"""
Django settings for base project.

Generated by 'django-admin startproject' using Django 6.0.5.

For more information on this file, see
https://docs.djangoproject.com/en/6.0/topics/settings/

For the full list of settings and their values, see
https://docs.djangoproject.com/en/6.0/ref/settings/
"""

from pathlib import Path
import os
from datetime import timedelta
from django.core.exceptions import ImproperlyConfigured
from decouple import config, Csv
import dj_database_url

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


# Quick-start development settings - unsuitable for production
# See https://docs.djangoproject.com/en/6.0/howto/deployment/checklist/

# SECURITY WARNING: keep the secret key used in production secret!
SECRET_KEY = config('SECRET_KEY')

DEBUG = config('DEBUG', default=False, cast=bool)

ALLOWED_HOSTS = config('ALLOWED_HOSTS', default='localhost,127.0.0.1', cast=Csv())


# Application definition

INSTALLED_APPS = [
    # Jazzmin must be BEFORE django.contrib.admin
    'jazzmin',
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
    # Third-party apps
    'rest_framework',
    'rest_framework_simplejwt',
    'rest_framework_simplejwt.token_blacklist',
    'corsheaders',
    'drf_spectacular',
    'django_filters',
    'channels',
    # Local apps
    'base',
]

MIDDLEWARE = [
    'django.middleware.security.SecurityMiddleware',
    # WhiteNoise serves collected static files from the Django app.
    '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 = 'base.urls'

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

# ASGI application (required for Django Channels)
ASGI_APPLICATION = 'base.asgi.application'

# WSGI application (kept for admin / fallback)
WSGI_APPLICATION = 'base.wsgi.application'


# Database
# https://docs.djangoproject.com/en/6.0/ref/settings/#databases

DATABASE_URL = config('DATABASE_URL', default='')
if DATABASE_URL:
    DATABASES = {
        'default': dj_database_url.parse(
            DATABASE_URL,
            conn_max_age=600,
            conn_health_checks=True,
            ssl_require=config('DATABASE_SSL_REQUIRE', default=False, cast=bool),
        )
    }
else:
    REQUIRE_DATABASE_URL = config('REQUIRE_DATABASE_URL', default=not DEBUG, cast=bool)
    if REQUIRE_DATABASE_URL:
        raise ImproperlyConfigured(
            'DATABASE_URL must be set when DEBUG is false. '
            'Use the cPanel MySQL database credentials in production.'
        )

    # Local development fallback only. Production should set DATABASE_URL.
    DATABASES = {
        'default': {
            'ENGINE': 'django.db.backends.sqlite3',
            'NAME': BASE_DIR / 'db.sqlite3',
        }
    }


# Password validation
# https://docs.djangoproject.com/en/6.0/ref/settings/#auth-password-validators

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
# https://docs.djangoproject.com/en/6.0/topics/i18n/

LANGUAGE_CODE = 'en-us'

TIME_ZONE = 'UTC'

USE_I18N = True

USE_TZ = True


# Static files (CSS, JavaScript, Images)
# https://docs.djangoproject.com/en/6.0/howto/static-files/

STATIC_URL = '/static/'
STATIC_ROOT = BASE_DIR / 'staticfiles'
MEDIA_URL = '/media/'
MEDIA_ROOT = BASE_DIR / 'media'

STORAGES = {
    'default': {
        'BACKEND': 'django.core.files.storage.FileSystemStorage',
    },
    'staticfiles': {
        'BACKEND': 'whitenoise.storage.CompressedManifestStaticFilesStorage',
    },
}

# CMS-managed brand logo. This intentionally lives inside the collected
# static tree requested by the project so the public site and standalone CMS
# reference one canonical asset.
CMS_LOGO_ROOT = STATIC_ROOT / 'rest_framework' / 'img' / 'logo'
CMS_LOGO_URL = '/api/assets/logo/'

