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1821 1822 1823 1824 1825 1826 1827 1828 1829 1830 1831 1832 1833 1834 1835 1836 1837 1838 1839 1840 1841 1842 1843 1844 1845 1846 1847 1848 1849 1850 1851 1852 1853 1854 1855 1856 1857 1858 1859 1860 1861 1862 1863 1864 1865 1866 1867 1868 1869 1870 1871 1872 1873 1874 1875 1876 1877 1878 1879 1880 1881 1882 1883 1884 1885 1886 1887 1888 1889 1890 1891 1892 1893 1894 1895 1896 1897 1898 1899 1900 1901 1902 1903 1904 1905 1906 1907 1908 1909 1910 1911 1912 1913 1914 1915 1916 1917 1918 1919 1920 1921 1922 1923 1924 1925 1926 1927 1928 1929 1930 1931 1932 1933 1934 1935 1936 1937 1938 1939 1940 1941 1942 1943 1944 1945 1946 1947 1948 1949 1950 1951 1952 1953 1954 1955 1956 1957 1958 1959 1960 1961 1962 1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 | import type { Server as HTTPServer } from 'http' import { Server as SocketIOServer } from 'socket.io' import type { Server as SocketIOServerType } from 'socket.io' import { createAdapter } from '@socket.io/redis-adapter' import { applyGameMove, createArcadeSession, deleteArcadeSession, getArcadeSession, getArcadeSessionByRoom, updateSessionActivity, updateSessionActivePlayers, getGameStateFromSession, setGameStateInNamespace, } from './lib/arcade/session-manager' import { createRoom, getRoomById } from './lib/arcade/room-manager' import { getRoomMembers, getUserRooms, setMemberOnline } from './lib/arcade/room-membership' import { getRoomActivePlayers, getRoomPlayerIds } from './lib/arcade/player-manager' import { getValidator, type GameName } from './lib/arcade/validators' import type { GameMove } from './lib/arcade/validation/types' import { getGameConfig } from './lib/arcade/game-config-helpers' import { canPerformAction, isParentOf } from './lib/classroom' import { incrementShareViewCount, validateSessionShare } from './lib/session-share' import { getRemoteCameraSession, markPhoneConnected, markPhoneDisconnected, } from './lib/remote-camera/session-manager' import { createRedisClient } from './lib/redis' import { VisionRecorder, type VisionFrame, type PracticeStateInput } from './lib/vision/recording' import { socketConnections, socketConnectionsTotal } from './lib/metrics' // Throttle map for DVR buffer info emissions (sessionId -> last emit timestamp) const lastDvrBufferInfoEmit = new Map<string, number>() // Server-side mismatch timers for matching game (keyed by roomId or solo-userId) const activeMismatchTimers = new Map<string, ReturnType<typeof setTimeout>>() // Yjs server-side imports import * as Y from 'yjs' import * as awarenessProtocol from 'y-protocols/awareness' import * as syncProtocol from 'y-protocols/sync' import * as encoding from 'lib0/encoding' import * as decoding from 'lib0/decoding' // Use globalThis to store socket.io instance to avoid module isolation issues // This ensures the same instance is accessible across dynamic imports declare global { var __socketIO: SocketIOServerType | undefined var __yjsRooms: Map<string, any> | undefined // Map<roomId, RoomState> } /** * Get the socket.io server instance * Returns null if not initialized */ export function getSocketIO(): SocketIOServerType | null { return globalThis.__socketIO || null } /** * Initialize Yjs WebSocket server for real-time collaboration * Server-authoritative approach - maintains Y.Doc per arcade room, handles sync protocol * * IMPORTANT: Yjs rooms map 1:1 with arcade rooms (roomId === arcade room ID) */ function initializeYjsServer(io: SocketIOServerType) { // Room state storage (keyed by arcade room ID) interface RoomState { doc: Y.Doc awareness: awarenessProtocol.Awareness connections: Set<string> // Socket IDs } const rooms = new Map<string, RoomState>() // Map<arcadeRoomId, RoomState> const socketToRoom = new Map<string, string>() // Map<socketId, roomId> // Store rooms globally for persistence access globalThis.__yjsRooms = rooms function getOrCreateRoom(roomName: string): RoomState { if (!rooms.has(roomName)) { const doc = new Y.Doc() const awareness = new awarenessProtocol.Awareness(doc) // Broadcast document updates to all clients via Socket.IO doc.on('update', (update: Uint8Array, origin: any) => { // Origin is the socket ID that sent the update, don't echo back to sender const encoder = encoding.createEncoder() encoding.writeVarUint(encoder, 0) // messageSync syncProtocol.writeUpdate(encoder, update) const message = encoding.toUint8Array(encoder) // Broadcast to all sockets in this room except origin io.to(`yjs:${roomName}`) .except(origin as string) .emit('yjs-update', Array.from(message)) }) // Broadcast awareness updates to all clients via Socket.IO awareness.on('update', ({ added, updated, removed }: any, origin: any) => { const changedClients = added.concat(updated).concat(removed) const encoder = encoding.createEncoder() encoding.writeVarUint(encoder, 1) // messageAwareness encoding.writeVarUint8Array( encoder, awarenessProtocol.encodeAwarenessUpdate(awareness, changedClients) ) const message = encoding.toUint8Array(encoder) // Broadcast to all sockets in this room except origin io.to(`yjs:${roomName}`) .except(origin as string) .emit('yjs-awareness', Array.from(message)) }) const roomState: RoomState = { doc, awareness, connections: new Set(), } rooms.set(roomName, roomState) console.log(`✅ Created Y.Doc for room: ${roomName}`) // Load persisted state asynchronously (don't block connection) void loadPersistedYjsState(roomName).catch((err) => { console.error(`Failed to load persisted state for room ${roomName}:`, err) }) } return rooms.get(roomName)! } // Handle Yjs connections via Socket.IO io.on('connection', (socket) => { // Join Yjs room socket.on('yjs-join', async (roomId: string) => { const room = getOrCreateRoom(roomId) // Join Socket.IO room await socket.join(`yjs:${roomId}`) room.connections.add(socket.id) socketToRoom.set(socket.id, roomId) console.log(`🔗 Client connected to Yjs room: ${roomId} (${room.connections.size} clients)`) // Send initial sync (SyncStep1) const encoder = encoding.createEncoder() encoding.writeVarUint(encoder, 0) // messageSync syncProtocol.writeSyncStep1(encoder, room.doc) socket.emit('yjs-sync', Array.from(encoding.toUint8Array(encoder))) // Send current awareness state const awarenessStates = room.awareness.getStates() if (awarenessStates.size > 0) { const awarenessEncoder = encoding.createEncoder() encoding.writeVarUint(awarenessEncoder, 1) // messageAwareness encoding.writeVarUint8Array( awarenessEncoder, awarenessProtocol.encodeAwarenessUpdate( room.awareness, Array.from(awarenessStates.keys()) ) ) socket.emit('yjs-awareness', Array.from(encoding.toUint8Array(awarenessEncoder))) } }) // Handle Yjs sync messages socket.on('yjs-update', (data: number[]) => { const roomId = socketToRoom.get(socket.id) if (!roomId) return const room = rooms.get(roomId) if (!room) return const uint8Data = new Uint8Array(data) const decoder = decoding.createDecoder(uint8Data) const messageType = decoding.readVarUint(decoder) if (messageType === 0) { // Sync protocol const encoder = encoding.createEncoder() encoding.writeVarUint(encoder, 0) syncProtocol.readSyncMessage(decoder, encoder, room.doc, socket.id) // Send response if there's content if (encoding.length(encoder) > 1) { socket.emit('yjs-sync', Array.from(encoding.toUint8Array(encoder))) } } }) // Handle awareness updates socket.on('yjs-awareness', (data: number[]) => { const roomId = socketToRoom.get(socket.id) if (!roomId) return const room = rooms.get(roomId) if (!room) return const uint8Data = new Uint8Array(data) const decoder = decoding.createDecoder(uint8Data) const messageType = decoding.readVarUint(decoder) if (messageType === 1) { awarenessProtocol.applyAwarenessUpdate( room.awareness, decoding.readVarUint8Array(decoder), socket.id ) } }) // Cleanup on disconnect socket.on('disconnect', () => { const roomId = socketToRoom.get(socket.id) if (roomId) { const room = rooms.get(roomId) if (room) { room.connections.delete(socket.id) console.log( `🔌 Client disconnected from Yjs room: ${roomId} (${room.connections.size} remain)` ) // Clean up empty rooms after grace period if (room.connections.size === 0) { setTimeout(() => { if (room.connections.size === 0) { room.awareness.destroy() room.doc.destroy() rooms.delete(roomId) console.log(`🗑️ Cleaned up room: ${roomId}`) } }, 30000) } } socketToRoom.delete(socket.id) } }) }) console.log('✅ Yjs over Socket.IO initialized') // Periodic persistence: sync Y.Doc state to arcade_sessions every 30 seconds setInterval(() => { persistAllYjsRooms().catch((error) => { console.error('Error in periodic Yjs persistence:', error) }) }, 30000) } /** * Get Y.Doc for a specific room (for persistence) * Returns null if room doesn't exist */ export function getYjsDoc(roomId: string): Y.Doc | null { const rooms = globalThis.__yjsRooms if (!rooms) return null const room = rooms.get(roomId) return room ? room.doc : null } /** * Load persisted cells into a Y.Doc * Should be called when creating a new room that has persisted state */ export async function loadPersistedYjsState(roomId: string): Promise<void> { const { extractCellsFromDoc, populateDocWithCells } = await import('./lib/arcade/yjs-persistence') const doc = getYjsDoc(roomId) if (!doc) return // Get the arcade session for this room const session = await getArcadeSessionByRoom(roomId) if (!session) return const gameState = session.gameState as any if (gameState.cells && Array.isArray(gameState.cells)) { console.log(`📥 Loading ${gameState.cells.length} persisted cells for room: ${roomId}`) populateDocWithCells(doc, gameState.cells) } } /** * Persist Y.Doc cells for a specific room to arcade_sessions */ export async function persistYjsRoom(roomId: string): Promise<void> { try { const { extractCellsFromDoc } = await import('./lib/arcade/yjs-persistence') const { db, schema } = await import('@/db') const { eq } = await import('drizzle-orm') const doc = getYjsDoc(roomId) if (!doc) return const session = await getArcadeSessionByRoom(roomId) if (!session) return // Extract cells from Y.Doc const cells = extractCellsFromDoc(doc, 'cells') // Update the gameState with current cells const currentState = session.gameState as Record<string, any> const updatedGameState = { ...currentState, cells, } // Save to database await db .update(schema.arcadeSessions) .set({ gameState: updatedGameState as any, lastActivityAt: new Date(), }) .where(eq(schema.arcadeSessions.roomId, roomId)) } catch (error) { console.error(`Error persisting Yjs room ${roomId}:`, error) } } /** * Persist all active Yjs rooms */ export async function persistAllYjsRooms(): Promise<void> { const rooms = globalThis.__yjsRooms if (!rooms || rooms.size === 0) return const roomIds = Array.from(rooms.keys()) for (const roomId of roomIds) { // Only persist rooms with active connections const room = rooms.get(roomId) if (room && room.connections.size > 0) { await persistYjsRoom(roomId) } } } export function initializeSocketServer(httpServer: HTTPServer) { const io = new SocketIOServer(httpServer, { path: '/api/socket', cors: { origin: process.env.NEXT_PUBLIC_URL || 'http://localhost:3000', credentials: true, }, }) // Set up Redis adapter for cross-instance Socket.IO broadcasts (production only) // In dev without Redis, Socket.IO works normally on single instance const pubClient = createRedisClient() if (pubClient) { const subClient = pubClient.duplicate() io.adapter(createAdapter(pubClient, subClient)) console.log('[Socket.IO] Redis adapter configured for cross-instance communication') } else { console.log('[Socket.IO] No Redis available, using default in-memory adapter (single instance)') } // Yjs collaborative editing — disabled until implementation is complete. // Was registering extra connection handlers + a 30s setInterval on every socket, // and leaking Y.Doc event listeners on room creation. Enable with ENABLE_YJS=true. if (process.env.ENABLE_YJS === 'true') { initializeYjsServer(io) } io.on('connection', (socket) => { // Track Socket.IO connection metrics socketConnections.inc() socketConnectionsTotal.inc() let currentUserId: string | null = null // Join arcade session room socket.on( 'join-arcade-session', async ({ userId, roomId }: { userId: string; roomId?: string }) => { currentUserId = userId socket.join(`arcade:${userId}`) // If this session is part of a room, also join the game room for multi-user sync if (roomId) { socket.join(`game:${roomId}`) } // Send current session state if exists // For room-based games, look up shared room session try { let session = roomId ? await getArcadeSessionByRoom(roomId) : await getArcadeSession(userId) // Get the room to determine the CURRENT game type const room = roomId ? await getRoomById(roomId) : null const currentGameName = room?.gameName as GameName | null // If no session exists for this room, create one in setup phase // This allows users to send SET_CONFIG moves before starting the game if (!session && roomId && room && currentGameName) { // Fetch all active player IDs from room members (respects isActive flag) let roomPlayerIds = await getRoomPlayerIds(roomId) // PRACTICE MODE FIX: If no players found in database but we have a userId, // use the userId as a fallback player. This handles practice sessions where // the student isn't in the players table. if (roomPlayerIds.length === 0 && userId) { roomPlayerIds = [userId] } // Get initial state from the correct validator based on game type const validator = await getValidator(currentGameName) // Get game-specific config from database (type-safe) const gameConfig = await getGameConfig(roomId, currentGameName) let initialState: Record<string, unknown> let usedPracticeBreakInit = false // Check if this is a practice break that should skip setup phase const typedConfig = gameConfig as Record<string, unknown> | undefined if ( typedConfig?.skipSetupPhase && validator.getInitialStateForPracticeBreak && roomPlayerIds.length > 0 ) { // Server-side auto-start: create session directly in playing/display phase const practiceBreakOptions: Record<string, unknown> = { maxDurationMinutes: (typedConfig.maxDurationMinutes as number) ?? 5, playerId: roomPlayerIds[0], playerName: (typedConfig.playerName as string) ?? 