Backend:
- Add EventParticipant model to track user-event participation
- Create database migration for event_participants table
- Record participation when user joins event chat via Socket.IO
- Update GET /api/events to include isJoined flag for current user
- Sort events: joined events first, then by start date
- Add authenticate middleware to GET /api/events
Frontend:
- Replace mock events with real API data from backend
- Add loading and error states to EventsPage
- Display "Joined" badge on events user has joined
- Highlight joined events with colored border
- Show "Open chat" vs "Join chat" button text
- Auto-refresh events list when navigating back
When users join an event chat, this is now recorded in the database.
Joined events appear at the top of the list with visual indicators.
Backend changes:
- Socket.IO: Send last 20 messages on join_event_room
- REST API: Add GET /api/events/:eventId/messages endpoint with pagination
- Support for 'before' cursor-based pagination for loading older messages
Frontend changes:
- Load initial 20 messages when joining event chat
- Implement infinite scroll to load older messages on scroll to top
- Add loading indicator for older messages
- Preserve scroll position when loading older messages
- Add eventsAPI.getMessages() function for pagination
User experience:
- New users see last 20 messages immediately
- Scrolling up automatically loads older messages in batches of 20
- Smooth scrolling experience with position restoration
Note: Messages are encrypted in transit via HTTPS/WSS but stored
as plain text in database (no E2E encryption).
Implemented WebSocket-based real-time messaging for both event rooms and private match chats using Socket.IO with comprehensive test coverage.
Backend changes:
- Installed socket.io@4.8.1 for WebSocket server
- Created Socket.IO server with JWT authentication middleware
- Implemented event room management (join/leave/messages)
- Added active users tracking with real-time updates
- Implemented private match room messaging
- Integrated Socket.IO with Express HTTP server
- Messages are persisted to PostgreSQL via Prisma
- Added 12 comprehensive unit tests (89.13% coverage)
Frontend changes:
- Installed socket.io-client for WebSocket connections
- Created socket service layer for connection management
- Updated EventChatPage with real-time messaging
- Updated MatchChatPage with real-time private chat
- Added connection status indicators (● Connected/Disconnected)
- Disabled message input when not connected
Infrastructure:
- Updated nginx config to proxy WebSocket connections at /socket.io
- Added Upgrade and Connection headers for WebSocket support
- Set long timeouts (7d) for persistent WebSocket connections
Key features:
- JWT-authenticated socket connections
- Room-based architecture for events and matches
- Real-time message broadcasting
- Active users list with automatic updates
- Automatic cleanup on disconnect
- Message persistence in database
Test coverage:
- 12 tests passing (authentication, event rooms, match rooms, disconnect, errors)
- Socket.IO module: 89.13% statements, 81.81% branches, 91.66% functions
- Overall coverage: 81.19%
Phase 1, Step 4 completed. Ready for Phase 2 (Core Features).