# Default primary key field type
# https://docs.djangoproject.com/en/6.0/ref/settings/#default-auto-field

DEFAULT_AUTO_FIELD = 'django.db.models.BigAutoField'

# ---------------------------------------------------------------------------
# Django Channels — Channel Layer
# ---------------------------------------------------------------------------
# Redis shares WebSocket events across ASGI processes in production. Local
# development keeps the zero-dependency in-memory layer when REDIS_URL is empty.
REDIS_URL = config('REDIS_URL', default='')
if REDIS_URL:
    CHANNEL_LAYERS = {
        'default': {
            'BACKEND': 'channels_redis.core.RedisChannelLayer',
            'CONFIG': {'hosts': [REDIS_URL]},
        }
    }
else:
    CHANNEL_LAYERS = {
        'default': {
            'BACKEND': 'channels.layers.InMemoryChannelLayer',
        }
    }

# ---------------------------------------------------------------------------
# Market Data Configuration
# ---------------------------------------------------------------------------
MARKET_DATA_PROVIDER          = config('MARKET_DATA_PROVIDER', default='simulator')
MARKET_DATA_API_KEY           = config('MARKET_DATA_API_KEY', default='')
WS_HEARTBEAT_INTERVAL         = config('WS_HEARTBEAT_INTERVAL', default=15, cast=int)
WS_RECONNECT_BASE_SECONDS     = config('WS_RECONNECT_BASE_SECONDS', default=2, cast=int)
REST_FALLBACK_INTERVAL_SECONDS = config('REST_FALLBACK_INTERVAL_SECONDS', default=5, cast=int)

# ---------------------------------------------------------------------------
# Live News Configuration (Marketaux)
# ---------------------------------------------------------------------------
# Free tier: 100 requests/day — https://www.marketaux.com/
# Set MARKETAUX_API_KEY in backend/.env — loaded automatically by python-decouple.
MARKETAUX_API_KEY = config('MARKETAUX_API_KEY', default='')

# Django REST Framework Configuration
REST_FRAMEWORK = {
    '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_THROTTLE_CLASSES': [
        'rest_framework.throttling.AnonRateThrottle',
        'rest_framework.throttling.UserRateThrottle',
    ],
    'DEFAULT_THROTTLE_RATES': {
        'anon': '100/hour',
        'user': '1000/hour',
        # The live UI polls every 5 seconds only while WebSocket is unavailable.
        'market_data': '5000/hour',
    },
    'DEFAULT_SCHEMA_CLASS': 'drf_spectacular.openapi.AutoSchema',
    'DEFAULT_AUTHENTICATION_CLASSES': [
        'rest_framework_simplejwt.authentication.JWTAuthentication',
    ],
}

# ---------------------------------------------------------------------------
# SimpleJWT Configuration
# ---------------------------------------------------------------------------
SIMPLE_JWT = {
    'ACCESS_TOKEN_LIFETIME':  timedelta(minutes=60),
    'REFRESH_TOKEN_LIFETIME': timedelta(days=7),
    'ROTATE_REFRESH_TOKENS':  True,
    'BLACKLIST_AFTER_ROTATION': True,
    'AUTH_HEADER_TYPES': ('Bearer',),
    'USER_ID_FIELD': 'id',
    'USER_ID_CLAIM': 'user_id',
}

# ---------------------------------------------------------------------------
# Authentication integrations and registration email
# ---------------------------------------------------------------------------
# The browser obtains a Google Identity Services credential and the backend
# verifies its audience/signature before issuing the existing SimpleJWT pair.
GOOGLE_OAUTH_CLIENT_ID = config('GOOGLE_OAUTH_CLIENT_ID', default='')

