import os
from pathlib import Path

import decouple

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

# ---------------------------------------------------------------------------
# Environment
# ---------------------------------------------------------------------------
config = decouple.AutoConfig(search_path=BASE_DIR / ".env")

SECRET_KEY = config("SECRET_KEY", default="django-insecure-change-me-in-production")
DEBUG = config("DEBUG", default=False, cast=bool)
ALLOWED_HOSTS = config("ALLOWED_HOSTS", default="localhost,127.0.0.1", cast=decouple.Csv())

# ---------------------------------------------------------------------------
# Application definition
# ---------------------------------------------------------------------------
INSTALLED_APPS = [
    "django.contrib.admin",
    "django.contrib.auth",
    "django.contrib.contenttypes",
    "django.contrib.sessions",
    "django.contrib.messages",
    "django.contrib.staticfiles",
    # Third-party
    "rest_framework",
    "rest_framework_simplejwt",
    "corsheaders",
    "django_filters",
    "drf_spectacular",
    # Local
    "apps.accounts",
    "apps.documents",
    "apps.collections",
    "apps.reading",
]

MIDDLEWARE = [
    "django.middleware.security.SecurityMiddleware",
    "whitenoise.middleware.WhiteNoiseMiddleware",
    "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": [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", default="django.db.backends.postgresql"),
        "NAME": config("DB_NAME", default="cloud_reader"),
        "USER": config("DB_USER", default="cloud_reader"),
        "PASSWORD": config("DB_PASSWORD", default="cloud_reader"),
        "HOST": config("DB_HOST", default="localhost"),
        "PORT": config("DB_PORT", default="5432", cast=int),
    }
}

DEFAULT_AUTO_FIELD = "django.db.models.BigAutoField"

# ---------------------------------------------------------------------------
# Auth
# ---------------------------------------------------------------------------
AUTH_USER_MODEL = "accounts.User"
AUTH_PASSWORD_VALIDATORS = [
    {"NAME": "django.contrib.auth.password_validation.MinimumLengthValidator"},
    {"NAME": "django.contrib.auth.password_validation.CommonPasswordValidator"},
    {"NAME": "django.contrib.auth.password_validation.NumericPasswordValidator"},
]

LOGIN_URL = "rest_framework:login"
LOGOUT_URL = "rest_framework:logout"

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

# ---------------------------------------------------------------------------
# Static & Media files
# ---------------------------------------------------------------------------
STATIC_URL = "static/"
STATIC_ROOT = BASE_DIR / "staticfiles"
STATICFILES_DIRS = [BASE_DIR / "static"]
STATICFILES_STORAGE = "whitenoise.storage.CompressedManifestStaticFilesStorage"

MEDIA_URL = "media/"
MEDIA_ROOT = BASE_DIR / "media"

# ---------------------------------------------------------------------------
# CORS
# ---------------------------------------------------------------------------
CORS_ALLOWED_ORIGINS = config(
    "CORS_ALLOWED_ORIGINS",
    default="http://localhost:5173,http://localhost:3000",
    cast=decouple.Csv(),
)
CORS_ALLOW_CREDENTIALS = True

# ---------------------------------------------------------------------------
# REST Framework
# ---------------------------------------------------------------------------
REST_FRAMEWORK = {
    "DEFAULT_AUTHENTICATION_CLASSES": (
        "rest_framework_simplejwt.authentication.JWTAuthentication",
    ),
    "DEFAULT_PERMISSION_CLASSES": (
        "rest_framework.permissions.IsAuthenticated",
    ),
    "DEFAULT_PAGINATION_CLASS": "rest_framework.pagination.PageNumberPagination",
    "PAGE_SIZE": 20,
    "DEFAULT_FILTER_BACKENDS": [
        "django_filters.rest_framework.DjangoFilterBackend",
        "rest_framework.filters.SearchFilter",
        "rest_framework.filters.OrderingFilter",
    ],
    "DEFAULT_SCHEMA_CLASS": "drf_spectacular.openapi.AutoSchema",
    "EXCEPTION_HANDLER": "config.exceptions.custom_exception_handler",
}

# ---------------------------------------------------------------------------
# SimpleJWT
# ---------------------------------------------------------------------------
from datetime import timedelta  # noqa: E402

SIMPLE_JWT = {
    "ACCESS_TOKEN_LIFETIME": timedelta(minutes=30),
    "REFRESH_TOKEN_LIFETIME": timedelta(days=7),
    "ROTATE_REFRESH_TOKENS": True,
    "AUTH_HEADER_TYPES": ("Bearer",),
}

# ---------------------------------------------------------------------------
# drf-spectacular (OpenAPI)
# ---------------------------------------------------------------------------
SPECTACULAR_SETTINGS = {
    "TITLE": "Cloud Reader API",
    "VERSION": "0.1.0",
    "SERVE_INCLUDE_SCHEMA": False,
}