import os
from pathlib import Path

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

SECRET_KEY = os.environ["SECRET_KEY"]

INSTALLED_APPS = [
    "django.contrib.admin",
    "django.contrib.auth",
    "django.contrib.contenttypes",
    "django.contrib.sessions",
    "django.contrib.messages",
    "django.contrib.staticfiles",
    "django.contrib.gis",
    # Third-party
    "rest_framework",
    "rest_framework_gis",
    "corsheaders",
    "mozilla_django_oidc",
    "django_celery_results",
    "django_celery_beat",
    "storages",
    # Apps
    "apps.users",
    "apps.splats",
    "apps.challenges",
    "apps.jobs",
]

MIDDLEWARE = [
    "django.middleware.security.SecurityMiddleware",
    "corsheaders.middleware.CorsMiddleware",
    "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 = "config.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 = "config.wsgi.application"

DATABASES = {
    "default": {
        "ENGINE": "django.contrib.gis.db.backends.postgis",
        "NAME": os.environ.get("POSTGRES_DB", "splatmap"),
        "USER": os.environ.get("POSTGRES_USER", "splatmap"),
        "PASSWORD": os.environ.get("POSTGRES_PASSWORD", "splatmap"),
        "HOST": os.environ.get("POSTGRES_HOST", "db"),
        "PORT": os.environ.get("POSTGRES_PORT", "5432"),
    }
}

AUTH_USER_MODEL = "users.User"

AUTHENTICATION_BACKENDS = [
    "mozilla_django_oidc.auth.OIDCAuthenticationBackend",
]

# Authentik OIDC
_OIDC_BASE = os.environ.get("OIDC_OP_BASE_URL", "")
OIDC_RP_CLIENT_ID = os.environ.get("OIDC_RP_CLIENT_ID", "")
OIDC_RP_CLIENT_SECRET = os.environ.get("OIDC_RP_CLIENT_SECRET", "")
OIDC_OP_AUTHORIZATION_ENDPOINT = f"{_OIDC_BASE}/authorize/"
OIDC_OP_TOKEN_ENDPOINT = f"{_OIDC_BASE}/token/"
OIDC_OP_USER_ENDPOINT = f"{_OIDC_BASE}/userinfo/"
OIDC_OP_JWKS_ENDPOINT = f"{_OIDC_BASE}/jwks/"
OIDC_RP_SIGN_ALGO = "RS256"
OIDC_STORE_ACCESS_TOKEN = True
OIDC_STORE_ID_TOKEN = True

REST_FRAMEWORK = {
    "DEFAULT_AUTHENTICATION_CLASSES": [
        "mozilla_django_oidc.contrib.drf.OIDCAuthentication",
    ],
    "DEFAULT_PERMISSION_CLASSES": [
        "rest_framework.permissions.IsAuthenticated",
    ],
    "DEFAULT_PAGINATION_CLASS": "rest_framework.pagination.CursorPagination",
    "PAGE_SIZE": 50,
}

# Celery
CELERY_BROKER_URL = os.environ.get("CELERY_BROKER_URL", "redis://redis:6379/0")
CELERY_RESULT_BACKEND = "django-db"
CELERY_CACHE_BACKEND = "django-cache"
CELERY_ACCEPT_CONTENT = ["json"]
CELERY_TASK_SERIALIZER = "json"
CELERY_RESULT_SERIALIZER = "json"
CELERY_TIMEZONE = "UTC"
CELERY_TASK_ROUTES = {
    "apps.jobs.tasks.*": {"queue": "splat_jobs"},
    "apps.challenges.tasks.*": {"queue": "default"},
}

# Wasabi / S3
DEFAULT_FILE_STORAGE = "storages.backends.s3boto3.S3Boto3Storage"
AWS_ACCESS_KEY_ID = os.environ.get("AWS_ACCESS_KEY_ID", "")
AWS_SECRET_ACCESS_KEY = os.environ.get("AWS_SECRET_ACCESS_KEY", "")
AWS_STORAGE_BUCKET_NAME = os.environ.get("AWS_STORAGE_BUCKET_NAME", "splatmap")
AWS_S3_ENDPOINT_URL = os.environ.get("AWS_S3_ENDPOINT_URL", "https://s3.wasabisys.com")
AWS_S3_REGION_NAME = os.environ.get("AWS_S3_REGION_NAME", "us-east-1")
AWS_S3_FILE_OVERWRITE = False
AWS_DEFAULT_ACL = "private"
AWS_S3_SIGNATURE_VERSION = "s3v4"
AWS_PRESIGNED_EXPIRY = 3600  # seconds

# Firebase
FIREBASE_CREDENTIALS_FILE = os.environ.get("FIREBASE_CREDENTIALS_FILE", "")

# RunPod
RUNPOD_API_KEY = os.environ.get("RUNPOD_API_KEY", "")
RUNPOD_ENDPOINT_ID = os.environ.get("RUNPOD_ENDPOINT_ID", "")

# Webhook authentication secret — sent by RunPod in X-Webhook-Secret header
WEBHOOK_SECRET = os.environ.get("WEBHOOK_SECRET", "")

# Public base URL of this API — sent to RunPod so it can call back
API_BASE_URL = os.environ.get("API_BASE_URL", "http://localhost:8000")

# Cloudflare CDN prefix in front of Wasabi — used for preview image URLs
CDN_BASE_URL = os.environ.get("CDN_BASE_URL", "")

# Minimum number of frames required in capture_metadata to attempt reconstruction
MIN_CAPTURE_FRAMES = 100

# Thresholds for the quality gate after splatting pipeline completes.
# A splat only gets is_published=True if it passes all three.
SPLAT_QUALITY_THRESHOLDS = {
    "min_colmap_points": 500,
    "min_quality_score": 0.3,
    "min_frame_count": 100,
}

# Maximum side length in degrees for map tile bbox queries (~111 km per degree)
MAX_BBOX_DEGREES = 1.0

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

STATIC_URL = "/static/"
STATIC_ROOT = BASE_DIR / "staticfiles"

DEFAULT_AUTO_FIELD = "django.db.models.BigAutoField"