from datetime import timedelta
from pathlib import Path
from dotenv import load_dotenv, find_dotenv  # Python dotenv
import os

# Build paths inside the project like this: BASE_DIR / 'subdir'.
# Backend folder (/backend)
BASE_DIR = Path(__file__).resolve().parent.parent
# Root folder where docker-compose.yml is located
ROOT_DIR = Path(__file__).resolve().parent.parent.parent

# If you're hosting this with a secret provider, have this set to True
USE_VAULT = bool(os.getenv("USE_VAULT", False) == "True")
# Have this set to True to serve media and static contents directly via Django
SERVE_MEDIA = bool(os.getenv("SERVE_MEDIA", False) == "True")

load_dotenv(find_dotenv())


def get_secret(secret_name):
    if USE_VAULT:
        try:
            pass
            # Add specific implementations here if deploying to Azure, GCP, or AWS to get secrets from vault
        except:
            secret_value = ""
    else:
        # Fallback to .env or system environment variables for local development
        secret_value = os.getenv(secret_name)

    if secret_value is None:
        raise ValueError(f"Secret '{secret_name}' not found.")
    else:
        return secret_value


# URL Prefixes
URL_SCHEME = "https" if (get_secret("USE_HTTPS") == "True") else "http"
# Backend
BACKEND_ADDRESS = get_secret("BACKEND_ADDRESS")
BACKEND_PORT = get_secret("BACKEND_PORT")
# Frontend
FRONTEND_ADDRESS = get_secret("FRONTEND_ADDRESS")
FRONTEND_PORT = get_secret("FRONTEND_PORT")

ALLOWED_HOSTS = ["*"]
CSRF_TRUSTED_ORIGINS = [
    # Frontend
    f"{URL_SCHEME}://{FRONTEND_ADDRESS}:{FRONTEND_PORT}",
    f"{URL_SCHEME}://{FRONTEND_ADDRESS}",  # For external domains
    # Backend
    f"{URL_SCHEME}://{BACKEND_ADDRESS}:{BACKEND_PORT}",
    f"{URL_SCHEME}://{BACKEND_ADDRESS}",  # For external domains
    # You can also set up https://*.name.xyz for wildcards here
]

# SECURITY WARNING: don't run with debug turned on in production!
DEBUG = get_secret("BACKEND_DEBUG") == "True"
# Determines whether or not to insert test data within tables
SEED_DATA = get_secret("SEED_DATA") == "True"
# SECURITY WARNING: keep the secret key used in production secret!
SECRET_KEY = get_secret("SECRET_KEY")
# Selenium Config
# Initiate CAPTCHA solver in test mode
CAPTCHA_TESTING = get_secret("CAPTCHA_TESTING") == "True"
# If using Selenium and/or the provided CAPTCHA solver, determines whether or not to use proxies
USE_PROXY = get_secret("USE_PROXY") == "True"

# Stripe (For payments)
STRIPE_SECRET_KEY = get_secret("STRIPE_SECRET_KEY")
STRIPE_SECRET_WEBHOOK = get_secret("STRIPE_SECRET_WEBHOOK")
STRIPE_CHECKOUT_URL = f""

# Email credentials
EMAIL_HOST = get_secret("EMAIL_HOST")
EMAIL_HOST_USER = get_secret("EMAIL_HOST_USER")
EMAIL_HOST_PASSWORD = get_secret("EMAIL_HOST_PASSWORD")
EMAIL_PORT = get_secret("EMAIL_PORT")
EMAIL_USE_TLS = get_secret("EMAIL_USE_TLS") == "True"
EMAIL_ADDRESS = get_secret("EMAIL_ADDRESS") == "True"

# Application definition

INSTALLED_APPS = [
    "config",
    "unfold",
    "unfold.contrib.filters",
    "unfold.contrib.simple_history",
    "django.contrib.admin",
    "django.contrib.auth",
    "django.contrib.contenttypes",
    "django.contrib.sessions",
    "django.contrib.messages",
    "django.contrib.staticfiles",
    "storages",
    "django_extensions",
    "rest_framework",
    "rest_framework_simplejwt",
    "django_celery_results",
    "django_celery_beat",
    "simple_history",
    "djoser",
    "corsheaders",
    "drf_spectacular",
    "drf_spectacular_sidecar",
    "webdriver",
    "accounts",
    "user_groups",
    "subscriptions",
    "payments",
    "billing",
    "emails",
    "notifications",
    "search_results",
]

