is_published', 'publish_date')
+        }),
+        ('Notifications', {
+            'fields': ('send_email', 'send_push', 'email_sent', 'push_sent')
+        }),
+        ('Timestamps', {
+            'fields': ('created_at', 'updated_at'),
+            'classes': ('collapse',)
+        }),
+    )
+
+    actions = BaseModelAdmin.actions + ['publish_announcements', 'send_notifications']
+
+    def publish_announcements(self, request, queryset):
+        queryset.update(is_published=True, publish_date=timezone.now())
+        self.message_user(request, f"{queryset.count()} announcements published.")
+    publish_announcements.short_description = "Publish selected announcements"
+
+    def send_notifications(self, request, queryset):
+        # This will be implemented with Celery tasks
+        for announcement in queryset:
+            if announcement.send_email and not announcement.email_sent:
+                # Trigger email task
+                pass
+            if announcement.send_push and not announcement.push_sent:
+                # Trigger push notification task
+                pass
+        self.message_user(request, f"Notifications queued for {queryset.count()} announcements.")
+    send_notifications.short_description = "Send notifications for selected announcements"
+
+
+@admin.register(NewsletterSubscription)
+class NewsletterSubscriptionAdmin(BaseModelAdmin, ImportExportModelAdmin):
+    list_display = ['email', 'user', 'is_active', 'confirmed_at', 'created_at']
+    list_filter = ['is_active', SoftDeleteListFilter, 'created_at', 'confirmed_at']
+    search_fields = ['email', 'user__username', 'user__email']
+    readonly_fields = ['confirmation_token', 'unsubscribe_token', 'created_at', 'updated_at']
+    
+    fieldsets = (
+        ('Subscription', {
+            'fields': ('email', 'user', 'is_active', 'subscribed_categories')
+        }),
+        ('Confirmation', {
+            'fields': ('confirmed_at', 'confirmation_token', 'unsubscribe_token')
+        }),
+        ('Timestamps', {
+            'fields': ('created_at', 'updated_at'),
+            'classes': ('collapse',)
+        }),
+    )
+
+    actions = BaseModelAdmin.actions + ['activate_subscriptions', 'deactivate_subscriptions']
+
+    def activate_subscriptions(self, request, queryset):
+        queryset.update(is_active=True)
+        self.message_user(request, f"{queryset.count()} subscriptions activated.")
+    activate_subscriptions.short_description = "Activate selected subscriptions"
+
+    def deactivate_subscriptions(self, request, queryset):
+        queryset.update(is_active=False)
+        self.message_user(request, f"{queryset.count()} subscriptions deactivated.")
+    deactivate_subscriptions.short_description = "Deactivate selected subscriptions"
+
+
+@admin.register(PushNotificationDevice)
+class PushNotificationDeviceAdmin(BaseModelAdmin, ImportExportModelAdmin):
+    list_display = ['user', 'device_type', 'is_active', 'created_at']
+    list_filter = ['device_type', 'is_active', SoftDeleteListFilter, 'created_at']
+    search_fields = ['user__username', 'user__email', 'device_token']
+    readonly_fields = ['created_at', 'updated_at']
+    
+    fieldsets = (
+        ('Device', {
+            'fields': ('user', 'device_token', 'device_type', 'is_active')
+        }),
+        ('Timestamps', {
+            'fields': ('created_at', 'updated_at'),
+            'classes': ('collapse',)
+        }),
+    )

backend/communications/apps.py

@@ -0,0 +1,7 @@
+from django.apps import AppConfig
+
+
+class CommunicationsConfig(AppConfig):
+    default_auto_field = 'django.db.models.BigAutoField'
+    name = 'communications'
+    verbose_name = 'Communications'

backend/communications/fixtures/communications.json

@@ -0,0 +1,536 @@
+[
+  {
+    "model": "communications.announcement",
+    "pk": 1,
+    "fields": {
+      "created_at": "2024-03-01T10:00:00Z",
+      "updated_at": "2024-03-01T10:00:00Z",
+      "is_deleted": false,
+      "title": "شروع ثبت‌نام کارگاه یادگیری ماشین",
+      "content": "# شروع ثبت‌نام کارگاه یادگیری ماشین\n\nبا سلام و احترام\n\nثبت‌نام کارگاه یادگیری ماشین پیشرفته از امروز آغاز شد.\n\n## جزئیات:\n- تاریخ: ۱۵ اسفند ۱۴۰۲\n- مدت: ۴ ساعت\n- هزینه: ۱۵۰ هزار تومان\n- ظرفیت: ۵۰ نفر\n\nبرای ثبت‌نام به وب‌سایت انجمن مراجعه کنید.",
+      "announcement_type": "event",
+      "priority": "high",
+      "author": 1,
+      "is_published": true,
+      "publish_date": "2024-03-01T10:00:00Z",
+      "send_email": true,
+      "send_push": true,
+      "email_sent": true,
+      "push_sent": true,
+      "target_audience": "all"
+    }
+  },
+  {
+    "model": "communications.announcement",
+    "pk": 2,
+    "fields": {
+      "created_at": "2024-03-10T14:30:00Z",
+      "updated_at": "2024-03-10T14:30:00Z",
+      "is_deleted": false,
+      "title": "تغییر زمان مسابقه برنامه‌نویسی",
+      "content": "# تغییر زمان مسابقه برنامه‌نویسی\n\nبه اطلاع شرکت‌کنندگان محترم می‌رساند که زمان مسابقه برنامه‌نویسی بهاری به دلیل تعطیلات از ۲۲ اسفند به ۲۹ اسفند تغییر یافت.\n\nعذرخواهی بابت این تغییر و لطفاً برنامه‌ریزی خود را بر این اساس انجام دهید.",
+      "announcement_type": "urgent",
+      "priority": "urgent",
+      "author": 2,
+      "is_published": true,
+      "publish_date": "2024-03-10T14:30:00Z",
+      "send_email": true,
+      "send_push": true,
+      "email_sent": true,
+      "push_sent": true,
+      "target_audience": "all"
+    }
+  },
+  {
+    "model": "communications.announcement",
+    "pk": 3,
+    "fields": {
+      "created_at": "2024-03-15T09:00:00Z",
+      "updated_at": "2024-03-15T09:00:00Z",
+      "is_deleted": false,
+      "title": "وبینار امنیت سایبری - رایگان",
+      "content": "# وبینار امنیت سایبری\n\nانجمن علمی مهندسی کامپیوتر برگزار می‌کند:\n\n**وبینار امنیت سایبری**\n\n- تاریخ: ۷ فروردین ۱۴۰۳\n- ساعت: ۱۹:۰۰ الی ۲۱:۰۰\n- مدرس: دکتر محمد رضایی\n- شرکت: رایگان\n\nلینک ورود یک ساعت قبل از شروع ارسال خواهد شد.",
+      "announcement_type": "event",
+      "priority": "normal",
+      "author": 5,
+      "is_published": true,
+      "publish_date": "2024-03-15T09:00:00Z",
+      "send_email": true,
+      "send_push": false,
+      "email_sent": true,
+      "push_sent": false,
+      "target_audience": "members"
+    }
+  },
+  {
+    "model": "communications.announcement",
+    "pk": 4,
+    "fields": {
+      "created_at": "2024-03-20T11:15:00Z",
+      "updated_at": "2024-03-20T11:15:00Z",
+      "is_deleted": false,
+      "title": "فراخوان مقاله برای نشریه انجمن",
+      "content": "# فراخوان مقاله برای نشریه انجمن\n\nدانشجویان و اساتید محترم می‌توانند مقالات خود را در زمینه‌های زیر برای چاپ در نشریه انجمن ارسال کنند:\n\n## موضوعات:\n- هوش مصنوعی\n- امنیت سایبری\n- مهندسی نرم‌افزار\n- شبکه‌های کامپیوتری\n- علم داده\n\n## مهلت ارسال:\n۳۰ فروردین ۱۴۰۳\n\nایمیل ارسال: journal@cs-association.ac.ir",
+      "announcement_type": "academic",
+      "priority": "normal",
+      "author": 1,
+      "is_published": true,
+      "publish_date": "2024-03-20T11:15:00Z",
+      "send_email": true,
+      "send_push": false,
+      "email_sent": true,
+      "push_sent": false,
+      "target_audience": "all"
+    }
+  },
+  {
+    "model": "communications.announcement",
+    "pk": 5,
+    "fields": {
+      "created_at": "2024-04-01T08:00:00Z",
+      "updated_at": "2024-04-01T08:00:00Z",
+      "is_deleted": false,
+      "title": "هکاتون هوش مصنوعی - ثبت‌نام آغاز شد",
+      "content": "# هکاتون هوش مصنوعی\n\nبزرگ‌ترین رویداد سال انجمن!\n\n## جزئیات:\n- تاریخ: ۳۰ فروردین تا ۲ اردیبهشت\n- مدت: ۴۸ ساعت\n- جایزه کل: ۲۰ میلیون تومان\n- ظرفیت: ۶۰ نفر (۲۰ تیم)\n\n## امکانات:\n- غذا و نوشیدنی رایگان\n- منتورینگ اساتید\n- فضای کار ۲۴ ساعته\n\nثبت‌نام تیمی (۳ نفره) الزامی است.",
+      "announcement_type": "event",
+      "priority": "high",
+      "author": 9,
+      "is_published": true,
+      "publish_date": "2024-04-01T08:00:00Z",
+      "send_email": true,
+      "send_push": true,
+      "email_sent": true,
+      "push_sent": true,
+      "target_audience": "all"
+    }
+  },
+  {
+    "model": "communications.announcement",
+    "pk": 6,
+    "fields": {
+      "created_at": "2024-04-05T16:00:00Z",
+      "updated_at": "2024-04-05T16:00:00Z",
+      "is_deleted": false,
+      "title": "جلسه کمیته اجرایی انجمن",
+      "content": "# جلسه کمیته اجرایی انجمن\n\nاعضای محترم کمیته اجرایی\n\nجلسه ماهانه کمیته اجرایی:\n\n- تاریخ: ۱۰ اردیبهشت ۱۴۰۳\n- ساعت: ۱۴:۰۰\n- مکان: دفتر انجمن\n\n## دستور جلسه:\n1. بررسی گزارش مالی\n2. برنامه‌ریزی رویدادهای آتی\n3. بررسی درخواست‌های عضویت\n4. سایر موارد\n\nحضور همه اعضا الزامی است.",
+      "announcement_type": "general",
+      "priority": "normal",
+      "author": 1,
+      "is_published": true,
+      "publish_date": "2024-04-05T16:00:00Z",
+      "send_email": true,
+      "send_push": false,
+      "email_sent": true,
+      "push_sent": false,
+      "target_audience": "committee"
+    }
+  },
+  {
+    "model": "communications.announcement",
+    "pk": 7,
+    "fields": {
+      "created_at": "2024-04-15T12:30:00Z",
+      "updated_at": "2024-04-15T12:30:00Z",
+      "is_deleted": false,
+      "title": "سمینار کارآفرینی فناوری",
+      "content": "# سمینار کارآفرینی فناوری\n\nبا حضور کارآفرینان موفق صنعت فناوری\n\n## سخنرانان:\n- دکتر علی احمدی (موسس تپسی)\n- خانم سارا محمدی (مدیرعامل کافه‌بازار)\n- مهندس رضا کریمی (سرمایه‌گذار)\n\n## موضوعات:\n- از ایده تا محصول\n- جذب سرمایه\n- چالش‌های استارتاپی\n- آینده فناوری در ایران\n\nشرکت رایگان - ظرفیت محدود",
+      "announcement_type": "event",
+      "priority": "high",
+      "author": 2,
+      "is_published": true,
+      "publish_date": "2024-04-15T12:30:00Z",
+      "send_email": true,
+      "send_push": true,
+      "email_sent": true,
+      "push_sent": true,
+      "target_audience": "all"
+    }
+  },
+  {
+    "model": "communications.announcement",
+    "pk": 8,
+    "fields": {
+      "created_at": "2024-04-20T10:45:00Z",
+      "updated_at": "2024-04-20T10:45:00Z",
+      "is_deleted": false,
+      "title": "کارگاه DevOps - ثبت‌نام محدود",
+      "content": "# کارگاه DevOps و Docker\n\nآموزش عملی ابزارهای DevOps\n\n## محتوا:\n- Docker و Containerization\n- CI/CD Pipeline\n- Kubernetes مقدماتی\n- پروژه عملی\n\n## جزئیات:\n- تاریخ: ۱۴ اردیبهشت\n- مدت: ۸ ساعت\n- هزینه: ۳۰۰ هزار تومان\n- ظرفیت: ۲۵ نفر\n\n⚠️ ظرفیت بسیار محدود - عجله کنید!",
+      "announcement_type": "event",
+      "priority": "high",
+      "author": 8,
+      "is_published": true,
+      "publish_date": "2024-04-20T10:45:00Z",
+      "send_email": true,
+      "send_push": true,
+      "email_sent": true,
+      "push_sent": true,
+      "target_audience": "members"
+    }
+  },
+  {
+    "model": "communications.announcement",
+    "pk": 9,
+    "fields": {
+      "created_at": "2024-04-25T13:20:00Z",
+      "updated_at": "2024-04-25T13:20:00Z",
+      "is_deleted": false,
+      "title": "مسابقه طراحی UI/UX - جوایز جذاب",
+      "content": "# مسابقه طراحی UI/UX\n\nفرصتی برای نمایش خلاقیت شما!\n\n## موضوع:\nطراحی اپلیکیشن مدیریت تسک دانشجویی\n\n## جوایز:\n- نفر اول: iPad Air\n- نفر دوم: AirPods Pro\n- نفر سوم: پاوربانک ۲۰۰۰۰ میلی‌آمپر\n\n## مهلت ارسال:\n۲۰ اردیبهشت ۱۴۰۳\n\nفایل‌های Figma یا Adobe XD قابل قبول هستند.",
+      "announcement_type": "event",
+      "priority": "normal",
+      "author": 12,
+      "is_published": true,
+      "publish_date": "2024-04-25T13:20:00Z",
+      "send_email": true,
+      "send_push": false,
+      "email_sent": true,
+      "push_sent": false,
+      "target_audience": "all"
+    }
+  },
+  {
+    "model": "communications.announcement",
+    "pk": 10,
+    "fields": {
+      "created_at": "2024-05-01T15:00:00Z",
+      "updated_at": "2024-05-01T15:00:00Z",
+      "is_deleted": false,
+      "title": "نشست فارغ‌التحصیلان - دعوت ویژه",
+      "content": "# نشست فارغ‌التحصیلان\n\nدیدار با فارغ‌التحصیلان موفق\n\n## مهمانان ویژه:\n- دکتر حسن زارع (مدیر فنی گوگل)\n- مهندس مریم حسینی (بنیان‌گذار استارتاپ)\n- دکتر امیر قربانی (استاد MIT)\n\n## برنامه:\n- ۱۷:۰۰ - پذیرایی\n- ۱۸:۰۰ - سخنرانی‌ها\n- ۱۹:۳۰ - پرسش و پاسخ\n- ۲۰:۳۰ - ضیافت شام\n\nشرکت رایگان - ثبت‌نام الزامی",
+      "announcement_type": "event",
+      "priority": "normal",
+      "author": 5,
+      "is_published": true,
+      "publish_date": "2024-05-01T15:00:00Z",
+      "send_email": true,
+      "send_push": false,
+      "email_sent": true,
+      "push_sent": false,
+      "target_audience": "all"
+    }
+  },
+  {
+    "model": "communications.newslettersubscription",
+    "pk": 1,
+    "fields": {
+      "created_at": "2024-01-15T10:30:00Z",
+      "updated_at": "2024-01-15T10:30:00Z",
+      "is_deleted": false,
+      "email": "sara.mohammadi@student.ac.ir",
+      "user": 2,
+      "is_active": true,
+      "subscribed_categories": ["event", "academic", "general"],
+      "confirmed_at": "2024-01-15T10:30:00Z"
+    }
+  },
+  {
+    "model": "communications.newslettersubscription",
+    "pk": 2,
+    "fields": {
+      "created_at": "2024-01-20T14:15:00Z",
+      "updated_at": "2024-01-20T14:15:00Z",
+      "is_deleted": false,
+      "email": "reza.karimi@student.ac.ir",
+      "user": 3,
+      "is_active": true,
+      "subscribed_categories": ["event", "urgent"],
+      "confirmed_at": "2024-01-20T14:15:00Z"
+    }
+  },
+  {
+    "model": "communications.newslettersubscription",
+    "pk": 3,
+    "fields": {
+      "created_at": "2024-02-01T09:45:00Z",
+      "updated_at": "2024-02-01T09:45:00Z",
+      "is_deleted": false,
+      "email": "maryam.hosseini@student.ac.ir",
+      "user": 4,
+      "is_active": true,
+      "subscribed_categories": ["event", "academic"],
+      "confirmed_at": "2024-02-01T09:45:00Z"
+    }
+  },
+  {
+    "model": "communications.newslettersubscription",
+    "pk": 4,
+    "fields": {
+      "created_at": "2024-02-05T16:20:00Z",
+      "updated_at": "2024-02-05T16:20:00Z",
+      "is_deleted": false,
+      "email": "hassan.zare@student.ac.ir",
+      "user": 5,
+      "is_active": true,
+      "subscribed_categories": ["general", "event", "academic", "urgent"],
+      "confirmed_at": "2024-02-05T16:20:00Z"
+    }
+  },
+  {
+    "model": "communications.newslettersubscription",
+    "pk": 5,
+    "fields": {
+      "created_at": "2024-02-10T11:30:00Z",
+      "updated_at": "2024-02-10T11:30:00Z",
+      "is_deleted": false,
+      "email": "zahra.safari@student.ac.ir",
+      "user": 6,
+      "is_active": true,
+      "subscribed_categories": ["event", "academic"],
+      "confirmed_at": "2024-02-10T11:30:00Z"
+    }
+  },
+  {
+    "model": "communications.newslettersubscription",
+    "pk": 6,
+    "fields": {
+      "created_at": "2024-02-15T13:45:00Z",
+      "updated_at": "2024-02-15T13:45:00Z",
+      "is_deleted": false,
+      "email": "fateme.moradi@student.ac.ir",
+      "user": 8,
+      "is_active": true,
+      "subscribed_categories": ["event"],
+      "confirmed_at": "2024-02-15T13:45:00Z"
+    }
+  },
+  {
+    "model": "communications.newslettersubscription",
+    "pk": 7,
+    "fields": {
+      "created_at": "2024-02-20T08:15:00Z",
+      "updated_at": "2024-02-20T08:15:00Z",
+      "is_deleted": false,
+      "email": "amir.ghorbani@student.ac.ir",
+      "user": 9,
+      "is_active": true,
+      "subscribed_categories": ["general", "event", "academic"],
+      "confirmed_at": "2024-02-20T08:15:00Z"
+    }
+  },
+  {
+    "model": "communications.newslettersubscription",
+    "pk": 8,
+    "fields": {
+      "created_at": "2024-02-25T15:30:00Z",
+      "updated_at": "2024-02-25T15:30:00Z",
+      "is_deleted": false,
+      "email": "nasrin.jafari@student.ac.ir",
+      "user": 10,
+      "is_active": true,
+      "subscribed_categories": ["academic", "event"],
+      "confirmed_at": "2024-02-25T15:30:00Z"
+    }
+  },
+  {
+    "model": "communications.newslettersubscription",
+    "pk": 9,
+    "fields": {
+      "created_at": "2024-03-01T12:00:00Z",
+      "updated_at": "2024-03-01T12:00:00Z",
+      "is_deleted": false,
+      "email": "mehdi.bagheri@student.ac.ir",
+      "user": 11,
+      "is_active": true,
+      "subscribed_categories": ["event"],
+      "confirmed_at": "2024-03-01T12:00:00Z"
+    }
+  },
+  {
+    "model": "communications.newslettersubscription",
+    "pk": 10,
+    "fields": {
+      "created_at": "2024-03-05T14:45:00Z",
+      "updated_at": "2024-03-05T14:45:00Z",
+      "is_deleted": false,
+      "email": "leila.mousavi@student.ac.ir",
+      "user": 12,
+      "is_active": true,
+      "subscribed_categories": ["event", "academic"],
+      "confirmed_at": "2024-03-05T14:45:00Z"
+    }
+  },
+  {
+    "model": "communications.newslettersubscription",
+    "pk": 11,
+    "fields": {
+      "created_at": "2024-03-10T10:20:00Z",
+      "updated_at": "2024-03-10T10:20:00Z",
+      "is_deleted": false,
+      "email": "external.user1@gmail.com",
+      "user": null,
+      "is_active": true,
+      "subscribed_categories": ["event"],
+      "confirmed_at": "2024-03-10T10:20:00Z"
+    }
+  },
+  {
+    "model": "communications.newslettersubscription",
+    "pk": 12,
+    "fields": {
+      "created_at": "2024-03-15T16:30:00Z",
+      "updated_at": "2024-03-15T16:30:00Z",
+      "is_deleted": false,
+      "email": "external.user2@yahoo.com",
+      "user": null,
+      "is_active": false,
+      "subscribed_categories": ["general"],
+      "confirmed_at": null
+    }
+  },
+  {
+    "model": "communications.pushnotificationdevice",
+    "pk": 1,
+    "fields": {
+      "created_at": "2024-01-10T08:00:00Z",
+      "updated_at": "2024-01-10T08:00:00Z",
+      "is_deleted": false,
+      "user": 1,
+      "device_token": "web_push_token_admin_chrome",
+      "device_type": "web",
+      "is_active": true
+    }
+  },
+  {
+    "model": "communications.pushnotificationdevice",
+    "pk": 2,
+    "fields": {
+      "created_at": "2024-01-15T12:30:00Z",
+      "updated_at": "2024-01-15T12:30:00Z",
+      "is_deleted": false,
+      "user": 2,
+      "device_token": "web_push_token_sara_firefox",
+      "device_type": "web",
+      "is_active": true
+    }
+  },
+  {
+    "model": "communications.pushnotificationdevice",
+    "pk": 3,
+    "fields": {
+      "created_at": "2024-01-20T16:45:00Z",
+      "updated_at": "2024-01-20T16:45:00Z",
+      "is_deleted": false,
+      "user": 3,
+      "device_token": "web_push_token_reza_chrome",
+      "device_type": "web",
+      "is_active": true
+    }
+  },
+  {
+    "model": "communications.pushnotificationdevice",
+    "pk": 4,
+    "fields": {
+      "created_at": "2024-02-01T11:20:00Z",
+      "updated_at": "2024-02-01T11:20:00Z",
+      "is_deleted": false,
+      "user": 4,
+      "device_token": "android_token_maryam_phone",
+      "device_type": "android",
+      "is_active": true
+    }
+  },
+  {
+    "model": "communications.pushnotificationdevice",
+    "pk": 5,
+    "fields": {
+      "created_at": "2024-02-05T18:10:00Z",
+      "updated_at": "2024-02-05T18:10:00Z",
+      "is_deleted": false,
+      "user": 5,
+      "device_token": "web_push_token_hassan_edge",
+      "device_type": "web",
+      "is_active": true
+    }
+  },
+  {
+    "model": "communications.pushnotificationdevice",
+    "pk": 6,
+    "fields": {
+      "created_at": "2024-02-10T13:25:00Z",
+      "updated_at": "2024-02-10T13:25:00Z",
+      "is_deleted": false,
+      "user": 6,
+      "device_token": "ios_token_zahra_iphone",
+      "device_type": "ios",
+      "is_active": true
+    }
+  },
+  {
+    "model": "communications.pushnotificationdevice",
+    "pk": 7,
+    "fields": {
+      "created_at": "2024-02-15T15:40:00Z",
+      "updated_at": "2024-02-15T15:40:00Z",
+      "is_deleted": false,
+      "user": 8,
+      "device_token": "web_push_token_fateme_chrome",
+      "device_type": "web",
+      "is_active": true
+    }
+  },
+  {
+    "model": "communications.pushnotificationdevice",
+    "pk": 8,
+    "fields": {
+      "created_at": "2024-02-20T10:15:00Z",
+      "updated_at": "2024-02-20T10:15:00Z",
+      "is_deleted": false,
+      "user": 9,
+      "device_token": "web_push_token_amir_firefox",
+      "device_type": "web",
+      "is_active": true
+    }
+  },
+  {
+    "model": "communications.pushnotificationdevice",
+    "pk": 9,
+    "fields": {
+      "created_at": "2024-02-25T17:30:00Z",
+      "updated_at": "2024-02-25T17:30:00Z",
+      "is_deleted": false,
+      "user": 10,
+      "device_token": "android_token_nasrin_phone",
+      "device_type": "android",
+      "is_active": true
+    }
+  },
+  {
+    "model": "communications.pushnotificationdevice",
+    "pk": 10,
+    "fields": {
+      "created_at": "2024-03-01T14:00:00Z",
+      "updated_at": "2024-03-01T14:00:00Z",
+      "is_deleted": false,
+      "user": 11,
+      "device_token": "web_push_token_mehdi_chrome",
+      "device_type": "web",
+      "is_active": true
+    }
+  },
+  {
+    "model": "communications.pushnotificationdevice",
+    "pk": 11,
+    "fields": {
+      "created_at": "2024-03-05T16:50:00Z",
+      "updated_at": "2024-03-05T16:50:00Z",
+      "is_deleted": false,
+      "user": 12,
+      "device_token": "ios_token_leila_iphone",
+      "device_type": "ios",
+      "is_active": true
+    }
+  },
+  {
+    "model": "communications.pushnotificationdevice",
+    "pk": 12,
+    "fields": {
+      "created_at": "2024-01-10T08:00:00Z",
+      "updated_at": "2024-03-10T12:00:00Z",
+      "is_deleted": false,
+      "user": 1,
+      "device_token": "android_token_admin_phone",
+      "device_type": "android",
+      "is_active": false
+    }
+  }
+]

