# -*- coding: utf-8 -*-
"""
Django settings for Adtlas DAI Management System.

This file contains all the configuration settings for the Adtlas project.
The project is designed for Dynamic Ad Insertion (DAI) management in broadcast television.

Generated by 'django-admin startproject' using Django 5.2.3.

For more information on this file, see
https://docs.djangoproject.com/en/5.2/topics/settings/

For the full list of settings and their values, see
https://docs.djangoproject.com/en/5.2/ref/settings/
"""

from pathlib import Path 
from decouple import config, Csv
from django.utils.translation import gettext_lazy as _

# Build paths inside the project like this: BASE_DIR / 'subdir'.
BASE_DIR = Path(__file__).resolve().parent.parent

# ==============================================================================
# CORE SETTINGS
# ==============================================================================

# Quick-start development settings - unsuitable for production
# See https://docs.djangoproject.com/en/5.2/howto/deployment/checklist/

# SECURITY WARNING: keep the secret key used in production secret! 
SECRET_KEY = config('SECRET_KEY', default="django-insecure-x+fk6m*$@q4c+3g5ta*$89_stqgegxxlmt42fe5pt$wb)m11-h", cast=str)

# SECURITY WARNING: don"t run with debug turned on in production!
DEBUG = config('DEBUG', default=True, cast=bool)

# Allowed hosts for the application
ALLOWED_HOSTS = config('ALLOWED_HOSTS', default='localhost,127.0.0.1', cast=Csv())

# ==============================================================================
# APPLICATION DEFINITION
# ==============================================================================

# Django built-in applications
DJANGO_APPS = [
    "django.contrib.admin",
    "django.contrib.auth", # Core authentication framework and its default models.
    "django.contrib.contenttypes", # Django content type system (allows permissions to be associated with models).
    "django.contrib.sessions",
    "django.contrib.messages",
    "django.contrib.staticfiles",
    "django.contrib.sites",
]

# Third-party applications
THIRD_PARTY_APPS = [
    "rest_framework",
    "corsheaders",
    "django_filters",
    "django_extensions",
    "django_celery_beat",
    "django_celery_results",
    "debug_toolbar", 
#     # "crispy_forms",
#     # "crispy_bootstrap5",
#     # "widget_tweaks",
#     # "allauth",
#     # "allauth.account",
#     # "allauth.socialaccount", 
]

# Local applications (Adtlas modules)
LOCAL_APPS = [
    "apps.common",
    "apps.accounts",
    "apps.authentication",
    "apps.core",
    "apps.campaigns",
    "apps.channels",
    "apps.advertisers", 
    "apps.creatives",
#     # "apps.activities", 
#     # "apps.agencies",
#     # "apps.adspots",
#     # "apps.playlists",
#     # "apps.analytics",
#     # "apps.vast",  
#     # "apps.api",  
#     # "apps.epg",
#     # "apps.jingles",
#     # "apps.programs",
#     # "apps.reporting",
]


# Application definition
# All installed applications
INSTALLED_APPS = DJANGO_APPS + THIRD_PARTY_APPS + LOCAL_APPS

# ==============================================================================
# MIDDLEWARE CONFIGURATION
# ==============================================================================

DJANGO_MIDDLEWARE = [
    "django.middleware.security.SecurityMiddleware", # Security middleware
    "corsheaders.middleware.CorsMiddleware", # CORS middleware (should be as high as possible)
    "django.contrib.sessions.middleware.SessionMiddleware", # Manages sessions across requests
    "django.middleware.common.CommonMiddleware", # Common middleware
    "django.middleware.csrf.CsrfViewMiddleware", # CSRF protection middleware
    "django.contrib.auth.middleware.AuthenticationMiddleware", # Associates users with requests using sessions.
    "django.contrib.messages.middleware.MessageMiddleware", # Messages middleware
    "django.middleware.clickjacking.XFrameOptionsMiddleware", # Clickjacking protection middleware
]

