"""
Django settings for nyanzamarket project.
"""

import os
from pathlib import Path
from datetime import timedelta
from dotenv import load_dotenv

# Load environment variables
load_dotenv()

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


# Quick-start development settings - unsuitable for production
SECRET_KEY = os.getenv('SECRET_KEY', 'django-insecure-change-this-in-production')

DEBUG = os.getenv('DEBUG', 'True').lower() == 'true'

ALLOWED_HOSTS = [
    'api.isoftke.com',
    'isoftke.com',
    'localhost',
    '127.0.0.1',
]


# Application definition
INSTALLED_APPS = [
    "django.contrib.auth",
    "django.contrib.contenttypes",
    "django.contrib.sessions",
    "django.contrib.sitemaps",
    "django.contrib.messages",
    "django.contrib.staticfiles",
    "django.contrib.sites",

    # Third party apps
    "rest_framework",
    "rest_framework_simplejwt",
    "rest_framework_simplejwt.token_blacklist",
    "corsheaders",

    # Local apps
    "accounts",
    "products",
    "payments",
    "chat",
    "notifications",
    "pos",
    "promotions",
    "stories",
    "markets",
    "blog",
    "groups",
    "videos",
    "live",
    "ai_chat",
    "services",
    "events",
    "menus",
    "orders",
    "team",
]

MIDDLEWARE = [
    "corsheaders.middleware.CorsMiddleware",
    "django.middleware.security.SecurityMiddleware",
    "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",
]

SITE_ID = 1


ROOT_URLCONF = "nyanzamarket.urls"

TEMPLATES = [
    {
        "BACKEND": "django.template.backends.django.DjangoTemplates",
        "DIRS": [BASE_DIR / "templates"],
        "APP_DIRS": True,
        "OPTIONS": {
            "context_processors": [
                "django.template.context_processors.request",
                "django.contrib.auth.context_processors.auth",
                "django.contrib.messages.context_processors.messages",
            ],
        },
    },
]

WSGI_APPLICATION = "nyanzamarket.wsgi.application"


# Database (SQLite for development)
# DATABASES = {
#     "default": {
#         "ENGINE": "django.db.backends.sqlite3",
#         "NAME": BASE_DIR / "db.sqlite3",
#     }
# }

# PostgreSQL (uncomment below and comment out SQLite above when ready)
DATABASES = {
    "default": {
        "ENGINE": "django.db.backends.postgresql",
        "NAME": os.environ.get("POSTGRES_DB", "vdpyugbe_ianslayer"),
        "USER": os.environ.get("POSTGRES_USER", "vdpyugbe_cherylaianmhe"),
        "PASSWORD": os.environ.get("POSTGRES_PASSWORD", "aZ6_pW3=UE48"),
        "HOST": os.environ.get("POSTGRES_HOST", "localhost"),
        "PORT": os.environ.get("POSTGRES_PORT", "5432"),
    }
}


# Password validation
AUTH_PASSWORD_VALIDATORS = [
    {
        "NAME": "django.contrib.auth.password_validation.UserAttributeSimilarityValidator",
    },
    {
        "NAME": "django.contrib.auth.password_validation.MinimumLengthValidator",
    },
    {
        "NAME": "django.contrib.auth.password_validation.CommonPasswordValidator",
    },
    {
        "NAME": "django.contrib.auth.password_validation.NumericPasswordValidator",
    },
]


# Internationalization
LANGUAGE_CODE = "en-us"
TIME_ZONE = "Africa/Nairobi"
USE_I18N = True
USE_TZ = True


# Static files (CSS, JavaScript, Images)
STATIC_URL = "static/"
STATIC_ROOT = BASE_DIR / "staticfiles"

# Media files (uploads)
MEDIA_URL = "/media/"
MEDIA_ROOT = BASE_DIR / "media"


# Default primary key field type
DEFAULT_AUTO_FIELD = "django.db.models.BigAutoField"


# Custom User Model
AUTH_USER_MODEL = "accounts.User"


# Email Configuration
EMAIL_BACKEND = 'django.core.mail.backends.smtp.EmailBackend'
EMAIL_HOST = os.getenv('EMAIL_HOST', 'premium287.web-hosting.com')
EMAIL_PORT = int(os.getenv('EMAIL_PORT', 465))
EMAIL_HOST_USER = os.getenv('EMAIL_HOST_USER', 'info@nyanzamarket.com')
EMAIL_HOST_PASSWORD = os.getenv('EMAIL_HOST_PASSWORD', '')
EMAIL_USE_SSL = os.getenv('EMAIL_USE_SSL', 'True').lower() == 'true'
EMAIL_USE_TLS = False
DEFAULT_FROM_EMAIL = os.getenv('DEFAULT_FROM_EMAIL', 'NyanzaMarket <info@nyanzamarket.com>')

# Frontend URL for email links
FRONTEND_URL = os.getenv('FRONTEND_URL', 'http://localhost:5173')

# M-Pesa Settings
MPESA_SANDBOX = os.getenv('MPESA_SANDBOX', 'False').lower() == 'true'
MPESA_ENCRYPTION_KEY = os.getenv('MPESA_ENCRYPTION_KEY', SECRET_KEY[:32])
MPESA_CALLBACK_URL = os.getenv('MPESA_CALLBACK_URL', 'https://api.isoftke.com/api/payments/mpesa/callback/')


