feat: multi-WebSocket connection manager for instance federation
Refactor the WebSocket layer from a singleton connection to a connection map supporting N concurrent instances. Each connection has its own heartbeat worker, reconnect state, and token. Stores are now instance-aware: serverStore merges servers by origin, chatStore routes API calls through the correct client, and instanceStore triggers WS connect/disconnect on add/remove. DM, social, and voice events remain home-only.
This commit is contained in:
Jannis Braun
@@ -7,16 +7,23 @@ import { useSocialStore } from '../stores/socialStore';
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import { useSettingsStore } from '../stores/settingsStore';
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import type { ServerEvent, ClientEvent, ActiveCallInfo } from '@backspace/shared';
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let globalWs: WebSocket | null = null;
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let reconnectAttempts = 0;
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let reconnectTimer: ReturnType<typeof setTimeout> | undefined;
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let currentToken: string | null = null;
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let isInitialized = false;
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// ─── Connection state ─────────────────────────────────────────────────────────
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// Worker-based heartbeat: Safari throttles main-thread setInterval in
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// background tabs, causing ping timeouts. A Web Worker's timers run on a
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// separate thread and are not subject to the same throttling.
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let heartbeatWorker: Worker | null = null;
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interface ConnectionState {
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ws: WebSocket | null;
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heartbeatWorker: Worker | null;
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reconnectAttempts: number;
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reconnectTimer: ReturnType<typeof setTimeout> | undefined;
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token: string;
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}
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// '' = home instance, 'https://remote.example.com' = remote
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const connections = new Map<string, ConnectionState>();
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// Track whether the home connection has been initialized via the React hook
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let homeInitialized = false;
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// ─── Heartbeat (Web Worker) ───────────────────────────────────────────────────
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function createHeartbeatWorker(): Worker {
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const blob = new Blob([`
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@@ -33,26 +40,45 @@ function createHeartbeatWorker(): Worker {
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return new Worker(URL.createObjectURL(blob));
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}
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function startHeartbeat(ws: WebSocket): void {
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stopHeartbeat();
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heartbeatWorker = createHeartbeatWorker();
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heartbeatWorker.onmessage = () => {
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if (ws.readyState === WebSocket.OPEN) {
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ws.send(JSON.stringify({ type: 'ping' }));
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function startHeartbeat(conn: ConnectionState): void {
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stopHeartbeat(conn);
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conn.heartbeatWorker = createHeartbeatWorker();
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conn.heartbeatWorker.onmessage = () => {
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if (conn.ws && conn.ws.readyState === WebSocket.OPEN) {
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conn.ws.send(JSON.stringify({ type: 'ping' }));
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}
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};
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heartbeatWorker.postMessage('start');
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conn.heartbeatWorker.postMessage('start');
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}
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function stopHeartbeat(): void {
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if (heartbeatWorker) {
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heartbeatWorker.postMessage('stop');
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heartbeatWorker.terminate();
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heartbeatWorker = null;
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function stopHeartbeat(conn: ConnectionState): void {
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if (conn.heartbeatWorker) {
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conn.heartbeatWorker.postMessage('stop');
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conn.heartbeatWorker.terminate();
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conn.heartbeatWorker = null;
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}
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}
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function handleEvent(event: ServerEvent): void {
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// ─── WS URL construction ─────────────────────────────────────────────────────
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function buildWsUrl(origin: string): string {
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if (!origin) {
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// Home instance — derive from current page
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const protocol = window.location.protocol === 'https:' ? 'wss:' : 'ws:';
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return `${protocol}//${window.location.host}/ws`;
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}
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// Remote instance — derive from origin URL
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const url = new URL(origin);
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const protocol = url.protocol === 'https:' ? 'wss:' : 'ws:';
