🎓 Course Selling Backend API

A robust and scalable RESTful API backend for a course selling platform built with Node.js, Express, and MongoDB. This application provides comprehensive user authentication, admin course management, and purchase tracking capabilities.

✨ Features

🔐 Authentication & Authorization

• User Authentication: Secure signup and signin with JWT tokens
• Admin Authentication: Separate admin authentication system with elevated privileges
• Token-based Security: JSON Web Tokens for secure API access

👥 User Management

• User registration and login
• View purchased courses
• Purchase course functionality

🎯 Admin Features

• Admin registration and login
• Create and manage courses
• Course content management (title, description, price, images)

📚 Course Management

• Course creation and listing
• Course preview for users
• Purchase tracking and management

🛠️ Tech Stack

• Backend: Node.js, Express.js
• Database: MongoDB with Mongoose ODM
• Authentication: JWT (JSON Web Tokens)
• Development: Nodemon for hot reloading

🚀 Quick Start

Prerequisites

• Node.js (v14 or higher)
• MongoDB database
• npm or yarn

Installation

1. Clone the repository

   git clone <repository-url>
   cd course-selling-backend

2. Install dependencies

   npm install

3. Environment Setup

   • Update the MongoDB connection string in index.js
   • Configure JWT secrets in config/config.js

4. Start the application

   # Development mode
   npm run dev
   
   # Production mode
   npm start

The server will start on http://localhost:3000

📡 API Endpoints

User Routes

• POST /user/signup - Register a new user
• POST /user/signin - User login
• GET /user/purchases - View purchased courses
• POST /user/purchases - Purchase a course

Admin Routes

• POST /admin/signup - Register a new admin
• POST /admin/signin - Admin login
• POST /admin/course - Create a new course (admin only)
• GET /admin/course - View courses (admin only)

Course Routes

• GET /course/preview - Preview available courses
• POST /course/purchases - Purchase a course

🏗️ Project Structure

course-selling-backend/
├── config/
│   └── config.js          # JWT configuration
├── db/
│   └── db.js              # Database models and schemas
├── middlewares/
│   ├── admin.middleware.js # Admin authentication middleware
│   └── user.middlewares.js # User authentication middleware
├── routes/
│   ├── admin.route.js     # Admin-related routes
│   ├── courses.route.js   # Course-related routes
│   └── user.route.js      # User-related routes
├── index.js               # Main application entry point
├── package.json           # Project dependencies and scripts
└── README.md              # This file

🗄️ Database Schema

User Model

{
  email: String (unique),
  password: String,
  firstname: String,
  lastName: String
}

Admin Model

{
  email: String (unique),
  password: String,
  firstname: String,
  lastName: String
}

Course Model

{
  title: String,
  desc: String,
  price: Number,
  imageUrl: String,
  creatorId: ObjectId
}

Purchase Model

{
  userId: ObjectId,
  courseId: ObjectId
}

🔧 Configuration

The application uses the following configuration:

• Database: MongoDB connection string in index.js
• JWT Secrets: User and admin JWT passwords in config/config.js

🤝 Contributing

1. Fork the repository
2. Create a feature branch (git checkout -b feature/AmazingFeature)
3. Commit your changes (git commit -m 'Add some AmazingFeature')
4. Push to the branch (git push origin feature/AmazingFeature)
5. Open a Pull Request

📝 License

This project is licensed under the ISC License - see the package.json file for details.

🐛 Issues

If you encounter any issues or have suggestions, please create an issue in the repository.

📞 Contact

For any queries or collaboration, please reach out through the repository issues section.

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Built with ❤️ using Node.js and Express