from pathlib import Path

from .env import env, env_bool, env_int, env_list

BASE_DIR = Path(__file__).resolve().parent.parent


DEBUG = env_bool("DJANGO_DEBUG", False)
SECRET_KEY = env("DJANGO_SECRET_KEY")
if not SECRET_KEY:
    if DEBUG:
        SECRET_KEY = "dev-only-spatial-image-enhancer"
    else:
        raise RuntimeError("DJANGO_SECRET_KEY must be set when DJANGO_DEBUG is false.")

ALLOWED_HOSTS = env_list("DJANGO_ALLOWED_HOSTS", "localhost,127.0.0.1,api")
CSRF_TRUSTED_ORIGINS = env_list("DJANGO_CSRF_TRUSTED_ORIGINS", "")

INSTALLED_APPS = [
    "django.contrib.admin",
    "django.contrib.auth",
    "django.contrib.contenttypes",
    "django.contrib.sessions",
    "django.contrib.messages",
    "django.contrib.staticfiles",
    "corsheaders",
    "rest_framework",
    "processing",
]

MIDDLEWARE = [
    "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",
]

ROOT_URLCONF = "enhancer_project.urls"

TEMPLATES = [
    {
        "BACKEND": "django.template.backends.django.DjangoTemplates",
        "DIRS": [],
        "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 = "enhancer_project.wsgi.application"

if env("POSTGRES_HOST"):
    DATABASES = {
        "default": {
            "ENGINE": "django.db.backends.postgresql",
            "NAME": env("POSTGRES_DB", "enhancer"),
            "USER": env("POSTGRES_USER", "enhancer"),
            "PASSWORD": env("POSTGRES_PASSWORD", "enhancer"),
            "HOST": env("POSTGRES_HOST", "db"),
            "PORT": env("POSTGRES_PORT", "5432"),
            "CONN_MAX_AGE": env_int("POSTGRES_CONN_MAX_AGE", 60),
        }
    }
else:
    DATABASES = {
        "default": {
            "ENGINE": "django.db.backends.sqlite3",
            "NAME": BASE_DIR / "db.sqlite3",
        }
    }

LANGUAGE_CODE = "en-us"
TIME_ZONE = "UTC"
USE_I18N = True
USE_TZ = True

STATIC_URL = "static/"
STATIC_ROOT = BASE_DIR / "staticfiles"
MEDIA_URL = "/media/"
MEDIA_ROOT = BASE_DIR / "media"
DEFAULT_AUTO_FIELD = "django.db.models.BigAutoField"

STORAGES = {
    "default": {
        "BACKEND": "django.core.files.storage.FileSystemStorage",
    },
    "staticfiles": {
        "BACKEND": "whitenoise.storage.CompressedManifestStaticFilesStorage",
    },
}

REST_FRAMEWORK = {
    "DEFAULT_RENDERER_CLASSES": ["rest_framework.renderers.JSONRenderer"],
    "DEFAULT_PARSER_CLASSES": [
        "rest_framework.parsers.JSONParser",
        "rest_framework.parsers.MultiPartParser",
        "rest_framework.parsers.FormParser",
    ],
}

CORS_ALLOWED_ORIGINS = env_list("CORS_ALLOWED_ORIGINS", "http://localhost:5173,http://127.0.0.1:5173")
CORS_ALLOW_CREDENTIALS = False

CELERY_BROKER_URL = env("CELERY_BROKER_URL", "redis://redis:6379/0")
CELERY_RESULT_BACKEND = env("CELERY_RESULT_BACKEND", CELERY_BROKER_URL)
CELERY_TASK_TRACK_STARTED = True
CELERY_TASK_TIME_LIMIT = env_int("CELERY_TASK_TIME_LIMIT", 600)

IMAGE_SESSION_TTL_HOURS = env_int("IMAGE_SESSION_TTL_HOURS", 6)
MAX_UPLOAD_MB = env_int("MAX_UPLOAD_MB", 20)
IMAGE_WORKSPACE_MAX_DIMENSION = env_int("IMAGE_WORKSPACE_MAX_DIMENSION", 1400)

SECURE_PROXY_SSL_HEADER = ("HTTP_X_FORWARDED_PROTO", "https")
SECURE_SSL_REDIRECT = env_bool("DJANGO_SECURE_SSL_REDIRECT", not DEBUG)
SESSION_COOKIE_SECURE = env_bool("DJANGO_SESSION_COOKIE_SECURE", not DEBUG)
CSRF_COOKIE_SECURE = env_bool("DJANGO_CSRF_COOKIE_SECURE", not DEBUG)
SECURE_HSTS_SECONDS = env_int("DJANGO_SECURE_HSTS_SECONDS", 0 if DEBUG else 31536000)
SECURE_HSTS_INCLUDE_SUBDOMAINS = env_bool("DJANGO_SECURE_HSTS_INCLUDE_SUBDOMAINS", not DEBUG)
SECURE_HSTS_PRELOAD = env_bool("DJANGO_SECURE_HSTS_PRELOAD", False)
SECURE_CONTENT_TYPE_NOSNIFF = True
X_FRAME_OPTIONS = "DENY"

LOGGING = {
    "version": 1,
    "disable_existing_loggers": False,
    "handlers": {
        "console": {
            "class": "logging.StreamHandler",
        }
    },
    "root": {
        "handlers": ["console"],
        "level": env("DJANGO_LOG_LEVEL", "INFO"),
    },
}