# Console email keeps local development safe. Production should switch this to
# Django's SMTP backend and provide the SMTP values shown in backend/.env.example.
EMAIL_BACKEND = config(
    'EMAIL_BACKEND',
    default='django.core.mail.backends.console.EmailBackend',
)
EMAIL_HOST = config('EMAIL_HOST', default='')
EMAIL_PORT = config('EMAIL_PORT', default=587, cast=int)
EMAIL_USE_TLS = config('EMAIL_USE_TLS', default=True, cast=bool)
EMAIL_USE_SSL = config('EMAIL_USE_SSL', default=False, cast=bool)
EMAIL_HOST_USER = config('EMAIL_HOST_USER', default='')
EMAIL_HOST_PASSWORD = config('EMAIL_HOST_PASSWORD', default='')
DEFAULT_FROM_EMAIL = config(
    'DEFAULT_FROM_EMAIL',
    default='TheStarFX <noreply@thestarfx.com>',
)

# DRF Spectacular Configuration
SPECTACULAR_SETTINGS = {
    'TITLE': 'TheStarFX Trading API',
    'DESCRIPTION': 'Premium Forex & Crypto Trading Education Platform API',
    'VERSION': '1.0.0',
    'SERVE_PERMISSIONS': ['rest_framework.permissions.AllowAny'],
    'SCHEMA_PATH_PREFIX': '/api/',
}

# CORS Configuration
CORS_ALLOWED_ORIGINS = config('CORS_ALLOWED_ORIGINS', default='http://localhost:8000,http://localhost:3000,http://localhost:3001,http://localhost:8080,http://127.0.0.1:8000,http://127.0.0.1:3000,http://127.0.0.1:3001', cast=Csv())

CSRF_TRUSTED_ORIGINS = [
    origin
    for origin in config('CSRF_TRUSTED_ORIGINS', default='', cast=Csv())
    if origin
]

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

# Nginx terminates TLS and forwards the original scheme to Uvicorn.
SECURE_PROXY_SSL_HEADER = ('HTTP_X_FORWARDED_PROTO', 'https')
SECURE_SSL_REDIRECT = config('SECURE_SSL_REDIRECT', default=False, cast=bool)
SESSION_COOKIE_SECURE = config('SESSION_COOKIE_SECURE', default=False, cast=bool)
CSRF_COOKIE_SECURE = config('CSRF_COOKIE_SECURE', default=False, cast=bool)
SECURE_HSTS_SECONDS = config('SECURE_HSTS_SECONDS', default=0, cast=int)
SECURE_HSTS_INCLUDE_SUBDOMAINS = config(
    'SECURE_HSTS_INCLUDE_SUBDOMAINS', default=False, cast=bool
)
SECURE_HSTS_PRELOAD = config('SECURE_HSTS_PRELOAD', default=False, cast=bool)
SECURE_CONTENT_TYPE_NOSNIFF = True
SECURE_REFERRER_POLICY = 'strict-origin-when-cross-origin'

# Logging Configuration
LOGGING = {
    'version': 1,
    'disable_existing_loggers': False,
    'handlers': {
        'console': {
            'class': 'logging.StreamHandler',
        },
    },
    'root': {
        'handlers': ['console'],
        'level': 'INFO',
    },
    'loggers': {
        'django': {
            'handlers': ['console'],
            'level': 'INFO',
            'propagate': False,
        },
        'base': {
            'handlers': ['console'],
            'level': 'INFO',
            'propagate': False,
        },
    },
}

# ---------------------------------------------------------------------------
# Jazzmin Admin UI Configuration
# ---------------------------------------------------------------------------
JAZZMIN_SETTINGS = {
    # ── Branding ────────────────────────────────────────────────────────────
    'site_title': 'TheStarFX Admin',
    'site_header': 'TheStarFX',
    'site_brand': '⭐ TheStarFX',
    'site_logo': None,                   # Replace with 'img/logo.png' if you add one
    'login_logo': None,
    'login_logo_dark': None,
    'site_logo_classes': 'img-circle',
    'site_icon': None,
    'welcome_sign': 'Welcome to The Star FX Admin Panel',
    'copyright': 'TheStarFX Trading Platform',

    # ── Search ──────────────────────────────────────────────────────────────
    'search_model': ['auth.user'],
    'user_avatar': None,