LOCAL_MIDDLEWARE = [
    "debug_toolbar.middleware.DebugToolbarMiddleware",
#     # "django_session_timeout.middleware.SessionTimeoutMiddleware",
#     # "apps.core.middleware.RequestMiddleware",       
#     # "apps.accounts.middleware.UserActivityMiddleware",
#     # "apps.accounts.middleware.RateLimitMiddleware",
#     # "apps.accounts.middleware.SecurityHeadersMiddleware",
#     # "apps.accounts.middleware.MaintenanceModeMiddleware",
#     # "apps.accounts.middleware.RequestLoggingMiddleware",
]

MIDDLEWARE = DJANGO_MIDDLEWARE + LOCAL_MIDDLEWARE

# ==============================================================================
# URL CONFIGURATION
# ==============================================================================

ROOT_URLCONF = "core.urls"

# ==============================================================================
# TEMPLATE CONFIGURATION
# ==============================================================================

TEMPLATES = [
    {
        "BACKEND": "django.template.backends.django.DjangoTemplates",
        "DIRS": [BASE_DIR / "templates"],  # Global templates directory
        "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",
                "django.template.context_processors.media",
                "django.template.context_processors.static",
            ],
        },
    },
]

# ==============================================================================
# WSGI CONFIGURATION
# ==============================================================================

WSGI_APPLICATION = "core.wsgi.application"

# ==============================================================================
# DATABASE CONFIGURATION
# ==============================================================================
# Database
# https://docs.djangoproject.com/en/5.2/ref/settings/#databases

# Check if DATABASE_URL is provided (Docker environment)
if config("DATABASE_URL", default=None, cast=str):
    # Database configuration with support for PostgreSQL and MySQL
    import dj_database_url
    DATABASES = {
        "default": dj_database_url.parse(config("DATABASE_URL", default=None, cast=str))
    }
else:
    DATABASES = {
        "default": {
            "ENGINE": config("DB_ENGINE", default="django.db.backends.sqlite3", cast=str),
            "NAME": config("DB_NAME", default=BASE_DIR / "db.sqlite3", cast=str),
            "USER": config("DB_USER", default="", cast=str),
            "PASSWORD": config("DB_PASSWORD", default="", cast=str),
            "HOST": config("DB_HOST", default="", cast=str),
            "PORT": config("DB_PORT", default="", cast=str),
            "OPTIONS": {
                "charset": "utf8mb4",
            } if config("DB_ENGINE", default="", cast=str).endswith("mysql") else {},
        }
    }

# Database connection pooling (optional)
if config("DB_CONN_MAX_AGE", default=None):
    DATABASES["default"]["CONN_MAX_AGE"] = config("DB_CONN_MAX_AGE", default=600, cast=int)

# ==============================================================================
# PASSWORD VALIDATION
# ==============================================================================
# Password validation
# https://docs.djangoproject.com/en/5.2/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",
    },
]

# ==============================================================================
# STATIC FILES CONFIGURATION
# ==============================================================================
# Static files (CSS, JavaScript, Images)
# https://docs.djangoproject.com/en/5.2/howto/static-files/

STATIC_URL = "/static/"
STATIC_ROOT = BASE_DIR / "staticfiles" # For production
STATICFILES_DIRS = [
    BASE_DIR / "static",  # Global static files directory
]

# ==============================================================================
# MEDIA FILES CONFIGURATION
# ==============================================================================
# Media files (User uploaded files)

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

# ==============================================================================
# DEFAULT PRIMARY KEY FIELD TYPE
# ==============================================================================
# Default primary key field type
# https://docs.djangoproject.com/en/5.2/ref/settings/#default-auto-field
DEFAULT_AUTO_FIELD = "django.db.models.BigAutoField"


# ==============================================================================
# Custom User Model
# ==============================================================================
# Custom user model
AUTH_USER_MODEL = "accounts.User"

LOGIN_URL = "auth:login"
LOGIN_REDIRECT_URL = "core:dashboard"
LOGOUT_REDIRECT_URL = "auth:login"

# ==============================================================================
# Site ID for django.contrib.sites
# ==============================================================================

SITE_ID = config("SITE_ID", default=1, cast=int) 

# ==============================================================================
# REST FRAMEWORK CONFIGURATION
# ==============================================================================

# Django REST Framework configuration
REST_FRAMEWORK = {
    'DEFAULT_AUTHENTICATION_CLASSES': [
        'rest_framework.authentication.SessionAuthentication',
        'rest_framework.authentication.TokenAuthentication',
    ],
    '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_RENDERER_CLASSES": [
        "rest_framework.renderers.JSONRenderer",
        "rest_framework.renderers.BrowsableAPIRenderer",
    ],
}