backend/communications/migrations/0001_initial.py

@@ -0,0 +1,78 @@
+# Generated by Django 5.2.5 on 2025-10-16 12:07
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    initial = True
+
+    dependencies = [
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='Announcement',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('created_at', models.DateTimeField(auto_now_add=True)),
+                ('updated_at', models.DateTimeField(auto_now=True)),
+                ('is_deleted', models.BooleanField(default=False)),
+                ('deleted_at', models.DateTimeField(blank=True, null=True)),
+                ('title', models.CharField(max_length=200, verbose_name='Title')),
+                ('content', models.TextField(verbose_name='Content')),
+                ('announcement_type', models.CharField(choices=[('general', 'General'), ('event', 'Event'), ('academic', 'Academic'), ('urgent', 'Urgent'), ('newsletter', 'Newsletter')], default='general', max_length=20, verbose_name='Type')),
+                ('priority', models.CharField(choices=[('low', 'Low'), ('normal', 'Normal'), ('high', 'High'), ('urgent', 'Urgent')], default='normal', max_length=10, verbose_name='Priority')),
+                ('is_published', models.BooleanField(default=False, verbose_name='Published')),
+                ('publish_date', models.DateTimeField(blank=True, null=True, verbose_name='Publish Date')),
+                ('send_email', models.BooleanField(default=False, verbose_name='Send Email Notification')),
+                ('send_push', models.BooleanField(default=False, verbose_name='Send Push Notification')),
+                ('email_sent', models.BooleanField(default=False, verbose_name='Email Sent')),
+                ('push_sent', models.BooleanField(default=False, verbose_name='Push Sent')),
+                ('target_audience', models.CharField(choices=[('all', 'All Users'), ('members', 'Members Only'), ('committee', 'Committee Only'), ('subscribers', 'Newsletter Subscribers Only')], default='all', max_length=20, verbose_name='Target Audience')),
+            ],
+            options={
+                'verbose_name': 'Announcement',
+                'verbose_name_plural': 'Announcements',
+                'ordering': ['-created_at'],
+            },
+        ),
+        migrations.CreateModel(
+            name='NewsletterSubscription',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('created_at', models.DateTimeField(auto_now_add=True)),
+                ('updated_at', models.DateTimeField(auto_now=True)),
+                ('is_deleted', models.BooleanField(default=False)),
+                ('deleted_at', models.DateTimeField(blank=True, null=True)),
+                ('email', models.EmailField(max_length=254, unique=True, verbose_name='Email')),
+                ('is_active', models.BooleanField(default=True, verbose_name='Active')),
+                ('subscribed_categories', models.JSONField(blank=True, default=list, help_text='List of announcement types to receive', verbose_name='Subscribed Categories')),
+                ('confirmation_token', models.CharField(blank=True, max_length=100, verbose_name='Confirmation Token')),
+                ('confirmed_at', models.DateTimeField(blank=True, null=True, verbose_name='Confirmed At')),
+                ('unsubscribe_token', models.CharField(blank=True, max_length=100, verbose_name='Unsubscribe Token')),
+            ],
+            options={
+                'verbose_name': 'Newsletter Subscription',
+                'verbose_name_plural': 'Newsletter Subscriptions',
+                'ordering': ['-created_at'],
+            },
+        ),
+        migrations.CreateModel(
+            name='PushNotificationDevice',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('created_at', models.DateTimeField(auto_now_add=True)),
+                ('updated_at', models.DateTimeField(auto_now=True)),
+                ('is_deleted', models.BooleanField(default=False)),
+                ('deleted_at', models.DateTimeField(blank=True, null=True)),
+                ('device_token', models.TextField(verbose_name='Device Token')),
+                ('device_type', models.CharField(choices=[('web', 'Web'), ('android', 'Android'), ('ios', 'iOS')], max_length=10, verbose_name='Device Type')),
+                ('is_active', models.BooleanField(default=True, verbose_name='Active')),
+            ],
+            options={
+                'verbose_name': 'Push Notification Device',
+                'verbose_name_plural': 'Push Notification Devices',
+            },
+        ),
+    ]

backend/communications/migrations/0002_initial.py

@@ -0,0 +1,37 @@
+# Generated by Django 5.2.5 on 2025-10-16 12:07
+
+import django.db.models.deletion
+from django.conf import settings
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    initial = True
+
+    dependencies = [
+        ('communications', '0001_initial'),
+        migrations.swappable_dependency(settings.AUTH_USER_MODEL),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='announcement',
+            name='author',
+            field=models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='announcements', to=settings.AUTH_USER_MODEL, verbose_name='Author'),
+        ),
+        migrations.AddField(
+            model_name='newslettersubscription',
+            name='user',
+            field=models.OneToOneField(blank=True, null=True, on_delete=django.db.models.deletion.CASCADE, related_name='newsletter_subscription', to=settings.AUTH_USER_MODEL, verbose_name='User'),
+        ),
+        migrations.AddField(
+            model_name='pushnotificationdevice',
+            name='user',
+            field=models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='push_devices', to=settings.AUTH_USER_MODEL, verbose_name='User'),
+        ),
+        migrations.AlterUniqueTogether(
+            name='pushnotificationdevice',
+            unique_together={('user', 'device_token')},
+        ),
+    ]

backend/communications/models.py

@@ -0,0 +1,142 @@
+from django.db import models
+from django.contrib.auth import get_user_model
+
+from utils.models import BaseModel
+
+User = get_user_model()
+
+
+class AnnouncementType(models.TextChoices):
+    GENERAL = 'general', 'General'
+    EVENT = 'event', 'Event'
+    ACADEMIC = 'academic', 'Academic'
+    URGENT = 'urgent', 'Urgent'
+    NEWSLETTER = 'newsletter', 'Newsletter'
+
+
+class AnnouncementPriority(models.TextChoices):
+    LOW = 'low', 'Low'
+    NORMAL = 'normal', 'Normal'
+    HIGH = 'high', 'High'
+    URGENT = 'urgent', 'Urgent'
+
+
+class Announcement(BaseModel):
+    title = models.CharField(max_length=200, verbose_name='Title')
+    content = models.TextField(verbose_name='Content')
+    announcement_type = models.CharField(
+        max_length=20,
+        choices=AnnouncementType.choices,
+        default=AnnouncementType.GENERAL,
+        verbose_name='Type'
+    )
+    priority = models.CharField(
+        max_length=10,
+        choices=AnnouncementPriority.choices,
+        default=AnnouncementPriority.NORMAL,
+        verbose_name='Priority'
+    )
+    author = models.ForeignKey(
+        User,
+        on_delete=models.CASCADE,
+        related_name='announcements',
+        verbose_name='Author'
+    )
+    is_published = models.BooleanField(default=False, verbose_name='Published')
+    publish_date = models.DateTimeField(null=True, blank=True, verbose_name='Publish Date')
+    send_email = models.BooleanField(default=False, verbose_name='Send Email Notification')
+    send_push = models.BooleanField(default=False, verbose_name='Send Push Notification')
+    email_sent = models.BooleanField(default=False, verbose_name='Email Sent')
+    push_sent = models.BooleanField(default=False, verbose_name='Push Sent')
+    target_audience = models.CharField(
+        max_length=20,
+        choices=[
+            ('all', 'All Users'),
+            ('members', 'Members Only'),
+            ('committee', 'Committee Only'),
+            ('subscribers', 'Newsletter Subscribers Only'),
+        ],
+        default='all',
+        verbose_name='Target Audience'
+    )
+
+    class Meta:
+        verbose_name = 'Announcement'
+        verbose_name_plural = 'Announcements'
+        ordering = ['-created_at']
+
+    def __str__(self):
+        return self.title
+
+    @property
+    def content_html(self):
+        """Convert markdown content to HTML"""
+        import markdown
+        return markdown.markdown(self.content)
+
+
+class NewsletterSubscription(BaseModel):
+    email = models.EmailField(unique=True, verbose_name='Email')
+    user = models.OneToOneField(
+        User,
+        on_delete=models.CASCADE,
+        null=True,
+        blank=True,
+        related_name='newsletter_subscription',
+        verbose_name='User'
+    )
+    is_active = models.BooleanField(default=True, verbose_name='Active')
+    subscribed_categories = models.JSONField(
+        default=list,
+        blank=True,
+        verbose_name='Subscribed Categories',
+        help_text='List of announcement types to receive'
+    )
+    confirmation_token = models.CharField(max_length=100, blank=True, verbose_name='Confirmation Token')
+    confirmed_at = models.DateTimeField(null=True, blank=True, verbose_name='Confirmed At')
+    unsubscribe_token = models.CharField(max_length=100, blank=True, verbose_name='Unsubscribe Token')
+
+    class Meta:
+        verbose_name = 'Newsletter Subscription'
+        verbose_name_plural = 'Newsletter Subscriptions'
+        ordering = ['-created_at']
+
+    def __str__(self):
+        return self.email
+
+    def save(self, *args, **kwargs):
+        if not self.confirmation_token:
+            import uuid
+            self.confirmation_token = str(uuid.uuid4())
+        if not self.unsubscribe_token:
+            import uuid
+            self.unsubscribe_token = str(uuid.uuid4())
+        super().save(*args, **kwargs)
+
+
+class PushNotificationDevice(BaseModel):
+    user = models.ForeignKey(
+        User,
+        on_delete=models.CASCADE,
+        related_name='push_devices',
+        verbose_name='User'
+    )
+    device_token = models.TextField(verbose_name='Device Token')
+    device_type = models.CharField(
+        max_length=10,
+        choices=[
+            ('web', 'Web'),
+            ('android', 'Android'),
+            ('ios', 'iOS'),
+        ],
+        verbose_name='Device Type'
+    )
+    is_active = models.BooleanField(default=True, verbose_name='Active')
+
+    class Meta:
+        verbose_name = 'Push Notification Device'
+        verbose_name_plural = 'Push Notification Devices'
+        unique_together = ['user', 'device_token']
+
+    def __str__(self):
+        return f"{self.user.username} - {self.device_type}"

backend/communications/push_notifications.py

@@ -0,0 +1,194 @@
+from django.conf import settings
+
+import json
+import logging
+from typing import List, Dict, Any, Optional
+from pywebpush import webpush, WebPushException
+
+from communications.models import PushNotificationDevice
+from events.models import Registration
+
+logger = logging.getLogger(__name__)
+
+
+class PushNotificationService:
+    """Service for handling web push notifications"""
+
+    def __init__(self):
+        self.vapid_private_key = getattr(settings, 'VAPID_PRIVATE_KEY', None)
+        self.vapid_public_key = getattr(settings, 'VAPID_PUBLIC_KEY', None)
+        self.vapid_claims = getattr(settings, 'VAPID_CLAIMS', {})
+
+    def send_notification(
+            self,
+            subscription_info: Dict[str, Any],
+            data: Dict[str, Any],
+            ttl: int = 86400
+    ) -> bool:
+        """
+        Send a push notification to a single device
+
+        Args:
+            subscription_info: Device subscription information
+            data: Notification payload
+            ttl: Time to live in seconds (default 24 hours)
+
+        Returns:
+            bool: True if successful, False otherwise
+        """
+        try:
+            webpush(
+                subscription_info=subscription_info,
+                data=json.dumps(data),
+                vapid_private_key=self.vapid_private_key,
+                vapid_claims=self.vapid_claims,
+                ttl=ttl
+            )
+            return True
+        except WebPushException as e:
+            logger.error(f"Push notification failed: {e}")
+            if e.response and e.response.status_code in [410, 413]:
+                # Subscription is no longer valid, should be removed
+                self._remove_invalid_subscription(subscription_info)
+            return False
+        except Exception as e:
+            logger.error(f"Unexpected error sending push notification: {e}")
+            return False
+
+    def send_to_multiple(
+            self,
+            devices: List[PushNotificationDevice],
+            data: Dict[str, Any],
+            ttl: int = 86400
+    ) -> Dict[str, int]:
+        """
+        Send push notification to multiple devices
+
+        Args:
+            devices: List of PushNotificationDevice objects
+            data: Notification payload
+            ttl: Time to live in seconds
+
+        Returns:
+            dict: Statistics of sent/failed notifications
+        """
+        stats = {'sent': 0, 'failed': 0}
+
+        for device in devices:
+            subscription_info = {
+                'endpoint': device.endpoint,
+                'keys': {
+                    'p256dh': device.p256dh_key,
+                    'auth': device.auth_key
+                }
+            }
+
+            if self.send_notification(subscription_info, data, ttl):
+                stats['sent'] += 1
+            else:
+                stats['failed'] += 1
+
+        return stats
+
+    def send_announcement_notification(
+            self,
+            announcement,
+            devices: Optional[List[PushNotificationDevice]] = None
+    ) -> Dict[str, int]:
+        """
+        Send push notification for an announcement
+
+        Args:
+            announcement: Announcement model instance
+            devices: Optional list of specific devices to send to
+
+        Returns:
+            dict: Statistics of sent/failed notifications
+        """
+        if devices is None:
+            # Get devices based on announcement audience
+            if announcement.audience == 'all':
+                devices = PushNotificationDevice.objects.filter(is_active=True)
+            elif announcement.audience == 'members':
+                devices = PushNotificationDevice.objects.filter(
+                    user__is_member=True,
+                    is_active=True
+                )
+            elif announcement.audience == 'committee':
+                devices = PushNotificationDevice.objects.filter(
+                    user__is_committee_member=True,
+                    is_active=True
+                )
+            else:
+                devices = PushNotificationDevice.objects.none()
+
+        # Prepare notification data
+        data = {
+            'title': announcement.title,
+            'body': announcement.content[:100] + '...' if len(announcement.content) > 100 else announcement.content,
+            'icon': '/static/images/logo.png',
+            'badge': '/static/images/badge.png',
+            'data': {
+                'type': 'announcement',
+                'id': announcement.id,
+                'url': f'/announcements/{announcement.id}/'
+            }
+        }
+
+        return self.send_to_multiple(devices, data)
+
+    def send_event_reminder_notification(
+            self,
+            event,
+            devices: Optional[List[PushNotificationDevice]] = None
+    ) -> Dict[str, int]:
+        """
+        Send push notification for event reminder
+
+        Args:
+            event: Event model instance
+            devices: Optional list of specific devices to send to
+
+        Returns:
+            dict: Statistics of sent/failed notifications
+        """
+        if devices is None:
+            # Get devices of registered users
+            registered_users = Registration.objects.filter(
+                event=event,
+                status='confirmed'
+            ).values_list('user_id', flat=True)
+
+            devices = PushNotificationDevice.objects.filter(
+                user_id__in=registered_users,
+                is_active=True
+            )
+
+        # Prepare notification data
+        data = {
+            'title': f'Event Reminder: {event.title}',
+            'body': f'Your event "{event.title}" starts in 24 hours!',
+            'icon': '/static/images/logo.png',
+            'badge': '/static/images/badge.png',
+            'data': {
+                'type': 'event_reminder',
+                'id': event.id,
+                'url': f'/events/{event.id}/'
+            }
+        }
+
+        return self.send_to_multiple(devices, data)
+
+    def _remove_invalid_subscription(self, subscription_info: Dict[str, Any]):
+        """Remove invalid subscription from database"""
+        try:
+            PushNotificationDevice.objects.filter(
+                endpoint=subscription_info['endpoint']
+            ).delete()
+            logger.info(f"Removed invalid subscription: {subscription_info['endpoint']}")
+        except Exception as e:
+            logger.error(f"Error removing invalid subscription: {e}")
+
+
+# Create a singleton instance
+push_service = PushNotificationService()

backend/communications/resources.py

@@ -0,0 +1,56 @@
+from django.contrib.auth import get_user_model
+
+from import_export import resources, fields
+from import_export.widgets import ForeignKeyWidget
+
+from communications.models import Announcement, NewsletterSubscription, PushNotificationDevice
+
+User = get_user_model()
+
+
+class AnnouncementResource(resources.ModelResource):
+    author = fields.Field(
+        column_name='author',
+        attribute='author',
+        widget=ForeignKeyWidget(User, 'username')
+    )
+
+    class Meta:
+        model = Announcement
+        fields = (
+            'id', 'title', 'content', 'announcement_type', 'priority',
+            'author', 'is_published', 'publish_date', 'send_email', 'send_push',
+            'target_audience', 'created_at', 'updated_at'
+        )
+        export_order = fields
+
+
+class NewsletterSubscriptionResource(resources.ModelResource):
+    user = fields.Field(
+        column_name='user',
+        attribute='user',
+        widget=ForeignKeyWidget(User, 'username')
+    )
+
+    class Meta:
+        model = NewsletterSubscription
+        fields = (
+            'id', 'email', 'user', 'is_active', 'subscribed_categories',
+            'confirmed_at', 'created_at', 'updated_at'
+        )
+        export_order = fields
+
+
+class PushNotificationDeviceResource(resources.ModelResource):
+    user = fields.Field(
+        column_name='user',
+        attribute='user',
+        widget=ForeignKeyWidget(User, 'username')
+    )
+
+    class Meta:
+        model = PushNotificationDevice
+        fields = (
+            'id', 'user', 'device_type', 'is_active', 'created_at', 'updated_at'
+        )
+        export_order = fields

