Tree Structure:

MERN-Authentication-sys
                      ├── LICENSE
                      ├── README.md
                      ├── backend
                      │         ├── Controllers
                      │         │             └── AuthController.js
                      │         ├── Middlewares
                      │         │             ├── Auth.js
                      │         │             └── AuthValidation.js
                      │         ├── Models
                      │         │        ├── User.js
                      │         │        └── db.js
                      │         ├── Routes
                      │         │        ├── AuthRouter.js
                      │         │        └── ProductRouter.js
                      │         ├── index.js
                      │         ├── package-lock.json
                      │         └── package.json
                      ├── frontend
                      ├── README.md
                      ├── package-lock.json
                      ├── package.json
                      ├── public
                      │        ├── favicon.ico
                      │        ├── index.html
                      │        ├── logo192.png
                      │        ├── logo512.png
                      │        ├── manifest.json
                      │        └── robots.txt
                      └── src
                            ├── App.css
                            ├── App.js
                            ├── App.test.js
                            ├── RefreshHandler.js
                            ├── index.css
                            ├── index.js
                            ├── logo.svg
                            ├── pages
                            │       ├── Home.js
                            │       ├── Login.js
                            │       └── Signup.js
                            ├── reportWebVitals.js
                            ├── setupTests.js
                            └── utils.js

                      

WireFrame

MERN-Authentication-sys

Full-Stack Authentication System with MERN Stack

High-Level Documentation for MERN Full-Stack Authentication System

1. Introduction

• Project Name: FULL-STACK AUTHENTICATION SYSTEM
• Description: Web app with full-stack authentication using the MERN stack.
• Purpose: Secure user authentication with role-based access control.

2. Architecture Overview

• Frontend: React.js (Hosted on Vercel)
• Backend: Node.js with Express.js (Hosted on Render)
• Database: MongoDB (User data storage)

3. Key Components

• Frontend:
  • React Components: Login, Register, Dashboard, Admin Panel
  • State Management: Context API/Redux
  • Routing: React Router
• Backend:
  • Express Routes: Auth routes, protected routes
  • Middleware: JWT verification, Role-based authorization
• Database:
  • User Schema: User data including roles

4. Data Flow

1. User Registration:
   • Frontend sends POST request to /auth/signup
   • Backend hashes password, saves user in MongoDB, responds with success/error
2. User Login:
   • Frontend sends POST request to /auth/login
   • Backend verifies credentials, generates JWT, responds with token and role
   • Frontend stores token and role
   • MindMap to avoid JWT TOKEN Spoofing

     

     • ChatGpt Response : Click to View
3. Protected Routes:
   • Frontend checks JWT token, sends with requests
   • Backend verifies token, checks user role, allows/denies access

5. Role-Based Authentication Implementation

• User Schema and signup/login endpoints:
  • See Schema
• How to start locally:
  • Step 1
  • Step 2