🛒 ShopPulse — E-Commerce Backend API

A scalable and production-ready e-commerce backend API built with Node.js, Express, TypeScript, and MongoDB. ShopPulse provides a complete backend solution for managing users, products, inventory, shopping carts, orders, payments, and business analytics.

The system is designed with modern backend practices including JWT authentication, role-based authorization, validation, caching, automated jobs, and RESTful API architecture.

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📌 Overview

ShopPulse includes:

• 🔐 Secure user authentication and authorization
• 🛍️ Product and inventory management
• 🛒 Shopping cart operations
• 📦 Order processing and checkout workflow
• 💳 Payment integration support
• 👨‍💼 Admin dashboard and analytics
• 📊 Automated daily sales reporting
• ⚡ Redis caching for improved performance

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🌟 Features

🔐 Authentication & Authorization

• JWT-based authentication
• Role-based access control:
  • User
  • Admin
  • Manager
• Password hashing using bcrypt
• Protected API routes
• Secure middleware architecture

Example:

router.get(
  "/admin/dashboard",
  requireAdmin,
  dashboardController
);
🛒 Core Features
Feature	Description	Endpoint
User Registration	Create new user accounts	POST /auth/register
Authentication	Login and receive JWT token	POST /auth/login
Product Catalog	Create, update, delete products	GET /products
Shopping Cart	Add/remove items and update quantity	PATCH /cart/items/:id
Orders	Checkout and order processing	POST /orders
Coupons	Apply discount codes	POST /coupons/apply
📊 Analytics System

ShopPulse provides business intelligence features including:

Real-time sales analytics
Daily automated sales snapshots
Product performance tracking
Revenue trend analysis
Historical sales reports

Example response:

{
  "totalSales": 4529.99,
  "topProducts": [
    {
      "name": "Wireless Earbuds",
      "revenue": 1299.95
    }
  ]
}
🛠️ Tech Stack
Backend
Node.js
Express.js
TypeScript
MongoDB
Mongoose ODM
Zod Validation
Redis Caching
JWT Authentication
bcrypt Password Hashing
Frontend Ready

Compatible with:

React
Vue.js

Includes:

JWT authentication flow
API-ready architecture
Frontend integration support
🚀 Installation
Clone Repository
git clone https://github.com/yourrepo/shoppulse.git

cd shoppulse
Install Dependencies
npm install
Environment Setup

Create your environment file:

cp .env.example .env

Configure:

MONGO_URI=
JWT_SECRET=
REDIS_URL=
PAYMENT_SECRET=
Run Application

Development:

npm run dev

Production:

npm start
📂 Project Structure
src/
├── config/          # Environment and database configuration
├── controllers/     # Request handlers
├── models/          # MongoDB schemas
├── routes/          # API routes
├── services/        # Business logic
├── middleware/      # Authentication and validation middleware
├── types/           # TypeScript definitions
├── utils/           # Helper functions
└── validators/      # Zod schemas
🔧 Example Implementation
Product Schema
const productSchema = new Schema({
  name: {
    type: String,
    required: true
  },
  price: {
    type: Number,
    required: true
  }
});
JWT Authentication
const token = jwt.sign(
  {
    userId: user._id
  },
  process.env.JWT_SECRET!
);
📈 Automated Analytics Jobs

Daily sales snapshots are generated automatically using scheduled background jobs.

Example:

cron.schedule(
  "0 0 * * *",
  async () => {
    await generateDailySnapshot();
  }
);
🧪 Testing

Run tests:

npm test

Testing covers:

API endpoint validation
Authentication flows
Payment workflows
Error handling scenarios
🌐 API Documentation

Swagger API documentation available at:

http://localhost:3000/api-docs
🚨 Troubleshooting

Common issues:

MongoDB Connection Errors

Check:

Database credentials
Connection string
Network access settings
JWT Errors

Verify:

JWT secret
Token expiration settings
Validation Errors

Review:

Request payload format
Zod validation schemas
🤝 Contributing
Fork the repository
Create a feature branch:
git checkout -b feature/new-feature
Commit changes:
git commit -m "Add new feature"
Push branch:
git push origin feature/new-feature
Open a Pull Request
📜 License

MIT License

See LICENSE for details.

Built with ❤️ using Node.js, TypeScript, and MongoDB.


For the **GitHub repository short description**, I would use:

> **A scalable e-commerce REST API built with Node.js, Express, TypeScript, MongoDB, JWT authentication, Redis caching, payments, and analytics.**

It fits well as a backend portfolio project.