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return `${protocol}//${url.host}/ws`;
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}
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// ─── Event handling ───────────────────────────────────────────────────────────
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const HOME_ORIGIN = '';
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function handleEvent(origin: string, event: ServerEvent): void {
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const isHome = origin === HOME_ORIGIN;
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const { setUser } = useAuthStore.getState();
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const { populateFromReady, loadServerDetail, currentServerId, updateMemberPresence, addMember, removeMember, addDmChannel, removeDmChannel } = useServerStore.getState();
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const { addMessage, addRealtimeMessage, updateMessage, removeMessage, setTyping, onReactionAdded, onReactionRemoved } = useChatStore.getState();
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@@ -60,15 +86,20 @@ function handleEvent(event: ServerEvent): void {
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switch (event.type) {
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case 'ready':
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setUser(event.user);
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useSettingsStore.getState().setIsAdmin(event.user.isAdmin ?? false);
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useSettingsStore.getState().fetchStreamingLimits();
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populateFromReady(event.servers, event.folders, event.dmChannels);
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if (currentServerId) {
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if (isHome) {
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setUser(event.user);
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useSettingsStore.getState().setIsAdmin(event.user.isAdmin ?? false);
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useSettingsStore.getState().fetchStreamingLimits();
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}
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populateFromReady(origin, event.servers, event.folders, event.dmChannels);
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if (isHome && currentServerId) {
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loadServerDetail(currentServerId);
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}
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// Only force-reload the current channel on reconnect; other channels keep their cache
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{
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if (isHome) {
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const { loadMessages: reloadMessages, currentChannelId, setReadStates } = useChatStore.getState();
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if (currentChannelId) {
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reloadMessages(currentChannelId, true);
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@@ -79,8 +110,11 @@ function handleEvent(event: ServerEvent): void {
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setReadStates(event.readStates, channelLastMessageIds);
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}
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}
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// Clear stale voice state, then populate from server truth
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clearAllVoiceUsers();
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// Voice states — process for all origins (shows who's in voice on remote servers)
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if (isHome) {
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clearAllVoiceUsers();
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}
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if (event.voiceStates) {
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for (const [channelId, userIds] of Object.entries(event.voiceStates)) {
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setVoiceUsers(channelId, userIds);
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@@ -92,9 +126,9 @@ function handleEvent(event: ServerEvent): void {
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setVoiceUserStatus(uid, status.isMuted, status.isDeafened, status.isCameraOn, status.isScreenSharing);
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}
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}
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// Re-register in voice channel if we're still connected to LiveKit
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// (WebSocket reconnect causes server to drop our voice tracking)
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{
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// Re-register in voice channel if we're still connected to LiveKit (home only)
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if (isHome) {
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const { currentVoiceChannelId, isMuted: curMuted, isDeafened: curDeafened, isCameraOn: curCamera, isScreenSharing: curScreen } = useVoiceStore.getState();
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if (currentVoiceChannelId) {
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console.log('[WebSocket] Re-syncing voice status on reconnect:', { currentVoiceChannelId, curMuted, curDeafened, curCamera, curScreen });
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@@ -102,20 +136,18 @@ function handleEvent(event: ServerEvent): void {
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wsSend({ type: 'voice_status', isMuted: curMuted, isDeafened: curDeafened, isCameraOn: curCamera, isScreenSharing: curScreen });
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}
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}
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// Restore DM call state from server (handles reconnect and page refresh)
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{
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// Restore DM call state from server (home only)
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if (isHome) {
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const { activeDmCall, setActiveDmCall, setIncomingCall, incomingCall } = useVoiceStore.getState();
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const myId = event.user.id;
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if (event.activeCalls && event.activeCalls.length > 0) {
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for (const call of event.activeCalls) {
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const isParticipant = call.participants.includes(myId);
