.env.example

# Server Configuration
PORT=8080

# Firebase Configuration
FIREBASE_PROJECT_ID=your-project-id
FIREBASE_BUCKET_NAME=your-project-id.appspot.com

# Firebase Credentials (choose one method)
# Method 1: File path (for local development and Docker)
FIREBASE_CREDENTIALS_PATH=firebase-service-account.json

# Method 2: JSON string (for Vercel and other serverless platforms)
# FIREBASE_CREDENTIALS_JSON={"type":"service_account","project_id":"..."}

# Firestore Configuration
FIRESTORE_COLLECTION=images

# Cache Configuration
# Note: Reduced to 15m for serverless (matches signed URL expiration)
CACHE_TTL=15m
CACHE_CLEANUP_INTERVAL=10m

# API Security (REQUIRED)
# Generate secure random keys with: openssl rand -hex 32
# Comma-separated list of valid API keys for authentication
# ALL endpoints except /health require authentication
API_KEYS=your-secure-key-1,your-secure-key-2

# CORS Configuration
# Use "*" for development, restrict to specific origins in production
ALLOWED_ORIGINS=*

# Google Drive Sync Configuration (optional - only needed for sync functionality)
# The folder ID from your Google Drive folder URL
# Example: https://drive.google.com/drive/folders/FOLDER_ID_HERE
GOOGLE_DRIVE_FOLDER_ID=

# Google Drive Authentication (choose one method)
# Method 1: API Key (simpler, read-only access)
GOOGLE_API_KEY=

# Method 2: Service Account (same as Firebase, requires folder sharing)
# Use the Firebase credentials configured above

# Background Drive Sync (runs automatically when server starts)
# Set to true to enable automatic syncing of new files from Google Drive
ENABLE_DRIVE_SYNC=false

# How often to check Google Drive for new files (examples: 5m, 10m, 1h)
DRIVE_SYNC_INTERVAL=5m

# Run one-time backfill on server startup (syncs all existing Drive files before starting watch)
# Useful for initial setup or after adding new files manually to Drive
DRIVE_BACKFILL_ON_STARTUP=false