MettaChain-PropChain-BackEnd

Backend API for MettaChain PropChain with Facebook OAuth2 authentication.

Features

• Facebook OAuth2 Login
• User profile management
• Account linking
• Profile synchronization

Setup

1. Install dependencies:

   npm install

2. Configure Facebook OAuth2:

   • Go to Facebook Developers
   • Create a new app or use existing one
   • Add Facebook Login product
   • Get your App ID and App Secret
   • Set the callback URL to: http://localhost:3000/auth/facebook/callback

3. Create .env file with your configuration:

   FACEBOOK_APP_ID=your_facebook_app_id
   FACEBOOK_APP_SECRET=your_facebook_app_secret
   SESSION_SECRET=your_random_session_secret
   PORT=3000
   

4. Start the server:

   npm start

   Or for development:

   npm run dev

API Endpoints

Authentication

• GET /auth/facebook - Initiate Facebook OAuth2 login
• GET /auth/facebook/callback - OAuth2 callback (handled automatically)
• GET /logout - Logout user

User Management

• GET /profile - Get current user profile (requires authentication)
• POST /auth/link-facebook - Link Facebook account to existing user
• POST /auth/sync-profile - Sync user profile with Facebook

Testing

1. Start the server
2. Visit http://localhost:3000/auth/facebook in your browser
3. Complete Facebook login
4. You'll be redirected to /profile with user data

Acceptance Criteria

• ✅ OAuth2 config (Facebook app setup and environment variables)
• ✅ Login endpoint (/auth/facebook)
• ✅ Account linking (/auth/link-facebook)
• ✅ Profile sync (/auth/sync-profile)