if DEBUG:
    INSTALLED_APPS += ["silk"]
    MIDDLEWARE = [
        "django.middleware.security.SecurityMiddleware",
        "silk.middleware.SilkyMiddleware",
        "django.contrib.sessions.middleware.SessionMiddleware",
        "corsheaders.middleware.CorsMiddleware",
        "django.middleware.common.CommonMiddleware",
        "django.middleware.csrf.CsrfViewMiddleware",
        "django.contrib.auth.middleware.AuthenticationMiddleware",
        "django.contrib.messages.middleware.MessageMiddleware",
        "django.middleware.clickjacking.XFrameOptionsMiddleware",
    ]
    DJANGO_LOG_LEVEL = "DEBUG"
    # Enables VS Code debugger to break on raised exceptions
    DEBUG_PROPAGATE_EXCEPTIONS = "DEBUG"
    LOGGING = {
        "version": 1,
        "disable_existing_loggers": False,
        "handlers": {
            "console": {
                "class": "logging.StreamHandler",
            },
        },
        "root": {
            "handlers": ["console"],
            "level": "DEBUG",
        },
    }
else:
    MIDDLEWARE = [
        "django.middleware.security.SecurityMiddleware",
        "whitenoise.middleware.WhiteNoiseMiddleware",
        "django.contrib.sessions.middleware.SessionMiddleware",
        "corsheaders.middleware.CorsMiddleware",
        "django.middleware.common.CommonMiddleware",
        "django.middleware.csrf.CsrfViewMiddleware",
        "django.contrib.auth.middleware.AuthenticationMiddleware",
        "django.contrib.messages.middleware.MessageMiddleware",
        "django.middleware.clickjacking.XFrameOptionsMiddleware",
    ]

# Static files (CSS, JavaScript, Images)
# https://docs.djangoproject.com/en/4.2/howto/static-files/

ROOT_URLCONF = "config.urls"
if SERVE_MEDIA:
    # Cloud Storage Settings
    # This is assuming you use the same bucket for media and static containers
    CLOUD_BUCKET = get_secret("CLOUD_BUCKET")
    MEDIA_CONTAINER = get_secret("MEDIA_CONTAINER")
    STATIC_CONTAINER = get_secret("STATIC_CONTAINER")

    MEDIA_URL = f"https://{CLOUD_BUCKET}/{MEDIA_CONTAINER}/"
    MEDIA_ROOT = f"https://{CLOUD_BUCKET}/"

    STATIC_URL = f"https://{CLOUD_BUCKET}/{STATIC_CONTAINER}/"
    STATIC_ROOT = f"https://{CLOUD_BUCKET}/{STATIC_CONTAINER}/"

    # Consult django-storages documentation when filling in these values. This will vary depending on your cloud service provider
    STORAGES = {
        "default": {
            # TODO: Set this up here if you're using cloud storage
            "BACKEND": None,
            "OPTIONS": {
                # Optional parameters
            },
        },
        "staticfiles": {
            # TODO: Set this up here if you're using cloud storage
            "BACKEND": None,
            "OPTIONS": {
                # Optional parameters
            },
        },
    }
else:
    STATIC_URL = "static/"
    STATIC_ROOT = os.path.join(BASE_DIR, "static")
    STATICFILES_STORAGE = "whitenoise.storage.CompressedManifestStaticFilesStorage"
    MEDIA_URL = "api/v1/media/"
    MEDIA_ROOT = os.path.join(BASE_DIR, "media")
    ROOT_URLCONF = "config.urls"

TEMPLATES = [
    {
        "BACKEND": "django.template.backends.django.DjangoTemplates",
        "DIRS": [
            BASE_DIR / "emails/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",
            ],
        },
    },
]

REST_FRAMEWORK = {
    "DEFAULT_AUTHENTICATION_CLASSES": (
        "rest_framework_simplejwt.authentication.JWTAuthentication",
    ),
    "DEFAULT_THROTTLE_CLASSES": [
        "rest_framework.throttling.AnonRateThrottle",
        "rest_framework.throttling.UserRateThrottle",
    ],
    "DEFAULT_THROTTLE_RATES": {"anon": "360/min", "user": "1440/min"},
    "DEFAULT_SCHEMA_CLASS": "drf_spectacular.openapi.AutoSchema",
}

# DRF-Spectacular
SPECTACULAR_SETTINGS = {
    "TITLE": "DRF-Template",
    "DESCRIPTION": "A Template Project by Keannu Bernasol",
    "VERSION": "1.0.0",
    "SERVE_INCLUDE_SCHEMA": False,
    "SWAGGER_UI_DIST": "SIDECAR",
    "SWAGGER_UI_FAVICON_HREF": "SIDECAR",
    "REDOC_DIST": "SIDECAR",
}

WSGI_APPLICATION = "config.wsgi.application"

# If you're using an external connection bouncer (eg. PgBouncer), server side cursors must be disabled to avoid any issues
USE_BOUNCER = get_secret("USE_BOUNCER")
if USE_BOUNCER:
    DISABLE_SERVER_SIDE_CURSORS = True
    DB_HOST = get_secret("DB_BOUNCER_HOST")
    DB_PORT = get_secret("DB_BOUNCER_PORT")
else:
    DISABLE_SERVER_SIDE_CURSORS = False
    DB_HOST = get_secret("DB_HOST")
    DB_PORT = get_secret("DB_PORT")