backend/communications/tasks.py

@@ -0,0 +1,278 @@
+from django.utils import timezone
+from django.contrib.auth import get_user_model
+
+import logging
+from celery import shared_task
+from datetime import timedelta
+
+from events.models import Event, Registration
+from communications.models import Announcement, NewsletterSubscription
+from communications.utils import send_announcement_email, send_event_reminder, get_announcement_recipients
+from communications.push_notifications import push_service
+
+User = get_user_model()
+logger = logging.getLogger(__name__)
+SYSTEM_USER_ID = 1
+
+
+@shared_task(bind=True, max_retries=3)
+def send_announcement_notifications(self, announcement_id):
+    """Send email and push notifications for an announcement"""
+    try:
+        announcement = Announcement.objects.get(id=announcement_id)
+        
+        # Send email notifications
+        if announcement.send_email and not announcement.email_sent:
+            recipients = get_announcement_recipients(announcement)
+            if recipients:
+                success = send_announcement_email(announcement, recipients)
+                if success:
+                    announcement.email_sent = True
+                    announcement.save()
+                    logger.info(f"Email notifications sent for announcement {announcement.id}")
+        
+        # Send push notifications
+        if announcement.send_push and not announcement.push_sent:
+            sent_count = push_service.send_announcement_notification(announcement)
+            if sent_count > 0:
+                announcement.push_sent = True
+                announcement.save()
+                logger.info(f"Push notifications sent to {sent_count} devices for announcement {announcement.id}")
+        
+        return f"Notifications sent for announcement: {announcement.title}"
+        
+    except Announcement.DoesNotExist:
+        logger.error(f"Announcement {announcement_id} not found")
+        return f"Announcement {announcement_id} not found"
+    except Exception as exc:
+        logger.error(f"Failed to send announcement notifications: {exc}")
+        raise self.retry(exc=exc, countdown=60)
+
+
+@shared_task(bind=True, max_retries=3)
+def send_newsletter_confirmation_task(self, subscription_id):
+    """Send newsletter confirmation email"""
+    try:
+        from .utils import send_newsletter_confirmation
+        
+        subscription = NewsletterSubscription.objects.get(id=subscription_id)
+        success = send_newsletter_confirmation(subscription)
+        
+        if success:
+            logger.info(f"Newsletter confirmation sent to {subscription.email}")
+            return f"Newsletter confirmation sent to {subscription.email}"
+        else:
+            raise Exception("Failed to send newsletter confirmation")
+            
+    except NewsletterSubscription.DoesNotExist:
+        logger.error(f"Newsletter subscription {subscription_id} not found")
+        return f"Newsletter subscription {subscription_id} not found"
+    except Exception as exc:
+        logger.error(f"Failed to send newsletter confirmation: {exc}")
+        raise self.retry(exc=exc, countdown=60)
+
+
+@shared_task
+def send_event_reminders():
+    """Send reminders for events starting about 24 hours from now within a 30-minute window."""
+    try:
+        reminder_target = timezone.now() + timedelta(hours=24)
+        window = timedelta(minutes=30)
+        start_range = reminder_target - window
+        end_range = reminder_target + window
+        
+        events = Event.objects.filter(
+            start_time__range=(start_range, end_range),
+            status='published',
+            is_deleted=False
+        )
+        
+        total_sent = 0
+        
+        for event in events:
+            # Get confirmed registrations
+            registrations = Registration.objects.filter(
+                event=event,
+                status='confirmed',
+                is_deleted=False
+            ).select_related('user')
+            
+            for registration in registrations:
+                try:
+                    # Send email reminder
+                    send_event_reminder(event, registration.user)
+                    
+                    # Send push notification reminder
+                    push_service.send_event_reminder_notification(event, registration.user)
+                    
+                    total_sent += 1
+                    
+                except Exception as e:
+                    logger.error(f"Failed to send reminder to {registration.user.email}: {str(e)}")
+        
+        logger.info(f"Event reminders sent to {total_sent} users")
+        return f"Event reminders sent to {total_sent} users"
+        
+    except Exception as exc:
+        logger.error(f"Failed to send event reminders: {exc}")
+        raise exc
+
+
+@shared_task
+def send_weekly_newsletter():
+    """Send the weekly newsletter as the system user with recent announcements and upcoming events."""
+    try:
+        # Get active newsletter subscribers
+        subscribers = NewsletterSubscription.objects.filter(
+            is_active=True,
+            confirmed_at__isnull=False,
+            is_deleted=False
+        )
+        
+        if not subscribers.exists():
+            logger.info("No active newsletter subscribers found")
+            return "No active newsletter subscribers found"
+        
+        # Get recent announcements (last 7 days)
+        week_ago = timezone.now() - timedelta(days=7)
+        recent_announcements = Announcement.objects.filter(
+            is_published=True,
+            publish_date__gte=week_ago,
+            announcement_type__in=['general', 'academic', 'newsletter'],
+            is_deleted=False
+        ).order_by('-publish_date')[:5]
+        
+        # Get upcoming events (next 14 days)
+        two_weeks_ahead = timezone.now() + timedelta(days=14)
+        upcoming_events = Event.objects.filter(
+            start_time__range=(timezone.now(), two_weeks_ahead),
+            status='published',
+            is_deleted=False
+        ).order_by('start_time')[:5]
+        
+        newsletter_content = f"""
+# Weekly Newsletter - {timezone.now().strftime('%B %d, %Y')}
+
+## Recent Announcements
+"""
+        
+        for announcement in recent_announcements:
+            newsletter_content += f"- **{announcement.title}** ({announcement.publish_date.strftime('%B %d')})\n"
+        
+        newsletter_content += "\n## Upcoming Events\n"
+        
+        for event in upcoming_events:
+            newsletter_content += f"- **{event.title}** - {event.start_time.strftime('%B %d, %Y at %I:%M %p')}\n"
+        
+        if not recent_announcements.exists() and not upcoming_events.exists():
+            newsletter_content += "\nNo recent announcements or upcoming events this week."
+        
+        newsletter = Announcement.objects.create(
+            title=f"Weekly Newsletter - {timezone.now().strftime('%B %d, %Y')}",
+            content=newsletter_content,
+            announcement_type='newsletter',
+            priority='normal',
+            author_id=SYSTEM_USER_ID,
+            is_published=True,
+            publish_date=timezone.now(),
+            send_email=True,
+            target_audience='subscribers'
+        )
+        
+        # Send to subscribers
+        subscriber_emails = list(subscribers.values_list('email', flat=True))
+        success = send_announcement_email(newsletter, subscriber_emails)
+        
+        if success:
+            newsletter.email_sent = True
+            newsletter.save()
+            logger.info(f"Weekly newsletter sent to {len(subscriber_emails)} subscribers")
+            return f"Weekly newsletter sent to {len(subscriber_emails)} subscribers"
+        else:
+            raise Exception("Failed to send weekly newsletter")
+            
+    except Exception as exc:
+        logger.error(f"Failed to send weekly newsletter: {exc}")
+        raise exc
+
+
+@shared_task
+def cleanup_expired_tokens():
+    """Clean up expired newsletter confirmation tokens"""
+    try:
+        # Remove unconfirmed subscriptions older than 7 days
+        week_ago = timezone.now() - timedelta(days=7)
+        expired_subscriptions = NewsletterSubscription.objects.filter(
+            confirmed_at__isnull=True,
+            created_at__lt=week_ago
+        )
+        
+        count = expired_subscriptions.count()
+        expired_subscriptions.delete()
+        
+        logger.info(f"Cleaned up {count} expired newsletter subscriptions")
+        return f"Cleaned up {count} expired newsletter subscriptions"
+        
+    except Exception as exc:
+        logger.error(f"Failed to cleanup expired tokens: {exc}")
+        raise exc
+
+
+@shared_task
+def send_bulk_announcement(announcement_id, recipient_emails):
+    """Send announcement to a specific list of recipients"""
+    try:
+        announcement = Announcement.objects.get(id=announcement_id)
+        
+        # Split recipients into batches to avoid overwhelming the email server
+        batch_size = 50
+        total_sent = 0
+        
+        for i in range(0, len(recipient_emails), batch_size):
+            batch = recipient_emails[i:i + batch_size]
+            success = send_announcement_email(announcement, batch)
+            
+            if success:
+                total_sent += len(batch)
+                logger.info(f"Sent announcement to batch of {len(batch)} recipients")
+            
+            # Small delay between batches
+            import time
+            time.sleep(1)
+        
+        logger.info(f"Bulk announcement sent to {total_sent} recipients")
+        return f"Bulk announcement sent to {total_sent} recipients"
+        
+    except Exception as exc:
+        logger.error(f"Failed to send bulk announcement: {exc}")
+        raise exc
+
+
+@shared_task
+def process_scheduled_announcements():
+    """Process announcements scheduled for publication"""
+    try:
+        now = timezone.now()
+        
+        # Get announcements scheduled for publication
+        scheduled_announcements = Announcement.objects.filter(
+            is_published=True,
+            publish_date__lte=now,
+            email_sent=False,
+            send_email=True,
+            is_deleted=False
+        )
+        
+        processed_count = 0
+        
+        for announcement in scheduled_announcements:
+            # Send notifications
+            send_announcement_notifications.delay(announcement.id)
+            processed_count += 1
+        
+        logger.info(f"Processed {processed_count} scheduled announcements")
+        return f"Processed {processed_count} scheduled announcements"
+        
+    except Exception as exc:
+        logger.error(f"Failed to process scheduled announcements: {exc}")
+        raise exc

backend/communications/utils.py

@@ -0,0 +1,140 @@
+from django.contrib.auth import get_user_model
+from django.core.mail import send_mail
+from django.template.loader import render_to_string
+from django.utils.html import strip_tags
+from django.conf import settings
+
+import logging
+
+from communications.models import NewsletterSubscription
+
+logger = logging.getLogger(__name__)
+
+
+def send_announcement_email(announcement, recipients):
+    """Send announcement email to recipients"""
+    try:
+        template_name = f'emails/announcement_email.html'
+
+        context = {
+            'announcement': announcement,
+            'unsubscribe_url': f"{settings.FRONTEND_ROOT}newsletter/unsubscribe/",
+            'manage_subscription_url': f"{settings.FRONTEND_ROOT}newsletter/manage-subscription",
+        }
+
+        html_message = render_to_string(template_name, context)
+        plain_message = strip_tags(html_message)
+
+        subject = f"انجمن علمی کامپیوتر گیلان | {announcement.title}"
+
+        send_mail(
+            subject=subject,
+            message=plain_message,
+            from_email=settings.DEFAULT_FROM_EMAIL,
+            recipient_list=recipients,
+            html_message=html_message,
+            fail_silently=False,
+        )
+
+        logger.info(f"Announcement email sent to {len(recipients)} recipients")
+        return True
+            
+    except Exception as e:
+        logger.error(f"Failed to send announcement email: {str(e)}")
+        return False
+
+
+def send_newsletter_confirmation(subscription):
+    """Send newsletter confirmation email"""
+    try:
+        template_name = f'emails/newsletter_confirmation.html'
+
+        confirmation_url = f"{settings.FRONTEND_ROOT}confirm-subscription/{subscription.confirmation_token}"
+
+        context = {
+            'subscription': subscription,
+            'confirmation_url': confirmation_url,
+        }
+
+        html_message = render_to_string(template_name, context)
+        plain_message = strip_tags(html_message)
+
+        subject = "تأیید اشتراک خبرنامه"
+        send_mail(
+            subject=subject,
+            message=plain_message,
+            from_email=settings.DEFAULT_FROM_EMAIL,
+            recipient_list=[subscription.email],
+            html_message=html_message,
+            fail_silently=False,
+        )
+
+        logger.info(f"Newsletter confirmation sent to {subscription.email}")
+        return True
+            
+    except Exception as e:
+        logger.error(f"Failed to send newsletter confirmation: {str(e)}")
+        return False
+
+
+def send_event_reminder(event, user):
+    """Send event reminder email"""
+    try:
+        template_name = f'emails/event_reminder.html'
+
+        event_url = f"{settings.FRONTEND_ROOT}events/{event.slug}"
+
+        context = {
+            'event': event,
+            'user': user,
+            'event_url': event_url,
+        }
+
+        html_message = render_to_string(template_name, context)
+        plain_message = strip_tags(html_message)
+
+        subject = f"یادآوری رویداد: {event.title}"
+
+        send_mail(
+            subject=subject,
+            message=plain_message,
+            from_email=settings.DEFAULT_FROM_EMAIL,
+            recipient_list=[user.email],
+            html_message=html_message,
+            fail_silently=False,
+        )
+
+        logger.info(f"Event reminder sent to {user.email} for event {event.title}")
+        return True
+            
+    except Exception as e:
+        logger.error(f"Failed to send event reminder: {str(e)}")
+        return False
+
+
+def get_announcement_recipients(announcement):
+    """Get list of email addresses based on announcement target audience"""
+    
+    User = get_user_model()
+    recipients = []
+    
+    if announcement.target_audience == 'all':
+        # All users with email
+        recipients = list(User.objects.filter(email__isnull=False).values_list('email', flat=True))
+        
+    elif announcement.target_audience == 'members':
+        # Only members (users with is_member=True)
+        recipients = list(User.objects.filter(is_member=True, email__isnull=False).values_list('email', flat=True))
+        
+    elif announcement.target_audience == 'committee':
+        # Only committee members
+        recipients = list(User.objects.filter(is_committee=True, email__isnull=False).values_list('email', flat=True))
+        
+    elif announcement.target_audience == 'subscribers':
+        # Only newsletter subscribers
+        recipients = list(NewsletterSubscription.objects.filter(
+            is_active=True, 
+            confirmed_at__isnull=False
+        ).values_list('email', flat=True))
+    
+    return recipients

backend/config/__init__.py

@@ -0,0 +1,3 @@
+from config.services.celery import app as celery_app
+
+__all__ = ('celery_app',)

backend/config/asgi.py

@@ -0,0 +1,7 @@
+import os
+
+from django.core.asgi import get_asgi_application
+
+os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'config.settings.development')
+
+application = get_asgi_application()

backend/config/services/celery.py

@@ -0,0 +1,56 @@
+"""Celery application configuration and scheduling."""
+
+import os
+
+from celery import Celery
+from celery.schedules import crontab
+from decouple import config
+
+os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'config.settings.development')
+
+app = Celery('config')
+app.config_from_object('django.conf:settings', namespace='CELERY')
+app.autodiscover_tasks()
+
+app.conf.update(
+    broker_url=config('REDIS_URL', default='redis://localhost:6379/0'),
+    result_backend=config('REDIS_URL', default='redis://localhost:6379/0'),
+    task_serializer='json',
+    accept_content=['json'],
+    result_serializer='json',
+    timezone='UTC',
+    enable_utc=True,
+    task_track_started=True,
+    task_time_limit=30 * 60,
+    task_soft_time_limit=60,
+    worker_prefetch_multiplier=1,
+    worker_max_tasks_per_child=1000,
+)
+
+app.conf.beat_schedule = {
+    'send-event-reminders': {
+        'task': 'communications.tasks.send_event_reminders',
+        'schedule': crontab(minute=0, hour='*/1'),
+        'description': 'Runs hourly to notify about upcoming events.',
+    },
+    'send-weekly-newsletter': {
+        'task': 'communications.tasks.send_weekly_newsletter',
+        'schedule': crontab(hour=9, minute=0, day_of_week=1),
+        'description': 'Runs every Monday at 09:00 UTC.',
+    },
+    'cleanup-expired-tokens': {
+        'task': 'communications.tasks.cleanup_expired_tokens',
+        'schedule': crontab(hour=2, minute=0),
+        'description': 'Runs daily at 02:00 UTC.',
+    },
+    'process-scheduled-announcements': {
+        'task': 'communications.tasks.process_scheduled_announcements',
+        'schedule': crontab(minute='*/15'),
+        'description': 'Runs every 15 minutes to dispatch scheduled announcements.',
+    },
+}
+
+EMAIL_TIMEOUT_SECONDS = 10
+
+CELERY_TASK_SOFT_TIME_LIMIT = 20
+CELERY_TASK_TIME_LIMIT = 30

backend/config/services/location.py

@@ -0,0 +1,14 @@
+"""Configuration for Django location fields backed by OpenStreetMap."""
+
+DEFAULT_MAP_CENTER = [37.0629098, 50.4232464]
+
+LOCATION_FIELD = {
+    'map.provider': 'openstreetmap',
+    'map.zoom': 13,
+    'map.center': DEFAULT_MAP_CENTER,
+    'map.language': 'fa',
+    'search.provider': 'nominatim',
+    'search.url': 'https://nominatim.openstreetmap.org/search/',
+    'search.params': {'format': 'json', 'addressdetails': 1},
+    'search.headers': {'User-Agent': 'Django CS Association App'},
+}

backend/config/services/notifications.py

@@ -0,0 +1,12 @@
+from decouple import config
+
+# Added VAPID configuration for web push notifications
+# VAPID Configuration for Web Push Notifications
+VAPID_PUBLIC_KEY = config('VAPID_PUBLIC_KEY', default='')
+VAPID_PRIVATE_KEY = config('VAPID_PRIVATE_KEY', default='')
+VAPID_CLAIMS = {
+    "sub": config('VAPID_SUBJECT', default='mailto:admin@csassociation.com')
+}
+
+# Site URL for push notification links
+SITE_URL = config('SITE_URL', default='http://localhost:8000')

backend/config/services/unfold.py

@@ -0,0 +1,94 @@
+from django.conf import settings
+from django.templatetags.static import static
+
+# Django Unfold Configuration
+UNFOLD = {
+    "SITE_TITLE": "GuilanCE Association Admin",
+    "SITE_HEADER": "GuilanCE Association",
+    "SITE_URL": "/",
+    "SITE_ICON": lambda request: static("img/logo.png"),
+    # "SITE_LOGO": lambda request: static("img/logo.png"),
+    "SITE_SYMBOL": "speed",
+    "SHOW_HISTORY": True,
+    "SHOW_VIEW_ON_SITE": True,
+    # "SHOW_BACK_BUTTON": True,
+    "ENVIRONMENT": "config.services.unfold.environment_callback",
+    "LOGIN": {
+        "image": lambda request: request.build_absolute_uri("/static/images/login-bg.jpg"),
+        "redirect_after": lambda request: request.build_absolute_uri("/admin/"),
+    },
+    "STYLES": [
+        lambda request: request.build_absolute_uri("/static/css/styles.css"),
+    ],
+    "SCRIPTS": [
+        lambda request: request.build_absolute_uri("/static/js/scripts.js"),
+    ],
+    "COLORS": {
+        "primary": {
+            "50": "250 245 255",
+            "100": "243 232 255",
+            "200": "233 213 255",
+            "300": "216 180 254",
+            "400": "196 144 254",
+            "500": "168 85 247",
+            "600": "147 51 234",
+            "700": "126 34 206",
+            "800": "107 33 168",
+            "900": "88 28 135",
+        },
+    },
+    "EXTENSIONS": {
+        "modeltranslation": {
+            "flags": {
+                "en": "🇺🇸",
+                "fa": "🇮🇷",
+            },
+        },
+    },
+    "SIDEBAR": {
+        "show_search": True,
+        "show_all_applications": True,
+        "navigation": [
+            {
+                "title": "Navigation",
+                "separator": True,
+                "items": [
+                    {
+                        "title": "Dashboard",
+                        "icon": "dashboard",
+                        "link": lambda request: request.build_absolute_uri("/admin/"),
+                        # "badge": 3
+                    },
+                    {
+                        "title": "Users",
+                        "icon": "account_circle",
+                        "link": lambda request: request.build_absolute_uri("/admin/users/user/"),
+                    },
+                    {
+                        "title": "Blog",
+                        "icon": "post",
+                        "link": lambda request: request.build_absolute_uri("/admin/blog/"),
+                    },
+                    {
+                        "title": "Events",
+                        "icon": "event",
+                        "link": lambda request: request.build_absolute_uri("/admin/events/"),
+                    },
+                    {
+                        "title": "Gallery",
+                        "icon": "filter",
+                        "link": lambda request: request.build_absolute_uri("/admin/gallery/gallery/"),
+                    },
+                    {
+                        "title": "Communications",
+                        "icon": "call",
+                        "link": lambda request: request.build_absolute_uri("/admin/communications/"),
+                    },
+                ],
+            },
+        ],
+    },
+}
+
+def environment_callback(request):
+    return ["Development", "warning"] if settings.DEBUG else ["Production", "success"]

backend/config/services/zarinpal.py

@@ -0,0 +1,10 @@
+from decouple import config
+
+ZARINPAL_MERCHANT_ID = config('ZARINPAL_MERCHANT_ID', default='')
+ZARINPAL_USE_SANDBOX = config('ZARINPAL_USE_SANDBOX', default=False, cast=bool)
+
+ZARINPAL_API_BASE = "https://sandbox.zarinpal.com" if ZARINPAL_USE_SANDBOX else "https://payment.zarinpal.com"
+ZARINPAL_REQUEST_URL = f"{ZARINPAL_API_BASE}/pg/v4/payment/request.json"
+ZARINPAL_VERIFY_URL  = f"{ZARINPAL_API_BASE}/pg/v4/payment/verify.json"
+ZARINPAL_STARTPAY    = f"{ZARINPAL_API_BASE}/pg/StartPay/"
+ZARINPAL_CALLBACK_URL = config('ZARINPAL_CALLBACK_URL', default='http://localhost:8000/api/payments/callback')

backend/config/settings/base.py

@@ -0,0 +1,233 @@
+from decouple import config
+from pathlib import Path
+import os
+
+BASE_DIR = Path(__file__).resolve().parent.parent.parent
+
+SECRET_KEY = config('SECRET_KEY')
+
+DEBUG = config('DEBUG', default=False, cast=bool)
+
+ALLOWED_HOSTS = config('ALLOWED_HOSTS', default='').split(',')
+
+DJANGO_APPS = [
+    'unfold',
+    'unfold.contrib.filters',
+    'unfold.contrib.forms',
+    'unfold.contrib.import_export',
+    'unfold.contrib.location_field',
+
+    'django.contrib.admin',
+    'django.contrib.auth',
+    'django.contrib.contenttypes',
+    'django.contrib.sessions',
+    'django.contrib.messages',
+    'django.contrib.staticfiles',
+]
+
+THIRD_PARTY_APPS = [
+    'corsheaders',
+    'import_export',
+    'simplemde',
+    'location_field',
+    "django_prometheus",
+]
+
+LOCAL_APPS = [
+    'users',
+    'blog',
+    'gallery',
+    'events',
+    'certificates',
+    'communications',
+    'payments',
+    'utils',
+]
+
+INSTALLED_APPS = DJANGO_APPS + THIRD_PARTY_APPS + LOCAL_APPS
+
+MIDDLEWARE = [
+    "django_prometheus.middleware.PrometheusBeforeMiddleware",
+    'corsheaders.middleware.CorsMiddleware',
+    'django.middleware.security.SecurityMiddleware',
+    'whitenoise.middleware.WhiteNoiseMiddleware',
+    'django.contrib.sessions.middleware.SessionMiddleware',
+    'django.middleware.common.CommonMiddleware',
+    'django.middleware.csrf.CsrfViewMiddleware',
+    'django.contrib.auth.middleware.AuthenticationMiddleware',
+    'django.contrib.messages.middleware.MessageMiddleware',
+    'django.middleware.clickjacking.XFrameOptionsMiddleware',
+    "django_prometheus.middleware.PrometheusAfterMiddleware",
+]
+
+ROOT_URLCONF = 'config.urls'
+
+TEMPLATES = [
+    {
+        'BACKEND': 'django.template.backends.django.DjangoTemplates',
+        'DIRS': [BASE_DIR / 'templates'],
+        'APP_DIRS': True,
+        'OPTIONS': {
+            'context_processors': [
+                'django.template.context_processors.debug',
+                'django.template.context_processors.request',
+                'django.contrib.auth.context_processors.auth',
+                'django.contrib.messages.context_processors.messages',
+            ],
+        },
+    },
+]
+
+WSGI_APPLICATION = 'config.wsgi.application'
+
+# Database
+DATABASES = {
+    'default': {
+        'ENGINE': config('DB_ENGINE', 'django.db.backends.sqlite3'),
+        'NAME': config('DB_NAME', BASE_DIR / 'db.sqlite3'),
+        'USER': config('DB_USER'),
+        'PASSWORD': config('DB_PASSWORD'),
+        'HOST': config('DB_HOST', default='localhost'),
+        'PORT': config('DB_PORT', default='5432'),
+    }
+}
+
+# Password validation
+AUTH_PASSWORD_VALIDATORS = [
+    {
+        'NAME': 'django.contrib.auth.password_validation.UserAttributeSimilarityValidator',
+    },
+    {
+        'NAME': 'django.contrib.auth.password_validation.MinimumLengthValidator',
+    },
+    {
+        'NAME': 'django.contrib.auth.password_validation.CommonPasswordValidator',
+    },
+    {
+        'NAME': 'django.contrib.auth.password_validation.NumericPasswordValidator',
+    },
+]
+
+LANGUAGE_CODE = 'en-us'
+TIME_ZONE = 'Asia/Tehran'
+
+LANGUAGES = [
+    ('en', 'English'),
+    ('fa', 'فارسی'),
+]
+
+USE_I18N = True
+USE_L10N = True
+USE_TZ = True
+
+# For RTL support in admin
+LOCALE_PATHS = [BASE_DIR / 'locale']
+
+STATIC_URL = config('STATIC_URL', default='/static/')
+STATIC_ROOT = BASE_DIR / 'staticfiles'
+STATICFILES_DIRS = [BASE_DIR / 'static']
+
+MEDIA_URL = config('MEDIA_URL', default='/media/')
+MEDIA_ROOT = BASE_DIR / 'media'
+
+DEFAULT_AUTO_FIELD = 'django.db.models.BigAutoField'
+
+AUTH_USER_MODEL = 'users.User'
+
+# CORS Settings
+CORS_ALLOWED_ORIGINS = config('CORS_ALLOWED_ORIGINS', default='https://east-guilan-ce.ir').split(',')
+CORS_ALLOW_CREDENTIALS = True
+CSRF_TRUSTED_ORIGINS = ["https://east-guilan-ce.ir"]
+CSRF_COOKIE_SECURE = True
+SESSION_COOKIE_SECURE = True
+
+# Email Configuration
+EMAIL_BACKEND = config('EMAIL_BACKEND', default='django.core.mail.backends.console.EmailBackend')
+EMAIL_HOST = config('EMAIL_HOST', default='')
+EMAIL_PORT = config('EMAIL_PORT', default=587, cast=int)
+EMAIL_USE_TLS = config('EMAIL_USE_TLS', default=True, cast=bool)
+EMAIL_HOST_USER = config('EMAIL_HOST_USER', default='')
+EMAIL_HOST_PASSWORD = config('EMAIL_HOST_PASSWORD', default='')
+DEFAULT_FROM_EMAIL = config('DEFAULT_FROM_EMAIL', default='webmaster@localhost')
+
+# JWT Configuration
+JWT_SECRET_KEY = config('JWT_SECRET_KEY', default=SECRET_KEY)
+JWT_ALGORITHM = config('JWT_ALGORITHM', default='HS256')
+JWT_ACCESS_TOKEN_LIFETIME = config('JWT_ACCESS_TOKEN_LIFETIME', default=3600, cast=int)
+JWT_REFRESH_TOKEN_LIFETIME = config('JWT_REFRESH_TOKEN_LIFETIME', default=86400, cast=int)
+
+# Redis Configuration
+REDIS_URL = config('REDIS_URL', default='redis://localhost:6379/0')
+
+# Cache Configuration
+CACHES = {
+    'default': {
+        'BACKEND': 'django_prometheus.cache.backends.redis.RedisCache',
+        'LOCATION': REDIS_URL,
+    }
+}
+
+# Celery Configuration
+CELERY_BROKER_URL = REDIS_URL
+CELERY_RESULT_BACKEND = REDIS_URL
+
+
+# Logging Configuration
+LOGGING = {
+    'version': 1,
+    'disable_existing_loggers': False,
+    'formatters': {
+        'verbose': {
+            'format': '{levelname} {asctime} {module} {process:d} {thread:d} {message}',
+            'style': '{',
+        },
+        'simple': {
+            'format': '{levelname} {message}',
+            'style': '{',
+        },
+    },
+    'handlers': {
+        'file': {
+            'level': 'INFO',
+            'class': 'logging.FileHandler',
+            'filename': BASE_DIR / 'logs' / 'django.log',
+            'formatter': 'verbose',
+        },
+        'console': {
+            'level': 'INFO',
+            'class': 'logging.StreamHandler',
+            'formatter': 'simple',
+        },
+    },
+    'root': {
+        'handlers': ['console'],
+        'level': 'INFO',
+    },
+    'loggers': {
+        'django': {
+            'handlers': ['file', 'console'],
+            'level': 'INFO',
+            'propagate': False,
+        },
+        'apps': {
+            'handlers': ['file', 'console'],
+            'level': 'INFO',
+            'propagate': False,
+        },
+    },
+}
+
+# Create logs directory
+os.makedirs(BASE_DIR / 'logs', exist_ok=True)
+
+BACKEND_ROOT = config('DJANGO_HOST', default='http://localhost:8000/')
+FRONTEND_ROOT = config('FRONTEND_ROOT', default='http://localhost:3000/')
+FRONTEND_PASSWORD_RESET_PAGE = config('FRONTEND_PASSWORD_RESET_PAGE', default='http://localhost:3000/api/auth/reset-password-confirm/')
+FRONTEND_CALLBACK_URL = config('FRONTEND_CALLBACK_URL', default='http://localhost:3000/payments/result')
+
+DATABASES["default"]["ENGINE"] = "django_prometheus.db.backends.postgresql"
+
+from config.services.unfold import *
+from config.services.location import *
+from config.services.notifications import *
+from config.services.zarinpal import *

