.env.example

# Environment Variables
DATABASE_URL=postgresql://user:password@localhost:5432/propchain
PORT=3000
NODE_ENV=development
FRONTEND_URL=http://localhost:3000

# JWT Configuration
JWT_SECRET=your-super-secret-jwt-key-change-in-production
JWT_REFRESH_SECRET=your-super-secret-refresh-key-change-in-production
JWT_ACCESS_EXPIRES_IN=15m
JWT_REFRESH_EXPIRES_IN=7d

# Security Configuration
BCRYPT_ROUNDS=12
PASSWORD_HISTORY_LIMIT=5

# Database Backup Management
BACKUP_STORAGE_PATH=./backups
PG_DUMP_PATH=pg_dump
PSQL_PATH=psql
# Google OAuth2
GOOGLE_CLIENT_ID=your-google-client-id
GOOGLE_CLIENT_SECRET=your-google-client-secret
GOOGLE_CALLBACK_URL=http://localhost:3000/api/auth/google/callback

# Blockchain Configuration
BLOCKCHAIN_ENABLED=true
BLOCKCHAIN_NETWORK=sepolia
BLOCKCHAIN_RPC_URL=https://sepolia.infura.io/v3/YOUR_INFURA_KEY
BLOCKCHAIN_CONTRACT_ADDRESS=0x0000000000000000000000000000000000000000
BLOCKCHAIN_PRIVATE_KEY=your-wallet-private-key

# Property Image Uploads
PROPERTY_IMAGES_UPLOAD_DIR=./uploads/properties
PROPERTY_IMAGE_MAX_SIZE=10485760
PROPERTY_IMAGE_MAX_PER_PROPERTY=30
BASE_URL=http://localhost:3000

# Geocoding
# Provider: 'nominatim' (default, free) or 'google' (requires GOOGLE_GEOCODING_API_KEY).
# When GOOGLE_GEOCODING_API_KEY is set, 'google' is auto-selected unless
# GEOCODING_PROVIDER is explicitly set to 'nominatim'.
GEOCODING_PROVIDER=nominatim
NOMINATIM_BASE_URL=https://nominatim.openstreetmap.org
GEOCODING_USER_AGENT=PropChain-Backend/1.0 (geocoding)
GEOCODING_TIMEOUT_MS=5000
# GOOGLE_GEOCODING_API_KEY=