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JWT and Authentication Setup

Purpose: Configure JWT authentication and verify the auth system works.

Prerequisites

  • Docker & Docker Compose
  • Python 3.11+
  • Node.js 20+

Step 1: Start Docker Services (PostgreSQL + ChromaDB)

cd auto-bidder
docker-compose up -d

Verify: docker-compose ps — PostgreSQL on 5432, ChromaDB on 8001.

Step 2: Backend Setup

cd backend
python -m venv venv
source venv/bin/activate  # Windows: venv\Scripts\activate
pip install -r requirements.txt

Step 3: Start Backend and Frontend

Backend:

cd backend
uvicorn app.main:app --reload --port 8000

Frontend (new terminal):

cd frontend
npm install && npm run dev

Step 4: Test Authentication

UI: Go to http://localhost:3000 → Sign Up → Create account → Dashboard

API (curl):

# Signup
curl -X POST http://localhost:8000/api/auth/signup \
  -H "Content-Type: application/json" \
  -d '{"email":"test@example.com","password":"password123","full_name":"Test User"}'

# Login
curl -X POST http://localhost:8000/api/auth/login \
  -H "Content-Type: application/json" \
  -d '{"email":"test@example.com","password":"password123"}'

# Get user (use token from login)
curl -X GET http://localhost:8000/api/auth/me \
  -H "Authorization: Bearer YOUR_TOKEN"

Environment Variables

Backend .env:

DATABASE_URL=postgresql+asyncpg://postgres:postgres@127.0.0.1:5432/auto_bidder_dev
JWT_SECRET=your-super-secret-jwt-key-change-this-in-production
JWT_ALGORITHM=HS256
JWT_EXPIRATION_MINUTES=10080

Frontend .env.local:

NEXT_PUBLIC_BACKEND_API_URL=http://localhost:8000
PYTHON_AI_SERVICE_URL=http://localhost:8000

Generate JWT secret for production:

openssl rand -hex 32

Current Auth: Custom JWT

  • Custom users table in PostgreSQL
  • JWT issued by FastAPI at /api/auth/login
  • Frontend stores token in localStorage; sends Authorization: Bearer <token>

Common Issues

Issue Solution
"Failed to create database pool" docker-compose ps — ensure PostgreSQL running
"JWT_SECRET not found" Add JWT_SECRET to backend/.env
"Network Error" / "Failed to fetch" Backend running? Check NEXT_PUBLIC_BACKEND_API_URL
"Unauthorized" after login Clear localStorage and login again

See also: setup-and-run.md for full quick start.