"""
Self-hosted settings for KeepItGoing.

Use this for users running their own instance.
"""

import os
import sys
from .base import *

# Security
SECRET_KEY = os.environ.get('SECRET_KEY')
if not SECRET_KEY:
    raise ValueError(
        "SECRET_KEY environment variable is required for self-hosted deployment. "
        "Generate one with: python -c \"from django.core.management.utils import get_random_secret_key; print(get_random_secret_key())\""
    )

# Validate SECRET_KEY strength
if len(SECRET_KEY) < 50:
    print("WARNING: SECRET_KEY is too short. Use at least 50 characters for security.", file=sys.stderr)

DEBUG = os.environ.get('DEBUG', 'False').lower() == 'true'

# Force DEBUG to False in self-hosted mode for security
if DEBUG:
    print("WARNING: DEBUG=True in self-hosted mode is a security risk!", file=sys.stderr)

ALLOWED_HOSTS = os.environ.get('ALLOWED_HOSTS', 'localhost,127.0.0.1').split(',')

# Database - PostgreSQL for self-hosted
DATABASES = {
    'default': {
        'ENGINE': 'django.db.backends.postgresql',
        'NAME': os.environ.get('POSTGRES_DB', 'keepitgoing'),
        'USER': os.environ.get('POSTGRES_USER', 'keepitgoing'),
        'PASSWORD': os.environ.get('POSTGRES_PASSWORD', 'keepitgoing'),
        'HOST': os.environ.get('POSTGRES_HOST', 'db'),
        'PORT': os.environ.get('POSTGRES_PORT', '5432'),
    }
}

# Redis/Celery
REDIS_URL = os.environ.get('REDIS_URL', 'redis://redis:6379/0')
CELERY_BROKER_URL = REDIS_URL
CELERY_RESULT_BACKEND = REDIS_URL

# Cache
CACHES = {
    'default': {
        'BACKEND': 'django.core.cache.backends.redis.RedisCache',
        'LOCATION': REDIS_URL,
    }
}

# CORS - configurable for self-hosted
CORS_ALLOWED_ORIGINS = os.environ.get(
    'CORS_ALLOWED_ORIGINS',
    'http://localhost:8000'
).split(',')

# Static files
STATICFILES_STORAGE = 'whitenoise.storage.CompressedManifestStaticFilesStorage'

# Email - configurable
EMAIL_BACKEND = 'django.core.mail.backends.smtp.EmailBackend'
EMAIL_HOST = os.environ.get('EMAIL_HOST', '')
EMAIL_PORT = int(os.environ.get('EMAIL_PORT', 587))
EMAIL_HOST_USER = os.environ.get('EMAIL_HOST_USER', '')
EMAIL_HOST_PASSWORD = os.environ.get('EMAIL_HOST_PASSWORD', '')
EMAIL_USE_TLS = os.environ.get('EMAIL_USE_TLS', 'True').lower() == 'true'
DEFAULT_FROM_EMAIL = os.environ.get('DEFAULT_FROM_EMAIL', 'noreply@localhost')

# Self-hosted mode - no billing
SAAS_MODE = False
BILLING_ENABLED = False
USAGE_LIMITS_ENABLED = False

# Logging
LOGGING = {
    'version': 1,
    'disable_existing_loggers': False,
    'formatters': {
        'verbose': {
            'format': '{levelname} {asctime} {module} {message}',
            'style': '{',
        },
    },
    'handlers': {
        'console': {
            'class': 'logging.StreamHandler',
            'formatter': 'verbose',
        },
    },
    'root': {
        'handlers': ['console'],
        'level': 'INFO',
    },
}