📚 Library Management System — Backend API

A backend-only Library Management System built using Node.js, Express.js, and MongoDB. The system provides RESTful APIs for managing books, users, authentication, issue/return operations, and library records.

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🚀 Project Overview

This project is a backend API service for a Library Management System. It allows administrators and users to:

• Manage books
• Manage users
• Issue and return books
• Authenticate users securely
• Perform CRUD operations

The backend is designed using REST API architecture with MongoDB database integration.

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🌟 Features

🔐 Authentication & Security

• User Signup & Login
• JWT Authentication
• Password Hashing using bcrypt
• Protected Routes

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📚 Book Management

• Add Books
• Update Book Details
• Delete Books
• Get All Books
• Search Books

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👤 User Management

• Register Users
• Login Users
• Manage User Records

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🔄 Issue & Return System

• Issue Books
• Return Books
• Track Borrowed Books

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🛠️ Tech Stack

Backend

• Node.js
• Express.js

Database

• MongoDB
• Mongoose

Authentication

• JWT
• bcryptjs

Other Packages

• dotenv
• cors
• morgan
• nodemon

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📂 Folder Structure

backend/
│
├── config/
│   └── db.js
│
├── controllers/
│   ├── authController.js
│   ├── bookController.js
│   └── userController.js
│
├── middleware/
│   ├── authMiddleware.js
│   └── errorMiddleware.js
│
├── models/
│   ├── User.js
│   ├── Book.js
│   └── Issue.js
│
├── routes/
│   ├── authRoutes.js
│   ├── bookRoutes.js
│   └── userRoutes.js
│
├── services/
│
├── .env
├── server.js
├── package.json
└── README.md

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🌐 API Endpoints

🔐 Authentication APIs

Signup

POST /api/auth/signup

Request Body

{
  "name": "Akshit",
  "email": "akshit@gmail.com",
  "password": "123456"
}

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Login

POST /api/auth/login

Request Body

{
  "email": "akshit@gmail.com",
  "password": "123456"
}

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📚 Book APIs

Add Book

POST /api/books

Request Body

{
  "title": "Atomic Habits",
  "author": "James Clear",
  "category": "Self Help",
  "quantity": 5
}

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Get All Books

GET /api/books

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Get Single Book

GET /api/books/:id

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Update Book

PUT /api/books/:id

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Delete Book

DELETE /api/books/:id

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Search Books

GET /api/books/search?title=Atomic

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🔄 Issue & Return APIs

Issue Book

POST /api/issues

Request Body

{
  "userId": "USER_ID",
  "bookId": "BOOK_ID"
}

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Return Book

PUT /api/issues/return/:id

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🔐 Environment Variables

Create .env file inside backend folder:

PORT=5000
MONGO_URI=your_mongodb_connection_string
JWT_SECRET=your_secret_key

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🚀 Installation & Setup

Clone Repository

git clone YOUR_GITHUB_REPO_URL

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Install Dependencies

npm install

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▶️ Run Backend Server

Development Mode

npm run dev

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Production Mode

npm start

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🔒 Security Features

• JWT Authentication
• Password Hashing
• Protected Routes
• Environment Variables
• Secure API Handling

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📊 Database Collections

Users Collection

Stores:

• name
• email
• password

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Books Collection

Stores:

• title
• author
• category
• quantity

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Issues Collection

Stores:

• userId
• bookId
• issueDate
• returnDate

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💡 Key Functionalities

• CRUD Operations
• REST API Architecture
• Authentication System
• MongoDB Integration
• Error Handling Middleware
• Search & Filtering

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🚀 Future Improvements

• Fine Calculation System
• Admin Dashboard
• Email Notifications
• Book Reservation System
• Role-Based Access

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📸 Screenshots

Add:

• Postman API Testing
• MongoDB Collections
• Authentication APIs
• CRUD Operations
• Deployment Screenshots

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👨‍💻 Author

Akshit Vats

Library Management System Backend 😄🔥