# ==============================================================================
# CORS CONFIGURATION
# ==============================================================================
# CORS settings
CORS_ALLOWED_ORIGINS = config(
    "CORS_ALLOWED_ORIGINS", 
    default="http://localhost:3000,http://127.0.0.1:3000,http://localhost:8080,http://127.0.0.1:8080",  # Vue development server
    cast=Csv()
)
CORS_ALLOW_ALL_ORIGINS = config("CORS_ALLOW_ALL_ORIGINS", default=True, cast=bool)
CORS_ALLOW_CREDENTIALS = config("CORS_ALLOW_CREDENTIALS", default=True, cast=bool)

# ==============================================================================
# CSRF CONFIGURATION
# ==============================================================================

# CSRF trusted origins for cross-origin requests
CSRF_TRUSTED_ORIGINS = config(
    "CSRF_TRUSTED_ORIGINS", 
    default="http://localhost:8000,http://127.0.0.1:8000,http://173.212.199.208:8082", 
    cast=Csv()
) 

# Security settings
SECURE_BROWSER_XSS_FILTER = True
SECURE_CONTENT_TYPE_NOSNIFF = True
X_FRAME_OPTIONS = 'DENY'

# Session settings
SESSION_COOKIE_AGE = 86400  # 24 hours
SESSION_COOKIE_SECURE = not DEBUG  # Use secure cookies in production
SESSION_COOKIE_HTTPONLY = True
SESSION_SAVE_EVERY_REQUEST = True

# CSRF settings
CSRF_COOKIE_SECURE = not DEBUG  # Use secure cookies in production
CSRF_COOKIE_HTTPONLY = True  # Only allow CSRF cookies to be sent via HTTP requests

# ==============================================================================
# LOGGING CONFIGURATION
# ==============================================================================

LOGGING = {
    "version": 1,
    "disable_existing_loggers": False,
    "formatters": {
        "verbose": {
            "format": "{levelname} {asctime} {module} {process:d} {thread:d} {message}",
            "style": "{",
        },
        "simple": {
            "format": "{levelname} {message}",
            "style": "{",
        },
    },
    "handlers": {
        "file": {
            "level": "INFO",
            "class": "logging.FileHandler",
            "filename": BASE_DIR / "logs" / "adtlas.log",
            "formatter": "verbose",
        },
        "console": {
            "level": "DEBUG",
            "class": "logging.StreamHandler",
            "formatter": "simple",
        },
    },
    "root": {
        "handlers": ["console", "file"],
        "level": "WARNING",
    },
    "loggers": {
        "django": {
            "handlers": ["console", "file"],
            "level": "INFO",
            "propagate": False,
        },
        "adtlas": {
            "handlers": ["console", "file"],
            "level": "DEBUG",
            "propagate": False,
        },
        "apps": {
            "handlers": ["file", "console"],
            "level": "DEBUG",
            "propagate": False,
        },
    },
}

# ==============================================================================
# EMAIL CONFIGURATION
# ==============================================================================

EMAIL_BACKEND = config("EMAIL_BACKEND", default="django.core.mail.backends.console.EmailBackend", cast=str)
EMAIL_HOST = config("EMAIL_HOST", default="localhost", cast=str)
EMAIL_PORT = config("EMAIL_PORT", default=25, cast=int)
EMAIL_HOST_USER = config("EMAIL_HOST_USER", default="", cast=str)
EMAIL_HOST_PASSWORD = config("EMAIL_HOST_PASSWORD", default="", cast=str)
EMAIL_USE_TLS = config("EMAIL_USE_TLS", default=False, cast=bool)
DEFAULT_FROM_EMAIL = config("DEFAULT_FROM_EMAIL", default="noreply@adtlas.com", cast=str)



# Cache configuration
CACHES = {
    'default': {
        'BACKEND': 'django.core.cache.backends.locmem.LocMemCache',
        'LOCATION': 'unique-snowflake',
    }
}


