import os
from pathlib import Path

BASE_DIR = Path(__file__).resolve().parent.parent

SECRET_KEY = os.environ.get(
    'SECRET_KEY',
    'django-insecure-social-graph-dev-key-change-in-production',
)
DEBUG = os.environ.get('DEBUG', 'True').lower() in ('1', 'true', 'yes')
ALLOWED_HOSTS = [
    h.strip() for h in os.environ.get('ALLOWED_HOSTS', '*').split(',') if h.strip()
]

ENABLED_PLUGINS = [
    p.strip()
    for p in os.environ.get('ENABLED_PLUGINS', 'tags').split(',')
    if p.strip()
]

INSTALLED_APPS = [
    'django.contrib.contenttypes',
    'django.contrib.auth',
    'django.contrib.staticfiles',
    'rest_framework',
    'corsheaders',
    'drf_spectacular',
    'core',
    'contacts',
    'graph',
    'import_export',
    'plugins',
    'plugins_tags',
]

MIDDLEWARE = [
    'corsheaders.middleware.CorsMiddleware',
    'django.middleware.common.CommonMiddleware',
]

ROOT_URLCONF = 'config.urls'

DATABASES = {
    'default': {
        'ENGINE': 'django.db.backends.sqlite3',
        'NAME': os.environ.get('DATABASE_PATH', str(BASE_DIR / 'db.sqlite3')),
    }
}

STATIC_URL = '/static/'
STATIC_ROOT = BASE_DIR / 'staticfiles'

REST_FRAMEWORK = {
    'DEFAULT_PAGINATION_CLASS': 'rest_framework.pagination.PageNumberPagination',
    'PAGE_SIZE': 100,
    'DEFAULT_SCHEMA_CLASS': 'drf_spectacular.openapi.AutoSchema',
}

SPECTACULAR_SETTINGS = {
    'TITLE': 'Social Graph API',
    'DESCRIPTION': 'API for Social Graph Builder (local-first with optional remote backend)',
    'VERSION': '1.0.0',
}

CORS_ALLOW_ALL_ORIGINS = True

DATA_UPLOAD_MAX_MEMORY_SIZE = 20 * 1024 * 1024

DEFAULT_AUTO_FIELD = 'django.db.models.BigAutoField'

# Phase C: optional JWT auth (disabled by default)
USE_JWT_AUTH = os.environ.get('USE_JWT_AUTH', 'false').lower() in ('1', 'true', 'yes')

if USE_JWT_AUTH:
    REST_FRAMEWORK['DEFAULT_AUTHENTICATION_CLASSES'] = [
        'rest_framework_simplejwt.authentication.JWTAuthentication',
    ]
    REST_FRAMEWORK['DEFAULT_PERMISSION_CLASSES'] = [
        'rest_framework.permissions.IsAuthenticated',
    ]

DEFAULT_WORKSPACE_ID = os.environ.get('DEFAULT_WORKSPACE_ID', 'personal')