Todo Application Backend

About

A secure backend API for managing todos with user authentication, built with Express.js and MongoDB.

Topics: todo backend mongodb express jwt nodejs rest-api

Features

• User signup and signin with email validation
• JWT Authentication with 30-day expiration
• Password hashing with bcrypt
• CRUD operations for todos
• Input validation with Zod
• MongoDB database integration

Tech Stack

• Express.js - Backend server
• MongoDB - Database
• Mongoose - MongoDB ODM
• JWT - Authentication
• Bcrypt - Password hashing
• Zod - Input validation

Project Structure

Mongo_class/
├── index.js                 # Main server & API routes
├── db.js                    # Database models
├── package.json             # Dependencies & scripts
├── .env                     # Environment variables
└── .gitignore              # Git ignore rules

Getting Started

1. Clone the repository

   git clone <repository-url>
   cd Mongo_class

2. Install dependencies

   npm install

3. Set up environment variables

   echo "JWT_SECRET=your-secret-key" > .env
   echo "DB_URL=your-mongodb-connection-string" >> .env

4. Start the server

   node index.js

5. Server runs on - http://localhost:3000

API Endpoints

Authentication

Method	Endpoint	Description
POST	/signup	Create account
POST	/signin	User login

Todos (Protected)

Method	Endpoint	Description
POST	/todo	Create new todo
GET	/todos	Get user's todos

How it Works

1. User creates account with email validation
2. Password gets hashed and stored securely
3. JWT token generated on successful signin
4. Token required for all todo operations
5. Users can create and view their todos

Frontend

Frontend will be built with React (coming soon!)

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Built with ❤️ by Sahil Singh