📌 FastAPI + JWT Authentication 🚀 Overview This project is a FastAPI backend with JWT authentication, PostgreSQL database, and Docker Compose integration. It supports:

User registration and login with secure password hashing.

JWT token generation and authentication.

Form submission and retrieval endpoints.

Interactive API documentation via Swagger UI.

⚙️ Tech Stack FastAPI – Web framework

Uvicorn – ASGI server

SQLAlchemy – ORM

PostgreSQL – Database

Docker Compose – Container orchestration

Passlib – Password hashing

Python-Jose – JWT handling

Pydantic v2 – Data validation

📂 Project Structure Code assignment_Task/ │── app/ │ ├── main.py # FastAPI app & routes │ ├── auth.py # JWT token creation │ ├── crud.py # Database operations │ ├── models.py # SQLAlchemy models │ ├── schemas.py # Pydantic schemas │ ├── utils.py # Password hashing │ ├── config.py # Environment variables │ └── database.py # DB engine & session │── requirements.txt # Python dependencies │── Dockerfile # Backend image build │── docker-compose.yml # Services definition │── .env # Environment variables 🔑 Environment Variables (.env) Code DATABASE_URL=postgresql://postgres:Jeetu@3010@db:5432/assignment_task SECRET_KEY=69676c404a0cc8a8a4f68c1f5eca95dc558b45461fd9385003511fc164532631 ALGORITHM=HS256 ACCESS_TOKEN_EXPIRE_MINUTES=30 🛠 Local Setup (without Docker) Create venv:

powershell python -m venv venv .\venv\Scripts\activate Install dependencies:

powershell pip install -r requirements.txt Run server:

powershell uvicorn app.main:app --reload Access:

Root: http://127.0.0.1:8000

Docs: http://127.0.0.1:8000/docs

🐳 Docker Setup Start services:

powershell docker compose up --build Services:

Backend → http://localhost:8000

Postgres → localhost:5432 (postgres / Jeetu@3010 / assignment_task)

Stop services:

powershell docker compose down 🔐 API Endpoints Root GET /
Response:

json {"message": "API is live"} Register POST /register
Request:

json { "username": "alice", "password": "secret123" } Response:

json { "id": 1, "username": "alice", "hashed_password": "$2b$12$..." } Login POST /login
Request:

json { "username": "alice", "password": "secret123" } Response:

json { "access_token": "jwt_token_here", "token_type": "bearer" } Submit Form POST /submit-form
Request:

json { "name": "Palak", "phone": "9876543210", "remarks": "Testing form" } Response:

json { "id": 1, "name": "Palak", "phone": "9876543210", "remarks": "Testing form" } Get Form GET /get-form/{form_id}
Response:

json { "id": 1, "name": "Palak", "phone": "9876543210", "remarks": "Testing form" }