Contact Management System

A Node.js-based backend application designed to manage contact information efficiently. This project features user authentication and authorization using JWT, CRUD operations integrated with a MongoDB database, and secure API routes.

Features

• User Authentication & Authorization:

  • Register and log in users securely.
  • Token-based authentication using JSON Web Tokens (JWT).
  • Role-based access control for different levels of functionality.

• CRUD Operations:

  • Create, Read, Update, and Delete contacts.
  • Data persistence with MongoDB.

• API Routes:

  • Organized and secure API endpoints.
  • Authentication middleware to protect routes.

Tech Stack

• Backend: Node.js, Express.js
• Database: MongoDB
• Authentication: JWT

Installation

1. Clone the repository:

   git clone https://github.com/yashsuthar00/nodeJs-CONTACT-MANAGER-APP.git
   cd contact-management-system
   

2. Install dependencies:

   npm install
   

3. Set up environment variables:

• Create a .env file in the root directory.
• Add the following keys:

  PORT=5000
  CONNECTION_STRING=your-mongodb-connection-string
  ACCESS_TOKEN_SECRET=your-jwt-secret
  

4. Start the server:

   npm start
   
   

5. Access the application:

• Base URL: http://localhost:5000

API Endpoints

Authentication Routes

• POST /api/users/register: Register a new user.
• POST /api/users/login: Authenticate a user and return a JWT.
• GET /api/users/current: Shows the current authenticated user.

Contact Routes

• GET /api/contacts: Get all contacts (protected).
• POST /api/contacts: Add a new contact (protected).
• GET /api/contacts/:id: Get a single contact by ID (protected).
• PUT /api/contacts/:id: Update a contact by ID (protected).
• DELETE /api/contacts/:id: Delete a contact by ID (protected).