Hotel-Booking/docs/SERVER_SETUP_COMPLETE.md

✅ Server Backend - Setup Complete

📦 Files Created

Core Server Files

1. .env - Environment configuration (with passwords and secrets)
2. src/server.js - Server entry point with database connection
3. src/app.js - Express application setup with middleware

Controllers

4. src/controllers/authController.js - Authentication logic
   • register()
   • login()
   • refreshAccessToken()
   • logout()
   • getProfile()

Routes

5. src/routes/authRoutes.js - Auth endpoints

   • POST /api/auth/register
   • POST /api/auth/login
   • POST /api/auth/refresh-token
   • POST /api/auth/logout
   • GET /api/auth/profile

6. src/routes/userRoutes.js - User endpoints (placeholder)

7. src/routes/roomRoutes.js - Room endpoints (placeholder)

8. src/routes/bookingRoutes.js - Booking endpoints (placeholder)

Middleware

9. src/middlewares/auth.js - JWT authentication

   • authenticateToken()
   • authorizeRoles()

10. src/middlewares/errorHandler.js - Global error handling

11. src/middlewares/validate.js - Validation middleware

Validators

12. src/validators/authValidator.js - Validation rules
    • registerValidation
    • loginValidation
    • refreshTokenValidation

Documentation

13. README.md - Server documentation
14. QUICK_START.md - Quick setup guide

🎯 Features Implemented

Security

• ✅ JWT authentication (access + refresh tokens)
• ✅ Password hashing with bcrypt (10 rounds)
• ✅ Helmet security headers
• ✅ CORS configuration
• ✅ Rate limiting (100 req/15min)
• ✅ Input validation with express-validator

Authentication Flow

• ✅ Register with email/password validation
• ✅ Login with email/password
• ✅ Remember me (7 days vs 1 day token expiry)
• ✅ Refresh token mechanism
• ✅ Logout with token cleanup
• ✅ Protected routes with JWT

Error Handling

• ✅ Global error handler
• ✅ Sequelize error handling
• ✅ JWT error handling
• ✅ Validation error formatting
• ✅ Development vs production error responses

Validation Rules

Register:

- name: 2-50 chars, required
- email: valid email format, required, unique
- password: min 8 chars, uppercase + lowercase + number
- phone: 10-11 digits, optional

Login:

- email: valid email format, required
- password: required
- rememberMe: boolean, optional

🗄️ Database Integration

Models Used

• ✅ User model (full_name, email, password, phone, role_id)
• ✅ Role model (for role-based access)
• ✅ RefreshToken model (token storage)

Associations

• User belongsTo Role
• User hasMany RefreshToken
• User hasMany Booking

🔐 JWT Configuration

Access Token:
- Secret: JWT_SECRET
- Expiry: 1h
- Payload: { userId }

Refresh Token:
- Secret: JWT_REFRESH_SECRET
- Expiry: 7d (remember me) or 1d (normal)
- Payload: { userId }
- Stored in database (refresh_tokens table)

📡 API Endpoints Ready

Public Endpoints

✅ GET  /health                    - Health check
✅ POST /api/auth/register         - User registration
✅ POST /api/auth/login            - User login
✅ POST /api/auth/refresh-token    - Refresh access token
✅ POST /api/auth/logout           - User logout

Protected Endpoints

✅ GET  /api/auth/profile          - Get user profile (JWT required)
🔜 GET  /api/users                 - Get all users (Admin only)
🔜 GET  /api/rooms                 - Get rooms (Public)
🔜 GET  /api/bookings              - Get bookings (User's own)

🧪 Request/Response Examples

Login Request

POST /api/auth/login
{
  "email": "user@example.com",
  "password": "Password123",
  "rememberMe": true
}

Login Response (Success)

{
  "status": "success",
  "message": "Login successful",
  "data": {
    "user": {
      "id": 1,
      "name": "John Doe",
      "email": "user@example.com",
      "phone": "0123456789",
      "role": "customer"
    },
    "token": "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9...",
    "refreshToken": "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9..."
  }
}

