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 = [
    "core",
    "apps.users",
    "apps.notifications",
    "apps.blog",
    "apps.gallery",
    "apps.events",
    "apps.certificates",
    "apps.communications",
    "apps.payments",
]

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 / CSRF Settings
CORS_ALLOWED_ORIGINS = config(
    'CORS_ALLOWED_ORIGINS',
    default='https://east-guilan-ce.ir',
).split(',')
CORS_ALLOW_CREDENTIALS = config('CORS_ALLOW_CREDENTIALS', default=True, cast=bool)
CSRF_TRUSTED_ORIGINS = config(
    'CSRF_TRUSTED_ORIGINS',
    default='https://east-guilan-ce.ir',
).split(',')
CSRF_COOKIE_SECURE = config('CSRF_COOKIE_SECURE', default=True, cast=bool)
SESSION_COOKIE_SECURE = config('SESSION_COOKIE_SECURE', default=True, cast=bool)

# 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_SSL = config('EMAIL_USE_SSL', default=False, cast=bool)
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')

SMS_APIKEY = config('SMS_APIKEY', default='')
SMS_AUTH_OTP_TEMPLATE_ID = config('SMS_AUTH_OTP_TEMPLATE_ID', default='')
SMS_EVENT_CANCELLATION_TEMPLATE_ID = config('SMS_EVENT_CANCELLATION_TEMPLATE_ID', default='')
SMS_EVENT_RESCHEDULE_TEMPLATE_ID = config('SMS_EVENT_RESCHEDULE_TEMPLATE_ID', default='')
SMS_PAYMENT_STATUS_TEMPLATE_ID = config('SMS_PAYMENT_STATUS_TEMPLATE_ID', default='')

# 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 = config('CELERY_BROKER_URL', default=REDIS_URL)
CELERY_RESULT_BACKEND = config('CELERY_RESULT_BACKEND', default=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')
GOOGLE_OAUTH_CLIENT_ID = config('GOOGLE_OAUTH_CLIENT_ID', default='')
GOOGLE_OAUTH_CLIENT_SECRET = config('GOOGLE_OAUTH_CLIENT_SECRET', default='')
GOOGLE_OAUTH_REDIRECT_URI = config('GOOGLE_OAUTH_REDIRECT_URI', default='')
GOOGLE_OAUTH_FRONTEND_CALLBACK_URL = config('GOOGLE_OAUTH_FRONTEND_CALLBACK_URL', default='http://localhost:8080/auth/google/callback')
NOTIFICATIONS_ENABLED = config('NOTIFICATIONS_ENABLED', default=True, cast=bool)
NOTIFICATION_STREAM_TOKEN_LIFETIME_SECONDS = config('NOTIFICATION_STREAM_TOKEN_LIFETIME_SECONDS', default=300, cast=int)
NOTIFICATION_SSE_HEARTBEAT_SECONDS = config('NOTIFICATION_SSE_HEARTBEAT_SECONDS', default=20, cast=int)
NOTIFICATION_SSE_RETRY_MS = config('NOTIFICATION_SSE_RETRY_MS', default=3000, cast=int)
NOTIFICATION_REDIS_CHANNEL_PREFIX = config('NOTIFICATION_REDIS_CHANNEL_PREFIX', default='notif')
NOTIFICATION_RETENTION_DAYS = config('NOTIFICATION_RETENTION_DAYS', default=30, cast=int)
NOTIFICATION_DEFAULT_PAGE_SIZE = config('NOTIFICATION_DEFAULT_PAGE_SIZE', default=20, cast=int)
NOTIFICATION_MAX_PAGE_SIZE = config('NOTIFICATION_MAX_PAGE_SIZE', default=100, cast=int)

BLOG_ASSET_MAX_SIZE_MB = config('BLOG_ASSET_MAX_SIZE_MB', default=50, cast=int)
BLOG_IMAGE_ASSET_MAX_SIZE_MB = config('BLOG_IMAGE_ASSET_MAX_SIZE_MB', default=10, cast=int)

if DATABASES["default"]["ENGINE"] == "django.db.backends.postgresql":
    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 *