backend/config/settings/development.py

@@ -0,0 +1,18 @@
+from .base import *
+
+DEBUG = True
+
+# Additional development settings
+INTERNAL_IPS = [
+    "127.0.0.1",
+]
+
+# Email backend for development
+EMAIL_BACKEND = 'django.core.mail.backends.smtp.EmailBackend'
+
+# Disable caching in development
+CACHES = {
+    'default': {
+        'BACKEND': 'django.core.cache.backends.dummy.DummyCache',
+    }
+}

backend/config/settings/production.py

@@ -0,0 +1,21 @@
+from .base import *
+
+DEBUG = False
+
+# Security settings for production
+SECURE_BROWSER_XSS_FILTER = True
+SECURE_CONTENT_TYPE_NOSNIFF = True
+SECURE_HSTS_INCLUDE_SUBDOMAINS = True
+SECURE_HSTS_SECONDS = 31536000
+SECURE_REDIRECT_EXEMPT = []
+SECURE_SSL_REDIRECT = True
+SECURE_PROXY_SSL_HEADER = ('HTTP_X_FORWARDED_PROTO', 'https')
+SESSION_COOKIE_SECURE = True
+CSRF_COOKIE_SECURE = True
+X_FRAME_OPTIONS = 'DENY'
+
+# 🔹 Exempt /metrics from the redirect so Prometheus can scrape over HTTP
+SECURE_REDIRECT_EXEMPT = [r"^metrics$"]
+
+# Logging for production
+# LOGGING['handlers']['file']['filename'] = '/var/log/django/django.log'

backend/config/settings/test.py

@@ -0,0 +1,46 @@
+from .base import *
+
+# Lightweight defaults keep local/CI test runs isolated from production infra.
+
+TEST_DB_ENGINE = config("TEST_DB_ENGINE", default="django.db.backends.sqlite3")
+TEST_DB_NAME = config("TEST_DB_NAME", default=str(BASE_DIR / "db.test.sqlite3"))
+TEST_DB_USER = config("TEST_DB_USER", default="")
+TEST_DB_PASSWORD = config("TEST_DB_PASSWORD", default="")
+TEST_DB_HOST = config("TEST_DB_HOST", default="")
+TEST_DB_PORT = config("TEST_DB_PORT", default="")
+
+DATABASES["default"] = {
+    "ENGINE": TEST_DB_ENGINE,
+    "NAME": TEST_DB_NAME,
+    "USER": TEST_DB_USER,
+    "PASSWORD": TEST_DB_PASSWORD,
+    "HOST": TEST_DB_HOST,
+    "PORT": TEST_DB_PORT,
+}
+
+PASSWORD_HASHERS = [
+    "django.contrib.auth.hashers.MD5PasswordHasher",
+]
+
+EMAIL_BACKEND = "django.core.mail.backends.locmem.EmailBackend"
+
+CACHES = {
+    "default": {
+        "BACKEND": "django.core.cache.backends.locmem.LocMemCache",
+    }
+}
+
+CELERY_TASK_ALWAYS_EAGER = True
+CELERY_TASK_EAGER_PROPAGATES = True
+
+# Tests should not enforce HTTPS-only cookies to simplify client simulations.
+CSRF_COOKIE_SECURE = False
+SESSION_COOKIE_SECURE = False
+
+# Silence verbose INFO logs (e.g., Celery task output) during tests.
+LOGGING["handlers"]["console"]["level"] = "ERROR"  # type: ignore[index]
+LOGGING["root"]["level"] = "ERROR"  # type: ignore[index]
+if "django" in LOGGING["loggers"]:
+    LOGGING["loggers"]["django"]["level"] = "ERROR"  # type: ignore[index]
+if "apps" in LOGGING["loggers"]:
+    LOGGING["loggers"]["apps"]["level"] = "ERROR"  # type: ignore[index]

backend/config/urls.py

@@ -0,0 +1,24 @@
+from django.contrib import admin
+from django.urls import path, include
+from django.conf import settings
+from django.conf.urls.static import static
+from ninja import NinjaAPI
+from api.urls import router as api_router
+
+api = NinjaAPI(
+    title="CS Association API",
+    version="1.0.0",
+    description="API for University Computer Science Association",
+)
+
+api.add_router("", api_router)
+
+urlpatterns = [
+    path('admin/', admin.site.urls),
+    path('api/', api.urls),
+    path("", include("django_prometheus.urls")),
+]
+
+if settings.DEBUG:
+    urlpatterns += static(settings.MEDIA_URL, document_root=settings.MEDIA_ROOT)
+    urlpatterns += static(settings.STATIC_URL, document_root=settings.STATIC_ROOT)

backend/config/wsgi.py

@@ -0,0 +1,7 @@
+import os
+
+from django.core.wsgi import get_wsgi_application
+
+os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'config.settings.development')
+
+application = get_wsgi_application()

backend/docker/entrypoint.sh

@@ -0,0 +1,26 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+: "${DJANGO_WSGI_MODULE:=config.wsgi:application}"
+: "${DATABASE_URL:=postgres://${DB_USER:-postgres}:${DB_PASSWORD:-postgres}@db:5432/${DB_NAME:-app}}"
+
+# wait for db
+host="db"
+port="5432"
+for i in {1..60}; do
+  if nc -z "$host" "$port"; then
+    echo "DB ready"
+    break
+  fi
+  echo "Waiting for DB... ($i)"
+  sleep 2
+done
+
+python manage.py migrate --noinput || true
+python manage.py collectstatic --noinput || true
+
+# Start gunicorn (API)
+( exec gunicorn "$DJANGO_WSGI_MODULE" --bind 0.0.0.0:8000 --workers ${GUNICORN_WORKERS:-3} --threads ${GUNICORN_THREADS:-2} --timeout 60 ) &
+
+# Start nginx (Frontend)
+exec nginx -g "daemon off;"

backend/docker/nginx.conf

@@ -0,0 +1,23 @@
+server {
+  listen 8080;
+  server_name _;
+
+  root /usr/share/nginx/html;
+  index index.html;
+
+  location / {
+    try_files $uri $uri/ /index.html;
+  }
+
+  location /static/ {
+    alias /app/staticfiles/;
+    access_log off;
+    expires 30d;
+  }
+
+  location /media/ {
+    alias /app/media/;
+    access_log off;
+    expires 30d;
+  }
+}

backend/events/admin.py

@@ -0,0 +1,418 @@
+from django.contrib import admin, messages
+from django.template.response import TemplateResponse
+from django.contrib.admin.helpers import ACTION_CHECKBOX_NAME
+from django.template.loader import render_to_string
+from django.conf import settings
+from django.shortcuts import redirect
+from django.urls import reverse_lazy
+
+from import_export.admin import ImportExportModelAdmin
+from utils.templatetags.jalali import jdate
+from unfold.decorators import action as unfold_action
+
+from utils.admin import SoftDeleteListFilter, BaseModelAdmin
+from events.models import Event, Registration, EventEmailLog
+from events.resources import EventResource, RegistrationResource
+from events.tasks import (
+    queue_skyroom_credentials,
+    send_skyroom_credentials_individual_task,
+    send_event_reminder_task,
+    queue_event_announcement,
+    queue_invites_to_non_registered_users,
+)
+from events.admin_forms import AnnouncementForm
+from events.tasks import _send_html_email
+
+
+@admin.register(Event)
+class EventAdmin(BaseModelAdmin, ImportExportModelAdmin):
+    resource_class = EventResource
+    list_display = (
+        'title', 'event_type', 'start_time_display', 'end_time_display', 'status',
+        'price_display', 'capacity_display', 'attendees_display', 'is_registration_open_display'
+    )
+    list_filter = (
+        'event_type', 'status', 'is_deleted',
+        'start_time', 'end_time', 'registration_start_date', 'registration_end_date',
+        SoftDeleteListFilter
+    )
+    search_fields = ('title', 'description', 'address')
+    prepopulated_fields = {'slug': ('title',)}
+    date_hierarchy = 'start_time'
+    filter_horizontal = ('gallery_images',)
+
+    fieldsets = (
+        ('Event Details', {
+            'fields': ('title', 'slug', 'description', 'featured_image')
+        }),
+        ('Timing & Type', {
+            'fields': ('start_time', 'end_time', 'event_type', 'status')
+        }),
+        ('Location & Online', {
+            'fields': ('address', 'location', 'online_link'),
+            'description': 'For On-Site or Hybrid events, provide address and select on map. For Online events, provide a link.'
+        }),
+        ('Registration & Pricing', {
+            'fields': ('capacity', 'price', 'registration_start_date', 'registration_end_date', 'registration_success_markdown'),
+            'description': 'Leave capacity blank for unlimited. Leave price blank for free events.'
+        }),
+        ('Gallery', {
+            'fields': ('gallery_images',),
+            'description': 'Add images related to this event from the Gallery app.'
+        }),
+        ('Soft Delete', {
+            'fields': ('is_deleted', 'deleted_at'),
+            'classes': ('collapse',)
+        }),
+    )
+
+    readonly_fields = ('deleted_at',)
+
+    actions = BaseModelAdmin.actions + [
+        'make_published', 
+        'make_draft', 
+        'make_cancelled', 
+        'make_completed',
+        'restore_events',
+    ]
+
+    actions_row = [
+        'action_send_announcement',
+        'action_send_reminder_now',
+        'action_send_skyroom_credentials',
+        'action_invite_other_users',
+    ]
+
+    @admin.display(description="Price")
+    def price_display(self, obj):
+        return obj.price if obj.price is not None else "رایگان"
+
+    @admin.display(description="Start")
+    def start_time_display(self, obj):
+        return jdate(obj.start_time)
+
+    @admin.display(description="End")
+    def end_time_display(self, obj):
+        return jdate(obj.end_time)
+
+    @admin.display(description="Capacity")
+    def capacity_display(self, obj):
+        return obj.capacity if obj.capacity is not None else "نامحدود"
+
+    @admin.display(description="Attendees")
+    def attendees_display(self, obj):
+        return obj.current_attendees_count
+
+    @admin.display(description="Open", boolean=True)
+    def is_registration_open_display(self, obj):
+        return obj.is_registration_open
+    
+    @admin.action(description="Mark selected events as published")
+    def make_published(self, request, queryset):
+        queryset.update(status=Event.StatusChoices.PUBLISHED)
+        self.message_user(request, f"Published {queryset.count()} events.")
+
+    @admin.action(description="Mark selected events as draft")
+    def make_draft(self, request, queryset):
+        queryset.update(status=Event.StatusChoices.DRAFT)
+        self.message_user(request, f"Marked {queryset.count()} events as draft.")
+
+    @admin.action(description="Mark selected events as cancelled")
+    def make_cancelled(self, request, queryset):
+        queryset.update(status=Event.StatusChoices.CANCELLED)
+        self.message_user(request, f"Cancelled {queryset.count()} events.")
+
+    @admin.action(description="Mark selected events as completed")
+    def make_completed(self, request, queryset):
+        queryset.update(status=Event.StatusChoices.COMPLETED)
+        self.message_user(request, f"Marked {queryset.count()} events as completed.")
+
+    @admin.action(description="Restore selected events")
+    def restore_events(self, request, queryset):
+        for event in queryset:
+            event.restore()
+        self.message_user(request, f"Restored {queryset.count()} events.")
+
+    @unfold_action(description="Send Skyroom Credentials")
+    def action_send_skyroom_credentials(self, request, object_id: int):
+        event = Event.objects.get(pk=object_id)
+        queue_skyroom_credentials.delay(event.pk)
+        self.message_user(request, f"ارسال مشخصات اسکای‌روم برای رویداد '{event.title}' صف شد.", messages.SUCCESS)
+        return redirect(reverse_lazy("admin:events_event_changelist"))
+
+    @unfold_action(description="Send new Reminder")
+    def action_send_reminder_now(self, request, object_id: int):
+        event = Event.objects.get(pk=object_id)
+        send_event_reminder_task.delay(event.pk)
+        self.message_user(request, f"یادآوری برای رویداد '{event.title}' صف شد.", messages.SUCCESS)
+        return redirect(reverse_lazy("admin:events_event_changelist"))
+
+    @unfold_action(description="send new Announcement")
+    def action_send_announcement(self, request, object_id: int):
+        """
+        این اکشن یک فرم می‌گیرد (عنوان/متن/وضعیت‌ها) و با تمپلیت Unfold نشان داده می‌شود.
+        """
+        form = AnnouncementForm(request.POST or None)
+        event = Event.objects.get(pk=object_id)
+
+        if request.method == "POST" and form.is_valid():
+            subject = form.cleaned_data["subject"]
+            body_html = form.cleaned_data["body_html"]
+            statuses = form.cleaned_data["statuses"] or None
+            queue_event_announcement.delay(event.pk, subject, body_html, statuses=statuses)
+            self.message_user(request, f"اطلاعیه برای رویداد '{event.title}' صف شد.", messages.SUCCESS)
+            return redirect(reverse_lazy("admin:events_event_changelist"))
+
+        context = {
+            **self.admin_site.each_context(request),
+            "title": "ارسال اطلاعیه گروهی",
+            "opts": self.model._meta,
+            "form": form,
+            "action_name": "action_send_announcement",
+            "action_checkbox_name": ACTION_CHECKBOX_NAME,
+        }
+        return TemplateResponse(request, "forms/admin_announcement.html", context)
+
+    @unfold_action(description="Invite other users")
+    def action_invite_other_users(self, request, object_id: int):
+        event = Event.objects.get(pk=object_id)
+        queue_invites_to_non_registered_users.delay(event.pk)
+        self.message_user(request, f"دعوت برای شرکت در رویداد '{event.title}' صف شد.", messages.SUCCESS)
+        return redirect(reverse_lazy("admin:events_event_changelist"))
+
+
+@admin.register(Registration)
+class RegistrationAdmin(BaseModelAdmin, ImportExportModelAdmin):
+    resource_class = RegistrationResource
+    list_display = (
+        'user',
+        'event',
+        'status',
+        'registered_at',
+        'ticket_id',
+        'discount_code',
+        'discount_amount',
+        'final_price',
+    )
+    list_filter = (
+        'status',
+        'event',
+        'is_deleted',
+        'registered_at',
+        SoftDeleteListFilter
+    )
+    search_fields = ('user__username', 'user__email', 'user__first_name', 'user__last_name', 'event__title', 'ticket_id')
+    readonly_fields = (
+        'ticket_id',
+        'registered_at',
+        'confirmation_email_sent_at',
+        'cancellation_email_sent_at',
+        'discount_code',
+        'discount_amount',
+        'final_price',
+        'deleted_at',
+    )
+
+    fieldsets = (
+        (
+            'Registration Details',
+            {
+                'fields': (
+                    'user',
+                    'event',
+                    'status',
+                    'registered_at',
+                    'ticket_id',
+                    'confirmation_email_sent_at',
+                    'cancellation_email_sent_at',
+                )
+            },
+        ),
+        (
+            'Pricing & Discount',
+            {
+                'fields': ('discount_code', 'discount_amount', 'final_price'),
+                'classes': ('collapse',),
+            },
+        ),
+        ('Soft Delete', {
+            'fields': ('is_deleted', 'deleted_at'),
+            'classes': ('collapse',)
+        }),
+    )
+
+    actions = BaseModelAdmin.actions + [
+        'confirm_registrations', 
+        'cancel_registrations', 
+        'mark_attended',
+        'restore_registrations',
+    ]
+    actions_row = [
+        'action_email_selected',
+        'action_send_skyroom_credentials',
+    ]
+
+    @admin.action(description="Confirm selected registrations")
+    def confirm_registrations(self, request, queryset):
+        queryset.update(status=Registration.StatusChoices.CONFIRMED)
+        self.message_user(request, f"Confirmed {queryset.count()} registrations.")
+
+    @admin.action(description="Cancel selected registrations")
+    def cancel_registrations(self, request, queryset):
+        queryset.update(status=Registration.StatusChoices.CANCELLED)
+        self.message_user(request, f"Cancelled {queryset.count()} registrations.")
+
+    @admin.action(description="Mark selected registrations as attended")
+    def mark_attended(self, request, queryset):
+        queryset.update(status=Registration.StatusChoices.ATTENDED)
+        self.message_user(request, f"Marked {queryset.count()} registrations as attended.")
+
+    @admin.action(description="Restore selected registrations")
+    def restore_registrations(self, request, queryset):
+        for registration in queryset:
+            registration.restore()
+        self.message_user(request, f"Restored {queryset.count()} registrations.")
+
+    @unfold_action(description="send email to registrated user")
+    def action_email_selected(self, request, object_id: int):
+        """
+        همان فرم اطلاعیه را می‌گیرد و به افراد انتخاب‌شده ایمیل می‌زند.
+        برای نمایش فرم، از تمپلیت Unfold استفاده می‌کنیم.
+        """
+        form = AnnouncementForm(request.POST or None)
+        registration = Registration.objects.get(id=object_id)
+        
+        if request.method == "POST" and form.is_valid():
+            subject = form.cleaned_data["subject"]
+            body_html = form.cleaned_data["body_html"]
+
+            user = registration.user
+            ctx = {
+                "user": user,
+                "event": registration.event,
+                "body_html": body_html,
+                "event_url": f"{settings.FRONTEND_ROOT}events/{registration.event.slug}",
+            }
+            html = render_to_string("emails/event_announcement.html", ctx)
+            _send_html_email(subject, html, user.email)
+            
+            self.message_user(request, f"ارسال ایمیل انجام شد.", messages.SUCCESS)
+            return redirect(reverse_lazy("admin:events_registration_changelist"))
+
+        context = {
+            **self.admin_site.each_context(request),
+            "title": "ارسال ایمیل به ثبت‌نام‌های انتخاب‌شده",
+            "form": AnnouncementForm(),
+            "opts": self.model._meta,
+            "action_name": "action_email_selected",
+            "action_checkbox_name": ACTION_CHECKBOX_NAME,
+        }
+        return TemplateResponse(request, "forms/admin_announcement.html", context)
+
+    @unfold_action(description="Send Skyroom Credentials")
+    def action_send_skyroom_credentials(self, request, object_id: int):
+        send_skyroom_credentials_individual_task.delay(object_id)
+        self.message_user(request, f"ارسال مشخصات اسکای‌روم به کاربر مربوطه صف شد.", messages.SUCCESS)
+        return redirect(reverse_lazy("admin:events_registration_changelist"))
+
+
+from events.tasks import send_invite_to_user
+
+
+
+@admin.register(EventEmailLog)
+class EventEmailLogAdmin(BaseModelAdmin, ImportExportModelAdmin):
+    list_display = (
+        "id",
+        "event",
+        "user",
+        "user_email",
+        "kind",
+        "status",
+        "sent_at",
+        "created_at",
+    )
+    list_filter = (
+        "kind",
+        "status",
+        "event",
+        ("sent_at", admin.EmptyFieldListFilter),
+        ("error", admin.EmptyFieldListFilter),
+        SoftDeleteListFilter,
+    )
+    search_fields = (
+        "user__email",
+        "user__username",
+        "user__first_name",
+        "user__last_name",
+        "event__title",
+    )
+    autocomplete_fields = ("event", "user")
+    date_hierarchy = "created_at"
+    ordering = ("-created_at",)
+    list_per_page = 50
+    list_select_related = ("event", "user")
+
+    # چون این مدل برای ایدمپوتنسی حیاتی است، ویرایش دستی را محدود می‌کنیم
+    readonly_fields = (
+        "event",
+        "user",
+        "kind",
+        "status",
+        "error",
+        "sent_at",
+        "created_at",
+        "updated_at",
+    )
+    fields = readonly_fields
+
+    def has_add_permission(self, request):
+        return False
+
+    def has_change_permission(self, request, obj=None):
+        return True
+
+    actions = BaseModelAdmin.actions + [
+        'resend_selected_emails'
+    ]
+
+    @admin.display(description="Email", ordering="user__email")
+    def user_email(self, obj):
+        return obj.user.email or "—"
+
+    @admin.action(description="ارسال مجدد ایمیل برای رکوردهای انتخاب‌شده")
+    def resend_selected_emails(self, request, queryset):
+        """
+        رکوردهای SENT را اسکیپ می‌کند، بقیه را به وضعیت pending برمی‌گرداند
+        و تسک ارسال تکی را در صف می‌گذارد (ایدِمپوتنت).
+        """
+        queued = 0
+        skipped = 0
+
+        for log in queryset.select_related("event", "user"):
+            if log.status == EventEmailLog.STATUS_SENT:
+                skipped += 1
+                continue
+
+            # برگرداندن به pending و پاک کردن خطا
+            if log.status != EventEmailLog.STATUS_PENDING or log.error:
+                log.status = EventEmailLog.STATUS_PENDING
+                log.error = ""
+                log.save(update_fields=["status", "error", "updated_at"])
+
+            # صف کردن تسک اتمی
+            send_invite_to_user.delay(log.event_id, log.user_id)
+            queued += 1
+
+        if queued:
+            self.message_user(
+                request,
+                "%(n)d مورد در صف ارسال قرار گرفت." % {"n": queued},
+                level=messages.SUCCESS,
+            )
+        if skipped:
+            self.message_user(
+                request,
+                "%(n)d مورد قبلاً ارسال شده بود و نادیده گرفته شد." % {"n": skipped},
+                level=messages.WARNING,
+            )

