• User Authentication & Authorization

  • Secure user registration and login with JWT tokens
  • Role-based access control (USER, ADMIN, EMPLOYEE, MANAGER)
  • Password encryption using bcryptjs
  • Protected routes with middleware authentication

• Employee Profiles

  • Complete employee information management
  • Registration number tracking
  • Department and position assignment
  • Employee status management (Active/Inactive)

• Leave Request Processing

  • Multiple leave categories (Sick, Casual, Annual, Unpaid, Emergency, Others)
  • Comprehensive leave status tracking
  • Approval workflow with manager/admin oversight
  • Leave modification and change requests
  • Detailed leave history and reporting

• Advanced Leave Features

  • Search and filter functionality
  • Pagination for large datasets
  • Date range filtering
  • Employee search by registration number
  • Automated leave calculations

• Product Management

  • Product catalog with categories (Clothing, Electronics, Books, Other)
  • Image upload support with Multer
  • Stock management
  • Price tracking
  • Product search and filtering

• Shopping Cart System

  • Add/remove items from cart
  • Quantity management
  • Wishlist functionality
  • Cart persistence per user
  • Automatic total calculation

• Order Processing

  • Complete order management
  • Multiple payment methods (COD, Credit Card, Debit Card, UPI, Net Banking, Wallet)
  • Order status tracking (Pending, Confirmed, Processing, Shipped, Delivered, Cancelled)
  • Shipping address management
  • Order history and tracking

• Node.js - Runtime environment
• Express.js - Web framework
• MongoDB - Database
• Mongoose - ODM for MongoDB
• JWT - Authentication tokens
• bcryptjs - Password hashing
• Multer - File upload handling
• CORS - Cross-origin resource sharing

• React Hooks - State management (useCart.js)
• CSS - Styling (CartItems.css)
• JavaScript - Client-side logic

server/
├── db/
│   ├── index.js                 # Database connection
│   └── models/
│       ├── user_schema.js       # User/Employee model
│       ├── employee_schema.js   # Employee details model
│       ├── leave_schema.js      # Leave request model
│       ├── product_schema.js    # Product catalog model
│       ├── cart-schema.js       # Shopping cart model
│       └── order-schema.js      # Order management model
├── routes/
│   ├── index.js                 # Main router configuration
│   ├── user_routes.js           # Authentication routes
│   ├── leave_routes_clean.js    # Leave management routes
│   ├── product_routes.js        # Product management routes
│   ├── cart_routes.js           # Shopping cart routes
│   └── order_routes.js          # Order processing routes
├── middleware/
│   ├── auth.js                  # JWT authentication middleware
│   └── check-token.js           # Token validation middleware
├── hooks/
│   └── useCart.js               # React cart hook
├── public/
│   └── uploads/                 # File upload directory
├── server.js                    # Main server file
└── package.json                 # Dependencies and scripts

1. Clone the repository

   git clone <repository-url>
   cd server

2. Install dependencies

   npm install

3. Environment Configuration Create a .env file in the root directory:

   PORT=3000
   JWT_SECRET=your_jwt_secret_key
   MONGODB_URI=your_mongodb_connection_string

4. Start the development server

   npm run dev

• POST /api/auth/register - User registration
• POST /api/auth/login - User login

• GET /api/leave/search-employee - Search employees by registration number
• GET /api/leave/leavespopulated - Get all leave requests with filters

• POST /api/leave/ - Create leave request
• GET /api/leave/all-leaves - Get all leave requests
• PUT /api/leave/:id/status - Update leave status
• GET /api/leave/:id - Get single leave request

• POST /api/products/ - Create product
• GET /api/products/ - Get all products with filters
• GET /api/products/:id - Get single product
• PUT /api/products/:id - Update product
• DELETE /api/products/:id - Delete product

• POST /api/cart/add - Add item to cart
• GET /api/cart/ - Get user's cart
• PUT /api/cart/update - Update cart item quantity
• DELETE /api/cart/remove - Remove item from cart

• POST /api/orders/ - Create order
• GET /api/orders/ - Get user's orders
• GET /api/orders/:id - Get single order
• PUT /api/orders/:id/status - Update order status

• JWT-based authentication
• Password hashing with bcryptjs
• Role-based access control
• Protected API endpoints
• Input validation and sanitization
• CORS configuration

The backend is designed to work seamlessly with React frontend components:

• CartItems.js - Shopping cart interface
• CartPage.js - Cart management page
• ViewLevRequest.js - Leave request viewer
• Custom React hooks for state management

The application is ready for deployment on platforms like:

• Heroku
• AWS
• DigitalOcean
• Vercel
• Railway

1. Fork the repository
2. Create a feature branch
3. Commit your changes
4. Push to the branch
5. Create a Pull Request

This project is licensed under the ISC License.

Built with ❤️ for efficient employee and e-commerce management.

Note: This system provides a complete solution for organizations that need both employee management and e-commerce capabilities in a single integrated platform.