# ==============================================================================
# INTERNATIONALIZATION
# ==============================================================================
# Internationalization settings
LANGUAGE_CODE = config("LANGUAGE_CODE", default="en-us", cast=str)
TIME_ZONE = config("TIME_ZONE", default="UTC", cast=str)
USE_I18N = True
USE_L10N = True
USE_TZ = True
USE_THOUSAND_SEPARATOR = True

# LANGUAGES = [
#     ("ar", _("Arabic")),
#     ("en", _("English")),
#     ("fr", _("French")),
# ]

# LOCALE_PATHS = (
#     (BASE_DIR/"locale"),
# )


# File upload settings
FILE_UPLOAD_MAX_MEMORY_SIZE = 5242880  # 5MB
DATA_UPLOAD_MAX_MEMORY_SIZE = 5242880  # 5MB

# ==============================================================================
# SYSTEM CHECKS CONFIGURATION
# ==============================================================================
# Silence problematic system checks to allow server startup
SILENCED_SYSTEM_CHECKS = [
    'admin.E035',  # CreativeVersion admin field issues
    'admin.E020',  # filter_horizontal field issues
    'admin.E108',  # list_display field issues
    'admin.E116',  # list_filter field issues
    'urls.W005',   # Non-unique URL namespaces
]



# # ==============================================================================
# # SESSION CONFIGURATION
# # ==============================================================================

# SESSION_EXPIRE_SECONDS = config("SESSION_EXPIRE_SECONDS", default=7200, cast=int)  # 2 hours
# SESSION_EXPIRE_AFTER_LAST_ACTIVITY = True
# SESSION_TIMEOUT_REDIRECT = "/auth/login/"

 
# # ==============================================================================
# # CELERY CONFIGURATION
# # ==============================================================================

# CELERY_BROKER_URL = config("CELERY_BROKER_URL", default="redis://localhost:6379/0", cast=str)
# CELERY_RESULT_BACKEND = config("CELERY_RESULT_BACKEND", default="redis://localhost:6379/0", cast=str)
# CELERY_ACCEPT_CONTENT = ["json"]
# CELERY_TASK_SERIALIZER = "json"
# CELERY_RESULT_SERIALIZER = "json"
# CELERY_TIMEZONE = TIME_ZONE 
# CELERY_BEAT_SCHEDULER = "django_celery_beat.schedulers:DatabaseScheduler"

# # ==============================================================================
# # TELEGRAM INTEGRATION
# # ==============================================================================

# TELEGRAM = {
#     "bot_token": config("TELEGRAM_BOT_TOKEN", default="", cast=str),
#     "chat_id": config("TELEGRAM_CHAT_ID", default="", cast=str),
#     "channel_name": config("TELEGRAM_CHANNEL_NAME", default="adtlas_notifications", cast=str),
# }

# # ==============================================================================
# # FTP CONFIGURATION
# # ==============================================================================

# FTP_CONFIG = {
#     "host": config("FTP_HOST", default="", cast=str),
#     "user": config("FTP_USER", default="", cast=str),
#     "password": config("FTP_PASSWORD", default="", cast=str),
#     "port": config("FTP_PORT", default=21, cast=int),
# }

# # ==============================================================================
# # VAST CONFIGURATION
# # ==============================================================================

# VAST_CONFIG = {
#     "timeout": config("VAST_TIMEOUT", default=30, cast=int),
#     "max_workers": config("VAST_MAX_WORKERS", default=100, cast=int),
#     "retry_attempts": config("VAST_RETRY_ATTEMPTS", default=3, cast=int),
# }

# # ==============================================================================
# # CUSTOM ADTLAS SETTINGS
# # ==============================================================================

# # Application URL prefix
# APP_URL_PREFIX = config("APP_URL_PREFIX", default="/adtlas/")

# # File upload settings 
# FILE_UPLOAD_MAX_MEMORY_SIZE = config("FILE_UPLOAD_MAX_MEMORY_SIZE", default=52428800, cast=int)  # 50MB
# DATA_UPLOAD_MAX_MEMORY_SIZE = config("DATA_UPLOAD_MAX_MEMORY_SIZE", default=52428800, cast=int)  # 50MB
# FILE_UPLOAD_PERMISSIONS = 0o644