backend/events/admin_forms.py

@@ -0,0 +1,25 @@
+from django import forms
+
+from unfold.widgets import UnfoldAdminTextInputWidget, UnfoldAdminTextareaWidget
+
+from events.models import Registration
+
+
+class AnnouncementForm(forms.Form):
+    subject = forms.CharField(
+        label="Subject", 
+        max_length=200,
+        widget=UnfoldAdminTextInputWidget,
+    )
+    body_html = forms.CharField(
+        label="Text (HTML or plain-text)",
+        widget=UnfoldAdminTextareaWidget,
+        help_text="you can enter either HTML or plain-text."
+    )
+    statuses = forms.MultipleChoiceField(
+        label="Statuses to sent",
+        required=False,
+        choices=Registration.StatusChoices.choices,
+        initial=[Registration.StatusChoices.CONFIRMED, Registration.StatusChoices.ATTENDED],
+        widget=forms.CheckboxSelectMultiple,
+    )

backend/events/apps.py

@@ -0,0 +1,6 @@
+from django.apps import AppConfig
+
+
+class EventsConfig(AppConfig):
+    default_auto_field = 'django.db.models.BigAutoField'
+    name = 'events'

backend/events/fixtures/events.json

@@ -0,0 +1,379 @@
+[
+  {
+    "model": "events.event",
+    "pk": 1,
+    "fields": {
+      "created_at": "2024-02-28T10:00:00Z",
+      "updated_at": "2024-02-28T10:00:00Z",
+      "is_deleted": false,
+      "title": "کارگاه یادگیری ماشین پیشرفته",
+      "slug": "advanced-machine-learning-workshop",
+      "description": "# کارگاه یادگیری ماشین پیشرفته\n\nدر این کارگاه با تکنیک‌های پیشرفته یادگیری ماشین آشنا خواهید شد.\n\n## سرفصل‌ها:\n- Deep Learning\n- Neural Networks\n- TensorFlow و Keras\n- پروژه عملی\n\n## پیش‌نیازها:\n- آشنایی با پایتون\n- دانش پایه ریاضی\n- تجربه کار با NumPy",
+      "start_time": "2024-03-15T14:00:00Z",
+      "end_time": "2024-03-15T18:00:00Z",
+      "event_type": "on_site",
+      "address": "سالن کنفرانس دانشکده مهندسی کامپیوتر",
+      "location": "35.7219,51.3890",
+      "status": "published",
+      "capacity": 50,
+      "price": "150000.00",
+      "registration_start_date": "2024-03-01T00:00:00Z",
+      "registration_end_date": "2024-03-14T23:59:59Z"
+    }
+  },
+  {
+    "model": "events.event",
+    "pk": 2,
+    "fields": {
+      "created_at": "2024-03-02T09:00:00Z",
+      "updated_at": "2024-03-02T09:00:00Z",
+      "is_deleted": false,
+      "title": "مسابقه برنامه‌نویسی بهاری",
+      "slug": "spring-programming-contest",
+      "description": "# مسابقه برنامه‌نویسی بهاری\n\nمسابقه‌ای هیجان‌انگیز برای تمامی علاقه‌مندان به برنامه‌نویسی\n\n## جوایز:\n- نفر اول: ۵ میلیون تومان\n- نفر دوم: ۳ میلیون تومان  \n- نفر سوم: ۲ میلیون تومان\n\n## قوانین:\n- مسابقه انفرادی\n- مدت زمان: ۳ ساعت\n- ۸ مسئله الگوریتمی\n- زبان‌های مجاز: C++, Java, Python",
+      "start_time": "2024-03-22T09:00:00Z",
+      "end_time": "2024-03-22T12:00:00Z",
+      "event_type": "on_site",
+      "address": "آزمایشگاه کامپیوتر شماره ۱",
+      "location": "35.7225,51.3885",
+      "status": "published",
+      "capacity": 80,
+      "price": null,
+      "registration_start_date": "2024-03-05T00:00:00Z",
+      "registration_end_date": "2024-03-20T23:59:59Z"
+    }
+  },
+  {
+    "model": "events.event",
+    "pk": 3,
+    "fields": {
+      "created_at": "2024-03-08T11:00:00Z",
+      "updated_at": "2024-03-08T11:00:00Z",
+      "is_deleted": false,
+      "title": "وبینار امنیت سایبری",
+      "slug": "cybersecurity-webinar",
+      "description": "# وبینار امنیت سایبری\n\nآشنایی با آخرین تهدیدات سایبری و روش‌های مقابله\n\n## موضوعات:\n- تهدیدات جدید سایبری\n- روش‌های حفاظت\n- ابزارهای امنیتی\n- مطالعه موردی حملات\n\n## مدرس:\nدکتر محمد رضایی - متخصص امنیت سایبری",
+      "start_time": "2024-03-28T19:00:00Z",
+      "end_time": "2024-03-28T21:00:00Z",
+      "event_type": "online",
+      "online_link": "https://meet.google.com/abc-defg-hij",
+      "status": "published",
+      "capacity": 200,
+      "price": null,
+      "registration_start_date": "2024-03-10T00:00:00Z",
+      "registration_end_date": "2024-03-27T23:59:59Z"
+    }
+  },
+  {
+    "model": "events.event",
+    "pk": 4,
+    "fields": {
+      "created_at": "2024-03-18T14:00:00Z",
+      "updated_at": "2024-03-18T14:00:00Z",
+      "is_deleted": false,
+      "title": "کارگاه React.js و Next.js",
+      "slug": "reactjs-nextjs-workshop",
+      "description": "# کارگاه React.js و Next.js\n\nآموزش کامل توسعه وب مدرن با React و Next.js\n\n## محتوای کارگاه:\n- مبانی React.js\n- Hooks و State Management\n- Next.js و SSR\n- پروژه عملی\n\n## مدرس:\nمهندس امیر قربانی - توسعه‌دهنده فول‌استک",
+      "start_time": "2024-04-05T13:00:00Z",
+      "end_time": "2024-04-05T17:00:00Z",
+      "event_type": "hybrid",
+      "address": "کلاس ۲۰۵ ساختمان مهندسی کامپیوتر",
+      "location": "35.7230,51.3880",
+      "online_link": "https://zoom.us/j/123456789",
+      "status": "published",
+      "capacity": 40,
+      "price": "200000.00",
+      "registration_start_date": "2024-03-20T00:00:00Z",
+      "registration_end_date": "2024-04-04T23:59:59Z"
+    }
+  },
+  {
+    "model": "events.event",
+    "pk": 5,
+    "fields": {
+      "created_at": "2024-03-22T16:00:00Z",
+      "updated_at": "2024-03-22T16:00:00Z",
+      "is_deleted": false,
+      "title": "بازدید از شرکت دیجی‌کالا",
+      "slug": "digikala-company-visit",
+      "description": "# بازدید از شرکت دیجی‌کالا\n\nبازدید علمی از یکی از بزرگ‌ترین شرکت‌های فناوری کشور\n\n## برنامه بازدید:\n- آشنایی با ساختار شرکت\n- بازدید از بخش‌های مختلف\n- گفتگو با مهندسان\n- معرفی فرصت‌های شغلی\n\n## نکات مهم:\n- حمل و نقل رایگان\n- ناهار در محل\n- اهدای هدایای تبلیغاتی",
+      "start_time": "2024-04-12T08:00:00Z",
+      "end_time": "2024-04-12T16:00:00Z",
+      "event_type": "on_site",
+      "address": "شرکت دیجی‌کالا، تهران",
+      "location": "35.7580,51.4100",
+      "status": "published",
+      "capacity": 30,
+      "price": null,
+      "registration_start_date": "2024-03-25T00:00:00Z",
+      "registration_end_date": "2024-04-10T23:59:59Z"
+    }
+  },
+  {
+    "model": "events.event",
+    "pk": 6,
+    "fields": {
+      "created_at": "2024-03-30T12:00:00Z",
+      "updated_at": "2024-03-30T12:00:00Z",
+      "is_deleted": false,
+      "title": "هکاتون هوش مصنوعی",
+      "slug": "ai-hackathon",
+      "description": "# هکاتون هوش مصنوعی\n\nرقابت ۴۸ ساعته برای ساخت پروژه‌های هوش مصنوعی\n\n## موضوعات:\n- پردازش زبان طبیعی\n- بینایی کامپیوتر\n- یادگیری تقویتی\n- هوش مصنوعی در پزشکی\n\n## جوایز:\n- تیم اول: ۱۰ میلیون تومان\n- تیم دوم: ۶ میلیون تومان\n- تیم سوم: ۴ میلیون تومان\n\n## امکانات:\n- غذا و نوشیدنی رایگان\n- فضای کار ۲۴ ساعته\n- منتورینگ توسط اساتید",
+      "start_time": "2024-04-19T18:00:00Z",
+      "end_time": "2024-04-21T18:00:00Z",
+      "event_type": "on_site",
+      "address": "مرکز نوآوری دانشگاه",
+      "location": "35.7200,51.3900",
+      "status": "published",
+      "capacity": 60,
+      "price": "100000.00",
+      "registration_start_date": "2024-04-01T00:00:00Z",
+      "registration_end_date": "2024-04-17T23:59:59Z"
+    }
+  },
+  {
+    "model": "events.event",
+    "pk": 7,
+    "fields": {
+      "created_at": "2024-04-08T15:00:00Z",
+      "updated_at": "2024-04-08T15:00:00Z",
+      "is_deleted": false,
+      "title": "سمینار کارآفرینی فناوری",
+      "slug": "tech-entrepreneurship-seminar",
+      "description": "# سمینار کارآفرینی فناوری\n\nآشنایی با دنیای کارآفرینی و استارتاپ‌های فناوری\n\n## سخنرانان:\n- دکتر علی احمدی - موسس استارتاپ تپسی\n- خانم سارا محمدی - مدیرعامل کافه‌بازار\n- مهندس رضا کریمی - سرمایه‌گذار فرشته\n\n## موضوعات:\n- ایده‌یابی و اعتبارسنجی\n- تیم‌سازی\n- جذب سرمایه\n- بازاریابی دیجیتال",
+      "start_time": "2024-04-26T14:00:00Z",
+      "end_time": "2024-04-26T18:00:00Z",
+      "event_type": "hybrid",
+      "address": "آمفی‌تئاتر مرکزی دانشگاه",
+      "location": "35.7210,51.3895",
+      "online_link": "https://meet.google.com/xyz-uvw-rst",
+      "status": "published",
+      "capacity": 150,
+      "price": null,
+      "registration_start_date": "2024-04-10T00:00:00Z",
+      "registration_end_date": "2024-04-25T23:59:59Z"
+    }
+  },
+  {
+    "model": "events.event",
+    "pk": 8,
+    "fields": {
+      "created_at": "2024-04-12T13:00:00Z",
+      "updated_at": "2024-04-12T13:00:00Z",
+      "is_deleted": false,
+      "title": "کارگاه DevOps و Docker",
+      "slug": "devops-docker-workshop",
+      "description": "# کارگاه DevOps و Docker\n\nآموزش عملی ابزارهای DevOps و کانتینریزیشن\n\n## سرفصل‌ها:\n- مقدمه‌ای بر DevOps\n- Docker و Containerization\n- Docker Compose\n- CI/CD Pipeline\n- Kubernetes مقدماتی\n\n## پیش‌نیازها:\n- آشنایی با Linux\n- تجربه کار با Terminal\n- دانش پایه شبکه",
+      "start_time": "2024-05-03T09:00:00Z",
+      "end_time": "2024-05-03T17:00:00Z",
+      "event_type": "on_site",
+      "address": "آزمایشگاه شبکه دانشکده",
+      "location": "35.7215,51.3888",
+      "status": "published",
+      "capacity": 25,
+      "price": "300000.00",
+      "registration_start_date": "2024-04-15T00:00:00Z",
+      "registration_end_date": "2024-05-01T23:59:59Z"
+    }
+  },
+  {
+    "model": "events.event",
+    "pk": 9,
+    "fields": {
+      "created_at": "2024-04-18T10:00:00Z",
+      "updated_at": "2024-04-18T10:00:00Z",
+      "is_deleted": false,
+      "title": "مسابقه طراحی UI/UX",
+      "slug": "ui-ux-design-contest",
+      "description": "# مسابقه طراحی UI/UX\n\nرقابت خلاقانه برای طراحی بهترین رابط کاربری\n\n## موضوع مسابقه:\nطراحی اپلیکیشن موبایل برای مدیریت تسک‌های دانشجویی\n\n## معیارهای داوری:\n- خلاقیت و نوآوری\n- قابلیت استفاده\n- زیبایی بصری\n- تجربه کاربری\n\n## جوایز:\n- نفر اول: تبلت iPad\n- نفر دوم: هدفون بی‌سیم\n- نفر سوم: پاوربانک",
+      "start_time": "2024-05-10T10:00:00Z",
+      "end_time": "2024-05-10T18:00:00Z",
+      "event_type": "on_site",
+      "address": "استودیو طراحی دانشکده هنر",
+      "location": "35.7240,51.3870",
+      "status": "published",
+      "capacity": 40,
+      "price": "50000.00",
+      "registration_start_date": "2024-04-20T00:00:00Z",
+      "registration_end_date": "2024-05-08T23:59:59Z"
+    }
+  },
+  {
+    "model": "events.event",
+    "pk": 10,
+    "fields": {
+      "created_at": "2024-04-28T17:00:00Z",
+      "updated_at": "2024-04-28T17:00:00Z",
+      "is_deleted": false,
+      "title": "نشست فارغ‌التحصیلان",
+      "slug": "alumni-meetup",
+      "description": "# نشست فارغ‌التحصیلان\n\nدیدار با فارغ‌التحصیلان موفق رشته مهندسی کامپیوتر\n\n## برنامه:\n- معرفی فارغ‌التحصیلان\n- تجربیات شغلی\n- مشاوره تحصیلی\n- شبکه‌سازی\n- ضیافت شام\n\n## مهمانان ویژه:\n- دکتر حسن زارع - مدیر فنی گوگل\n- مهندس مریم حسینی - بنیان‌گذار استارتاپ\n- دکتر امیر قربانی - استاد MIT",
+      "start_time": "2024-05-17T17:00:00Z",
+      "end_time": "2024-05-17T22:00:00Z",
+      "event_type": "on_site",
+      "address": "سالن همایش‌های دانشگاه",
+      "location": "35.7205,51.3892",
+      "status": "published",
+      "capacity": 100,
+      "price": null,
+      "registration_start_date": "2024-05-01T00:00:00Z",
+      "registration_end_date": "2024-05-15T23:59:59Z"
+    }
+  },
+  {
+    "model": "events.registration",
+    "pk": 1,
+    "fields": {
+      "created_at": "2024-03-02T10:30:00Z",
+      "updated_at": "2024-03-02T10:30:00Z",
+      "is_deleted": false,
+      "registered_at": "2024-03-02T10:30:00Z",
+      "event": 1,
+      "user": 3,
+      "status": "confirmed"
+    }
+  },
+  {
+    "model": "events.registration",
+    "pk": 2,
+    "fields": {
+      "created_at": "2024-03-03T14:15:00Z",
+      "updated_at": "2024-03-03T14:15:00Z",
+      "is_deleted": false,
+      "registered_at": "2024-03-03T14:15:00Z",
+      "event": 1,
+      "user": 4,
+      "status": "confirmed"
+    }
+  },
+  {
+    "model": "events.registration",
+    "pk": 3,
+    "fields": {
+      "created_at": "2024-03-06T09:20:00Z",
+      "updated_at": "2024-03-06T09:20:00Z",
+      "is_deleted": false,
+      "registered_at": "2024-03-06T09:20:00Z",
+      "event": 2,
+      "user": 5,
+      "status": "confirmed"
+    }
+  },
+  {
+    "model": "events.registration",
+    "pk": 4,
+    "fields": {
+      "created_at": "2024-03-07T16:45:00Z",
+      "updated_at": "2024-03-07T16:45:00Z",
+      "is_deleted": false,
+      "registered_at": "2024-03-07T16:45:00Z",
+      "event": 2,
+      "user": 6,
+      "status": "confirmed"
+    }
+  },
+  {
+    "model": "events.registration",
+    "pk": 5,
+    "fields": {
+      "created_at": "2024-03-12T11:30:00Z",
+      "updated_at": "2024-03-12T11:30:00Z",
+      "is_deleted": false,
+      "registered_at": "2024-03-12T11:30:00Z",
+      "event": 3,
+      "user": 7,
+      "status": "confirmed"
+    }
+  },
+  {
+    "model": "events.registration",
+    "pk": 6,
+    "fields": {
+      "created_at": "2024-03-13T13:25:00Z",
+      "updated_at": "2024-03-13T13:25:00Z",
+      "is_deleted": false,
+      "registered_at": "2024-03-13T13:25:00Z",
+      "event": 3,
+      "user": 8,
+      "status": "confirmed"
+    }
+  },
+  {
+    "model": "events.registration",
+    "pk": 7,
+    "fields": {
+      "created_at": "2024-03-22T15:10:00Z",
+      "updated_at": "2024-03-22T15:10:00Z",
+      "is_deleted": false,
+      "registered_at": "2024-03-22T15:10:00Z",
+      "event": 4,
+      "user": 9,
+      "status": "pending"
+    }
+  },
+  {
+    "model": "events.registration",
+    "pk": 8,
+    "fields": {
+      "created_at": "2024-03-23T12:40:00Z",
+      "updated_at": "2024-03-23T12:40:00Z",
+      "is_deleted": false,
+      "registered_at": "2024-03-23T12:40:00Z",
+      "event": 4,
+      "user": 10,
+      "status": "confirmed"
+    }
+  },
+  {
+    "model": "events.registration",
+    "pk": 9,
+    "fields": {
+      "created_at": "2024-03-27T08:55:00Z",
+      "updated_at": "2024-03-27T08:55:00Z",
+      "is_deleted": false,
+      "registered_at": "2024-03-27T08:55:00Z",
+      "event": 5,
+      "user": 11,
+      "status": "confirmed"
+    }
+  },
+  {
+    "model": "events.registration",
+    "pk": 10,
+    "fields": {
+      "created_at": "2024-04-02T14:20:00Z",
+      "updated_at": "2024-04-02T14:20:00Z",
+      "is_deleted": false,
+      "registered_at": "2024-04-02T14:20:00Z",
+      "event": 6,
+      "user": 12,
+      "status": "confirmed"
+    }
+  },
+  {
+    "model": "events.registration",
+    "pk": 11,
+    "fields": {
+      "created_at": "2024-04-12T10:15:00Z",
+      "updated_at": "2024-04-12T10:15:00Z",
+      "is_deleted": false,
+      "registered_at": "2024-04-12T10:15:00Z",
+      "event": 7,
+      "user": 2,
+      "status": "confirmed"
+    }
+  },
+  {
+    "model": "events.registration",
+    "pk": 12,
+    "fields": {
+      "created_at": "2024-04-16T16:30:00Z",
+      "updated_at": "2024-04-16T16:30:00Z",
+      "is_deleted": false,
+      "registered_at": "2024-04-16T16:30:00Z",
+      "event": 8,
+      "user": 1,
+      "status": "confirmed"
+    }
+  }
+]

backend/events/migrations/0001_initial.py

@@ -0,0 +1,60 @@
+# Generated by Django 5.2.5 on 2025-10-16 12:07
+
+import location_field.models.plain
+import uuid
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    initial = True
+
+    dependencies = [
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='Event',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('created_at', models.DateTimeField(auto_now_add=True)),
+                ('updated_at', models.DateTimeField(auto_now=True)),
+                ('is_deleted', models.BooleanField(default=False)),
+                ('deleted_at', models.DateTimeField(blank=True, null=True)),
+                ('title', models.CharField(max_length=255)),
+                ('slug', models.SlugField(blank=True, max_length=255, unique=True)),
+                ('description', models.TextField(help_text='Event description in Markdown format')),
+                ('start_time', models.DateTimeField()),
+                ('end_time', models.DateTimeField()),
+                ('address', models.CharField(blank=True, help_text='Physical address or venue name', max_length=255, null=True)),
+                ('location', location_field.models.plain.PlainLocationField(blank=True, help_text='Select location on map', max_length=63, null=True)),
+                ('event_type', models.CharField(choices=[('online', 'آنلاین'), ('on_site', 'حضوری'), ('hybrid', 'آنلاین/حضوری')], default='on_site', max_length=10)),
+                ('online_link', models.URLField(blank=True, help_text='Link for online events (e.g., Zoom, Google Meet)', max_length=500, null=True)),
+                ('status', models.CharField(choices=[('draft', 'Draft'), ('published', 'Published'), ('cancelled', 'Cancelled'), ('completed', 'Completed')], default='draft', max_length=10)),
+                ('capacity', models.PositiveIntegerField(blank=True, help_text='Maximum number of attendees (leave blank for unlimited)', null=True)),
+                ('price', models.IntegerField(default=0, help_text='Price of the event. Leave blank for free events.')),
+                ('registration_start_date', models.DateTimeField(blank=True, null=True)),
+                ('registration_end_date', models.DateTimeField(blank=True, null=True)),
+                ('featured_image', models.ImageField(blank=True, null=True, upload_to='events/featured/')),
+            ],
+            options={
+                'ordering': ['start_time'],
+            },
+        ),
+        migrations.CreateModel(
+            name='Registration',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('created_at', models.DateTimeField(auto_now_add=True)),
+                ('updated_at', models.DateTimeField(auto_now=True)),
+                ('is_deleted', models.BooleanField(default=False)),
+                ('deleted_at', models.DateTimeField(blank=True, null=True)),
+                ('registered_at', models.DateTimeField(auto_now_add=True)),
+                ('status', models.CharField(choices=[('pending', 'Pending'), ('confirmed', 'Confirmed'), ('cancelled', 'Cancelled'), ('attended', 'Attended')], default='pending', max_length=10)),
+                ('ticket_id', models.UUIDField(default=uuid.uuid4, editable=False, unique=True)),
+            ],
+            options={
+                'ordering': ['registered_at'],
+            },
+        ),
+    ]

backend/events/migrations/0002_initial.py

@@ -0,0 +1,27 @@
+# Generated by Django 5.2.5 on 2025-10-16 12:07
+
+import django.db.models.deletion
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    initial = True
+
+    dependencies = [
+        ('events', '0001_initial'),
+        ('gallery', '0001_initial'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='event',
+            name='gallery_images',
+            field=models.ManyToManyField(blank=True, help_text='Images taken during or related to the event.', related_name='event_galleries', to='gallery.gallery'),
+        ),
+        migrations.AddField(
+            model_name='registration',
+            name='event',
+            field=models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='registrations', to='events.event'),
+        ),
+    ]

backend/events/migrations/0003_initial.py

@@ -0,0 +1,39 @@
+# Generated by Django 5.2.5 on 2025-10-16 12:07
+
+import django.db.models.deletion
+from django.conf import settings
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    initial = True
+
+    dependencies = [
+        ('events', '0002_initial'),
+        migrations.swappable_dependency(settings.AUTH_USER_MODEL),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='registration',
+            name='user',
+            field=models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='event_registrations', to=settings.AUTH_USER_MODEL),
+        ),
+        migrations.AddIndex(
+            model_name='event',
+            index=models.Index(fields=['status', 'start_time'], name='events_even_status_189ced_idx'),
+        ),
+        migrations.AddIndex(
+            model_name='event',
+            index=models.Index(fields=['event_type'], name='events_even_event_t_a87b5c_idx'),
+        ),
+        migrations.AddIndex(
+            model_name='registration',
+            index=models.Index(fields=['event', 'status'], name='events_regi_event_i_c98244_idx'),
+        ),
+        migrations.AddIndex(
+            model_name='registration',
+            index=models.Index(fields=['user'], name='events_regi_user_id_a0262e_idx'),
+        ),
+    ]

backend/events/migrations/0004_event_registration_success_markdown.py

@@ -0,0 +1,18 @@
+# Generated by Django 5.2.5 on 2025-10-16 12:09
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('events', '0003_initial'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='event',
+            name='registration_success_markdown',
+            field=models.TextField(blank=True, help_text='Optional markdown shown to users after a successful registration.', null=True),
+        ),
+    ]

backend/events/migrations/0005_registration_cancellation_email_sent_at_and_more.py