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if (call.state === 'active' && isParticipant) {
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// Restore active DM call
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setActiveDmCall({ dmChannelId: call.dmChannelId });
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break;
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} else if (call.state === 'ringing' && call.callerId !== myId) {
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// Restore incoming call (we're the callee)
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// Look up caller name from DM channel members
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const dmCh = event.dmChannels?.find((d: any) => d.id === call.dmChannelId);
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const callerUser = dmCh?.members?.find((m: any) => m.id === call.callerId);
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setIncomingCall({
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@@ -126,7 +158,6 @@ function handleEvent(event: ServerEvent): void {
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}
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}
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} else {
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// No active calls on server — clear stale local state
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if (activeDmCall) {
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setActiveDmCall(null);
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}
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@@ -161,7 +192,9 @@ function handleEvent(event: ServerEvent): void {
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case 'presence_update':
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updateMemberPresence(event.userId, event.status);
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useSocialStore.getState().updateFriendPresence(event.userId, event.status);
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if (isHome) {
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useSocialStore.getState().updateFriendPresence(event.userId, event.status);
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}
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break;
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case 'voice_state_update':
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@@ -184,13 +217,14 @@ function handleEvent(event: ServerEvent): void {
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removeMember(event.userId);
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break;
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// ─── DM events (home-only) ──────────────────────────────────────────────
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case 'dm_message_created': {
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if (!isHome) break;
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addRealtimeMessage(event.message.dmChannelId, event.message as any);
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// If DM channel is unknown (first-ever message safety net), add a minimal one
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const { dmChannels: currentDmChannels, setDmChannels: setDms, addDmChannel: addDmCh } = useServerStore.getState();
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const knownDm = currentDmChannels.find(dm => dm.id === event.message.dmChannelId);
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if (!knownDm) {
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// Construct a minimal DmChannel from the message so the sidebar shows it
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addDmCh({
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id: event.message.dmChannelId,
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createdAt: event.message.createdAt,
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@@ -198,13 +232,11 @@ function handleEvent(event: ServerEvent): void {
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lastMessage: event.message,
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});
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} else {
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// Update lastMessage on the DM channel so the sidebar sorts correctly
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const updatedDms = currentDmChannels.map(dm =>
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dm.id === event.message.dmChannelId
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? { ...dm, lastMessage: event.message }
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: dm
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);
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// Re-sort by most recent message
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updatedDms.sort((a, b) => {
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const aTime = a.lastMessage?.createdAt ?? a.createdAt;
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const bTime = b.lastMessage?.createdAt ?? b.createdAt;
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@@ -212,7 +244,6 @@ function handleEvent(event: ServerEvent): void {
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});
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setDms(updatedDms);
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}
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// Mark DM as unread if not currently viewing it
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{
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const { currentChannelId, markChannelUnread } = useChatStore.getState();
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if (event.message.dmChannelId !== currentChannelId) {
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@@ -223,17 +254,22 @@ function handleEvent(event: ServerEvent): void {
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}
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case 'dm_message_updated':
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if (!isHome) break;
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updateMessage(event.message as any);
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break;
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case 'dm_message_deleted':
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if (!isHome) break;
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removeMessage(event.messageId, event.dmChannelId);
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break;
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case 'dm_typing':
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if (!isHome) break;
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setTyping(event.dmChannelId, event.userId, event.username);
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break;
