Files
spotlightcam/backend
Radosław Gierwiało ace33111a4 feat(chat): implement spam protection and profanity filter
Add comprehensive message validation with three protection mechanisms:

1. Rate Limiting: 10 messages per minute per user
2. Duplicate Detection: Prevents sending identical messages within 1 minute
3. Profanity Filter: Blocks inappropriate language (English + Polish)

Implementation:
- New messageValidation.js middleware with validateMessage() function
- Integrated into both event chat and match chat handlers
- Uses bad-words library (v2.0.0 for CommonJS compatibility)
- In-memory tracking with automatic cleanup every 5 minutes
- User-friendly error messages for each validation type

Technical details:
- Rate limit: 10 msg/min sliding window
- Duplicate check: Last 5 messages within 60s window
- Profanity: bad-words + 11 Polish words
- Memory management: Periodic cleanup of expired data
2025-12-02 23:59:16 +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