@@ -0,0 +1,23 @@
+# Generated by Django 5.2.5 on 2025-10-16 13:22
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('events', '0004_event_registration_success_markdown'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='registration',
+            name='cancellation_email_sent_at',
+            field=models.DateTimeField(blank=True, null=True),
+        ),
+        migrations.AddField(
+            model_name='registration',
+            name='confirmation_email_sent_at',
+            field=models.DateTimeField(blank=True, null=True),
+        ),
+    ]

backend/events/migrations/0006_alter_event_options_alter_registration_options_and_more.py

@@ -0,0 +1,43 @@
+# Generated by Django 5.2.5 on 2025-10-25 20:47
+
+import django.db.models.deletion
+import django.utils.timezone
+from django.conf import settings
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('events', '0005_registration_cancellation_email_sent_at_and_more'),
+        migrations.swappable_dependency(settings.AUTH_USER_MODEL),
+    ]
+
+    operations = [
+        migrations.AlterModelOptions(
+            name='event',
+            options={'ordering': ['-start_time']},
+        ),
+        migrations.AlterModelOptions(
+            name='registration',
+            options={'ordering': ['-registered_at']},
+        ),
+        migrations.CreateModel(
+            name='EventEmailLog',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('kind', models.CharField(choices=[('invite_non_registered', 'Invite non-registered users')], max_length=64)),
+                ('status', models.CharField(choices=[('pending', 'Pending'), ('sent', 'Sent'), ('failed', 'Failed')], default='pending', max_length=16)),
+                ('error', models.TextField(blank=True, null=True)),
+                ('sent_at', models.DateTimeField(blank=True, null=True)),
+                ('created_at', models.DateTimeField(default=django.utils.timezone.now)),
+                ('updated_at', models.DateTimeField(auto_now=True)),
+                ('event', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='email_logs', to='events.event')),
+                ('user', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='email_logs', to=settings.AUTH_USER_MODEL)),
+            ],
+            options={
+                'indexes': [models.Index(fields=['event', 'kind', 'status'], name='events_even_event_i_d6c2f2_idx'), models.Index(fields=['user', 'kind', 'status'], name='events_even_user_id_67be40_idx')],
+                'unique_together': {('event', 'user', 'kind')},
+            },
+        ),
+    ]

backend/events/migrations/0007_eventemaillog_deleted_at_eventemaillog_is_deleted_and_more.py

@@ -0,0 +1,28 @@
+# Generated by Django 5.2.5 on 2025-10-25 21:18
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('events', '0006_alter_event_options_alter_registration_options_and_more'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='eventemaillog',
+            name='deleted_at',
+            field=models.DateTimeField(blank=True, null=True),
+        ),
+        migrations.AddField(
+            model_name='eventemaillog',
+            name='is_deleted',
+            field=models.BooleanField(default=False),
+        ),
+        migrations.AlterField(
+            model_name='eventemaillog',
+            name='created_at',
+            field=models.DateTimeField(auto_now_add=True),
+        ),
+    ]

backend/events/migrations/0008_alter_eventemaillog_kind.py

@@ -0,0 +1,18 @@
+# Generated by Django 5.2.5 on 2025-11-05 11:29
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('events', '0007_eventemaillog_deleted_at_eventemaillog_is_deleted_and_more'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='eventemaillog',
+            name='kind',
+            field=models.CharField(choices=[('invite_non_registered', 'Invite non-registered users'), ('send_skyroom_credentials', 'send skyroom credentials'), ('send_event_announcement', 'send_event_announcement'), ('send_event_announcement2', 'send_event_announcement2'), ('send_event_announcement3', 'send_event_announcement3')], max_length=64),
+        ),
+    ]

backend/events/migrations/0009_registration_discount_amount_and_more.py

@@ -0,0 +1,30 @@
+# Generated by Django 4.2.13 on 2025-11-17 13:15
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('payments', '0002_initial'),
+        ('events', '0008_alter_eventemaillog_kind'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='registration',
+            name='discount_amount',
+            field=models.PositiveIntegerField(default=0),
+        ),
+        migrations.AddField(
+            model_name='registration',
+            name='discount_code',
+            field=models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.SET_NULL, related_name='registrations', to='payments.discountcode'),
+        ),
+        migrations.AddField(
+            model_name='registration',
+            name='final_price',
+            field=models.PositiveIntegerField(blank=True, null=True),
+        ),
+    ]

backend/events/migrations/0010_backfill_registration_discounts.py

@@ -0,0 +1,55 @@
+from django.db import migrations
+
+
+def copy_payment_discounts(apps, schema_editor):
+    Registration = apps.get_model("events", "Registration")
+    Payment = apps.get_model("payments", "Payment")
+
+    payments = (
+        Payment.objects.exclude(discount_code__isnull=True)
+        .select_related("discount_code")
+        .order_by("id")
+    )
+    for payment in payments:
+        registration = (
+            Registration.objects.filter(event_id=payment.event_id, user_id=payment.user_id)
+            .order_by("-registered_at")
+            .first()
+        )
+        if not registration:
+            continue
+
+        updated_fields = []
+        if payment.discount_code_id and not registration.discount_code_id:
+            registration.discount_code_id = payment.discount_code_id
+            updated_fields.append("discount_code")
+        if payment.discount_amount and not registration.discount_amount:
+            registration.discount_amount = payment.discount_amount
+            updated_fields.append("discount_amount")
+        if payment.amount is not None and registration.final_price is None:
+            registration.final_price = payment.amount
+            updated_fields.append("final_price")
+
+        if updated_fields:
+            registration.save(update_fields=updated_fields)
+
+        if payment.registration_id is None:
+            payment.registration_id = registration.id
+            payment.save(update_fields=["registration"])
+
+
+def reverse_copy_payment_discounts(apps, schema_editor):
+    # No-op for reverse; data retention preferred.
+    pass
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("payments", "0003_payment_registration"),
+        ("events", "0009_registration_discount_amount_and_more"),
+    ]
+
+    operations = [
+        migrations.RunPython(copy_payment_discounts, reverse_copy_payment_discounts),
+    ]

backend/events/migrations/0011_eventemaillog_context_hash.py

@@ -0,0 +1,22 @@
+# Generated by Django 5.2.5 on 2025-11-17 19:30
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('events', '0010_backfill_registration_discounts'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='eventemaillog',
+            name='context_hash',
+            field=models.CharField(blank=True, max_length=64, null=True),
+        ),
+        migrations.AlterUniqueTogether(
+            name='eventemaillog',
+            unique_together={('event', 'user', 'kind', 'context_hash')},
+        ),
+    ]

backend/events/migrations/0012_alter_eventemaillog_kind.py

@@ -0,0 +1,18 @@
+# Generated by Django 4.2.13 on 2025-11-18 08:54
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('events', '0011_eventemaillog_context_hash'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='eventemaillog',
+            name='kind',
+            field=models.CharField(choices=[('invite_non_registered', 'Invite non-registered users'), ('send_skyroom_credentials', 'Skyroom credentials'), ('send_event_announcement', 'Event announcement'), ('send_event_announcement2', 'Event announcement 2'), ('send_event_announcement3', 'Event announcement 3')], max_length=64),
+        ),
+    ]

backend/events/models.py

@@ -0,0 +1,269 @@
+from django.db import models
+from django.db import models
+from django.conf import settings
+from django.utils import timezone
+from django.utils.text import slugify
+
+import hashlib
+import uuid
+
+import markdown
+from location_field.models.plain import PlainLocationField as LocationField
+
+from utils.models import BaseModel
+
+
+class Event(BaseModel):
+    class TypeChoices(models.TextChoices):
+        ONLINE = 'online', 'آنلاین'
+        ON_SITE = 'on_site', 'حضوری'
+        HYBRID = 'hybrid', 'آنلاین/حضوری'
+
+    class StatusChoices(models.TextChoices):
+        DRAFT = 'draft', 'Draft'
+        PUBLISHED = 'published', 'Published'
+        CANCELLED = 'cancelled', 'Cancelled'
+        COMPLETED = 'completed', 'Completed'
+
+    title = models.CharField(max_length=255)
+    slug = models.SlugField(max_length=255, unique=True, blank=True)
+    description = models.TextField(help_text="Event description in Markdown format")
+
+    start_time = models.DateTimeField()
+    end_time = models.DateTimeField()
+
+    address = models.CharField(max_length=255, blank=True, null=True, help_text="Physical address or venue name")
+    location = LocationField(based_fields=['address'], zoom=15, blank=True, null=True,
+                             help_text="Select location on map")
+
+    event_type = models.CharField(max_length=10, choices=TypeChoices.choices, default=TypeChoices.ON_SITE)
+    online_link = models.URLField(max_length=500, blank=True, null=True,
+                                  help_text="Link for online events (e.g., Zoom, Google Meet)")
+
+    status = models.CharField(max_length=10, choices=StatusChoices.choices, default=StatusChoices.DRAFT)
+    capacity = models.PositiveIntegerField(null=True, blank=True,
+                                           help_text="Maximum number of attendees (leave blank for unlimited)")
+
+    price = models.IntegerField(default=0, help_text="Price of the event. Leave blank for free events.")
+
+    registration_start_date = models.DateTimeField(null=True, blank=True)
+    registration_end_date = models.DateTimeField(null=True, blank=True)
+    featured_image = models.ImageField(upload_to='events/featured/', null=True, blank=True)
+    gallery_images = models.ManyToManyField('gallery.Gallery', blank=True, related_name='event_galleries',
+                                            help_text="Images taken during or related to the event.")
+
+    registration_success_markdown = models.TextField(
+        blank=True, null=True,
+        help_text="Optional markdown shown to users after a successful registration."
+    )
+
+    class Meta:
+        ordering = ['-start_time']
+        indexes = [
+            models.Index(fields=['status', 'start_time']),
+            models.Index(fields=['event_type']),
+        ]
+
+    def __str__(self):
+        return self.title
+
+    def save(self, *args, **kwargs):
+        if not self.slug:
+            self.slug = slugify(self.title)
+        super().save(*args, **kwargs)
+
+    @property
+    def description_html(self):
+        """Convert markdown description to HTML"""
+        return markdown.markdown(
+            self.description,
+            extensions=[
+                'markdown.extensions.extra',
+                'markdown.extensions.toc',
+            ]
+        )
+
+    @property
+    def is_registration_open(self):
+        now = timezone.now()
+        return (self.registration_start_date is None or now >= self.registration_start_date) and \
+            (self.registration_end_date is None or now <= self.registration_end_date)
+
+    @property
+    def current_attendees_count(self):
+        """Count confirmed attendees"""
+        return self.registrations.filter(status__in=[Registration.StatusChoices.CONFIRMED, Registration.StatusChoices.ATTENDED], is_deleted=False).count()
+
+    @property
+    def has_available_slots(self):
+        """Check whether registration slots are available, treating None as unlimited capacity."""
+        if self.capacity is None:
+            return True
+        return self.current_attendees_count < self.capacity
+
+
+class Registration(BaseModel):
+    class StatusChoices(models.TextChoices):
+        PENDING = 'pending', 'Pending'
+        CONFIRMED = 'confirmed', 'Confirmed'
+        CANCELLED = 'cancelled', 'Cancelled'
+        ATTENDED = 'attended', 'Attended'
+
+    event = models.ForeignKey(Event, on_delete=models.CASCADE, related_name='registrations')
+    user = models.ForeignKey(settings.AUTH_USER_MODEL, on_delete=models.CASCADE, related_name='event_registrations')
+    registered_at = models.DateTimeField(auto_now_add=True)
+    status = models.CharField(max_length=10, choices=StatusChoices.choices,
+                              default=StatusChoices.PENDING)
+    ticket_id = models.UUIDField(default=uuid.uuid4, unique=True, editable=False)
+
+    confirmation_email_sent_at = models.DateTimeField(null=True, blank=True)
+    cancellation_email_sent_at = models.DateTimeField(null=True, blank=True)
+    discount_code = models.ForeignKey(
+        "payments.DiscountCode",
+        null=True,
+        blank=True,
+        on_delete=models.SET_NULL,
+        related_name="registrations",
+    )
+    discount_amount = models.PositiveIntegerField(default=0)
+    final_price = models.PositiveIntegerField(null=True, blank=True)
+
+    class Meta:
+        ordering = ['-registered_at']
+        indexes = [
+            models.Index(fields=['event', 'status']),
+            models.Index(fields=['user']),
+        ]
+
+    def __str__(self):
+        return f"{self.user.username} registered for {self.event.title}"
+
+    @property
+    def status_label(self):
+        """Human-readable label for the current registration status."""
+        return self.get_status_display()
+
+    def save(self, *args, **kwargs):
+            # detect create vs update
+            is_create = self._state.adding
+            old_status = None
+
+            if not is_create and self.pk:
+                old_status = (
+                    self.__class__.objects.only("status").get(pk=self.pk).status
+                )
+
+            # save first (so we have a pk + final values)
+            super().save(*args, **kwargs)
+
+            # 1) on create -> send confirmation if pending/confirmed (and not sent before)
+            if is_create and self.status == self.StatusChoices.CONFIRMED and not self.confirmation_email_sent_at:
+                # lazy import to avoid circular import
+                from events.tasks import send_registration_confirmation_email
+                send_registration_confirmation_email.delay(str(self.pk))
+                self.confirmation_email_sent_at = timezone.now()
+                super().save(update_fields=["confirmation_email_sent_at"])
+
+            # 2) status changed -> cancelled
+            if (not is_create) and (old_status != self.StatusChoices.CANCELLED) and (self.status == self.StatusChoices.CANCELLED) and (not self.cancellation_email_sent_at):
+                from events.tasks import send_registration_cancellation_email
+                send_registration_cancellation_email.delay(str(self.pk))
+                self.cancellation_email_sent_at = timezone.now()
+                super().save(update_fields=["cancellation_email_sent_at"])
+
+            # 3) status changed -> confirmed (if not sent before)
+            if (not is_create) and (old_status != self.StatusChoices.CONFIRMED) and (self.status == self.StatusChoices.CONFIRMED) and (not self.confirmation_email_sent_at):
+                from events.tasks import send_registration_confirmation_email
+                send_registration_confirmation_email.delay(str(self.pk))
+                self.confirmation_email_sent_at = timezone.now()
+                super().save(update_fields=["confirmation_email_sent_at"])
+
+
+class EventEmailLog(BaseModel):
+    class KindChoices(models.TextChoices):
+        INVITE_NON_REGISTERED = "invite_non_registered", "Invite non-registered users"
+        SKYROOM_CREDENTIALS = "send_skyroom_credentials", "Skyroom credentials"
+        EVENT_ANNOUNCEMENT = "send_event_announcement", "Event announcement"
+        EVENT_ANNOUNCEMENT2 = "send_event_announcement2", "Event announcement 2"
+        EVENT_ANNOUNCEMENT3 = "send_event_announcement3", "Event announcement 3"
+        EVENT_REMINDER = "send_event_reminder", "Event reminder"
+
+    class StatusChoices(models.TextChoices):
+        PENDING = "pending", "Pending"
+        SENT = "sent", "Sent"
+        FAILED = "failed", "Failed"
+
+    KIND_INVITE_NON_REGISTERED = KindChoices.INVITE_NON_REGISTERED
+    KIND_SKYROOM_CREDENTIALS = KindChoices.SKYROOM_CREDENTIALS
+    KIND_EVENT_ANNOUNCEMENT = KindChoices.EVENT_ANNOUNCEMENT
+    KIND_EVENT_ANNOUNCEMENT2 = KindChoices.EVENT_ANNOUNCEMENT2
+    KIND_EVENT_ANNOUNCEMENT3 = KindChoices.EVENT_ANNOUNCEMENT3
+    KIND_EVENT_REMINDER = KindChoices.EVENT_REMINDER
+    KIND_CHOICES = KindChoices.choices
+
+    STATUS_PENDING = StatusChoices.PENDING
+    STATUS_SENT = StatusChoices.SENT
+    STATUS_FAILED = StatusChoices.FAILED
+    STATUS_CHOICES = StatusChoices.choices
+
+    event = models.ForeignKey('events.Event', on_delete=models.CASCADE, related_name='email_logs')
+    user = models.ForeignKey(settings.AUTH_USER_MODEL, on_delete=models.CASCADE, related_name='email_logs')
+    kind = models.CharField(max_length=64, choices=KIND_CHOICES)
+    status = models.CharField(max_length=16, choices=STATUS_CHOICES, default=STATUS_PENDING)
+    error = models.TextField(blank=True, null=True)
+    sent_at = models.DateTimeField(blank=True, null=True)
+    context_hash = models.CharField(max_length=64, blank=True, null=True)
+
+    class Meta:
+        unique_together = ("event", "user", "kind", "context_hash")
+        indexes = [
+            models.Index(fields=["event", "kind", "status"]),
+            models.Index(fields=["user", "kind", "status"]),
+        ]
+
+    def __str__(self):
+        return f"{self.event.id} - {self.user.id} - {self.kind} - {self.status}"
+
+    @staticmethod
+    def _hash_context(context):
+        if context is None:
+            return None
+        if not isinstance(context, str):
+            context = str(context)
+        return hashlib.sha256(context.encode("utf-8")).hexdigest()
+
+    @classmethod
+    def claim(cls, *, event_id, user_id, kind, context=None):
+        context_hash = cls._hash_context(context)
+        log, created = cls.objects.get_or_create(
+            event_id=event_id,
+            user_id=user_id,
+            kind=kind,
+            context_hash=context_hash,
+            defaults={"status": cls.STATUS_PENDING},
+        )
+        if not created and log.status in (cls.STATUS_PENDING, cls.STATUS_SENT):
+            return log, True
+        if not created:
+            log._commit_status(cls.STATUS_PENDING, error="")
+        return log, False
+
+    def _commit_status(self, status, *, error="", sent_at=None):
+        self.status = status
+        self.error = error
+        update_fields = ["status", "error"]
+        if status == self.STATUS_SENT:
+            self.sent_at = sent_at or timezone.now()
+            update_fields.append("sent_at")
+        elif self.sent_at is not None:
+            self.sent_at = None
+            update_fields.append("sent_at")
+        if hasattr(self, "updated_at"):
+            update_fields.append("updated_at")
+        self.save(update_fields=update_fields)
+
+    def mark_sent(self):
+        self._commit_status(self.STATUS_SENT)
+
+    def mark_failed(self, error):
+        self._commit_status(self.STATUS_FAILED, error=error)

backend/events/resources.py

@@ -0,0 +1,86 @@
+from import_export import resources, fields
+from import_export.widgets import ForeignKeyWidget, ManyToManyWidget
+
+from events.models import Event, Registration
+from users.models import User
+from gallery.models import Gallery
+from payments.models import DiscountCode
+
+class EventResource(resources.ModelResource):
+    gallery_images = fields.Field(
+        column_name='gallery_images',
+        attribute='gallery_images',
+        widget=ManyToManyWidget(Gallery, field='title', separator='|')
+    )
+
+    class Meta:
+        model = Event
+        fields = (
+            'id', 'title', 'slug', 'description', 'start_time', 'end_time',
+            'event_type', 'address', 'location', 'online_link', 'status',
+            'capacity', 'price', 'registration_start_date', 'registration_end_date',
+            'featured_image', 'gallery_images', 'created_at', 'updated_at',
+            'is_deleted', 'deleted_at'
+        )
+        export_order = fields
+
+class RegistrationResource(resources.ModelResource):
+    """Export registrations with user attributes and shortened ticket identifiers."""
+
+    event = fields.Field(
+        column_name='event',
+        attribute='event',
+        widget=ForeignKeyWidget(Event, 'title')
+    )
+    user_username = fields.Field(
+        column_name='user_username',
+        attribute='user',
+        widget=ForeignKeyWidget(User, 'username')
+    )
+    user_email = fields.Field(
+        column_name='user_email',
+        attribute='user',
+        widget=ForeignKeyWidget(User, 'email')
+    )
+    user_first_name = fields.Field(
+        column_name='user_first_name',
+        attribute='user',
+        widget=ForeignKeyWidget(User, 'first_name')
+    )
+    user_last_name = fields.Field(
+        column_name='user_last_name',
+        attribute='user',
+        widget=ForeignKeyWidget(User, 'last_name')
+    )
+    discount_code = fields.Field(
+        column_name='discount_code',
+        attribute='discount_code',
+        widget=ForeignKeyWidget(DiscountCode, 'code')
+    )
+
+    class Meta:
+        model = Registration
+        fields = (
+            'id',
+            'event',
+            'user_username',
+            'user_email',
+            'user_first_name',
+            'user_last_name',
+            'registered_at',
+            'status',
+            'ticket_id',
+            'discount_code',
+            'discount_amount',
+            'final_price',
+            'created_at',
+            'updated_at',
+            'is_deleted',
+            'deleted_at',
+        )
+        export_order = fields
+
+    def dehydrate_ticket_id(self, obj):
+        """Limit ticket identifiers to eight characters in exports."""
+        val = getattr(obj, 'ticket_id', '')
+        return str(val)[:8] if val else ''