DATABASES = {
    "default": {
        "ENGINE": "django.db.backends.postgresql",
        "DISABLE_SERVER_SIDE_CURSORS": DISABLE_SERVER_SIDE_CURSORS,
        "NAME": get_secret("DB_DATABASE"),
        "USER": get_secret("DB_USERNAME"),
        "PASSWORD": get_secret("DB_PASSWORD"),
        "HOST": DB_HOST,
        "PORT": DB_PORT,
        "OPTIONS": {"sslmode": get_secret("DB_SSL_MODE")},
    }
}
# Django Cache
CACHES = {
    "default": {
        "BACKEND": "django_redis.cache.RedisCache",
        "LOCATION": f"redis://{get_secret('REDIS_HOST')}:{get_secret('REDIS_PORT')}/2",
        "OPTIONS": {
            "CLIENT_CLASS": "django_redis.client.DefaultClient",
        },
    }
}

AUTH_USER_MODEL = "accounts.CustomUser"

DJOSER = {
    "SEND_ACTIVATION_EMAIL": True,
    "SEND_CONFIRMATION_EMAIL": True,
    "PASSWORD_RESET_CONFIRM_URL": "reset_password_confirm/{uid}/{token}",
    "ACTIVATION_URL": "activation/{uid}/{token}",
    "USER_AUTHENTICATION_RULES": ["djoser.authentication.TokenAuthenticationRule"],
    "EMAIL": {
        "activation": "emails.templates.ActivationEmail",
        "password_reset": "emails.templates.PasswordResetEmail",
    },
    "SERIALIZERS": {
        "user": "accounts.serializers.CustomUserSerializer",
        "current_user": "accounts.serializers.CustomUserSerializer",
        "user_create": "accounts.serializers.UserRegistrationSerializer",
    },
    "PERMISSIONS": {
        # Disable some unneeded endpoints by setting them to admin only
        "username_reset": ["rest_framework.permissions.IsAdminUser"],
        "username_reset_confirm": ["rest_framework.permissions.IsAdminUser"],
        "set_username": ["rest_framework.permissions.IsAdminUser"],
        "set_password": ["rest_framework.permissions.IsAdminUser"],
    },
}

# Password validation
# https://docs.djangoproject.com/en/4.2/ref/settings/#auth-password-validators

AUTH_PASSWORD_VALIDATORS = [
    {
        "NAME": "django.contrib.auth.password_validation.UserAttributeSimilarityValidator",
    },
    {
        "NAME": "django.contrib.auth.password_validation.MinimumLengthValidator",
        "OPTIONS": {
            "min_length": 8,
        },
    },
    {
        "NAME": "django.contrib.auth.password_validation.CommonPasswordValidator",
    },
    {
        "NAME": "django.contrib.auth.password_validation.NumericPasswordValidator",
    },
    # Additional password validators
    {
        "NAME": "accounts.validators.SpecialCharacterValidator",
    },
    {
        "NAME": "accounts.validators.LowercaseValidator",
    },
    {
        "NAME": "accounts.validators.UppercaseValidator",
    },
    {
        "NAME": "accounts.validators.NumberValidator",
    },
]


# Internationalization
# https://docs.djangoproject.com/en/4.2/topics/i18n/

LANGUAGE_CODE = "en-us"

TIME_ZONE = get_secret("TIMEZONE")

USE_I18N = True

USE_TZ = True


# Default primary key field type
# https://docs.djangoproject.com/en/4.2/ref/settings/#default-auto-field

DEFAULT_AUTO_FIELD = "django.db.models.BigAutoField"

SITE_NAME = "DRF-Template"

# JWT Token Lifetimes
SIMPLE_JWT = {
    "ACCESS_TOKEN_LIFETIME": timedelta(hours=1),
    "REFRESH_TOKEN_LIFETIME": timedelta(days=3),
}

CORS_ALLOW_ALL_ORIGINS = True
CORS_ALLOW_CREDENTIALS = True

# Celery Configuration Options
CELERY_TIMEZONE = TIME_ZONE
CELERY_TASK_TRACK_STARTED = True
CELERY_TASK_TIME_LIMIT = 30 * 60
CELERY_BROKER_URL = get_secret("CELERY_BROKER")
CELERY_BROKER = get_secret("CELERY_BROKER")
CELERY_BACKEND = get_secret("CELERY_BROKER")
CELERY_RESULT_BACKEND = get_secret("CELERY_RESULT_BACKEND")
CELERY_RESULT_EXTENDED = True

# Celery Beat Options
CELERY_BEAT_SCHEDULER = "django_celery_beat.schedulers:DatabaseScheduler"

# Maximum number of rows that can be updated within the Django admin panel
DATA_UPLOAD_MAX_NUMBER_FIELDS = 20480

GRAPH_MODELS = {
    "app_labels": [
        "accounts",
        "user_groups",
        "billing",
        "emails",
        "payments",
        "subscriptions",
        "search_results",
    ]
}