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// ─── Reactions (all origins) ────────────────────────────────────────────
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case 'reaction_added':
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onReactionAdded(event.messageId, event.reaction);
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break;
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@@ -242,25 +278,41 @@ function handleEvent(event: ServerEvent): void {
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onReactionRemoved(event.messageId, event.userId, event.emoji);
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break;
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// ─── Social events (home-only) ──────────────────────────────────────────
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case 'friend_request_received': {
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if (!isHome) break;
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const { addIncomingRequest } = useSocialStore.getState();
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addIncomingRequest(event.request);
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break;
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}
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case 'friend_request_accepted': {
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if (!isHome) break;
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const { addFriendFromAccepted } = useSocialStore.getState();
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addFriendFromAccepted(event.friend, event.requestId);
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break;
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}
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case 'friend_removed': {
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if (!isHome) break;
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const { removeFriendLocally } = useSocialStore.getState();
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removeFriendLocally(event.userId);
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break;
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}
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// ─── Channel ack (all origins) ──────────────────────────────────────────
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case 'channel_ack': {
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const { onChannelAck } = useChatStore.getState();
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onChannelAck(event.channelId, event.messageId);
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break;
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}
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// ─── DM call events (home-only) ─────────────────────────────────────────
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case 'dm_call_incoming': {
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if (!isHome) break;
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const { setIncomingCall } = useVoiceStore.getState();
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setIncomingCall({
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dmChannelId: event.dmChannelId,
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@@ -271,6 +323,7 @@ function handleEvent(event: ServerEvent): void {
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}
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case 'dm_call_accepted': {
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if (!isHome) break;
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const { setIncomingCall, setOutgoingCall, setActiveDmCall } = useVoiceStore.getState();
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setIncomingCall(null);
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setOutgoingCall(null);
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@@ -279,6 +332,7 @@ function handleEvent(event: ServerEvent): void {
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}
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case 'dm_call_rejected': {
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if (!isHome) break;
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const { setIncomingCall, setOutgoingCall, setActiveDmCall } = useVoiceStore.getState();
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setIncomingCall(null);
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setOutgoingCall(null);
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@@ -287,6 +341,7 @@ function handleEvent(event: ServerEvent): void {
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}
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case 'dm_call_ended': {
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if (!isHome) break;
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const { setIncomingCall, setOutgoingCall, setActiveDmCall } = useVoiceStore.getState();
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setIncomingCall(null);
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setOutgoingCall(null);
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@@ -294,42 +349,43 @@ function handleEvent(event: ServerEvent): void {
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break;
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}
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// ─── DM channel events (home-only) ──────────────────────────────────────
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case 'dm_channel_created':
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if (!isHome) break;
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addDmChannel(event.dmChannel);
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break;
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case 'dm_channel_closed':
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if (!isHome) break;
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removeDmChannel(event.dmChannelId);
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break;
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case 'dm_member_added': {
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if (!isHome) break;
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const { addDmMember } = useServerStore.getState();
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addDmMember(event.dmChannelId, event.user);
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break;
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}
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case 'dm_member_removed': {
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if (!isHome) break;
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const { removeDmMember } = useServerStore.getState();
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removeDmMember(event.dmChannelId, event.userId);
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break;
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}