    # ── Top Menu ────────────────────────────────────────────────────────────
    'topmenu_links': [
        {'name': 'Home', 'url': 'admin:index', 'permissions': ['auth.view_user']},
        {'name': 'View Site', 'url': '/', 'new_window': True},
        {'name': 'API Docs', 'url': '/api/schema/swagger-ui/', 'new_window': True},
        {'model': 'auth.User'},
    ],

    # ── User Menu ───────────────────────────────────────────────────────────
    'usermenu_links': [
        {'model': 'auth.user'},
    ],

    # ── Sidebar ─────────────────────────────────────────────────────────────
    'show_sidebar': True,
    'navigation_expanded': True,
    'hide_apps': [],
    'hide_models': [],
    'order_with_respect_to': [
        'auth',
        'base',
        'base.Bot',
        'base.ForexPair',
        'base.Signal',
        'base.News',
        'base.Lesson',
        'base.Testimonial',
        'base.LeaderboardEntry',
    ],

    # ── Custom Links ────────────────────────────────────────────────────────
    'custom_links': {
        'base': [{
            'name': 'Market Signals',
            'url': 'admin:base_signal_changelist',
            'icon': 'fas fa-broadcast-tower',
            'permissions': ['base.view_signal'],
        }],
    },

    # ── Icons (Font Awesome 5) ───────────────────────────────────────────────
    'icons': {
        'auth':                       'fas fa-users-cog',
        'auth.user':                  'fas fa-user',
        'auth.Group':                 'fas fa-users',
        'base.Bot':                   'fas fa-robot',
        'base.ForexPair':             'fas fa-chart-line',
        'base.Signal':                'fas fa-broadcast-tower',
        'base.News':                  'fas fa-newspaper',
        'base.Lesson':                'fas fa-graduation-cap',
        'base.Testimonial':           'fas fa-star',
        'base.LeaderboardEntry':      'fas fa-trophy',
    },
    'default_icon_parents': 'fas fa-folder',
    'default_icon_children': 'fas fa-circle',

    # ── Related Modal ────────────────────────────────────────────────────────
    'related_modal_active': True,

    # ── UI Customizer ────────────────────────────────────────────────────────
    'custom_css': None,
    'custom_js': None,
    'use_google_fonts_cdn': True,
    'show_ui_builder': False,

    # ── Change List ──────────────────────────────────────────────────────────
    'changeform_format': 'horizontal_tabs',
    'changeform_format_overrides': {
        'auth.user': 'collapsible',
        'auth.group': 'vertical_tabs',
    },
    'language_chooser': False,
}

JAZZMIN_UI_TWEAKS = {
    # ── Theme ────────────────────────────────────────────────────────────────
    'navbar_small_text': False,
    'footer_small_text': False,
    'body_small_text': False,
    'brand_small_text': False,
    'brand_colour': 'navbar-warning',       # Gold/amber brand accent
    'accent': 'accent-warning',             # Gold highlights
    'navbar': 'navbar-dark',
    'no_navbar_border': True,
    'navbar_fixed': True,
    'layout_boxed': False,
    'footer_fixed': False,
    'sidebar_fixed': True,
    'sidebar': 'sidebar-dark-warning',      # Dark gold sidebar
    'sidebar_nav_small_text': False,
    'sidebar_disable_expand': False,
    'sidebar_nav_child_indent': True,
    'sidebar_nav_compact_style': False,
    'sidebar_nav_legacy_style': False,
    'sidebar_nav_flat_style': False,
    'theme': 'darkly',                      # Bootswatch dark theme
    'default_theme_mode': 'dark',           # Replaces deprecated dark_mode_theme
    'button_classes': {
        'primary':   'btn-outline-primary',
        'secondary': 'btn-outline-secondary',
        'info':      'btn-info',
        'warning':   'btn-warning',
        'danger':    'btn-danger',
        'success':   'btn-success',
    },
    'actions_sticky_top': True,
}