'Player', userId, } // Pass additional players (co-play observers) if provided if ( Array.isArray(typedConfig.additionalPlayers) && typedConfig.additionalPlayers.length > 0 ) { practiceBreakOptions.additionalPlayers = typedConfig.additionalPlayers } initialState = (await validator.getInitialStateForPracticeBreak( gameConfig, practiceBreakOptions as any )) as Record<string, unknown> usedPracticeBreakInit = true } else { initialState = validator.getInitialState(gameConfig) as Record<string, unknown> } // CRITICAL: Update the game state's activePlayers and currentPlayer // The initialState from validator has empty activePlayers, so we need to // set them before creating the session. Without this, moves will fail // with "playerId is required" errors. // Skip this when getInitialStateForPracticeBreak already set up players // (it initializes activePlayers, currentPlayer, and playerMetadata itself) if (!usedPracticeBreakInit && roomPlayerIds.length > 0) { initialState.activePlayers = roomPlayerIds initialState.currentPlayer = roomPlayerIds[0] // Also initialize playerMetadata for the players const existingMetadata = (initialState.playerMetadata as Record<string, unknown>) || {} for (const playerId of roomPlayerIds) { if (!existingMetadata[playerId]) { existingMetadata[playerId] = { id: playerId, name: 'Player', emoji: '🎮', userId: playerId, } } } initialState.playerMetadata = existingMetadata } session = await createArcadeSession({ userId, gameName: currentGameName, gameUrl: '/arcade', initialState, activePlayers: roomPlayerIds, // Include all room members' active players roomId: room.id, }) } if (session && currentGameName) { // Extract the game-specific state from the namespaced storage let gameStateForClient = getGameStateFromSession(session, currentGameName) const validator = await getValidator(currentGameName) const gameConfig = await getGameConfig(roomId!, currentGameName) let needsUpdate = false // CRITICAL: Always update session.currentGame to match room.gameName // This ensures moves are processed for the correct game if (session.currentGame !== currentGameName) { console.log( `[SocketServer] Game mismatch: session.currentGame='${session.currentGame}' but room.gameName='${currentGameName}'. Updating session.` ) needsUpdate = true } // If no state exists for the current game (e.g., game was just switched), // initialize it now if (gameStateForClient === undefined) { gameStateForClient = validator.getInitialState(gameConfig) needsUpdate = true } else if (validator.stateSchema) { // Validate state against schema if validator provides one const parseResult = validator.stateSchema.safeParse(gameStateForClient) if (!parseResult.success) { console.warn( `[SocketServer] INVALID_STATE: State for ${currentGameName} failed schema validation, reinitializing.`, { roomId, issues: parseResult.error.issues.slice(0, 5), // Log first 5 issues } ) gameStateForClient = validator.getInitialState(gameConfig) needsUpdate = true } else { // Use the parsed (and potentially coerced) state gameStateForClient = parseResult.data } } // Update session with new/fixed namespaced state if needed if (needsUpdate) { const { db, schema } = await import('@/db') const { eq } = await import('drizzle-orm') const updatedNamespacedState = setGameStateInNamespace( session.gameState, currentGameName, gameStateForClient ) await db .update(schema.arcadeSessions) .set({ gameState: updatedNamespacedState as any, currentGame: currentGameName, // Update currentGame to match version: session.version + 1, }) .where(eq(schema.arcadeSessions.roomId, session.roomId)) session.version += 1 } socket.emit('session-state', { gameState: gameStateForClient, // Send only the current game's state currentGame: currentGameName, // Use room's game, not session's (might be stale) gameUrl: session.gameUrl, activePlayers: session.activePlayers, version: session.version, }) } else if (session) { // No room context, send as-is (legacy solo game support) socket.emit('session-state', { gameState: session.gameState, currentGame: session.currentGame, gameUrl: session.gameUrl, activePlayers: session.activePlayers, version: session.version, }) } else { socket.emit('no-active-session') } } catch (error) { console.error('Error fetching session:', error) socket.emit('session-error', { error: error instanceof Error ? error.message : 'Failed to fetch session', }) } } ) // Handle game moves socket.on('game-move', async (data: { userId: string; move: GameMove; roomId?: string }) => { try { // Special handling for START_GAME - create session if it doesn't exist if (data.move.type === 'START_GAME') { // For room-based games, check if room session exists const existingSession = data.roomId ? await getArcadeSessionByRoom(data.roomId) : await getArcadeSession(data.userId) if (!existingSession) { // activePlayers must be provided in the START_GAME move data const activePlayers = (data.move.data as any)?.activePlayers if (!activePlayers || activePlayers.length === 0) { socket.emit('move-rejected', { error: 'START_GAME requires at least one active player', move: data.move, }) return } // Get initial state from validator (this code path is matching-game specific) const matchingValidator = await getValidator('matching') const initialState = matchingValidator.getInitialState({ difficulty: 6, gameType: 'abacus-numeral', turnTimer: 30, }) // Check if user is already in a room for this game const userRoomIds = await getUserRooms(data.userId) let room = null // Look for an existing active room for this game for (const roomId of userRoomIds) { const existingRoom = await getRoomById(roomId) if ( existingRoom && existingRoom.gameName === 'matching' && existingRoom.status !== 'finished' ) { room = existingRoom break } } // If no suitable room exists, create a new one if (!room) { room = await createRoom({ name: 'Auto-generated Room', createdBy: data.userId, creatorName: 'Player', gameName: 'matching' as GameName, gameConfig: { difficulty: 6, gameType: 'abacus-numeral', turnTimer: 30, }, ttlMinutes: 60, }) } // Now create the session linked to the room await createArcadeSession({ userId: data.userId, gameName: 'matching', gameUrl: '/arcade', // Room-based sessions use /arcade initialState, activePlayers, roomId: room.id, }) // Notify all connected clients about the new session const newSession = await getArcadeSession(data.userId) if (newSession) { // Extract game-specific state from namespaced storage const gameStateForClient = getGameStateFromSession(newSession, newSession.currentGame) io!.to(`arcade:${data.userId}`).emit('session-state', { gameState: gameStateForClient, // Send only the current game's state currentGame: newSession.currentGame, gameUrl: newSession.gameUrl, activePlayers: newSession.activePlayers, version: newSession.version, }) } } } // Apply game move - use roomId for room-based games to access shared session const result = await applyGameMove(data.userId, data.move, data.roomId) if (result.success && result.session) { // Extract game-specific state from namespaced storage const gameName = result.session.currentGame const gameStateForClient = getGameStateFromSession(result.session, gameName) const moveAcceptedData = { gameState: gameStateForClient, // Send only the current game's state version: result.session.version, move: data.move, } // Broadcast to game room (all clients join game:${roomId}), or personal channel for solo sessions if (result.session.roomId) { io!.to(`game:${result.session.roomId}`).emit('move-accepted', moveAcceptedData) } else { io!.to(`arcade:${data.userId}`).emit('move-accepted', moveAcceptedData) } // Update activity timestamp await updateSessionActivity(data.userId) // Server-side mismatch timer for matching game // When a FLIP_CARD results in a mismatch, schedule CLEAR_MISMATCH server-side // to avoid client-server race conditions on multi-replica deployments const matchingState = gameStateForClient as Record<string, unknown> | undefined if (data.move.type === 'FLIP_CARD' && matchingState?.showMismatchFeedback) { const sessionKey = result.session.roomId || data.userId const existingTimer = activeMismatchTimers.get(sessionKey) if (existingTimer) clearTimeout(existingTimer) // Capture values for the async closure const capturedUserId = data.userId const capturedRoomId = data.roomId const capturedCurrentPlayer = matchingState.currentPlayer as string const timer = setTimeout(async () => { activeMismatchTimers.delete(sessionKey) try { const clearMove: GameMove = { type: 'CLEAR_MISMATCH' as const, playerId: capturedCurrentPlayer, userId: capturedUserId, timestamp: Date.now(), data: {}, } const clearResult = await applyGameMove(capturedUserId, clearMove, capturedRoomId) if (clearResult.success && clearResult.session) { const clearGameState = getGameStateFromSession( clearResult.session, clearResult.session.currentGame! ) const clearAccepted = { gameState: clearGameState, version: clearResult.session.version, move: clearMove, } if (clearResult.session.roomId) { io! .to(`game:${clearResult.session.roomId}`) .emit('move-accepted', clearAccepted) } else { io!.to(`arcade:${capturedUserId}`).emit('move-accepted', clearAccepted) } } } catch (err) { console.error('[mismatch-timer] Failed to clear mismatch:', err) } }, 1500) activeMismatchTimers.set(sessionKey, timer) } } else { // Send rejection only to the requesting socket if (result.versionConflict) { console.warn( `[SocketServer] VERSION_CONFLICT_REJECTED room=${data.roomId} move=${data.move.type} user=${data.userId} socket=${socket.id}` ) } socket.emit('move-rejected', { error: result.error, move: data.move, versionConflict: result.versionConflict, }) } } catch (error) { console.error('Error processing move:', error) socket.emit('move-rejected', { error: error instanceof Error ? error.message : 'Server error processing move', move: data.move, }) } }) // Handle session exit socket.on('exit-arcade-session', async ({ userId }: { userId: string }) => { try { await deleteArcadeSession(userId) io!.to(`arcade:${userId}`).emit('session-ended') } catch (error) { console.error('Error ending session:', error) socket.emit('session-error', { error: error instanceof Error ? error.message : 'Failed to end session', }) } }) // Keep-alive ping socket.on('ping-session', async ({ userId }: { userId: string }) => { try { await updateSessionActivity(userId) socket.emit('pong-session') } catch (error) { console.error('Error updating activity:', error) } }) // Room: Join socket.on('join-room', async ({ roomId, userId }: { roomId: string; userId: string }) => { try { // Join the socket room socket.join(`room:${roomId}`) // Mark member as online await setMemberOnline(roomId, userId, true) // Get room data const members = await getRoomMembers(roomId) const memberPlayers = await getRoomActivePlayers(roomId) // Convert memberPlayers Map to object for JSON serialization const memberPlayersObj: Record<string, any[]> = {} for (const [uid, players] of memberPlayers.entries()) { memberPlayersObj[uid] = players } // Update session's activePlayers if game hasn't started yet // This ensures new members' players are included in the session const roomPlayerIds = await getRoomPlayerIds(roomId) const sessionUpdated = await updateSessionActivePlayers(roomId, roomPlayerIds) if (sessionUpdated) { // Broadcast updated session state to all users in the game room const updatedSession = await getArcadeSessionByRoom(roomId) // Get the room's CURRENT game name (not the session's potentially stale one) const roomForJoinEvent = await getRoomById(roomId) const currentRoomGameForJoin = roomForJoinEvent?.gameName as string | undefined if (updatedSession && currentRoomGameForJoin) { // Extract game-specific state from namespaced storage using ROOM's game name const gameStateForClient = getGameStateFromSession( updatedSession, currentRoomGameForJoin ) io!.to(`game:${roomId}`).emit('session-state', { gameState: gameStateForClient, // Send only the current game's state currentGame: currentRoomGameForJoin, // Use room's game, not session's gameUrl: updatedSession.gameUrl, activePlayers: updatedSession.activePlayers, version: updatedSession.version, }) } } // Send current room state to the joining user socket.emit('room-joined', { roomId, members, memberPlayers: memberPlayersObj, }) // Notify all other members in the room socket.to(`room:${roomId}`).emit('member-joined', { roomId, userId, members, memberPlayers: memberPlayersObj, }) } catch (error) { console.error('Error joining room:', error) socket.emit('room-error', { error: error instanceof Error ? error.message : 'Failed to join room', }) } }) // User Channel: Join (for moderation events) socket.on('join-user-channel', async ({ userId }: { userId: string }) => { try { // Join user-specific channel for moderation notifications socket.join(`user:${userId}`) } catch (error) { console.error('Error joining user channel:', error) } }) // Room: Leave socket.on('leave-room', async ({ roomId, userId }: { roomId: string; userId: string }) => { try { // Leave the socket room socket.leave(`room:${roomId}`) // Mark member as offline await setMemberOnline(roomId, userId, false) // Get updated members const members = await getRoomMembers(roomId) const memberPlayers = await getRoomActivePlayers(roomId) // Convert memberPlayers Map to object const memberPlayersObj: Record<string, any[]> = {} for (const [uid, players] of memberPlayers.entries()) { memberPlayersObj[uid] = players } // Notify remaining members io!.to(`room:${roomId}`).emit('member-left', { roomId, userId, members, memberPlayers: memberPlayersObj, }) } catch (error) { console.error('Error leaving room:', error) } }) // Room: Players updated socket.on('players-updated', async ({ roomId, userId }: { roomId: string; userId: string }) => { try { // Get updated player data const memberPlayers = await getRoomActivePlayers(roomId) // Convert memberPlayers Map to object const memberPlayersObj: Record<string, any[]> = {} for (const [uid, players] of memberPlayers.entries()) { memberPlayersObj[uid] = players } // Update session's activePlayers if game hasn't started yet const roomPlayerIds = await getRoomPlayerIds(roomId) const sessionUpdated = await updateSessionActivePlayers(roomId, roomPlayerIds) if (sessionUpdated) { // Broadcast updated session state to all users in the game room const updatedSession = await getArcadeSessionByRoom(roomId) // Get the room's CURRENT game name (not the session's potentially stale one) const roomForPlayersUpdate = await getRoomById(roomId) const currentRoomGameForPlayers = roomForPlayersUpdate?.gameName as string | undefined if (updatedSession && currentRoomGameForPlayers) { // Extract game-specific state from namespaced storage using ROOM's game name const gameStateForClient = getGameStateFromSession( updatedSession, currentRoomGameForPlayers ) io!.to(`game:${roomId}`).emit('session-state', { gameState: gameStateForClient, // Send only the current game's state currentGame: currentRoomGameForPlayers, // Use room's game, not session's gameUrl: updatedSession.gameUrl, activePlayers: updatedSession.activePlayers, version: updatedSession.version, }) } } // Broadcast to all members in the room (including sender) io!.to(`room:${roomId}`).emit('room-players-updated', { roomId, memberPlayers: memberPlayersObj, }) } catch (error) { console.error('Error updating room players:', error) socket.emit('room-error', { error: error instanceof Error ? error.message : 'Failed to update players', }) } }) // Cursor position update (ephemeral, not persisted) // Used for showing other players' cursors in real-time games socket.on( 'cursor-update', ({ roomId, playerId, userId, cursorPosition, hoveredRegionId, }: { roomId: string playerId: string userId: string // Session ID that owns this cursor cursorPosition: { x: number; y: number } | null // SVG coordinates, null when cursor leaves hoveredRegionId: string | null // Region being hovered (determined by sender's local hit-testing) }) => { // Broadcast to all other sockets in the game room (exclude sender) socket.to(`game:${roomId}`).emit('cursor-update', { playerId, userId, cursorPosition, hoveredRegionId, }) } ) // Classroom: Join classroom channel (for teachers to receive presence updates) socket.on('join-classroom', async ({ classroomId }: { classroomId: string }) => { try { await socket.join(`classroom:${classroomId}`) console.log(`🏫 User joined classroom channel: ${classroomId}`) } catch (error) { console.error('Error joining classroom channel:', error) } }) // Classroom: Leave classroom channel socket.on('leave-classroom', async ({ classroomId }: { classroomId: string }) => { try { await socket.leave(`classroom:${classroomId}`) console.log(`🏫 User left classroom channel: ${classroomId}`) } catch (error) { console.error('Error leaving classroom channel:', error) } }) // Player: Join player channel (for students to receive their own presence updates) socket.on('join-player', async ({ playerId }: { playerId: string }) => { try { await socket.join(`player:${playerId}`) console.log(`👤 User joined player channel: ${playerId}`) } catch (error) { console.error('Error joining player channel:', error) } }) // Player: Leave player channel socket.on('leave-player', async ({ playerId }: { playerId: string }) => { try { await socket.leave(`player:${playerId}`) console.log(`👤 User left player channel: ${playerId}`) } catch (error) { console.error('Error leaving player channel:', error) } }) // Session Observation: Join session channel (for students to receive observer-joined events) socket.on('join-session', async ({ sessionId }: { sessionId: string }) => { try { await socket.join(`session:${sessionId}`) console.log(`📝 Student joined session channel: ${sessionId}`) } catch (error) { console.error('Error joining session channel:', error) } }) // Session Stats: Subscribe to session updates (read-only, for time estimates in history list) // This is a lightweight alternative to full observation - just receives practice-state events socket.on('subscribe-session-stats', async ({ sessionId }: { sessionId: string }) => { try { await socket.join(`session:${sessionId}`) console.log(`📊 Stats subscriber joined session channel: ${sessionId}`) } catch (error) { console.error('Error subscribing to session stats:', error) } }) // Session Stats: Unsubscribe from session updates socket.on('unsubscribe-session-stats', async ({ sessionId }: { sessionId: string }) => { try { await socket.leave(`session:${sessionId}`) console.log(`📊 Stats subscriber left session channel: ${sessionId}`) } catch (error) { console.error('Error unsubscribing from session stats:', error) } }) // Session Observation: Start observing a practice session // Supports both authenticated observers (parent/teacher) and token-based shared observers socket.on( 'observe-session', async ({ sessionId, observerId, playerId, shareToken, }: { sessionId: string observerId?: string playerId?: string shareToken?: string }) => { try { // Token-based authentication (shareable links - no user login required) if (shareToken) { const validation = await validateSessionShare(shareToken) if (!validation.valid) { console.log(`⚠️ Share token validation failed: ${validation.error}`) socket.emit('observe-error', { error: validation.error || 'Invalid share link', }) return } // Increment view count await incrementShareViewCount(shareToken) // Mark this socket as a shared observer (view-only, no controls) socket.data.isSharedObserver = true socket.data.shareToken = shareToken await socket.join(`session:${sessionId}`) console.log( `👁️ Shared observer joined session: ${sessionId} (token: ${shareToken.substring(0, 4)}...)` ) // Send initial DVR buffer info if recording is active const sharedRecorder = VisionRecorder.getInstance() const isRecording = sharedRecorder.isRecording(sessionId) console.log(`[Socket] Shared observer joined, checking DVR: isRecording=${isRecording}`) if (isRecording) { const bufferInfo = sharedRecorder.getDvrBufferInfo(sessionId) console.log(`[Socket] Initial DVR buffer info for shared observer:`, bufferInfo) if (bufferInfo) { socket.emit('vision-buffer-info', { sessionId, ...bufferInfo, }) } } // Notify session that a guest observer joined socket.to(`session:${sessionId}`).emit('observer-joined', { observerId: 'guest', isGuest: true, }) return } // Authenticated observer flow (parent or teacher-present) if (!observerId) { socket.emit('observe-error', { error: 'Observer ID required' }) return } // Authorization check: require 'observe' permission (parent or teacher-present) if (playerId) { const canObserve = await canPerformAction(observerId, playerId, 'observe') if (!canObserve) { console.log( `⚠️ Observation denied - ${observerId} not authorized for player ${playerId}` ) socket.emit('observe-error', { error: 'Not authorized to observe this session', }) return } } // Mark as authenticated observer (has controls) socket.data.isSharedObserver = false await socket.join(`session:${sessionId}`) console.log(`👁️ Observer ${observerId} started watching session: ${sessionId}`) // Send initial DVR buffer info if recording is active const authRecorder = VisionRecorder.getInstance() const isRecordingAuth = authRecorder.isRecording(sessionId) console.log(`[Socket] Auth observer joined, checking DVR: isRecording=${isRecordingAuth}`) if (isRecordingAuth) { const bufferInfo = authRecorder.getDvrBufferInfo(sessionId) console.log(`[Socket] Initial DVR buffer info for auth observer:`, bufferInfo) if (bufferInfo) { socket.emit('vision-buffer-info', { sessionId, ...bufferInfo, }) } } // Notify session that an observer joined socket.to(`session:${sessionId}`).emit('observer-joined', { observerId }) } catch (error) { console.error('Error starting session observation:', error) socket.emit('observe-error', { error: 'Failed to start observation', }) } } ) // Session Observation: Stop observing a practice session socket.on('stop-observing', async ({ sessionId }: { sessionId: string }) => { try { await socket.leave(`session:${sessionId}`) console.log(`👁️ Observer stopped watching session: ${sessionId}`) } catch (error) { console.error('Error stopping session observation:', error) } }) // Session Observation: Broadcast practice state (from student's client) socket.on( 'practice-state', (data: { sessionId: string currentProblem: { terms: number[]; answer: number } | unknown phase: 'problem' | 'feedback' | 'tutorial' studentAnswer: string isCorrect: boolean | null currentProblemNumber: number timing: { startedAt: number; elapsed: number } }) => { // Forward practice state to VisionRecorder for metadata capture // Only processes if there's an active recording for this session const recorder = VisionRecorder.getInstance() const currentProblem = data.currentProblem as | { terms: number[]; answer: number } | undefined if (currentProblem && 'terms' in currentProblem && 'answer' in currentProblem) { const practiceState: PracticeStateInput = { currentProblem, phase: data.phase, studentAnswer: data.studentAnswer, isCorrect: data.isCorrect, currentProblemNumber: data.currentProblemNumber, } recorder.onPracticeState(data.sessionId, practiceState) } // Broadcast to all observers in the session channel socket.to(`session:${data.sessionId}`).emit('practice-state', data) } ) // Session Observation: Broadcast part transition (from student's client) socket.on( 'part-transition', (data: { sessionId: string previousPartType: string | null nextPartType: string countdownStartTime: number countdownDurationMs: number }) => { socket.to(`session:${data.sessionId}`).emit('part-transition', data) } ) // Session Observation: Broadcast part transition complete (from student's client) socket.on('part-transition-complete', (data: { sessionId: string }) => { socket.to(`session:${data.sessionId}`).emit('part-transition-complete', data) }) // Session Observation: Broadcast authoritative flow state (from student's client) socket.on( 'session-flow-state', (data: { sessionId: string; flowState: string; breakContext?: unknown }) => { console.log( `[FlowState] Relaying session-flow-state: session=${data.sessionId}, flowState=${data.flowState}, hasBreakContext=${!!data.breakContext}` ) socket.to(`session:${data.sessionId}`).emit('session-flow-state', data) } ) // Observer co-play readiness: relay to session channel // Track readiness per socket for disconnect cleanup const coPlayReadySessions = new Map<string, { observerId: string }>() socket.on( 'observer-coplay-ready', (data: { sessionId: string; observerId: string; player: unknown }) => { console.log( `[CoPlay] Observer ready: session=${data.sessionId}, observer=${data.observerId}` ) coPlayReadySessions.set(data.sessionId, { observerId: data.observerId }) socket.to(`session:${data.sessionId}`).emit('observer-coplay-ready', data) } ) socket.on('observer-coplay-leave', (data: { sessionId: string; observerId: string }) => { console.log( `[CoPlay] Observer leaving: session=${data.sessionId}, observer=${data.observerId}` ) coPlayReadySessions.delete(data.sessionId) socket.to(`session:${data.sessionId}`).emit('observer-coplay-leave', data) }) // Session Observation: Broadcast tutorial state (from student's client) socket.on( 'tutorial-state', (data: { sessionId: string; currentStep: number; totalSteps: number; content: unknown }) => { // Broadcast to all observers in the session channel socket.to(`session:${data.sessionId}`).emit('tutorial-state', data) } ) // Session Observation: Tutorial control from observer // Shared observers (via token) are view-only and cannot control socket.on( 'tutorial-control', (data: { sessionId: string; action: 'skip' | 'next' | 'previous' }) => { // Reject if shared observer (view-only) if (socket.data.isSharedObserver) { console.log('[Socket] tutorial-control rejected - shared observer is view-only') return } // Send control command to student's client io!.to(`session:${data.sessionId}`).emit('tutorial-control', data) } ) // Session Observation: Abacus control from observer // Shared observers (via token) are view-only and cannot control socket.on( 'abacus-control', (data: { sessionId: string target: 'help' | 'hero' action: 'show' | 'hide' | 'set-value' value?: number }) => { // Reject if shared observer (view-only) if (socket.data.isSharedObserver) { console.log('[Socket] abacus-control rejected - shared observer is view-only') return } // Send control command to student's client io!.to(`session:${data.sessionId}`).emit('abacus-control', data) } ) // Session Observation: Pause command from observer (teacher pauses student's session) // Shared observers (via token) are view-only and cannot control socket.on('session-pause', (data: { sessionId: string; reason: string; message?: string }) => { // Reject if shared observer (view-only) if (socket.data.isSharedObserver) { console.log('[Socket] session-pause rejected - shared observer is view-only') return } console.log('[Socket] session-pause:', data.sessionId, data.message) // Forward pause command to student's client io!.to(`session:${data.sessionId}`).emit('session-paused', data) }) // Session Observation: Resume command from observer (teacher resumes student's session) // Shared observers (via token) are view-only and cannot control socket.on('session-resume', (data: { sessionId: string }) => { // Reject if shared observer (view-only) if (socket.data.isSharedObserver) { console.log('[Socket] session-resume rejected - shared observer is view-only') return } console.log('[Socket] session-resume:', data.sessionId) // Forward resume command to student's client io!.to(`session:${data.sessionId}`).emit('session-resumed', data) }) // Session Observation: Broadcast vision frame from student's abacus camera socket.on( 'vision-frame', async (data: { sessionId: string imageData: string detectedValue: number | null confidence: number timestamp: number }) => { // Broadcast to all observers in the session channel socket.to(`session:${data.sessionId}`).emit('vision-frame', data) // Add frame to recording if active const recorder = VisionRecorder.getInstance() const isRecordingActive = recorder.isRecording(data.sessionId) console.log( `[Socket] vision-frame received for session ${data.sessionId}, isRecording: ${isRecordingActive}` ) if (isRecordingActive) { const frame: VisionFrame = { sessionId: data.sessionId, imageData: data.imageData, detectedValue: data.detectedValue, confidence: data.confidence, timestamp: data.timestamp, } const frameAdded = await recorder.addFrame(frame) console.log(`[Socket] Frame added to recording: ${frameAdded}`) // Emit DVR buffer info to observers (throttled to once per second) if (frameAdded) { const now = Date.now() const lastEmit = lastDvrBufferInfoEmit.get(data.sessionId) || 0 const timeSinceLastEmit = now - lastEmit if (timeSinceLastEmit >= 1000) { const bufferInfo = recorder.getDvrBufferInfo(data.sessionId) console.log(`[Socket] DVR buffer info for ${data.sessionId}:`, bufferInfo) if (bufferInfo) { lastDvrBufferInfoEmit.set(data.sessionId, now) console.log(`[Socket] Emitting vision-buffer-info to session:${data.sessionId}`) socket.to(`session:${data.sessionId}`).emit('vision-buffer-info', { sessionId: data.sessionId, ...bufferInfo, }) } } } } } ) // Vision Recording: Start recording session (per-problem recording) socket.on( 'start-vision-recording', async ({ sessionId, playerId }: { sessionId: string; playerId: string }) => { console.log( `[Socket] Received start-vision-recording for session ${sessionId}, player ${playerId}` ) try { const recorder = VisionRecorder.getInstance() // Set up callbacks for notifying observers when problem videos are ready recorder.setVideoReadyCallback((data) => { console.log( `📹 Problem ${data.problemNumber} video ready for session ${data.sessionId}` ) io?.to(`session:${data.sessionId}`).emit('vision-problem-video-ready', data) }) recorder.setVideoFailedCallback((data) => { console.log( `📹 Problem ${data.problemNumber} video failed for session ${data.sessionId}: ${data.error}` ) io?.to(`session:${data.sessionId}`).emit('vision-problem-video-failed', data) }) // Start the session (no directories created yet - those are per-problem) recorder.startSession(sessionId, playerId) console.log(`📹 Started vision recording session for ${sessionId}`) // Notify the session that recording started socket.emit('vision-recording-started', { sessionId }) socket.to(`session:${sessionId}`).emit('vision-recording-started', { sessionId }) } catch (error) { console.error('Error starting vision recording:', error) socket.emit('vision-recording-error', { sessionId, error: error instanceof Error ? error.message : 'Failed to start recording', }) } } ) // Vision Recording: Stop recording session (finalizes last problem) socket.on('stop-vision-recording', async ({ sessionId }: { sessionId: string }) => { try { const recorder = VisionRecorder.getInstance() await recorder.stopSession(sessionId) console.log(`📹 Stopped vision recording session for ${sessionId}`) // Clean up throttle map lastDvrBufferInfoEmit.delete(sessionId) // Notify