# Django REST Framework settings
REST_FRAMEWORK = {
    'DEFAULT_AUTHENTICATION_CLASSES': (
        'rest_framework_simplejwt.authentication.JWTAuthentication',
    ),
    'DEFAULT_PERMISSION_CLASSES': (
        'rest_framework.permissions.IsAuthenticated',
    ),
    'DEFAULT_PARSER_CLASSES': (
        'rest_framework.parsers.JSONParser',
        'rest_framework.parsers.MultiPartParser',
        'rest_framework.parsers.FormParser',
    ),
}


# JWT Settings
SIMPLE_JWT = {
    'ACCESS_TOKEN_LIFETIME': timedelta(days=int(os.getenv('JWT_ACCESS_TOKEN_LIFETIME_DAYS', 1))),
    'REFRESH_TOKEN_LIFETIME': timedelta(days=int(os.getenv('JWT_REFRESH_TOKEN_LIFETIME_DAYS', 7))),
    'ROTATE_REFRESH_TOKENS': True,
    'BLACKLIST_AFTER_ROTATION': True,
    'UPDATE_LAST_LOGIN': True,

    'ALGORITHM': 'HS256',
    'SIGNING_KEY': SECRET_KEY,

    'AUTH_HEADER_TYPES': ('Bearer',),
    'AUTH_HEADER_NAME': 'HTTP_AUTHORIZATION',
    'USER_ID_FIELD': 'id',
    'USER_ID_CLAIM': 'user_id',
}


CORS_ALLOWED_ORIGINS = [
    "https://wananchimart.com",
    "https://www.wananchimart.com",
    "https://isoftke.com",
    "http://localhost:5173",
    "http://127.0.0.1:5173",
    "http://localhost:3000",
    "http://127.0.0.1:3000",
    "http://localhost:8080",
    "http://127.0.0.1:8080",
    # Capacitor mobile app origins
    "capacitor://localhost",
    "http://localhost",
    "https://localhost",
    "ionic://localhost",
    "http://192.168.0.1",
]


# For mobile apps that may send null/no origin
CORS_ALLOW_ALL_ORIGINS = False

# Allow requests with no Origin header (mobile apps sometimes don't send one)
CORS_ORIGIN_ALLOW_ALL = False
CORS_ORIGIN_WHITELIST = CORS_ALLOWED_ORIGINS

# Regex patterns for origins (catches variations)
CORS_ALLOWED_ORIGIN_REGEXES = [
    r"^https?://localhost(:\d+)?$",
    r"^https?://127\.0\.0\.1(:\d+)?$",
    r"^capacitor://.*$",
    r"^ionic://.*$",
    r"^http://192\.168\.\d+\.\d+(:\d+)?$",
]

CORS_ALLOW_CREDENTIALS = True


# Google OAuth Settings
GOOGLE_CLIENT_ID = os.getenv('GOOGLE_CLIENT_ID', '')

CORS_ALLOW_HEADERS = [
    'accept',
    'accept-encoding',
    'authorization',
    'content-type',
    'dnt',
    'origin',
    'user-agent',
    'x-csrftoken',
    'x-requested-with',
]

CORS_ALLOW_METHODS = [
    'DELETE',
    'GET',
    'OPTIONS',
    'PATCH',
    'POST',
    'PUT',
]


# Redis Cache
CACHES = {
    "default": {
        "BACKEND": "django_redis.cache.RedisCache",
        "LOCATION": os.getenv("REDIS_URL", "redis://127.0.0.1:6379/0"),
        "OPTIONS": {
            "CLIENT_CLASS": "django_redis.client.DefaultClient",
        },
        "KEY_PREFIX": "nyanza",
        "TIMEOUT": 300,  # 5 minutes default
    }
}

# Use Redis for sessions too
SESSION_ENGINE = "django.contrib.sessions.backends.cache"
SESSION_CACHE_ALIAS = "default"

# OTP Settings
OTP_EXPIRY_MINUTES = 10
OTP_LENGTH = 6

# Paystack Settings
PAYSTACK_SECRET_KEY = 'sk_live_1eebefe35902c9fae68e5a5d7afad0f2782e18d9'
PAYSTACK_PUBLIC_KEY = 'pk_live_cdf0dad3a3af640e5ad40a8ed9e03b033f6ac268'
PAYSTACK_BASE_URL = 'https://api.paystack.co'

# Upgrade Price (in Kobo for Paystack - 1 KES = 100 Kobo equivalent)
VENDOR_UPGRADE_PRICE = 99900  # KES 999 in kobo
VENDOR_VERIFICATION_PRICE = 50000  # KES 500 in kobo

# CSRF Trusted Origins (required for production with HTTPS)
CSRF_TRUSTED_ORIGINS = [
    "https://api.isoftke.com",
    "https://wananchimart.com",
    "https://www.wananchimart.com",
]

# Agora Settings (Live Streaming)
AGORA_APP_ID = os.getenv('AGORA_APP_ID', '')
AGORA_APP_CERTIFICATE = os.getenv('AGORA_APP_CERTIFICATE', '')

# Production Security Settings
if not DEBUG:
    SECURE_SSL_REDIRECT = False  # Let Nginx/hosting handle SSL redirect
    SECURE_PROXY_SSL_HEADER = ('HTTP_X_FORWARDED_PROTO', 'https')
    SESSION_COOKIE_SECURE = True
    CSRF_COOKIE_SECURE = True
    SECURE_BROWSER_XSS_FILTER = True
    SECURE_CONTENT_TYPE_NOSNIFF = True
    X_FRAME_OPTIONS = 'DENY'
