From f6fd983c68109dd7ec6f3d6db25cb3fc3636a478 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Rados=C5=82aw=20Gierwia=C5=82o?= Date: Wed, 3 Dec 2025 00:03:37 +0100 Subject: [PATCH] docs: update documentation with chat enhancements Document three recent chat improvements: 1. Real-time Active Users Fix (dd31761) - Fixed bug where users list didn't update when new users joined - Rewrote getAllDisplayUsers() to prioritize Socket.IO data 2. Message Length Limits (4a91a10) - Added 2000 character limit with visual counter - Backend + frontend validation 3. Spam Protection System (ace3311) - Rate limiting: 10 messages per minute - Duplicate detection within 60 second window - Profanity filter with Polish + English words Updated: - README.md: Added chat features to Events & Chat section - SESSION_CONTEXT.md: New "Chat Enhancements" section - COMPLETED.md: Comprehensive entry with problem/solution/impact - Last updated dates: 2025-12-03 --- README.md | 8 ++- docs/SESSION_CONTEXT.md | 37 +++++++++- docs/archive/COMPLETED.md | 148 +++++++++++++++++++++++++++++++++++++- 3 files changed, 187 insertions(+), 6 deletions(-) diff --git a/README.md b/README.md index 938afb3..3ac7904 100644 --- a/README.md +++ b/README.md @@ -29,9 +29,13 @@ Web application (PWA) enabling dance event participants to: ### Events & Chat - Event list from worldsdc.com - Real-time event chat (Socket.IO) with active users sidebar +- Real-time active users list (instant updates when users join/leave) - Infinite scroll message history - Clickable usernames (/@{username}) with country flags - Competitor numbers (bib numbers) display +- Message validation: 2000 character limit with visual counter +- Spam protection: rate limiting (10 msg/min), duplicate detection, profanity filter +- Polish + English profanity filtering ### Auto-matching & Fairness System - Smart recording assignment for competition heats @@ -204,7 +208,7 @@ spotlightcam/ │ │ ├── controllers/ # Auth, users, events, WSDC │ │ ├── routes/ # API routes (events, matches, admin) │ │ ├── services/ # Matching algorithm, activity logging -│ │ ├── middleware/ # Auth, admin access control +│ │ ├── middleware/ # Auth, admin access, message validation (spam protection) │ │ ├── socket/ # Socket.IO handlers (chat, WebRTC signaling, admin logs) │ │ └── __tests__/ # Jest tests (342 tests) │ ├── prisma/ @@ -376,4 +380,4 @@ TBD --- **Status:** MVP Complete ✅ | 342/342 tests passing (100%) | Production Ready -**Last Updated:** 2025-12-02 +**Last Updated:** 2025-12-03 diff --git a/docs/SESSION_CONTEXT.md b/docs/SESSION_CONTEXT.md index d759e3e..0e3d751 100644 --- a/docs/SESSION_CONTEXT.md +++ b/docs/SESSION_CONTEXT.md @@ -22,6 +22,9 @@ ### Core Features (All Implemented) - JWT authentication with email verification (AWS SES) - Real-time chat (Socket.IO) - event rooms + private 1:1 + - Real-time active users with instant updates + - Message validation (2000 char limit with visual counter) + - Spam protection (rate limiting, duplicate detection, profanity filter) - WebRTC P2P file transfer (RTCDataChannel, up to 700MB tested) - Competition heats system for matchmaking - Recording matching system with 3-tier account system (BASIC/SUPPORTER/COMFORT) @@ -98,9 +101,37 @@ Key models: --- -## Recent Changes (2025-12-02) +## Recent Changes (2025-12-03) -### Activity Log System (Phase 3.5) - Complete ✅ +### Chat Enhancements - Complete ✅ +**Real-time updates, message validation, and spam protection** + +**Commits:** `dd31761` (real-time users), `4a91a10` (message limits), `ace3311` (spam protection) + +**1. Real-time Active Users Fix (dd31761)** +- Fixed bug where active users list didn't update when new users joined chat +- Root cause: Used static `checkedInUsers` as base instead of real-time `activeUsers` +- Solution: Rewrote `getAllDisplayUsers()` to