🔐 FastAPI-React-Auth – Token-Based Authentication with FastAPI & React

A full-stack web authentication system built using FastAPI and React, implementing secure JWT-based authentication with HTTP-only cookies, user registration, login, protected routes, and logout functionality.

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🚀 Features

• 🔐 Secure login and registration using JWT tokens (stored in HTTP-only cookies)
• 🔒 Password hashing with bcrypt
• ✅ Protected API routes using FastAPI dependencies
• 🧪 Integration tests with Pytest
• 🎯 Token expiration, logout, and cookie invalidation
• 🌐 CORS configuration for frontend/backend communication

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🛠️ Tech Stack

Frontend

• React (Hooks, Axios, React Router)
• JavaScript (ES6+)
• HTML5, CSS3

Backend

• FastAPI
• Python
• Pydantic
• bcrypt, JWT

Testing

• Pytest (Unit & Integration Tests)

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🔧 Installation & Setup

1. Clone the repo

git clone https://github.com/Darrius-W/Auth-Python.git cd FastAPI-React-Auth

2. Setup the backend

cd server
python -m venv venv
venv\Scripts\activate
pip install -r requirements.txt
uvicorn main:app --reload

3. Setup the frontend

cd client
npm install
npm start

4. Run Tests

cd server
pytest

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🔒 Authentication Flow

1. Signup or Login from React frontend
2. Backend returns JWT token in an HTTP-only cookie
3. Protected routes are accessed only if token is valid
4. /logout deletes cookie and ends session

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✅ Example Usage

• Visit /profile to see a protected page after logging in
• Manually clear cookies or logout to simulate session expiration

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🧪 Testing Highlights

• ✅ Tested signup, login, protected route access, and logout with Pytest
• ✅ Simulated cookie handling in test client
• ✅ Covers valid and invalid authentication paths

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