the session that recording stopped socket.emit('vision-recording-stopped', { sessionId }) socket.to(`session:${sessionId}`).emit('vision-recording-stopped', { sessionId }) } catch (error) { console.error('Error stopping vision recording:', error) } }) // Vision Recording: Handle problem marker (triggers encoding on problem transitions) // NOTE: Markers are always processed - if no recording session exists, one is auto-started // for metadata-only capture (student answers without video) socket.on( 'vision-problem-marker', async ({ sessionId, problemNumber, partIndex, eventType, isCorrect, epochNumber, attemptNumber, isRetry, isManualRedo, playerId, slotId, problem, }: { sessionId: string problemNumber: number partIndex: number eventType: 'problem-shown' | 'answer-submitted' | 'feedback-shown' isCorrect?: boolean epochNumber?: number attemptNumber?: number isRetry?: boolean isManualRedo?: boolean playerId?: string slotId?: string problem?: { terms: number[]; answer: number } }) => { const recorder = VisionRecorder.getInstance() // Auto-start a metadata-only session if one doesn't exist // This allows capturing student answers even when camera isn't enabled if (!recorder.isRecording(sessionId) && playerId) { console.log( `📝 Auto-starting metadata-only recording session for ${sessionId} (no camera)` ) recorder.startSession(sessionId, playerId) } if (recorder.isRecording(sessionId)) { // This triggers encoding when 'problem-shown' arrives for the next problem await recorder.onProblemMarker(sessionId, { problemNumber, partIndex, eventType, isCorrect, epochNumber: epochNumber ?? 0, attemptNumber: attemptNumber ?? 1, isRetry: isRetry ?? false, isManualRedo: isManualRedo ?? false, slotId: slotId ?? '', problem, }) } } ) // Vision Recording: DVR scrub request (get frame at offset) socket.on( 'vision-scrub', ({ sessionId, offsetMs }: { sessionId: string; offsetMs: number }) => { const recorder = VisionRecorder.getInstance() const frame = recorder.getDvrFrame(sessionId, offsetMs) if (frame) { socket.emit('vision-scrub-frame', { sessionId, imageData: frame.imageData, timestamp: frame.timestamp, offsetMs, }) } } ) // Vision Recording: Get DVR buffer availability info socket.on('vision-buffer-info', ({ sessionId }: { sessionId: string }) => { const recorder = VisionRecorder.getInstance() const info = recorder.getDvrBufferInfo(sessionId) socket.emit('vision-buffer-info', { sessionId, available: info !== null, ...(info || {}), }) }) // Skill Tutorial: Broadcast state from student to classroom (for teacher observation) // The student joins the classroom channel and emits their tutorial state socket.on( 'skill-tutorial-state', (data: { playerId: string playerName: string launcherState: 'intro' | 'tutorial' | 'complete' skillId: string skillTitle: string tutorialState?: { currentStepIndex: number totalSteps: number currentMultiStep: number totalMultiSteps: number currentValue: number targetValue: number startValue: number isStepCompleted: boolean problem: string description: string currentInstruction: string } }) => { // Broadcast to all other sockets in the classroom channel (including teacher) // The student is already in the classroom channel, so use socket.rooms to find it for (const room of socket.rooms) { if (room.startsWith('classroom:')) { socket.to(room).emit('skill-tutorial-state', data) console.log( `📚 Skill tutorial state broadcast to ${room}:`, data.playerId, data.launcherState ) } } } ) // Skill Tutorial: Control from teacher to student // Teacher sends control action, we broadcast to the classroom so the student receives it socket.on( 'skill-tutorial-control', (data: { playerId: string action: | { type: 'start-tutorial' } | { type: 'skip-tutorial' } | { type: 'next-step' } | { type: 'previous-step' } | { type: 'go-to-step'; stepIndex: number } | { type: 'set-abacus-value'; value: number } | { type: 'advance-multi-step' } | { type: 'previous-multi-step' } }) => { // Broadcast to all sockets in the classroom channel so the target student receives it for (const room of socket.rooms) { if (room.startsWith('classroom:')) { io!.to(room).emit('skill-tutorial-control', data) console.log( `🎮 Skill tutorial control sent to ${room}:`, data.playerId, data.action.type ) } } } ) // Parent Observation: Subscribe to child session events // Parents join player:${childId} channels to receive session-started/session-ended events socket.on( 'subscribe-child-sessions', async ({ userId, childIds }: { userId: string; childIds: string[] }) => { try { for (const childId of childIds) { // Verify parent-child relationship const isParent = await isParentOf(userId, childId) if (isParent) { await socket.join(`player:${childId}`) console.log(`👪 Parent ${userId} subscribed to child sessions: ${childId}`) } else { console.log(`⚠️ Parent subscription denied - ${userId} is not parent of ${childId}`) } } } catch (error) { console.error('Error subscribing to child sessions:', error) } } ) // Parent Observation: Unsubscribe from child session events socket.on( 'unsubscribe-child-sessions', async ({ userId, childIds }: { userId: string; childIds: string[] }) => { try { for (const childId of childIds) { await socket.leave(`player:${childId}`) console.log(`👪 Parent ${userId} unsubscribed from child sessions: ${childId}`) } } catch (error) { console.error('Error unsubscribing from child sessions:', error) } } ) // Remote Camera: Phone joins a remote camera session socket.on('remote-camera:join', async ({ sessionId }: { sessionId: string }) => { try { const session = await getRemoteCameraSession(sessionId) if (!session) { socket.emit('remote-camera:error', { error: 'Invalid or expired session', }) return } // Mark phone as connected await markPhoneConnected(sessionId) // Join the session room await socket.join(`remote-camera:${sessionId}`) // Store session ID on socket for cleanup on disconnect socket.data.remoteCameraSessionId = sessionId console.log(`📱 Phone connected to remote camera session: ${sessionId}`) // Notify desktop that phone is connected socket.to(`remote-camera:${sessionId}`).emit('remote-camera:connected', { phoneConnected: true, }) } catch (error) { console.error('Error joining remote camera session:', error) socket.emit('remote-camera:error', { error: 'Failed to join session', }) } }) // Remote Camera: Desktop subscribes to receive frames socket.on('remote-camera:subscribe', async ({ sessionId }: { sessionId: string }) => { try { const session = await getRemoteCameraSession(sessionId) if (!session) { socket.emit('remote-camera:error', { error: 'Invalid or expired session', }) return } await socket.join(`remote-camera:${sessionId}`) console.log(`🖥️ Desktop subscribed to remote camera session: ${sessionId}`) // Send current connection status socket.emit('remote-camera:status', { phoneConnected: session.phoneConnected, }) } catch (error) { console.error('Error subscribing to remote camera session:', error) socket.emit('remote-camera:error', { error: 'Failed to subscribe' }) } }) // Remote Camera: Phone sends frame to desktop (raw or cropped) socket.on( 'remote-camera:frame', ({ sessionId, imageData, timestamp, mode, videoDimensions, detectedCorners, }: { sessionId: string imageData: string // Base64 JPEG timestamp: number mode?: 'raw' | 'cropped' videoDimensions?: { width: number; height: number } detectedCorners?: { topLeft: { x: number; y: number } topRight: { x: number; y: number } bottomLeft: { x: number; y: number } bottomRight: { x: number; y: number } } | null }) => { // Log frame