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case 'friend_removed': {
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const { removeFriendLocally } = useSocialStore.getState();
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removeFriendLocally(event.userId);
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break;
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}
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// ─── Channel/server events (all origins) ────────────────────────────────
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case 'channel_created': {
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const { currentServerId: curServerId, channels: curChannels, setChannels, channelToServerMap, channelPermissions } = useServerStore.getState();
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const { currentServerId: curServerId, channels: curChannels, setChannels, channelToServerMap, channelPermissions, channelOriginMap } = useServerStore.getState();
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if (event.serverId === curServerId) {
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// Deduplicate: only add if not already present
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if (!curChannels.find(c => c.id === event.channel.id)) {
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setChannels([...curChannels, event.channel].sort((a, b) => a.position - b.position));
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}
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}
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// Update auxiliary maps
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channelToServerMap.set(event.channel.id, event.serverId);
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channelOriginMap.set(event.channel.id, origin);
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if (event.channel.myPermissions) {
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channelPermissions.set(event.channel.id, event.channel.myPermissions);
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}
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@@ -341,17 +397,14 @@ function handleEvent(event: ServerEvent): void {
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if (event.serverId === curServerId2) {
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const exists = curChannels2.some(c => c.id === event.channel.id);
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if (exists) {
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// Replace existing channel data
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setChannels2(curChannels2.map(c => c.id === event.channel.id ? event.channel : c).sort((a, b) => a.position - b.position));
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} else {
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// Upsert: user just gained access to this channel
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setChannels2([...curChannels2, event.channel].sort((a, b) => a.position - b.position));
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// Populate channelToServerMap for the new channel
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const { channelToServerMap: ctsMmap } = useServerStore.getState();
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const { channelToServerMap: ctsMmap, channelOriginMap: coMap } = useServerStore.getState();
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ctsMmap.set(event.channel.id, event.serverId);
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coMap.set(event.channel.id, origin);
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}
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}
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// Sync channelPermissions with the server's computed value
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if (event.channel.myPermissions) {
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chPermsMap2.set(event.channel.id, event.channel.myPermissions);
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}
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@@ -359,18 +412,16 @@ function handleEvent(event: ServerEvent): void {
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}
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case 'channel_deleted': {
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const { currentServerId: curServerId3, channels: curChannels3, setChannels: setChannels3, channelPermissions: chPermsMap3, channelToServerMap: ctsMap3 } = useServerStore.getState();
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const { currentServerId: curServerId3, channels: curChannels3, setChannels: setChannels3, channelPermissions: chPermsMap3, channelToServerMap: ctsMap3, channelOriginMap: coMap3 } = useServerStore.getState();
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if (event.serverId === curServerId3) {
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setChannels3(curChannels3.filter(c => c.id !== event.channelId));
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}
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// Clean up auxiliary maps
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chPermsMap3.delete(event.channelId);
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ctsMap3.delete(event.channelId);
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// If the user is currently viewing this channel, navigate away
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coMap3.delete(event.channelId);
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{
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const { currentChannelId } = useChatStore.getState();
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if (currentChannelId === event.channelId) {
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// Find the first remaining text channel to navigate to
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const { channels: remainingChannels } = useServerStore.getState();
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const firstText = remainingChannels.find(c => c.type === 'text');
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if (firstText) {
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@@ -390,50 +441,67 @@ function handleEvent(event: ServerEvent): void {
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}
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case 'pong':
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// Heartbeat response — no action needed
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break;
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case 'error':
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console.error('WebSocket error:', event.message);
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console.error(`WebSocket error (${origin || 'home'}):`, event.message);
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break;
