• Overview
• Technologies Used
• Project Structure
• Installation
• Configuration
• Running the Application
• Endpoints
  • User Authentication
  • Product CRUD Operations
  • File Upload/Download Operations
• Error Handling
• Models
  • User Model
  • User Products Model
  • File Detail Model
  • Token Blacklist Model

This repository contains a Node.js API built with Express.js, providing user authentication using JWT (JSON Web Tokens), CRUD (Create, Read, Update, Delete) operations for products, and file upload/download functionalities.

• Node.js: A JavaScript runtime for building the server-side application.
• Express.js: A fast, unopinionated, and minimalist web framework for Node.js.
• MongoDB: A NoSQL database used to store user and product data.
• jsonwebtoken: A library to generate and verify JSON Web Tokens for user authentication.
• bcrypt: A library to hash and compare passwords securely.
• multer: A middleware for handling multipart/form-data, used for file upload.
• mongoose: An ODM (Object Data Modeling) library for MongoDB and Node.js.

.
├── index.js
├── routes
│   ├── auth-routes.js
│   ├── productRoutes.js
│   └── file-routes.js
├── controllers
│   ├── auth-controller.js
│   ├── product-controller.js
│   └── file-controller.js
├── middlewares
│   └── auth-middleware.js
├── models
│   ├── user-model.js
│   ├── user-product-model.js
│   ├── file-model.js
│   └── token-blacklist-model.js
├── constants
│   └── constants.js
└── utils
    ├── error-handler.js
    └── file-storage-config.js

1. Clone the repository:

git clone https://github.com/sabari570/Backend-Task-2-JWT-authenticated-APIs-for-user-product-and-file-manipulation-.git

2. Navigate to the project directory:

cd nodejs-express-jwt-crud

3. Install dependencies:

npm install

Create a `.env` file in the root directory and add the following:

JWT_ACCESS_TOKEN_SECRET_KEY=your_access_token_secret_key
JWT_REFRESH_TOKEN_SECRET_KEY=your_refresh_token_secret_key
PORT=port_number_to_run_the_server

npm run dev

• POST /api/auth/register: Register a new user
• POST /api/auth/login: Authenticate and login a user
• POST /api/auth/regenerate-token: Refresh the JWT token
• POST /api/auth/logout: Logout a user

• POST /api/products/create-product: Create a new product
• GET /api/products/fetch-products: Fetch all products for a user
• GET /api/products/fetch-product/:id: Fetch a single product by ID
• PUT /api/products/update-product/:id: Update a product by ID
• DELETE /api/products/delete-product/:id: Delete a product by ID

• POST /api/file/upload-file: Upload a file
• GET /api/file/download-file/:fileId: Download a file by ID

Errors are handled using a custom error handler utility (error-handler.js) which formats the error messages.

The mongoose model for the User schema.

The mongoose model for the UserProducts schema.

The mongoose model for storing file details related to the user.

The mongoose model for storing the blacklisted tokens.