# ADTLAS_SETTINGS = {
#     "MAX_CAMPAIGN_DURATION_DAYS": config("MAX_CAMPAIGN_DURATION_DAYS", default=365, cast=int),
#     "DEFAULT_AD_SPOT_DURATION": config("DEFAULT_AD_SPOT_DURATION", default=30, cast=int),
#     "MAX_FILE_SIZE_MB": config("MAX_FILE_SIZE_MB", default=500, cast=int),
#     "SUPPORTED_VIDEO_FORMATS": ["mp4", "avi", "mov", "wmv", "flv"],
#     "SUPPORTED_AUDIO_FORMATS": ["mp3", "wav", "aac", "ogg"],
#     "TELEGRAM_BOT_TOKEN": config("TELEGRAM_BOT_TOKEN", default=""),
#     "TELEGRAM_CHAT_ID": config("TELEGRAM_CHAT_ID", default=""),
#     "FTP_SETTINGS": {
#         "HOST": config("FTP_HOST", default=""),
#         "PORT": config("FTP_PORT", default=21, cast=int),
#         "USER": config("FTP_USER", default=""),
#         "PASSWORD": config("FTP_PASSWORD", default=""),
#         "TIMEOUT": config("FTP_TIMEOUT", default=30, cast=int),
#     },
#     "VAST_SETTINGS": {
#         "VERSION": config("VAST_VERSION", default="4.0"),
#         "TIMEOUT": config("VAST_TIMEOUT", default=10, cast=int),
#         "MAX_REDIRECTS": config("VAST_MAX_REDIRECTS", default=5, cast=int),
#     },
#     "ANALYTICS_SETTINGS": {
#         "RETENTION_DAYS": config("ANALYTICS_RETENTION_DAYS", default=365, cast=int),
#         "BATCH_SIZE": config("ANALYTICS_BATCH_SIZE", default=1000, cast=int),
#     },
# }

# # Ad encoding settings
# AD_ENCODING_FORMATS = {
#     "video": ["mp4", "avi", "mov", "ts"],
#     "audio": ["mp3", "wav", "aac"],
# }

# # Campaign settings
# CAMPAIGN_DEFAULT_DURATION = config("CAMPAIGN_DEFAULT_DURATION", default=30, cast=int)  # days
# CAMPAIGN_MAX_BUDGET = config("CAMPAIGN_MAX_BUDGET", default=1000000.0, cast=float)

# # Analytics settings
# ANALYTICS_RETENTION_DAYS = config("ANALYTICS_RETENTION_DAYS", default=365, cast=int)
# ANALYTICS_BATCH_SIZE = config("ANALYTICS_BATCH_SIZE", default=1000, cast=int)


# # ==============================================================================
# # RATE LIMITING
# # ==============================================================================

# RATE_LIMIT_SETTINGS = {
#     "DEFAULT_RATE_LIMIT": config("DEFAULT_RATE_LIMIT", default="100/hour"),
#     "LOGIN_RATE_LIMIT": config("LOGIN_RATE_LIMIT", default="5/minute"),
#     "API_RATE_LIMIT": config("API_RATE_LIMIT", default="1000/hour"),
#     "UPLOAD_RATE_LIMIT": config("UPLOAD_RATE_LIMIT", default="10/minute"),
# }

# # ==============================================================================
# # MAINTENANCE MODE
# # ==============================================================================

# MAINTENANCE_MODE = config("MAINTENANCE_MODE", default=False, cast=bool)
# MAINTENANCE_ALLOWED_IPS = config(
#     "MAINTENANCE_ALLOWED_IPS",
#     default="127.0.0.1,localhost",
#     cast=lambda v: [s.strip() for s in v.split(",")]
# )

# # ==============================================================================
# # DEVELOPMENT SETTINGS
# # ==============================================================================

# if DEBUG:
#     INSTALLED_APPS += ["debug_toolbar"]
#     MIDDLEWARE += ["debug_toolbar.middleware.DebugToolbarMiddleware"]
#     INTERNAL_IPS = ["127.0.0.1", "localhost"]
    
#     # Debug Toolbar Configuration
#     DEBUG_TOOLBAR_CONFIG = {
#         "SHOW_TOOLBAR_CALLBACK": lambda request: DEBUG,
#     }


# # MESSAGE_STORAGE = "django.contrib.messages.storage.session.SessionStorage"