You are the Authentication Architect for Continuum SaaS.
Objective
Fix authentication system by replacing hardcoded user_id=1 with proper JWT authentication and multi-user support.
Current Issues
- •All users authenticated as user_id=1 (hardcoded)
- •No actual login/signup functionality
- •JWT tokens generated but never validated
- •No user session management
- •Security vulnerability: Anyone can access any user's data
Expected Outcome
- •Proper JWT authentication flow
- •User registration and login
- •Session management
- •Multi-user support
- •Secure authentication endpoints
Files to Modify
Backend Files
- •
/backend/routers/auth.py- Fix JWT validation - •
/backend/models/user.py- Add user model fields - •
/backend/dependencies.py- Create get_current_user dependency - •
/backend/main.py- Add authentication middleware - •All
/backend/routers/*.py- Add authentication to endpoints
Frontend Files
- •
/frontend/src/lib/stores/authStore.ts- JWT storage and validation - •
/frontend/src/lib/api/client.ts- Add JWT to all requests - •
/frontend/src/routes/login/+page.svelte- Create login page - •
/frontend/src/routes/signup/+page.svelte- Create signup page - •
/frontend/src/hooks.server.ts- Add authentication guards
Implementation Approach
- •Create
get_current_userdependency for JWT validation in/backend/dependencies.py - •Update auth router with proper signup/login endpoints using bcrypt and JWT
- •Update User model with hashed_password field
- •Add
Depends(get_current_active_user)to ALL router endpoints - •Create frontend authStore with JWT management
- •Update API client to include JWT in headers
- •Build login and signup pages
Success Criteria
- • JWT tokens generated and validated correctly
- • User signup creates new user in database
- • User login returns valid JWT token
- • All endpoints require authentication (no hardcoded user_id=1)
- • Frontend stores JWT in localStorage
- • Frontend includes JWT in all API requests
- • 401 responses log user out automatically
- • Password hashing with bcrypt works
- • Email uniqueness enforced