backend/events/tasks.py

@@ -0,0 +1,584 @@
+from django.core.mail import EmailMultiAlternatives
+from django.template.loader import render_to_string
+from django.utils.html import strip_tags
+from django.conf import settings
+from django.utils import timezone
+
+from celery import shared_task, group
+from celery.exceptions import SoftTimeLimitExceeded
+import markdown
+import logging
+
+from users.models import User
+from events.models import Event, Registration, EventEmailLog
+from utils.templatetags.jalali import fa_digits, jdate
+
+
+logger = logging.getLogger(__name__)
+ANNOUNCEMENT_TASK_SOFT_LIMIT_SECONDS = 30
+ANNOUNCEMENT_TASK_HARD_LIMIT_SECONDS = 45
+
+@shared_task(bind=True, max_retries=3)
+def send_registration_confirmation_email(self, registration_pk: str):
+    """Send a registration confirmation email, loading the model lazily to avoid circular imports."""
+    try:
+        from .models import Registration
+        reg = (
+            Registration.objects
+            .select_related("event", "user")
+            .get(pk=registration_pk)
+        )
+
+        user_email = getattr(reg.user, "email", None)
+        if not user_email:
+            return
+
+        success_md = reg.event.registration_success_markdown or ""
+        success_html = markdown.markdown(
+            success_md,
+            extensions=["extra", "sane_lists", "toc"]
+        ) if success_md else ""
+
+        context = {
+            "user": reg.user,
+            "event": reg.event,
+            "registration": reg,
+            "success_html": success_html,
+        }
+
+        subject = f"تأیید ثبت‌نام شما در {reg.event.title}"
+        html_body = render_to_string("emails/event_registration_confirmation.html", context)
+        plain_body = strip_tags(html_body)
+
+        message = EmailMultiAlternatives(
+            subject=subject,
+            body=plain_body,
+            from_email=getattr(settings, "DEFAULT_FROM_EMAIL", None),
+            to=[user_email],
+        )
+        message.attach_alternative(html_body, "text/html")
+        message.send(fail_silently=False)
+        logger.info(f"Event Confirm Registration email sent to {reg.user.email}")
+
+    except Exception as exc:
+        logger.error(f"Failed to send event registration email: {exc}")
+        raise self.retry(exc=exc, countdown=60)        
+
+
+@shared_task(bind=True, max_retries=3)
+def send_registration_cancellation_email(self, registration_pk: str):
+    try:
+        from .models import Registration
+        reg = (
+            Registration.objects
+            .select_related("event", "user")
+            .get(pk=registration_pk)
+        )
+
+        user_email = getattr(reg.user, "email", None)
+        if not user_email:
+            return
+
+        context = {
+            "user": reg.user,
+            "event": reg.event,
+            "registration": reg,
+        }
+
+        subject = f"لغو ثبت‌نام شما در {reg.event.title}"
+        html_body = render_to_string("emails/event_registration_cancellation.html", context)
+        plain_body = strip_tags(html_body)
+
+        message = EmailMultiAlternatives(
+            subject=subject,
+            body=plain_body,
+            from_email=getattr(settings, "DEFAULT_FROM_EMAIL", None),
+            to=[user_email],
+        )
+        message.attach_alternative(html_body, "text/html")
+        message.send(fail_silently=False)
+        logger.info(f"Event Confirm Registration email sent to {reg.user.email}")
+
+    except Exception as exc:
+        logger.error(f"Failed to send event registration email: {exc}")
+        raise self.retry(exc=exc, countdown=60)
+
+
+def _event_recipients(event, statuses=None, only_verified=True):
+    qs = Registration.objects.filter(event=event, is_deleted=False)
+    if statuses:
+        qs = qs.filter(status__in=statuses)
+    if only_verified:
+        qs = qs.filter(user__is_email_verified=True)
+
+    qs = qs.exclude(user__email__isnull=True).exclude(user__email="")
+    return qs.select_related("user")
+
+
+def _send_html_email(subject, html_body, to_email):
+    text_body = strip_tags(html_body)
+    msg = EmailMultiAlternatives(
+        subject=subject,
+        body=text_body,
+        from_email=getattr(settings, "DEFAULT_FROM_EMAIL", None),
+        to=[to_email],
+    )
+    msg.attach_alternative(html_body, "text/html")
+    msg.send()
+
+
+def _build_email_context(*parts):
+    values = [str(part) for part in parts if part not in (None, "")]
+    return "|".join(values) if values else None
+
+
+@shared_task(bind=True, autoretry_for=(Exception,), retry_backoff=True, retry_kwargs={"max_retries": 3}, soft_time_limit=60)
+def send_skyroom_credentials_individual_task(self, reg_id: int):
+    """
+    ارسال نام‌کاربری/رمز برای اسکای‌روم
+    - username = user.email
+    - password = registration.ticket_id[:8]
+    - url = event.online_link (اگر لینک در فیلد online_link ذخیره شده باشد)
+    """
+    r = Registration.objects.get(pk=reg_id)
+    event = r.event
+    user = r.user
+    sky_user = user.email.strip().split('@')[0]
+    sky_pass = str(r.ticket_id)[:8]
+    skyroom_url = event.online_link
+    try:
+        ctx = {
+            "user": user,
+            "event": event,
+            "skyroom_url": skyroom_url,
+            "sky_username": sky_user,
+            "sky_password": sky_pass,
+            "event_url": f"{settings.FRONTEND_ROOT}events/{event.slug}",
+        }
+        subject = f"اطلاعات دسترسی اسکای‌روم - {event.title}"
+        html = render_to_string("emails/skyroom_credentials.html", ctx)
+        text_body = strip_tags(html)
+        msg = EmailMultiAlternatives(
+            subject=subject,
+            body=text_body,
+            from_email=getattr(settings, "DEFAULT_FROM_EMAIL", None),
+            to=[user.email],
+        )
+        msg.attach_alternative(html, "text/html")
+        msg.send()
+        logger.info(f'Skyroom Credentials for Event "{event.title}" sent to {user.email}')
+
+    except Exception as exc:
+        logger.error(f"Failed to send skyroom credentials email: {exc}")
+        raise self.retry(exc=exc, countdown=60)
+
+
+@shared_task(bind=True)
+def send_event_reminder_task(self, event_id: int):
+    """
+    یادآوری رویداد (ارسال الان؛ برای ارسال خودکار یک روز قبل، یک beat job بسازید)
+    """
+    event = Event.objects.get(pk=event_id)
+    regs = (
+        _event_recipients(event, statuses=["confirmed", "attended"])
+        .select_related("user", "event")
+        .distinct()
+    )
+    reg_ids = list(regs.values_list("id", flat=True))
+
+    job = group(send_event_reminder_to_user.s(event_id, rid) for rid in reg_ids)
+    res = job.apply_async()
+
+    logger.info(
+        'Queued %s event reminder emails for event "%s" (group_id=%s)',
+        len(reg_ids),
+        event.title,
+        res.id,
+    )
+    return {"event_id": event_id, "queued": len(reg_ids), "group_id": res.id}
+
+
+@shared_task(
+    bind=True,
+    autoretry_for=(Exception,),
+    retry_backoff=True,
+    retry_jitter=True,
+    retry_kwargs={"max_retries": 3},
+    soft_time_limit=ANNOUNCEMENT_TASK_SOFT_LIMIT_SECONDS,
+    time_limit=ANNOUNCEMENT_TASK_HARD_LIMIT_SECONDS,
+)
+def send_event_reminder_to_user(self, event_id: int, registration_id: int):
+    """
+    Send reminder email to a single registration; safe to retry without duplicating emails.
+    """
+    user = None
+    log = None
+
+    try:
+        r = Registration.objects.select_related("user", "event").get(pk=registration_id)
+        user = r.user
+        event = r.event
+
+        to_email = (user.email or "").strip()
+        if not to_email:
+            return {"skipped": True, "status": "no_email"}
+
+        context_key = _build_email_context(
+            "event_reminder",
+            event.slug or event.id,
+            event.start_time,
+        )
+        log, skip = EventEmailLog.claim(
+            event_id=event_id,
+            user_id=user.id,
+            kind=EventEmailLog.KIND_EVENT_REMINDER,
+            context=context_key,
+        )
+        if skip:
+            return {"skipped": True, "status": log.status}
+
+        ctx = {
+            "user": user,
+            "event": event,
+            "event_url": f"{settings.FRONTEND_ROOT}events/{event.slug}",
+        }
+
+        subject = f"یادآوری رویداد: {event.title}"
+        html = render_to_string("emails/event_reminder.html", ctx)
+        text_body = strip_tags(html)
+        msg = EmailMultiAlternatives(
+            subject=subject,
+            body=text_body,
+            from_email=getattr(settings, "DEFAULT_FROM_EMAIL", None),
+            to=[to_email],
+        )
+        msg.attach_alternative(html, "text/html")
+        msg.send()
+
+        log.mark_sent()
+        logger.info('Event reminder for "%s" sent to %s', event.title, to_email)
+        return f"Email sent to {to_email}"
+
+    except SoftTimeLimitExceeded:
+        if log:
+            log.mark_failed("Soft time limit exceeded")
+        logger.warning(
+            "Soft time limit exceeded (event_id=%s, registration_id=%s)",
+            event_id,
+            registration_id,
+        )
+        raise
+
+    except Exception as exc:
+        if log:
+            log.mark_failed(str(exc))
+        logger.error(
+            "Failed to send event reminder email: %s", exc, exc_info=True
+        )
+        raise
+
+
+@shared_task(bind=True)
+def queue_event_announcement(self, event_id: int, subject: str, body_html: str, statuses=None):
+    """
+    تسک مادر: ثبت‌نام‌های هدف را پیدا می‌کند و برای هر Registration یک تسک کوچک می‌سازد.
+    """
+    event = Event.objects.get(pk=event_id)
+
+    # محدوده مخاطبان: اگر statuses داده نشد، همان پیش‌فرض قبلی شما
+    statuses = statuses or ["confirmed", "attended", "pending"]
+
+    regs = (
+        _event_recipients(event, statuses=statuses)
+        .select_related("user", "event")
+        .exclude(user__email__isnull=True)
+        .exclude(user__email="")
+        .distinct()
+    )
+
+    reg_ids = list(regs.values_list("id", flat=True))
+
+    # ساخت group از تسک‌های کوچک؛ هر کدام فقط یک ایمیل ارسال می‌کند
+    job = group(
+        send_event_announcement_to_user.s(event_id, rid, subject, body_html)
+        for rid in reg_ids
+    )
+
+    # اگر نتیجه‌ها لازم نیست: CELERY_TASK_IGNORE_RESULT = True
+    res = job.apply_async()
+    logger.info(
+        'Queued %s event-announcement emails for event "%s" (group_id=%s)',
+        len(reg_ids), event.title, res.id
+    )
+    return {"event_id": event_id, "queued": len(reg_ids), "group_id": res.id}
+
+@shared_task(
+    bind=True,
+    autoretry_for=(Exception,),
+    retry_backoff=True,
+    retry_jitter=True,
+    retry_kwargs={"max_retries": 3},
+    soft_time_limit=ANNOUNCEMENT_TASK_SOFT_LIMIT_SECONDS,
+    time_limit=ANNOUNCEMENT_TASK_HARD_LIMIT_SECONDS,
+)
+def send_event_announcement_to_user(self, event_id: int, registration_id: int, subject: str, body_html: str):
+    """
+    تسک کوچک و اتمی: ارسال ایمیل اعلان رویداد برای یک Registration.
+    با لاگ ایدمپوتنسی تا ارسال تکراری نداشته باشیم.
+    """
+    user = None
+    log = None
+
+    try:
+        # از Registration می‌گیریم تا یک کوئری کمتر به Event بزنیم
+        r = Registration.objects.select_related("user", "event").get(pk=registration_id)
+        user = r.user
+        event = r.event
+
+        context_key = _build_email_context(
+            "event_announcement3",
+            event.slug or event.id,
+            subject,
+            body_html,
+        )
+        log, skip = EventEmailLog.claim(
+            event_id=event_id,
+            user_id=user.id,
+            kind=EventEmailLog.KIND_EVENT_ANNOUNCEMENT3,
+            context=context_key,
+        )
+        if skip:
+            return {"skipped": True, "status": log.status}
+
+        # کانتکست رندر ایمیل: body_html مستقیم داخل تمپلیت شما اینجکت می‌شود
+        ctx = {
+            "user": user,
+            "event": event,
+            "body_html": body_html,
+            "event_url": f"{settings.FRONTEND_ROOT}events/{event.slug}",
+        }
+
+        html = render_to_string("emails/event_announcement.html", ctx)
+        text_body = strip_tags(html)
+
+        msg = EmailMultiAlternatives(
+            subject=subject,
+            body=text_body,
+            from_email=getattr(settings, "DEFAULT_FROM_EMAIL", None),
+            to=[user.email],
+        )
+        msg.attach_alternative(html, "text/html")
+        msg.send()
+
+        log.mark_sent()
+
+        logger.info('Event announcement for "%s" sent to %s', event.title, user.email)
+        return f"Email sent to {user.email}"
+
+    except SoftTimeLimitExceeded:
+        if log:
+            log.mark_failed("Soft time limit exceeded")
+        logger.warning("Soft time limit exceeded (event_id=%s, registration_id=%s)", event_id, registration_id)
+        raise
+
+    except Exception as exc:
+        if log:
+            log.mark_failed(str(exc))
+        logger.error("Failed to send event announcement email: %s", exc, exc_info=True)
+        raise
+
+
+def _event_url(event):
+    root = getattr(settings, "FRONTEND_ROOT", "/")
+    slug_or_id = getattr(event, "slug", None) or event.id
+    return f"{root}events/{slug_or_id}"
+
+@shared_task(bind=True)
+def queue_invites_to_non_registered_users(self, event_id: int, only_verified=True, only_active=True):
+    """
+    تسک مادر: فقط کاربرها را پیدا می‌کند و برای هر نفر یک تسک کوچک می‌سازد.
+    """
+    event = Event.objects.get(pk=event_id)
+
+    qs = User.objects.all()
+    if only_verified:
+        qs = qs.filter(is_email_verified=True)
+    if only_active:
+        qs = qs.filter(is_active=True)
+
+    # کسانی که برای این ایونت ثبت‌نام نکرده‌اند
+    qs = qs.exclude(event_registrations__event_id=event_id) \
+           .exclude(email__isnull=True).exclude(email="") \
+           .distinct()
+
+    user_ids = list(qs.values_list("id", flat=True))
+
+    # گَروهِ تسک‌های کوچک
+    job = group(send_invite_to_user.s(event_id, uid) for uid in user_ids)
+    res = job.apply_async()
+    return {"event_id": event_id, "queued": len(user_ids), "group_id": res.id}
+
+@shared_task(bind=True, autoretry_for=(Exception,), retry_backoff=True, retry_jitter=True, retry_kwargs={"max_retries": 3}, time_limit=60)
+def send_invite_to_user(self, event_id: int, user_id: int):
+    """
+    تسک کوچک و اتمی: برای هر کاربر حداکثر یک ایمیل می‌فرستد (با لاگ ایدمپوتنسی).
+    """
+    event = Event.objects.get(pk=event_id)
+    user = User.objects.get(pk=user_id)
+
+    # ساخت محتوا
+    context = {
+        "user": user,
+        "event": event,
+        "event_url": _event_url(event),
+        "start_time": fa_digits(jdate(event.start_time))
+    }
+    # ایدمپوتنسی: اگر قبلاً این ایمیل رزرو/ارسال شده، Skip
+    subject = f"دعوت به شرکت در «{event.title}»"
+    text_body = render_to_string("emails/event_invite_non_registered.txt", context)
+    html_body = render_to_string("emails/event_invite_non_registered.html", context)
+    context_key = _build_email_context(
+        "invite_non_registered",
+        event.slug or event.id,
+        html_body,
+    )
+    log, skip = EventEmailLog.claim(
+        event_id=event_id,
+        user_id=user_id,
+        kind=EventEmailLog.KIND_INVITE_NON_REGISTERED,
+        context=context_key,
+    )
+    if skip:
+        return {"skipped": True, "status": log.status}
+
+    try:
+        msg = EmailMultiAlternatives(
+            subject=subject,
+            body=text_body,
+            from_email=settings.DEFAULT_FROM_EMAIL,
+            to=[user.email],
+        )
+        msg.attach_alternative(html_body, "text/html")
+        msg.send()
+
+        log.mark_sent()
+        return f"Email sent to {user.email}"
+    except Exception as exc:
+        log.mark_failed(str(exc))
+        raise
+
+
+@shared_task(bind=True)
+def queue_skyroom_credentials(self, event_id: int):
+    """
+    تسک مادر: ثبت‌نام‌های تاییدشده را پیدا می‌کند و برای هر Registration یک تسک کوچک می‌سازد.
+    """
+    event = Event.objects.get(pk=event_id)
+
+    # فقط CONFIRMED ها + ایمیل معتبر
+    regs = (
+        _event_recipients(event, statuses=[Registration.StatusChoices.CONFIRMED])
+        .select_related("user", "event")
+        .exclude(user__email__isnull=True)
+        .exclude(user__email="")
+        .distinct()
+    )
+
+    reg_ids = list(regs.values_list("id", flat=True))
+
+    # ساخت group از تسک‌های کوچک؛ هر کدوم فقط یک ایمیل ارسال می‌کنند
+    job = group(send_skyroom_credentials_to_user.s(event_id, rid) for rid in reg_ids)
+
+    # توصیه: اگر نتیجه‌ها را لازم ندارید، در تنظیمات CELERY_TASK_IGNORE_RESULT=True بگذارید
+    res = job.apply_async()
+    logger.info(
+        'Queued %s Skyroom-credential emails for event "%s" (group_id=%s)',
+        len(reg_ids), event.title, res.id
+    )
+    return {"event_id": event_id, "queued": len(reg_ids), "group_id": res.id}
+
+
+@shared_task(
+    bind=True,
+    autoretry_for=(Exception,),
+    retry_backoff=True,
+    retry_jitter=True,
+    retry_kwargs={"max_retries": 3},
+    soft_time_limit=ANNOUNCEMENT_TASK_SOFT_LIMIT_SECONDS,
+    time_limit=ANNOUNCEMENT_TASK_HARD_LIMIT_SECONDS,
+)
+def send_skyroom_credentials_to_user(self, event_id: int, registration_id: int):
+    """
+    تسک کوچک و اتمی: ارسال نام‌کاربری/رمز اسکای‌روم برای یک Registration.
+    با لاگ ایدمپوتنسی تا ارسال تکراری نداشته باشیم.
+    """
+    user = None
+    log = None
+
+    try:
+        r = Registration.objects.select_related("user", "event").get(pk=registration_id)
+        user = r.user
+        event = r.event
+
+        # ساخت یوزرنیم/پسورد
+        sky_username = (user.email or "").strip().split("@")[0]
+        sky_password = str(r.ticket_id or "")[:8]
+        skyroom_url = event.online_link
+
+        context_key = _build_email_context(
+            "skyroom_credentials",
+            event.slug or event.id,
+            sky_username,
+            sky_password,
+            skyroom_url,
+        )
+        log, skip = EventEmailLog.claim(
+            event_id=event_id,
+            user_id=user.id,
+            kind=EventEmailLog.KIND_SKYROOM_CREDENTIALS,
+            context=context_key,
+        )
+        if skip:
+            return {"skipped": True, "status": log.status}
+
+        ctx = {
+            "user": user,
+            "event": event,
+            "skyroom_url": skyroom_url,
+            "sky_username": sky_username,
+            "sky_password": sky_password,
+            "event_url": f"{settings.FRONTEND_ROOT}events/{event.slug}",
+        }
+
+        subject = f"اطلاعات دسترسی اسکای‌روم - {event.title}"
+        html = render_to_string("emails/skyroom_credentials.html", ctx)
+        text_body = strip_tags(html)
+
+        msg = EmailMultiAlternatives(
+            subject=subject,
+            body=text_body,
+            from_email=getattr(settings, "DEFAULT_FROM_EMAIL", None),
+            to=[user.email],
+        )
+        msg.attach_alternative(html, "text/html")
+        msg.send()
+
+        log.mark_sent()
+
+        logger.info('Skyroom credentials for "%s" sent to %s', event.title, user.email)
+        return f"Email sent to {user.email}"
+
+    except SoftTimeLimitExceeded as exc:
+        # ثبت خطا و اجازه به Celery برای retry خودکار
+        if log:
+            log.mark_failed("Soft time limit exceeded")
+        logger.warning(
+            "Soft time limit exceeded for event_id=%s, registration_id=%s", event_id, registration_id
+        )
+        raise
+
+    except Exception as exc:
+        if log:
+            log.mark_failed(str(exc))
+        logger.error("Failed to send skyroom credentials email: %s", exc, exc_info=True)
+        raise

backend/gallery/admin.py

@@ -0,0 +1,89 @@
+from django.contrib import admin
+from django.utils.html import format_html
+
+from import_export.admin import ImportExportModelAdmin
+
+from gallery.models import Gallery
+from gallery.resources import GalleryResource
+from utils.admin import SoftDeleteListFilter, BaseModelAdmin
+
+@admin.register(Gallery)
+class GalleryAdmin(BaseModelAdmin, ImportExportModelAdmin):
+    resource_class = GalleryResource
+    list_display = ('title', 'image_preview', 'uploaded_by', 'file_size_display', 'dimensions', 'is_public', 'created_at')
+    list_filter = ('is_public', 'created_at', SoftDeleteListFilter)
+    search_fields = ('title', 'description', 'alt_text')
+    readonly_fields = ('uploaded_by', 'file_size', 'width', 'height', 'image_preview_large', 'markdown_url')
+    
+    fieldsets = (
+        ('Image Info', {
+            'fields': ('title', 'description', 'image', 'alt_text', 'is_public')
+        }),
+        ('Uploader', {
+            'fields': ('uploaded_by',),
+            'classes': ('collapse',)
+        }),
+        ('Metadata', {
+            'fields': ('file_size', 'width', 'height'),
+            'classes': ('collapse',)
+        }),
+        ('Preview & Usage', {
+            'fields': ('image_preview_large', 'markdown_url'),
+            'classes': ('collapse',)
+        }),
+        ('Soft Delete', {
+            'fields': ('is_deleted', 'deleted_at'),
+            'classes': ('collapse',)
+        }),
+    )
+    
+    actions = BaseModelAdmin.actions + ['make_public', 'make_private', 'restore_images']
+    
+    def image_preview(self, obj):
+        if obj.image:
+            return format_html(
+                '<img src="{}" style="width: 50px; height: 50px; object-fit: cover; border-radius: 4px;" />',
+                obj.image.url
+            )
+        return "No Image"
+    image_preview.short_description = "Preview"
+    
+    def image_preview_large(self, obj):
+        if obj.image:
+            return format_html(
+                '<img src="{}" style="max-width: 300px; max-height: 300px; object-fit: contain;" />',
+                obj.image.url
+            )
+        return "No Image"
+    image_preview_large.short_description = "Image Preview"
+    
+    def file_size_display(self, obj):
+        return f"{obj.file_size_mb} MB" if obj.file_size else "Unknown"
+    file_size_display.short_description = "File Size"
+    
+    def dimensions(self, obj):
+        if obj.width and obj.height:
+            return f"{obj.width} × {obj.height}"
+        return "Unknown"
+    dimensions.short_description = "Dimensions"
+    
+    def make_public(self, request, queryset):
+        queryset.update(is_public=True)
+        self.message_user(request, f"Made {queryset.count()} images public.")
+    make_public.short_description = "Make selected images public"
+    
+    def make_private(self, request, queryset):
+        queryset.update(is_public=False)
+        self.message_user(request, f"Made {queryset.count()} images private.")
+    make_private.short_description = "Make selected images private"
+    
+    def restore_images(self, request, queryset):
+        for image in queryset:
+            image.restore()
+        self.message_user(request, f"Restored {queryset.count()} images.")
+    restore_images.short_description = "Restore selected images"
+
+    def save_model(self, request, obj, form, change):
+        if not obj.uploaded_by_id:
+            obj.uploaded_by = request.user
+        super().save_model(request, obj, form, change)

