ECOM MVP Backend (MERN)

A simple e-commerce backend built with MongoDB, Express, and Node.js.
Handles users, products, carts, and orders with JWT authentication and email verification.

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Features

• User Authentication
  • Register, login, and email verification
  • JWT-based route protection
• Products
  • Admin can create, update, delete products
  • All users can view products
  • Supports filtering (category, price) and sorting (price, name, createdAt)
• Cart
  • Add, update, remove, or clear items
  • Cart is tied to a specific user
• Orders
  • Checkout cart and create order
  • Stock is updated on checkout
• Validation & Error Handling
  • Joi validation for requests
  • Global error handling middleware
• Environment Config
  • .env with MongoDB, JWT, and email settings
• Security
  • Admin routes protected by isAdmin middleware
  • Users cannot buy more than available stock

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Environment Variables (.env)

# Server
PORT=5000
NODE_ENV=development

# MongoDB
MONGO_URI=your_mongodb_connection_string

# JWT
JWT_SECRET_KEY=your_jwt_secret_key

# Email (Nodemailer)
EMAIL_USER=your_email@example.com
EMAIL_PASS=your_email_password


## API Routes 

## Auth

### POST `/api/auth/register`
Register a new user.

### POST `/api/auth/login`
Login a user and return a JWT token.

### GET `/api/auth/verify-email/`
Verify a user's email using the verification code.

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## Products

### GET `/api/products`
List all products. Supports optional query filters: category, minPrice, maxPrice, and sorting.

### GET `/api/products/:id`
Retrieve a single product by its ID.

### POST `/api/products` (Admin only)
Create a new product.

### PUT `/api/products/:id` (Admin only)
Update an existing product.

### DELETE `/api/products/:id` (Admin only)
Delete a product.

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## Cart

### GET `/api/cart`
Retrieve the current user's cart.

### POST `/api/cart/add`
Add a product to the cart.

### PUT `/api/cart/update`
Update the quantity of a product in the cart.

### DELETE `/api/cart/delete`
Remove a product from the cart.

### DELETE `/api/cart/clear`
Clear all items from the cart.

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## Orders

### POST `/api/orders/checkout`
Checkout the current cart, create an order, and update product stock.