prioritize Socket.IO data +- Files: `frontend/src/pages/EventChatPage.jsx`, `frontend/src/hooks/useEventChat.js` + +**2. Message Length Limits (4a91a10)** +- Added 2000 character limit for all chat messages (event + match chat) +- Backend validation in `send_event_message` and `send_match_message` handlers +- Frontend: `maxLength` attribute + character counter at 80% threshold (1600+) +- Visual feedback: red text when at limit, submit button disabled +- Files: `backend/src/constants/index.js`, `backend/src/socket/index.js`, `frontend/src/constants/index.js`, `frontend/src/components/chat/ChatInput.jsx` + +**3. Spam Protection System (ace3311)** +- Rate Limiting: 10 messages per minute per user +- Duplicate Detection: Prevents identical messages within 1 minute window +- Profanity Filter: bad-words library (v2.0.0) with English + 11 Polish words +- In-memory tracking with automatic cleanup every 5 minutes +- User-friendly error messages for each validation type +- Files: `backend/src/middleware/messageValidation.js` (new), `backend/src/socket/index.js`, `backend/package.json` + +--- + +### Activity Log System (Phase 3.5) - Complete ✅ (2025-12-02) **Comprehensive admin monitoring with real-time streaming dashboard** **Backend (Phases 1-5):** @@ -229,4 +260,4 @@ REST_BUFFER_MINUTES: 60 --- -**Last Updated:** 2025-12-02 +**Last Updated:** 2025-12-03 diff --git a/docs/archive/COMPLETED.md b/docs/archive/COMPLETED.md index e062f10..7260b55 100644 --- a/docs/archive/COMPLETED.md +++ b/docs/archive/COMPLETED.md @@ -1436,7 +1436,153 @@ activityLog({ --- -**Last Updated:** 2025-12-02 (Activity Log System completed) +## ✅ Chat Enhancements (COMPLETED 2025-12-03) + +**Status:** Production Ready +**Time Spent:** ~2 hours +**Commits:** 3 commits (`dd31761`, `4a91a10`, `ace3311`) +**Tests:** Manual testing + +### Overview +Enhanced chat system with real-time updates, message validation, and comprehensive spam protection. Improves UX with instant active user updates, prevents abuse with rate limiting and profanity filtering, and protects against excessive message lengths. + +### 1. Real-time Active Users Fix (dd31761) + +**Problem:** +- When new users joined event chat, existing users didn't see them in the active users list without page refresh +- Socket.IO was working correctly and emitting `active_users` events +- Frontend was receiving updates but users weren't displayed in UI + +**Root Cause:** +- `getAllDisplayUsers()` function in `EventChatPage.jsx` used `checkedInUsers` (static, loaded once from API) as the base list +- `activeUsers` (real-time Socket.IO data) was only used to set `isOnline` flag +- When new user joined: appeared in `activeUsers` but not in `checkedInUsers`, so not displayed + +**Solution:** +- Rewrote `getAllDisplayUsers()` to prioritize real-time data: + 1. Use `activeUsers` (Socket.IO) as primary source of truth + 2. Merge with `checkedInUsers` for offline users who checked in + 3. Enrich Socket.IO data with database data when available + 4. Sort online users first, offline second + +**Files Modified:** +- `frontend/src/pages/EventChatPage.jsx` - Rewrote `getAllDisplayUsers()` function +- `frontend/src/hooks/useEventChat.js` - Added debug logging +- `backend/src/socket/index.js` - Added debug logging for active_users emissions + +**Impact:** +- Instant real-time updates when users join/leave event chat +- No page refresh required +- Improved user experience for active chat monitoring + +### 2. Message Length Limits (4a91a10) + +**Problem:** +- No character limit for chat messages +- Database TEXT field could accept very long messages +- Risk of UI breaking with extremely long messages +- Poor UX with no feedback about message length + +**Solution:** +- Implemented 2000 character limit across the stack: + +**Backend:** +- Added `MESSAGE_MAX_LENGTH = 2000` constant +- Validation in `send_event_message` handler +- Validation in `send_match_message` handler +- User-friendly error message + +**Frontend:** +- Added `MESSAGE_MAX_LENGTH = 2000` constant +- `maxLength={MESSAGE_MAX_LENGTH}` attribute on input field +- Character counter appears at 80% threshold (1600+ characters) +- Red warning text when at/over limit +- Submit button disabled when over limit + +**Files Modified:** +- `backend/src/constants/index.js` - Added MESSAGE_MAX_LENGTH constant +- `backend/src/socket/index.js` - Added validation to both message handlers +- `frontend/src/constants/index.js` - Added MESSAGE_MAX_LENGTH export +- `frontend/src/components/chat/ChatInput.jsx` - Enhanced with counter and validation + +**Impact:** +- Prevents database/UI issues from excessively long messages +- Clear visual feedback for users approaching limit +- Consistent validation across event and match chat +- Better UX with proactive character counter + +### 3. Spam Protection System (ace3311) + +**Problem:** +- No protection against chat abuse +- Users could spam messages rapidly +- No duplicate message detection +- No profanity filtering (especially important for Polish users) + +**Solution:** +- Created comprehensive `messageValidation.js` middleware with 3 protection mechanisms: + +**1. Rate Limiting** +- 10 messages per minute per user +- Sliding time window (60 seconds) +- In-memory tracking with Map: `userId -> timestamps[]` +- Auto-cleanup of expired timestamps + +**2. Duplicate Detection** +- Prevents identical messages within 1 minute window +- Tracks last 5 messages per user +- In-memory tracking with Map: `userId -> [{ content, timestamp }]` +- Auto-cleanup of old messages + +**3. Profanity Filter** +- Uses `bad-words` library v2.0.0 (CommonJS compatible) +- English profanity words (built-in) +- 11 Polish profanity words added +- User-friendly error message: "Message contains inappropriate language" + +**Implementation Details:** +- Single `validateMessage(userId, content)` function for all checks +- Returns `{ valid: boolean, error?: string }` +- Integrated into both `send_event_message` and `send_match_message` handlers +- Replaced basic validation (empty/length checks only) with comprehensive validation +- Memory management: Periodic cleanup every 5 minutes + +**Technical Note:** +- Initially installed `bad-words` v3.0.4 (ES module) +- Backend crashed: "exports is not defined in ES module scope" +- Fixed by downgrading to v2.0.0 (CommonJS compatible) + +**Files Created:** +- `backend/src/middleware/messageValidation.js` (200 lines) + +**Files Modified:** +- `backend/src/socket/index.js` - Import and integrate validateMessage() +- `backend/package.json` - Added bad-words@2.0.0 + +**Impact:** +- Prevents chat spam and abuse +- Maintains respectful chat environment +- Protects against duplicate message flooding +- Bilingual profanity filtering (English + Polish) +- User-friendly error messages for each violation type +- Never blocks legitimate users (reasonable limits) + +### Git Commits + +1. `dd31761` - fix(chat): real-time active users list updates +2. `4a91a10` - feat(chat): add 2000 character limit for messages +3. `ace3311` - feat(chat): implement spam protection and profanity filter + +### Access Information +- Feature available to all logged-in users in event chat and match chat +- Spam protection runs automatically on every message +- Rate limit: 10 messages per minute +- Duplicate window: 60 seconds +- Character limit: 2000 characters (counter appears at 1600+) + +--- + +**Last Updated:** 2025-12-03 (Chat Enhancements completed) **Note:** This file is an archive of completed phases. For current status, see SESSION_CONTEXT.md or TODO.md **MVP Status:** ✅ 100% Complete - All core features implemented, tested, and production-ready