relay (only for raw mode to reduce spam) if (mode === 'raw') { console.log(`[SERVER] Relaying frame: mode=${mode}, hasCorners=${!!detectedCorners}`) } // Forward frame to desktop (all other sockets in the room) socket.to(`remote-camera:${sessionId}`).emit('remote-camera:frame', { imageData, timestamp, mode, videoDimensions, detectedCorners, }) } ) // Remote Camera: Phone sends calibration data to desktop socket.on( 'remote-camera:calibration', ({ sessionId, corners, columnCount, }: { sessionId: string corners: { topLeft: { x: number; y: number } topRight: { x: number; y: number } bottomRight: { x: number; y: number } bottomLeft: { x: number; y: number } } columnCount: number }) => { // Forward calibration data to desktop socket.to(`remote-camera:${sessionId}`).emit('remote-camera:calibration', { corners, columnCount, }) } ) // Remote Camera: Desktop sets frame mode (raw = uncropped, cropped = use calibration) socket.on( 'remote-camera:set-mode', ({ sessionId, mode }: { sessionId: string; mode: 'raw' | 'cropped' }) => { // Forward mode change to phone socket.to(`remote-camera:${sessionId}`).emit('remote-camera:set-mode', { mode, }) console.log(`🖥️ Desktop set remote camera mode to: ${mode}`) } ) // Remote Camera: Desktop sends calibration corners to phone // When preview=true, phone stays in raw mode for live calibration preview // When preview=false (default), phone switches to cropped mode for practice socket.on( 'remote-camera:set-calibration', ({ sessionId, corners, columnCount, preview, }: { sessionId: string corners: { topLeft: { x: number; y: number } topRight: { x: number; y: number } bottomRight: { x: number; y: number } bottomLeft: { x: number; y: number } } columnCount?: number preview?: boolean }) => { // Forward calibration to phone (including columnCount and preview flag) socket.to(`remote-camera:${sessionId}`).emit('remote-camera:set-calibration', { corners, columnCount, preview, }) console.log( `🖥️ Desktop set remote camera calibration (columns: ${columnCount}, preview: ${preview ?? false})` ) } ) // Remote Camera: Desktop clears calibration (tell phone to go back to auto-detection) socket.on('remote-camera:clear-calibration', ({ sessionId }: { sessionId: string }) => { // Forward clear calibration to phone socket.to(`remote-camera:${sessionId}`).emit('remote-camera:clear-calibration', {}) console.log(`🖥️ Desktop cleared remote camera calibration`) }) // Remote Camera: Desktop commands phone to toggle torch socket.on( 'remote-camera:set-torch', ({ sessionId, on }: { sessionId: string; on: boolean }) => { // Forward torch command to phone socket.to(`remote-camera:${sessionId}`).emit('remote-camera:set-torch', { on }) console.log(`🖥️ Desktop set remote camera torch: ${on}`) } ) // Remote Camera: Phone reports torch state to desktop socket.on( 'remote-camera:torch-state', ({ sessionId, isTorchOn, isTorchAvailable, }: { sessionId: string isTorchOn: boolean isTorchAvailable: boolean }) => { // Forward torch state to desktop socket.to(`remote-camera:${sessionId}`).emit('remote-camera:torch-state', { isTorchOn, isTorchAvailable, }) } ) // Remote Camera: Leave session socket.on('remote-camera:leave', async ({ sessionId }: { sessionId: string }) => { try { await socket.leave(`remote-camera:${sessionId}`) // If this was the phone, mark as disconnected if (socket.data.remoteCameraSessionId === sessionId) { await markPhoneDisconnected(sessionId) socket.data.remoteCameraSessionId = undefined console.log(`📱 Phone left remote camera session: ${sessionId}`) // Notify desktop socket.to(`remote-camera:${sessionId}`).emit('remote-camera:disconnected', { phoneConnected: false, }) } } catch (error) { console.error('Error leaving remote camera session:', error) } }) // Background Tasks: Subscribe to task updates socket.on('task:subscribe', async (taskId: string) => { console.log(`[SocketServer] task:subscribe received for task ${taskId}`) const { getTaskStateForClient, getTaskEvents } = await import('./lib/task-manager') socket.join(`task:${taskId}`) console.log(`[SocketServer] Socket ${socket.id} joined room task:${taskId}`) // Fetch current task state (lightweight version without large input data) const task = await getTaskStateForClient(taskId) if (!task) { console.log(`[SocketServer] Task ${taskId} not found`) socket.emit('task:error', { taskId, error: 'Task not found' }) return } console.log(`[SocketServer] Task ${taskId} state: ${task.status}, progress: ${task.progress}`) // Send current state socket.emit('task:state', task) // Replay events if task is still running or pending if (task.status === 'running' || task.status === 'pending') { const events = await getTaskEvents(taskId) console.log(`[SocketServer] Replaying ${events.length} events for task ${taskId}`) for (const event of events) { socket.emit('task:event', { taskId, eventType: event.eventType, payload: event.payload, createdAt: event.createdAt, replayed: true, }) } } }) // Background Tasks: Unsubscribe from task updates socket.on('task:unsubscribe', (taskId: string) => { socket.leave(`task:${taskId}`) }) // Background Tasks: Cancel a running task socket.on('task:cancel', async (taskId: string) => { const { cancelTask } = await import('./lib/task-manager') const success = await cancelTask(taskId) if (success) { console.log(`[Socket] Task ${taskId} cancelled`) } else { socket.emit('task:error', { taskId, error: 'Cannot cancel task' }) } }) socket.on('disconnect', () => { // Track Socket.IO disconnection metrics socketConnections.dec() // Clean up co-play readiness on disconnect for (const [sessionId, { observerId }] of coPlayReadySessions) { console.log( `[CoPlay] Observer disconnected, removing readiness: session=${sessionId}, observer=${observerId}` ) socket.to(`session:${sessionId}`).emit('observer-coplay-leave', { sessionId, observerId }) } coPlayReadySessions.clear() // Handle remote camera cleanup on disconnect const remoteCameraSessionId = socket.data.remoteCameraSessionId as string | undefined if (remoteCameraSessionId) { // Fire-and-forget async cleanup (don't block disconnect handling) void markPhoneDisconnected(remoteCameraSessionId) io!.to(`remote-camera:${remoteCameraSessionId}`).emit('remote-camera:disconnected', { phoneConnected: false, }) console.log(`📱 Phone disconnected from remote camera session: ${remoteCameraSessionId}`) } // Don't delete session on disconnect - it persists across devices }) }) // Store in globalThis to make accessible across module boundaries globalThis.__socketIO = io // Initialize task manager for distributed operation import('./lib/task-manager') .then( ({ cleanupZombieTasks, registerTaskHooks, initCancellationSubscriber, initCancellationDbSync, }) => { // Initialize Redis subscriber for cross-pod cancellation initCancellationSubscriber() // Initialize DB sync fallback for cancellation initCancellationDbSync() // Register lifecycle hooks for monitoring registerTaskHooks({ onTaskCreated: (taskId, type) => { console.log(`[TaskManager] TASK_CREATED id=${taskId} type=${type}`) }, onTaskFailed: (taskId, type, error) => { console.error(`[TaskManager] TASK_FAILED id=${taskId} type=${type} error=${error}`) }, }) // Clean up zombie tasks (now pod-aware) cleanupZombieTasks() .then((count) => { if (count > 0) { console.log(`[TaskManager] Cleaned up ${count} zombie task(s)`) } }) .catch((err) => { console.error('[TaskManager] Failed to clean up zombie tasks:', err) }) } ) .catch((err) => { console.error('[TaskManager] Failed to import task-manager for initialization:', err) }) return io } |