import os
from pathlib import Path
from urllib.parse import unquote, urlparse

from dotenv import load_dotenv


BASE_DIR = Path(__file__).resolve().parent.parent
load_dotenv(BASE_DIR / ".env")

SECRET_KEY = os.environ.get("SECRET_KEY", "django-insecure-flux-local-key")
DEBUG = os.environ.get("DEBUG", "True").lower() in ("1", "true", "yes", "on")
ALLOWED_HOSTS = [
    host.strip()
    for host in os.environ.get("ALLOWED_HOSTS", "localhost,127.0.0.1").split(",")
    if host.strip()
]

if DEBUG and "*" not in ALLOWED_HOSTS:
    ALLOWED_HOSTS.append("*")

INSTALLED_APPS = [
    "daphne",
    "django.contrib.auth",
    "django.contrib.contenttypes",
    "django.contrib.sessions",
    "django.contrib.staticfiles",
    "corsheaders",
    "rest_framework",
    "channels",
    "apps.accounts",
    "apps.calls",
]

MIDDLEWARE = [
    "corsheaders.middleware.CorsMiddleware",
    "django.middleware.security.SecurityMiddleware",
    "django.contrib.sessions.middleware.SessionMiddleware",
    "django.middleware.common.CommonMiddleware",
]

ROOT_URLCONF = "flux_backend.urls"
ASGI_APPLICATION = "flux_backend.asgi.application"
WSGI_APPLICATION = "flux_backend.wsgi.application"

DATABASE_URL = os.environ.get("DATABASE_URL", "").strip()
if DATABASE_URL:
    parsed_db = urlparse(DATABASE_URL)
    DATABASES = {
        "default": {
            "ENGINE": "django.db.backends.postgresql",
            "NAME": parsed_db.path.lstrip("/"),
            "USER": unquote(parsed_db.username or ""),
            "PASSWORD": unquote(parsed_db.password or ""),
            "HOST": parsed_db.hostname,
            "PORT": parsed_db.port or 5432,
            "OPTIONS": {"sslmode": "require"},
        }
    }
else:
    DATABASES = {
        "default": {
            "ENGINE": "django.db.backends.sqlite3",
            "NAME": BASE_DIR / "db.sqlite3",
        }
    }

REST_FRAMEWORK = {
    "DEFAULT_PERMISSION_CLASSES": [
        "rest_framework.permissions.AllowAny",
    ],
}

FRONTEND_URL = os.environ.get("FRONTEND_URL", "http://localhost:3000")
CORS_ALLOW_ALL_ORIGINS = os.environ.get("CORS_ALLOW_ALL_ORIGINS", "True").lower() in ("1", "true", "yes", "on")
CORS_ALLOW_CREDENTIALS = True
CORS_ALLOWED_ORIGINS = [
    origin.strip()
    for origin in os.environ.get("CORS_ALLOWED_ORIGINS", FRONTEND_URL).split(",")
    if origin.strip()
]

CHANNEL_LAYERS = {
    "default": {
        "BACKEND": "channels.layers.InMemoryChannelLayer",
    },
}

LANGUAGE_CODE = "en-us"
TIME_ZONE = "UTC"
USE_I18N = True
USE_TZ = True
STATIC_URL = "static/"
DEFAULT_AUTO_FIELD = "django.db.models.BigAutoField"

GOOGLE_CLIENT_ID = os.environ.get("GOOGLE_CLIENT_ID", "")
SUPABASE_URL = os.environ.get("SUPABASE_URL", "")
SUPABASE_ANON_KEY = os.environ.get("SUPABASE_ANON_KEY", "")