backend/gallery/apps.py

@@ -0,0 +1,5 @@
+from django.apps import AppConfig
+
+class GalleryConfig(AppConfig):
+    default_auto_field = 'django.db.models.BigAutoField'
+    name = 'gallery'

backend/gallery/fixtures/gallery.json

@@ -0,0 +1,218 @@
+[
+  {
+    "model": "gallery.gallery",
+    "pk": 1,
+    "fields": {
+      "created_at": "2024-01-15T10:30:00Z",
+      "updated_at": "2024-01-15T10:30:00Z",
+      "is_deleted": false,
+      "title": "کارگاه یادگیری ماشین - تصویر ۱",
+      "description": "شرکت‌کنندگان در حال یادگیری مفاهیم یادگیری ماشین",
+      "image": "gallery/ml_workshop_1.jpg",
+      "uploaded_by": 1,
+      "alt_text": "دانشجویان در کارگاه یادگیری ماشین",
+      "file_size": 2048000,
+      "width": 1920,
+      "height": 1080,
+      "is_public": true
+    }
+  },
+  {
+    "model": "gallery.gallery",
+    "pk": 2,
+    "fields": {
+      "created_at": "2024-01-20T14:15:00Z",
+      "updated_at": "2024-01-20T14:15:00Z",
+      "is_deleted": false,
+      "title": "مسابقه برنامه‌نویسی - لحظه اعلام نتایج",
+      "description": "اعلام نتایج مسابقه برنامه‌نویسی و اهدای جوایز",
+      "image": "gallery/programming_contest_results.jpg",
+      "uploaded_by": 2,
+      "alt_text": "اهدای جوایز مسابقه برنامه‌نویسی",
+      "file_size": 1536000,
+      "width": 1600,
+      "height": 900,
+      "is_public": true
+    }
+  },
+  {
+    "model": "gallery.gallery",
+    "pk": 3,
+    "fields": {
+      "created_at": "2024-01-25T09:45:00Z",
+      "updated_at": "2024-01-25T09:45:00Z",
+      "is_deleted": false,
+      "title": "سمینار امنیت سایبری",
+      "description": "دکتر رضایی در حال ارائه مطالب امنیت سایبری",
+      "image": "gallery/cybersecurity_seminar.jpg",
+      "uploaded_by": 5,
+      "alt_text": "سخنرانی در سمینار امنیت سایبری",
+      "file_size": 1792000,
+      "width": 1800,
+      "height": 1200,
+      "is_public": true
+    }
+  },
+  {
+    "model": "gallery.gallery",
+    "pk": 4,
+    "fields": {
+      "created_at": "2024-02-01T16:20:00Z",
+      "updated_at": "2024-02-01T16:20:00Z",
+      "is_deleted": false,
+      "title": "کارگاه React.js - کدنویسی عملی",
+      "description": "شرکت‌کنندگان در حال کدنویسی با React.js",
+      "image": "gallery/react_workshop_coding.jpg",
+      "uploaded_by": 9,
+      "alt_text": "کدنویسی در کارگاه React.js",
+      "file_size": 2304000,
+      "width": 2048,
+      "height": 1152,
+      "is_public": true
+    }
+  },
+  {
+    "model": "gallery.gallery",
+    "pk": 5,
+    "fields": {
+      "created_at": "2024-02-05T11:30:00Z",
+      "updated_at": "2024-02-05T11:30:00Z",
+      "is_deleted": false,
+      "title": "بازدید از دیجی‌کالا - ورودی شرکت",
+      "description": "دانشجویان در ورودی شرکت دیجی‌کالا",
+      "image": "gallery/digikala_visit_entrance.jpg",
+      "uploaded_by": 3,
+      "alt_text": "بازدید از شرکت دیجی‌کالا",
+      "file_size": 1920000,
+      "width": 1920,
+      "height": 1280,
+      "is_public": true
+    }
+  },
+  {
+    "model": "gallery.gallery",
+    "pk": 6,
+    "fields": {
+      "created_at": "2024-02-10T22:45:00Z",
+      "updated_at": "2024-02-10T22:45:00Z",
+      "is_deleted": false,
+      "title": "هکاتون هوش مصنوعی - شب اول",
+      "description": "تیم‌ها در حال کار شبانه روزی در هکاتون",
+      "image": "gallery/ai_hackathon_night.jpg",
+      "uploaded_by": 6,
+      "alt_text": "کار شبانه در هکاتون هوش مصنوعی",
+      "file_size": 1664000,
+      "width": 1600,
+      "height": 1067,
+      "is_public": true
+    }
+  },
+  {
+    "model": "gallery.gallery",
+    "pk": 7,
+    "fields": {
+      "created_at": "2024-02-15T13:10:00Z",
+      "updated_at": "2024-02-15T13:10:00Z",
+      "is_deleted": false,
+      "title": "سمینار کارآفرینی - پنل بحث",
+      "description": "پنل بحث با کارآفرینان موفق فناوری",
+      "image": "gallery/entrepreneurship_panel.jpg",
+      "uploaded_by": 1,
+      "alt_text": "پنل بحث کارآفرینی فناوری",
+      "file_size": 2176000,
+      "width": 1920,
+      "height": 1080,
+      "is_public": true
+    }
+  },
+  {
+    "model": "gallery.gallery",
+    "pk": 8,
+    "fields": {
+      "created_at": "2024-02-20T15:25:00Z",
+      "updated_at": "2024-02-20T15:25:00Z",
+      "is_deleted": false,
+      "title": "کارگاه DevOps - آموزش Docker",
+      "description": "آموزش عملی Docker و کانتینرها",
+      "image": "gallery/devops_docker_training.jpg",
+      "uploaded_by": 8,
+      "alt_text": "آموزش Docker در کارگاه DevOps",
+      "file_size": 1856000,
+      "width": 1728,
+      "height": 1152,
+      "is_public": true
+    }
+  },
+  {
+    "model": "gallery.gallery",
+    "pk": 9,
+    "fields": {
+      "created_at": "2024-02-25T12:40:00Z",
+      "updated_at": "2024-02-25T12:40:00Z",
+      "is_deleted": false,
+      "title": "مسابقه طراحی UI/UX - آثار شرکت‌کنندگان",
+      "description": "نمایش آثار طراحی شده توسط شرکت‌کنندگان",
+      "image": "gallery/uiux_contest_designs.jpg",
+      "uploaded_by": 12,
+      "alt_text": "آثار مسابقه طراحی UI/UX",
+      "file_size": 2048000,
+      "width": 2048,
+      "height": 1365,
+      "is_public": true
+    }
+  },
+  {
+    "model": "gallery.gallery",
+    "pk": 10,
+    "fields": {
+      "created_at": "2024-03-01T17:55:00Z",
+      "updated_at": "2024-03-01T17:55:00Z",
+      "is_deleted": false,
+      "title": "نشست فارغ‌التحصیلان - عکس گروهی",
+      "description": "عکس یادگاری با فارغ‌التحصیلان و دانشجویان فعلی",
+      "image": "gallery/alumni_group_photo.jpg",
+      "uploaded_by": 5,
+      "alt_text": "عکس گروهی نشست فارغ‌التحصیلان",
+      "file_size": 2560000,
+      "width": 2560,
+      "height": 1440,
+      "is_public": true
+    }
+  },
+  {
+    "model": "gallery.gallery",
+    "pk": 11,
+    "fields": {
+      "created_at": "2024-03-05T08:20:00Z",
+      "updated_at": "2024-03-05T08:20:00Z",
+      "is_deleted": false,
+      "title": "آزمایشگاه کامپیوتر - محیط کار",
+      "description": "نمایی از آزمایشگاه کامپیوتر دانشکده",
+      "image": "gallery/computer_lab.jpg",
+      "uploaded_by": 9,
+      "alt_text": "آزمایشگاه کامپیوتر دانشکده",
+      "file_size": 1792000,
+      "width": 1792,
+      "height": 1024,
+      "is_public": true
+    }
+  },
+  {
+    "model": "gallery.gallery",
+    "pk": 12,
+    "fields": {
+      "created_at": "2024-03-10T14:35:00Z",
+      "updated_at": "2024-03-10T14:35:00Z",
+      "is_deleted": false,
+      "title": "کتابخانه دانشکده - بخش کتب فنی",
+      "description": "بخش کتب فنی و مهندسی کامپیوتر کتابخانه",
+      "image": "gallery/library_tech_books.jpg",
+      "uploaded_by": 4,
+      "alt_text": "کتب فنی کتابخانه دانشکده",
+      "file_size": 1536000,
+      "width": 1536,
+      "height": 1024,
+      "is_public": true
+    }
+  }
+]

backend/gallery/migrations/0001_initial.py

@@ -0,0 +1,36 @@
+# Generated by Django 5.2.5 on 2025-10-16 12:07
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    initial = True
+
+    dependencies = [
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='Gallery',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('created_at', models.DateTimeField(auto_now_add=True)),
+                ('updated_at', models.DateTimeField(auto_now=True)),
+                ('is_deleted', models.BooleanField(default=False)),
+                ('deleted_at', models.DateTimeField(blank=True, null=True)),
+                ('title', models.CharField(max_length=200)),
+                ('description', models.TextField(blank=True)),
+                ('image', models.ImageField(upload_to='gallery/')),
+                ('alt_text', models.CharField(blank=True, max_length=200)),
+                ('file_size', models.PositiveIntegerField(blank=True, null=True)),
+                ('width', models.PositiveIntegerField(blank=True, null=True)),
+                ('height', models.PositiveIntegerField(blank=True, null=True)),
+                ('is_public', models.BooleanField(default=True)),
+            ],
+            options={
+                'verbose_name_plural': 'Gallery Images',
+                'ordering': ['-created_at'],
+            },
+        ),
+    ]

backend/gallery/migrations/0002_initial.py

@@ -0,0 +1,23 @@
+# Generated by Django 5.2.5 on 2025-10-16 12:07
+
+import django.db.models.deletion
+from django.conf import settings
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    initial = True
+
+    dependencies = [
+        ('gallery', '0001_initial'),
+        migrations.swappable_dependency(settings.AUTH_USER_MODEL),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='gallery',
+            name='uploaded_by',
+            field=models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='gallery_images', to=settings.AUTH_USER_MODEL),
+        ),
+    ]

backend/gallery/models.py

@@ -0,0 +1,82 @@
+from django.db import models
+from django.conf import settings
+
+from PIL import Image
+
+from utils.models import BaseModel
+
+
+MAX_IMAGE_FILE_SIZE_BYTES = 2 * 1024 * 1024
+
+class Gallery(BaseModel):
+    title = models.CharField(max_length=200)
+    description = models.TextField(blank=True)
+    image = models.ImageField(upload_to='gallery/')
+    uploaded_by = models.ForeignKey(settings.AUTH_USER_MODEL, on_delete=models.CASCADE, related_name='gallery_images')
+    alt_text = models.CharField(max_length=200, blank=True)
+    file_size = models.PositiveIntegerField(null=True, blank=True)
+    width = models.PositiveIntegerField(null=True, blank=True)
+    height = models.PositiveIntegerField(null=True, blank=True)
+    is_public = models.BooleanField(default=True)
+
+    class Meta:
+        ordering = ['-created_at']
+        verbose_name_plural = "Gallery Images"
+
+    def __str__(self):
+        return self.title
+
+    def save(self, *args, **kwargs):
+        super().save(*args, **kwargs)
+        
+        if self.image:
+            # Get file size
+            self.file_size = self.image.size
+            
+            # Get image dimensions
+            with Image.open(self.image.path) as img:
+                self.width, self.height = img.size
+            
+            # Compress image if it's too large
+            self.compress_image()
+            
+            # Update fields without triggering save again
+            Gallery.objects.filter(pk=self.pk).update(
+                file_size=self.file_size,
+                width=self.width,
+                height=self.height
+            )
+
+    def compress_image(self):
+        """Compress image if it's larger than 2MB or dimensions are too large"""
+        if not self.image:
+            return
+            
+        with Image.open(self.image.path) as img:
+            # Convert to RGB if necessary
+            if img.mode in ("RGBA", "P"):
+                img = img.convert("RGB")
+            
+            # Resize if too large
+            max_size = (1920, 1080)
+            if img.size[0] > max_size[0] or img.size[1] > max_size[1]:
+                img.thumbnail(max_size, Image.Resampling.LANCZOS)
+            
+            # Compress if file size is too large
+            quality = 85
+        if self.file_size and self.file_size > MAX_IMAGE_FILE_SIZE_BYTES:
+            quality = 70
+            
+            img.save(self.image.path, "JPEG", quality=quality, optimize=True)
+
+    @property
+    def file_size_mb(self):
+        """Return file size in MB"""
+        if self.file_size:
+            return round(self.file_size / (1024 * 1024), 2)
+        return 0
+
+    @property
+    def markdown_url(self):
+        """Return URL for use in markdown"""
+        return f"![{self.alt_text or self.title}]({settings.BACKEND_ROOT}{self.image.url})"

backend/gallery/resources.py

@@ -0,0 +1,17 @@
+from import_export import resources, fields
+from import_export.widgets import ForeignKeyWidget
+
+from gallery.models import Gallery
+from users.models import User
+
+class GalleryResource(resources.ModelResource):
+    uploaded_by = fields.Field(
+        column_name='uploaded_by',
+        attribute='uploaded_by',
+        widget=ForeignKeyWidget(User, 'username')
+    )
+
+    class Meta:
+        model = Gallery
+        fields = ('id', 'title', 'description', 'image', 'uploaded_by', 
+                 'alt_text', 'file_size', 'width', 'height', 'is_public', 'created_at')

backend/gallery/tasks.py

@@ -0,0 +1,23 @@
+from celery import shared_task
+from PIL import Image
+import logging
+
+logger = logging.getLogger(__name__)
+
+@shared_task
+def process_uploaded_image(gallery_id):
+    """Process uploaded image: compress, resize, extract metadata"""
+    try:
+        from .models import Gallery
+        gallery_item = Gallery.objects.get(id=gallery_id)
+        
+        if gallery_item.image:
+            # This will trigger the compression and metadata extraction
+            gallery_item.compress_image()
+            
+            logger.info(f"Processed image: {gallery_item.title}")
+            return f"Processed image: {gallery_item.title}"
+            
+    except Exception as exc:
+        logger.error(f"Failed to process image: {exc}")
+        raise exc

backend/manage.py

@@ -0,0 +1,22 @@
+#!/usr/bin/env python
+"""Django's command-line utility for administrative tasks."""
+import os
+import sys
+
+
+def main():
+    """Run administrative tasks."""
+    os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'config.settings.development')
+    try:
+        from django.core.management import execute_from_command_line
+    except ImportError as exc:
+        raise ImportError(
+            "Couldn't import Django. Are you sure it's installed and "
+            "available on your PYTHONPATH environment variable? Did you "
+            "forget to activate a virtual environment?"
+        ) from exc
+    execute_from_command_line(sys.argv)
+
+
+if __name__ == '__main__':
+    main()

backend/payments/admin.py

@@ -0,0 +1,83 @@
+from django.contrib import admin
+
+from import_export.admin import ImportExportModelAdmin
+
+from utils.admin import SoftDeleteListFilter, BaseModelAdmin
+from payments.resources import DiscountResource, PaymentResource
+from payments.models import Payment, DiscountCode
+
+
+@admin.register(DiscountCode)
+class DiscountCodeAdmin(BaseModelAdmin, ImportExportModelAdmin):
+    resource_class = DiscountResource
+    
+    list_display = (
+        'code', 'type', 'value', 'is_active', 'starts_at', 'ends_at',
+        'usage_limit_total', 'usage_limit_per_user', 'min_amount', 'is_deleted'
+    )
+    list_filter = (
+        'type', 'is_active', 'starts_at', 'ends_at', 'applicable_events',
+        SoftDeleteListFilter,
+    )
+    search_fields = ('code', )
+    readonly_fields = ('id', 'deleted_at', 'created_at', 'updated_at')
+
+    fieldsets = (
+        ('Discount Code Details', {
+            'fields': ('code', 'type', 'value', 'applicable_events', 'is_active')
+        }),
+        ('Limitations', {
+            'fields': ('starts_at', 'ends_at', 'usage_limit_total', 'usage_limit_per_user', 'min_amount')
+        }),
+        ('Soft Delete', {
+            'fields': ('is_deleted', 'deleted_at'),
+            'classes': ('collapse',)
+        }),
+    )
+
+    readonly_fields = ('deleted_at', )
+
+    actions = BaseModelAdmin.actions + [
+        'deactivate_codes',
+    ]
+
+    @admin.action(description="Deactivate selected discount codes")
+    def deactivate_codes(self, request, queryset):
+        queryset.update(is_active=False)
+        self.message_user(request, f"Deactivate {queryset.count()} discount codes.")
+
+@admin.register(Payment)
+class PaymentAdmin(BaseModelAdmin, ImportExportModelAdmin):
+    resource_class = PaymentResource
+    
+    list_display = (
+        'id', 'user', 'event', 'base_amount', 'discount_code', 'discount_amount', 'amount',
+        'status', 'created_at', 'verified_at', 'is_deleted'
+    )
+    list_filter = (
+        'status', 'event',
+        SoftDeleteListFilter,
+    )
+    search_fields = (
+        'user__email', 'authority', 'ref_id', 'discount_code__code'
+    )
+    readonly_fields = (
+        'user', 'event', 'base_amount', 'discount_code', 'discount_code', 'discount_amount', 'amount', 'authority',
+        'status', 'ref_id', 'card_pan', 'card_hash', 'created_at', 'updated_at', 'deleted_at'
+    )
+
+    fieldsets = (
+        ('Payment Details', {
+            'fields': ('user', 'event', 'status', 'created_at', 'updated_at')
+        }),
+        ('Price Info', {
+            'fields': ('base_amount', 'discount_code', 'discount_amount', 'amount')
+        }),
+        ('Others', {
+            'fields': ('authority', 'ref_id', 'card_pan', 'card_hash')
+        }),
+        ('Soft Delete', {
+            'fields': ('is_deleted', 'deleted_at'),
+            'classes': ('collapse',)
+        }),
+    )

backend/payments/apps.py

@@ -0,0 +1,6 @@
+from django.apps import AppConfig
+
+
+class PaymentsConfig(AppConfig):
+    default_auto_field = 'django.db.models.BigAutoField'
+    name = 'payments'

backend/payments/migrations/0001_initial.py

@@ -0,0 +1,64 @@
+# Generated by Django 5.2.5 on 2025-10-16 12:07
+
+import django.db.models.deletion
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    initial = True
+
+    dependencies = [
+        ('events', '0002_initial'),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='DiscountCode',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('created_at', models.DateTimeField(auto_now_add=True)),
+                ('updated_at', models.DateTimeField(auto_now=True)),
+                ('is_deleted', models.BooleanField(default=False)),
+                ('deleted_at', models.DateTimeField(blank=True, null=True)),
+                ('code', models.CharField(max_length=64, unique=True)),
+                ('type', models.CharField(choices=[('percent', 'Percent'), ('fixed', 'Fixed (IRR)')], default='percent', max_length=10)),
+                ('value', models.PositiveIntegerField()),
+                ('max_discount', models.PositiveIntegerField(blank=True, null=True)),
+                ('is_active', models.BooleanField(default=True)),
+                ('starts_at', models.DateTimeField(blank=True, null=True)),
+                ('ends_at', models.DateTimeField(blank=True, null=True)),
+                ('usage_limit_total', models.PositiveIntegerField(blank=True, null=True)),
+                ('usage_limit_per_user', models.PositiveIntegerField(blank=True, null=True)),
+                ('min_amount', models.PositiveIntegerField(blank=True, null=True)),
+                ('applicable_events', models.ManyToManyField(blank=True, related_name='discount_codes', to='events.event')),
+            ],
+            options={
+                'abstract': False,
+            },
+        ),
+        migrations.CreateModel(
+            name='Payment',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('created_at', models.DateTimeField(auto_now_add=True)),
+                ('updated_at', models.DateTimeField(auto_now=True)),
+                ('is_deleted', models.BooleanField(default=False)),
+                ('deleted_at', models.DateTimeField(blank=True, null=True)),
+                ('base_amount', models.PositiveIntegerField(editable=False)),
+                ('discount_amount', models.PositiveIntegerField(default=0, editable=False)),
+                ('amount', models.PositiveIntegerField(editable=False)),
+                ('authority', models.CharField(blank=True, editable=False, max_length=64, null=True, unique=True)),
+                ('status', models.IntegerField(choices=[(0, 'Initiated'), (1, 'Pending'), (2, 'Paid'), (3, 'Failed'), (4, 'Canceled')], default=0, editable=False)),
+                ('ref_id', models.CharField(blank=True, editable=False, max_length=64, null=True)),
+                ('card_pan', models.CharField(blank=True, editable=False, max_length=32, null=True)),
+                ('card_hash', models.CharField(blank=True, editable=False, max_length=128, null=True)),
+                ('verified_at', models.DateTimeField(blank=True, editable=False, null=True)),
+                ('discount_code', models.ForeignKey(blank=True, editable=False, null=True, on_delete=django.db.models.deletion.PROTECT, related_name='payments', to='payments.discountcode')),
+                ('event', models.ForeignKey(editable=False, on_delete=django.db.models.deletion.PROTECT, related_name='payments', to='events.event')),
+            ],
+            options={
+                'abstract': False,
+            },
+        ),
+    ]

backend/payments/migrations/0002_initial.py

@@ -0,0 +1,23 @@
+# Generated by Django 5.2.5 on 2025-10-16 12:07
+
+import django.db.models.deletion
+from django.conf import settings
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    initial = True
+
+    dependencies = [
+        ('payments', '0001_initial'),
+        migrations.swappable_dependency(settings.AUTH_USER_MODEL),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='payment',
+            name='user',
+            field=models.ForeignKey(editable=False, on_delete=django.db.models.deletion.PROTECT, related_name='payments', to=settings.AUTH_USER_MODEL),
+        ),
+    ]

backend/payments/migrations/0003_payment_registration.py

@@ -0,0 +1,20 @@
+# Generated by Django 4.2.13 on 2025-11-17 13:15
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('events', '0009_registration_discount_amount_and_more'),
+        ('payments', '0002_initial'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='payment',
+            name='registration',
+            field=models.ForeignKey(blank=True, editable=False, null=True, on_delete=django.db.models.deletion.SET_NULL, related_name='payments', to='events.registration'),
+        ),
+    ]