# CONFIGURATION GUIDE

[← Project Structure](./02-project-structure.md) | [Next: Development Guide →](./04-development-guide.md)

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## Environment Variables

### Backend (.env)

```env
# Data Mode
DATA_MODE=demo  # hoặc 'mongodb'

# MongoDB (chỉ cần khi DATA_MODE=mongodb)
MONGODB_URI=mongodb://localhost:27017/amom

# JWT
JWT_SECRET=your-secret-key
JWT_EXPIRES_IN=7d

# Server
PORT=3000
NODE_ENV=development

# CORS
CORS_ORIGIN=http://localhost:5173
```

### Frontend (.env)

```env
VITE_API_URL=http://localhost:3000/api
```

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## Configuration Files

- `src/config/data.config.ts` - Data layer configuration
- `src/config/jwt.ts` - JWT configuration
- `src/config/env.ts` - Environment variables

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**Next**: [Development Guide](./04-development-guide.md)