Files
spotlightcam/backend
Radosław Gierwiało aef1a35ee2 feat(matching): implement 3-tier account system with fairness-based recording assignment
Add account tier system (BASIC/SUPPORTER/COMFORT) to reduce recording burden
for premium users while maintaining fairness through karma-based assignment.

Database Changes:
- Add AccountTier enum (BASIC, SUPPORTER, COMFORT)
- Add User.accountTier with BASIC default
- Add User.recordingsDone and User.recordingsReceived for karma tracking
- Add EventParticipant.accountTierOverride for event-specific tier upgrades
- Migration: 20251129220604_add_account_tiers_and_recording_stats

Matching Algorithm Updates:
- Implement fairness debt calculation: receivedCount - doneCount
- Apply tier penalties: SUPPORTER (-10), COMFORT (-50)
- New sorting priority: Location > Fairness > Load balancing
- Add getEffectiveTier() helper for tier resolution with override support
- Add getRecordingStatsForUsers() for fetching karma statistics

Tier Behavior:
- BASIC: Normal recording frequency (baseline, no penalty)
- SUPPORTER: Moderately reduced frequency (fairness penalty -10)
- COMFORT: Significantly reduced frequency (fairness penalty -50)
- All tiers can still be assigned when no better candidates available

Constants:
- ACCOUNT_TIER enum in src/constants/tiers.js
- FAIRNESS_SUPPORTER_PENALTY = 10
- FAIRNESS_COMFORT_PENALTY = 50

Tests:
- Update tests for dual buffer system semantics
- All 30 tests passing
- Fix imports: HEAT_BUFFER → HEAT_BUFFER_BEFORE
2025-11-29 23:19:41 +01:00
..

spotlight.cam Backend

Node.js + Express backend for spotlight.cam - P2P video exchange app for dance events.

Features

  • Express REST API
  • CORS enabled
  • Health check endpoint
  • Error handling
  • Unit tests (Jest + Supertest)
  • PostgreSQL integration (planned)
  • JWT authentication (planned)
  • Socket.IO for real-time chat (planned)
  • WebRTC signaling (planned)

API Endpoints

Health Check

  • GET /api/health - Backend health status

Future Endpoints

  • POST /api/auth/register - Register new user
  • POST /api/auth/login - Login user
  • GET /api/users/me - Get current user
  • GET /api/events - List events
  • POST /api/matches - Create match
  • POST /api/ratings - Rate partner

Development

Install dependencies

npm install

Run in development mode

npm run dev

Run tests

npm test

Run tests in watch mode

npm run test:watch

Run in production mode

npm start

Environment Variables

Create a .env file (see .env.example):

NODE_ENV=development
PORT=3000
CORS_ORIGIN=http://localhost:8080

Project Structure

backend/
├── src/
│   ├── __tests__/          # Unit tests
│   │   └── app.test.js
│   ├── routes/             # API routes (future)
│   ├── controllers/        # Business logic (future)
│   ├── middleware/         # Custom middleware (future)
│   ├── utils/              # Helper functions (future)
│   ├── app.js              # Express app setup
│   └── server.js           # Server entry point
├── .env                    # Environment variables (gitignored)
├── .env.example            # Environment variables template
├── package.json
└── Dockerfile

Testing

Tests are written using:

  • Jest - Test framework
  • Supertest - HTTP assertions

Run tests:

npm test

Current test coverage:

  • Health check endpoint
  • 404 error handling
  • CORS configuration
  • JSON body parsing

Docker

Build and run with Docker Compose (from project root):

docker compose up --build

Backend will be available at:

Next Steps

  1. Basic Express setup
  2. Health check endpoint
  3. Unit tests
  4. PostgreSQL connection
  5. Database schema and migrations
  6. Authentication (JWT + bcrypt)
  7. Socket.IO for real-time chat
  8. WebRTC signaling

License

TBD