Learn_System

maxim.dolgolyov/Learn_System

Fork 0

Commit Graph

Author	SHA1	Message	Date
Maxim Dolgolyov	c0f20ef020	fix: classroom review — 11 исправлений из code review - sessions.js: endSession закрывает classroom_attendance (left_at), чистит classroom_muted - sessions.js: joinSession восстанавливает mute-состояние при реконнекте - strokes.js: updateStroke проверяет авторство штриха (не только canDraw) - strokes.js: clearPage валидирует page_num как положительное целое - strokes.js: postStrokes ограничивает массив 500 штрихами - pages.js: duplicatePage сохраняет user_id при копировании штрихов - pages.js: changePage валидирует page_num - pages.js: updatePageTemplate делает INSERT OR IGNORE перед UPDATE - permissions.js: mutePeer сохраняет в classroom_muted; добавлен unmutePeer - permissions.js: getOnlineStudents не возвращает email - chat.js: exportChat экранирует переводы строк в именах и сообщениях - guestClassroom.js: санитизация имени гостя (убираем HTML-символы) - ws-server.js: mute_peer сохраняет в БД; добавлен обработчик unmute_peer - routes/classroom.js: rate-limit для cursor/preview/signal/strokes; маршрут DELETE /mute - migrations/001_classroom_muted.sql: новая таблица classroom_muted	2026-05-07 14:26:19 +03:00
Maxim Dolgolyov	fd29acbbdd	feat: WebSocket real-time + rAF render gate + guest board + screen picker Classroom performance: - WebSocket server (ws-server.js) for low-latency cursor & stroke preview Replaces HTTP POST per event → eliminates per-message auth overhead Session member cache (30s TTL) avoids SQLite query per WS message Fallback to HTTP POST when WS not connected - Cursor throttle reduced 100ms → 33ms (~30fps) - Stroke preview throttle reduced 50ms → 20ms - whiteboard.js: render() is now rAF-gated (_doRender/_rafPending) Multiple render() calls within one frame collapse into one repaint document.hidden check — zero CPU when tab is in background visibilitychange listener restores canvas on tab focus Guest board: - guestClassroom.js route: public token-based read-only access - guest-board.html: name entry + read-only whiteboard + SSE - SSE: addGuestClient/removeGuestClient/emitToGuests Screen share picker: - Discord-style modal with tab switching (screen/window/tab) - Live video preview before confirming share - useExistingScreenStream() in ClassroomRTC Fullscreen exit overlay: - #cr-fs-exit-overlay button inside cr-board-wrap - Visible only via CSS :fullscreen selector (touchpad users) File sharing from library: - Teacher picks file from library, sends as styled card in chat - crDownloadLibraryFile() fetches with Bearer auth Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>	2026-04-13 18:04:59 +03:00

Author

SHA1

Message

Date

Maxim Dolgolyov

c0f20ef020

fix: classroom review — 11 исправлений из code review

- sessions.js: endSession закрывает classroom_attendance (left_at), чистит classroom_muted
- sessions.js: joinSession восстанавливает mute-состояние при реконнекте
- strokes.js: updateStroke проверяет авторство штриха (не только canDraw)
- strokes.js: clearPage валидирует page_num как положительное целое
- strokes.js: postStrokes ограничивает массив 500 штрихами
- pages.js: duplicatePage сохраняет user_id при копировании штрихов
- pages.js: changePage валидирует page_num
- pages.js: updatePageTemplate делает INSERT OR IGNORE перед UPDATE
- permissions.js: mutePeer сохраняет в classroom_muted; добавлен unmutePeer
- permissions.js: getOnlineStudents не возвращает email
- chat.js: exportChat экранирует переводы строк в именах и сообщениях
- guestClassroom.js: санитизация имени гостя (убираем HTML-символы)
- ws-server.js: mute_peer сохраняет в БД; добавлен обработчик unmute_peer
- routes/classroom.js: rate-limit для cursor/preview/signal/strokes; маршрут DELETE /mute
- migrations/001_classroom_muted.sql: новая таблица classroom_muted

2026-05-07 14:26:19 +03:00

Maxim Dolgolyov

fd29acbbdd

feat: WebSocket real-time + rAF render gate + guest board + screen picker

Classroom performance:
- WebSocket server (ws-server.js) for low-latency cursor & stroke preview
  Replaces HTTP POST per event → eliminates per-message auth overhead
  Session member cache (30s TTL) avoids SQLite query per WS message
  Fallback to HTTP POST when WS not connected
- Cursor throttle reduced 100ms → 33ms (~30fps)
- Stroke preview throttle reduced 50ms → 20ms
- whiteboard.js: render() is now rAF-gated (_doRender/_rafPending)
  Multiple render() calls within one frame collapse into one repaint
  document.hidden check — zero CPU when tab is in background
  visibilitychange listener restores canvas on tab focus

Guest board:
- guestClassroom.js route: public token-based read-only access
- guest-board.html: name entry + read-only whiteboard + SSE
- SSE: addGuestClient/removeGuestClient/emitToGuests

Screen share picker:
- Discord-style modal with tab switching (screen/window/tab)
- Live video preview before confirming share
- useExistingScreenStream() in ClassroomRTC

Fullscreen exit overlay:
- #cr-fs-exit-overlay button inside cr-board-wrap
- Visible only via CSS :fullscreen selector (touchpad users)

File sharing from library:
- Teacher picks file from library, sends as styled card in chat
- crDownloadLibraryFile() fetches with Bearer auth

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

2026-04-13 18:04:59 +03:00

2 Commits