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}
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}
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function connect(): void {
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if (!currentToken) return;
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if (globalWs && (globalWs.readyState === WebSocket.OPEN || globalWs.readyState === WebSocket.CONNECTING)) {
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||||
// ─── Connection management ────────────────────────────────────────────────────
|
||||
|
||||
function getOrCreateConnection(origin: string, token: string): ConnectionState {
|
||||
let conn = connections.get(origin);
|
||||
if (!conn) {
|
||||
conn = {
|
||||
ws: null,
|
||||
heartbeatWorker: null,
|
||||
reconnectAttempts: 0,
|
||||
reconnectTimer: undefined,
|
||||
token,
|
||||
};
|
||||
connections.set(origin, conn);
|
||||
} else {
|
||||
conn.token = token;
|
||||
}
|
||||
return conn;
|
||||
}
|
||||
|
||||
function connectToOrigin(origin: string, token: string): void {
|
||||
const conn = getOrCreateConnection(origin, token);
|
||||
|
||||
if (conn.ws && (conn.ws.readyState === WebSocket.OPEN || conn.ws.readyState === WebSocket.CONNECTING)) {
|
||||
return;
|
||||
}
|
||||
|
||||
const protocol = window.location.protocol === 'https:' ? 'wss:' : 'ws:';
|
||||
const wsUrl = `${protocol}//${window.location.host}/ws`;
|
||||
const wsUrl = buildWsUrl(origin);
|
||||
const ws = new WebSocket(wsUrl);
|
||||
globalWs = ws;
|
||||
conn.ws = ws;
|
||||
|
||||
ws.onopen = () => {
|
||||
reconnectAttempts = 0;
|
||||
ws.send(JSON.stringify({ type: 'auth', token: currentToken }));
|
||||
|
||||
// Start heartbeat via Web Worker (immune to Safari background throttling)
|
||||
startHeartbeat(ws);
|
||||
conn.reconnectAttempts = 0;
|
||||
ws.send(JSON.stringify({ type: 'auth', token: conn.token }));
|
||||
startHeartbeat(conn);
|
||||
};
|
||||
|
||||
ws.onmessage = (e) => {
|
||||
try {
|
||||
const event = JSON.parse(e.data as string) as ServerEvent;
|
||||
handleEvent(event);
|
||||
handleEvent(origin, event);
|
||||
} catch {
|
||||
console.error('Failed to parse WebSocket message');
|
||||
console.error(`Failed to parse WebSocket message (${origin || 'home'})`);
|
||||
}
|
||||
};
|
||||
|
||||
ws.onclose = () => {
|
||||
globalWs = null;
|
||||
stopHeartbeat();
|
||||
if (currentToken) {
|
||||
const delay = Math.min(1000 * Math.pow(2, reconnectAttempts), 30000);
|
||||
reconnectAttempts++;
|
||||
reconnectTimer = setTimeout(connect, delay);
|
||||
conn.ws = null;
|
||||
stopHeartbeat(conn);
|
||||
// Only reconnect if the connection is still registered (not explicitly disconnected)
|
||||
if (connections.has(origin) && conn.token) {
|
||||
const delay = Math.min(1000 * Math.pow(2, conn.reconnectAttempts), 30000);
|
||||
conn.reconnectAttempts++;
|
||||
conn.reconnectTimer = setTimeout(() => connectToOrigin(origin, conn.token), delay);
|
||||
}
|
||||
};
|
||||
|
||||
@@ -442,31 +510,61 @@ function connect(): void {
|
||||
};
|
||||
}
|
||||
|
||||
function disconnect(): void {
|
||||
currentToken = null;
|
||||
isInitialized = false;
|
||||
if (reconnectTimer) {
|
||||
clearTimeout(reconnectTimer);
|
||||
reconnectTimer = undefined;
|
||||
function disconnectFromOrigin(origin: string): void {
|
||||
const conn = connections.get(origin);
|
||||
if (!conn) return;
|
||||
|
||||
// Clear token to prevent reconnect
|
||||
conn.token = '';
|
||||
|
||||
if (conn.reconnectTimer) {
|
||||
clearTimeout(conn.reconnectTimer);
|
||||
conn.reconnectTimer = undefined;
|
||||
}
|
||||
stopHeartbeat();
|
||||
if (globalWs) {
|
||||
globalWs.close();
|
||||
globalWs = null;
|
||||
stopHeartbeat(conn);
|
||||
if (conn.ws) {
|
||||
conn.ws.close();
|
||||
conn.ws = null;
|
||||
}
|
||||
connections.delete(origin);
|
||||
}
|
||||
|
||||
// ─── Public API ───────────────────────────────────────────────────────────────
|
||||
|
||||
/** Connect to a remote instance's WebSocket. Called by instanceStore. */
|
||||
export function connectInstance(origin: string, token: string): void {
|
||||
connectToOrigin(origin, token);
|
||||
}
|
||||
|
||||
/** Disconnect from a remote instance's WebSocket. Called by instanceStore. */
|
||||
export function disconnectInstance(origin: string): void {
|
||||
disconnectFromOrigin(origin);
|
||||
}
|
||||
|
||||
/** Disconnect all remote (non-home) WebSocket connections. Called on logout. */
|
||||
export function disconnectAllRemote(): void {
|
||||
for (const origin of [...connections.keys()]) {
|
||||
if (origin !== HOME_ORIGIN) {
|
||||
disconnectFromOrigin(origin);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/** Send an event over the WebSocket. Can be used outside of React components. */
|
||||
export function wsSend(event: ClientEvent): void {
|
||||
if (globalWs && globalWs.readyState === WebSocket.OPEN) {
|
||||
globalWs.send(JSON.stringify(event));
|
||||
export function wsSend(event: ClientEvent, origin: string = HOME_ORIGIN): void {
|
||||
const conn = connections.get(origin);
|
||||
if (conn?.ws && conn.ws.readyState === WebSocket.OPEN) {
|
||||
conn.ws.send(JSON.stringify(event));
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Hook to initialize the WebSocket connection. Should only be called ONCE
|
||||
* Hook to initialize the home WebSocket connection. Should only be called ONCE
|
||||
* from the top-level layout component (AppLayout). Other components should
|
||||
* use the exported `wsSend` function directly.
|
||||
*
|
||||
* Remote instance connections are managed by instanceStore via
|
||||
* connectInstance/disconnectInstance — not by this hook.
|
||||
*/
|
||||
export function useWebSocket() {
|
||||
const token = useAuthStore((s) => s.token);
|
||||
@@ -474,23 +572,25 @@ export function useWebSocket() {
|
||||
const [isConnected, setIsConnected] = React.useState(false);
|
||||
|
||||
useEffect(() => {
|
||||
if (token && (!isInitialized || token !== prevToken.current)) {
|
||||
currentToken = token;
|
||||
isInitialized = true;
|
||||
connect();
|
||||
} else if (!token && isInitialized) {
|
||||
disconnect();
|
||||
if (token && (!homeInitialized || token !== prevToken.current)) {
|
||||
homeInitialized = true;
|
||||
connectToOrigin(HOME_ORIGIN, token);
|
||||
} else if (!token && homeInitialized) {
|
||||
homeInitialized = false;
|
||||
disconnectFromOrigin(HOME_ORIGIN);
|
||||
}
|
||||
prevToken.current = token;
|
||||
}, [token]);
|
||||
|
||||
useEffect(() => {
|
||||
const checkStatus = setInterval(() => {
|
||||
setIsConnected(!!globalWs && globalWs.readyState === WebSocket.OPEN);
|
||||
const conn = connections.get(HOME_ORIGIN);
|
||||
setIsConnected(!!conn?.ws && conn.ws.readyState === WebSocket.OPEN);
|
||||
}, 500);
|
||||
return () => {
|
||||
clearInterval(checkStatus);
|
||||
disconnect();
|
||||
homeInitialized = false;
|
||||
disconnectFromOrigin(HOME_ORIGIN);
|
||||
};
|
||||
}, []);
|
||||
|
||||
|
||||
Reference in New Issue
Block a user