Login Response (Error)

{
  "status": "error",
  "message": "Invalid email or password"
}

Validation Error

{
  "status": "error",
  "message": "Validation failed",
  "errors": [
    {
      "field": "email",
      "message": "Invalid email format"
    },
    {
      "field": "password",
      "message": "Password must be at least 8 characters"
    }
  ]
}

🔧 Middleware Stack

1. helmet()              - Security headers
2. compression()         - Response compression
3. cors()               - CORS handling
4. express.json()       - JSON body parser
5. morgan()             - Request logging
6. rateLimit()          - Rate limiting
7. Routes               - API routes
8. errorHandler()       - Global error handler

⚙️ Environment Variables

# Server
PORT=3000
NODE_ENV=development

# Database
DB_HOST=localhost
DB_USER=root
DB_PASS=
DB_NAME=hotel_db

# JWT
JWT_SECRET=your-super-secret-jwt-key
JWT_EXPIRES_IN=1h
JWT_REFRESH_SECRET=your-refresh-token-secret
JWT_REFRESH_EXPIRES_IN=7d

# Client
CLIENT_URL=http://localhost:5173

📋 Next Steps (Manual)

1. Database Setup

# Create database
mysql -u root -p
CREATE DATABASE hotel_db;

# Run migrations
cd d:/hotel-booking/server
npm run migrate

# (Optional) Seed data
npm run seed

2. Start Server

cd d:/hotel-booking/server
npm run dev

Expected output:

✅ Database connection established successfully
📊 Database models synced
🚀 Server running on port 3000
🌐 Environment: development
🔗 API: http://localhost:3000/api
🏥 Health: http://localhost:3000/health

3. Test API

Health Check:

curl http://localhost:3000/health

Register:

curl -X POST http://localhost:3000/api/auth/register \
  -H "Content-Type: application/json" \
  -d '{
    "name": "Test User",
    "email": "test@example.com",
    "password": "Test1234",
    "phone": "0123456789"
  }'

Login:

curl -X POST http://localhost:3000/api/auth/login \
  -H "Content-Type: application/json" \
  -d '{
    "email": "test@example.com",
    "password": "Test1234",
    "rememberMe": true
  }'

4. Test with Frontend

1. Make sure client .env has:

   VITE_API_URL=http://localhost:3000
   

2. Start frontend:

   cd d:/hotel-booking/client
   npm run dev
   

3. Navigate to: http://localhost:5173/login

4. Try to login with credentials from step 3

🎯 Integration Checklist

• MySQL server running
• Database hotel_db created
• Migrations executed successfully
• Server running on port 3000
• Health endpoint returns 200
• Frontend .env configured
• Frontend running on port 5173
• Login API working with Postman/curl
• Frontend login form connects to backend
• JWT tokens stored in localStorage
• Protected routes work after login

🔍 Troubleshooting

Server won't start

• Check MySQL is running
• Check .env database credentials
• Check port 3000 is not in use

Login returns 401

• Check email/password are correct
• Check user exists in database
• Check JWT_SECRET in .env

CORS errors in frontend

• Check CLIENT_URL in server .env
• Check frontend is using correct API URL
• Check server CORS middleware

Token expired immediately

• Check JWT_EXPIRES_IN in .env
• Check system clock is correct
• Check refresh token mechanism

📚 Code Quality

• ✅ Proper error handling with try-catch
• ✅ Async/await pattern
• ✅ Input validation before processing
• ✅ Password never returned in responses
• ✅ Proper HTTP status codes
• ✅ Consistent API response format
• ✅ Environment-based logging
• ✅ Rate limiting for security
• ✅ Token expiry management
• ✅ Database connection pooling

---

Status: ✅ Backend Setup Complete
Next: Run migrations → Start server → Test login from frontend
Time to complete: ~5 minutes manual setup

🎉 Congratulations! Backend API is ready for testing!