Resilient prepare, Twitch chat echo, parallel chat startup

- Prepare endpoint wraps each destination in try/catch; partial success
  if at least one destination is ready (e.g., Twitch works when YouTube
  is rate-limited)
- Echo sent Twitch messages back to app WebSocket (IRC doesn't echo
  your own PRIVMSGs)
- Start YouTube and Twitch chat clients in parallel via Promise.allSettled
- Fix Twitch auth failure detection (Login unsuccessful + Login
  authentication failed)
- Add Twitch IRC debug logging

src/routes/streams/lifecycle.ts

@@ -114,6 +114,7 @@ const lifecycleRoutes: FastifyPluginAsync = async (fastify) => {
     }
 
     const prepared: PreparedDestination[] = [];
+    const errors: string[] = [];
 
     for (const dest of plan.destinations) {
       // CUSTOM destinations are already READY with rtmpUrl/streamKey set at creation
@@ -134,71 +135,81 @@ const lifecycleRoutes: FastifyPluginAsync = async (fastify) => {
         continue;
       }
 
-      const { account, accessToken } = await getDecryptedTokenByAccountId(
-        fastify.prisma,
-        request.userId,
-        dest.linkedAccountId,
-      );
-
-      if (dest.serviceId === 'YOUTUBE') {
-        const broadcast = await createYouTubeBroadcast(
-          accessToken,
-          dest.title,
-          dest.description,
-          dest.privacyStatus,
+      try {
+        const { account, accessToken } = await getDecryptedTokenByAccountId(
+          fastify.prisma,
+          request.userId,
+          dest.linkedAccountId,
         );
 
-        await fastify.prisma.streamDestination.update({
-          where: { id: dest.id },
-          data: {
+        if (dest.serviceId === 'YOUTUBE') {
+          const broadcast = await createYouTubeBroadcast(
+            accessToken,
+            dest.title,
+            dest.description,
+            dest.privacyStatus,
+          );
+
+          await fastify.prisma.streamDestination.update({
+            where: { id: dest.id },
+            data: {
+              rtmpUrl: broadcast.rtmpUrl,
+              streamKey: broadcast.streamKey,
+              broadcastId: broadcast.id,
+              status: 'READY',
+            },
+          });
+
+          prepared.push({
+            id: dest.id,
+            serviceId: 'YOUTUBE',
             rtmpUrl: broadcast.rtmpUrl,
             streamKey: broadcast.streamKey,
             broadcastId: broadcast.id,
-            status: 'READY',
-          },
-        });
+          });
+        } else if (dest.serviceId === 'TWITCH') {
+          // Update channel info
+          const tags = dest.tags ? dest.tags.split(',').map((t) => t.trim()).filter(Boolean) : [];
+          await updateTwitchChannel(
+            accessToken,
+            account.accountId,
+            dest.title,
+            dest.gameId,
+            tags,
+          );
 
-        prepared.push({
-          id: dest.id,
-          serviceId: 'YOUTUBE',
-          rtmpUrl: broadcast.rtmpUrl,
-          streamKey: broadcast.streamKey,
-          broadcastId: broadcast.id,
-        });
-      } else if (dest.serviceId === 'TWITCH') {
-        // Update channel info
-        const tags = dest.tags ? dest.tags.split(',').map((t) => t.trim()).filter(Boolean) : [];
-        await updateTwitchChannel(
-          accessToken,
-          account.accountId,
-          dest.title,
-          dest.gameId,
-          tags,
-        );
+          // Get stream key
+          const streamKey = await getTwitchStreamKey(accessToken, account.accountId);
 
-        // Get stream key
-        const streamKey = await getTwitchStreamKey(accessToken, account.accountId);
+          await fastify.prisma.streamDestination.update({
+            where: { id: dest.id },
+            data: {
+              rtmpUrl: TWITCH_RTMP_URL,
+              streamKey,
+              broadcastId: account.accountId,
+              status: 'READY',
+            },
+          });
 
-        await fastify.prisma.streamDestination.update({
-          where: { id: dest.id },
-          data: {
+          prepared.push({
+            id: dest.id,
+            serviceId: 'TWITCH',
             rtmpUrl: TWITCH_RTMP_URL,
             streamKey,
             broadcastId: account.accountId,
-            status: 'READY',
-          },
-        });
-
-        prepared.push({
-          id: dest.id,
-          serviceId: 'TWITCH',
-          rtmpUrl: TWITCH_RTMP_URL,
-          streamKey,
-          broadcastId: account.accountId,
-        });
+          });
+        }
+      } catch (err: any) {
+        request.log.error({ err, destId: dest.id, service: dest.serviceId }, `Failed to prepare ${dest.serviceId} destination`);
+        errors.push(`${dest.serviceId}: ${err.message}`);
       }
     }
 
+    // At least one destination must be ready
+    if (prepared.length === 0) {
+      throw new AppError(500, `All destinations failed to prepare: ${errors.join('; ')}`);
+    }
+
     await fastify.prisma.streamPlan.update({
       where: { id: plan.id },
       data: { status: 'READY' },

src/services/chat-manager.service.ts

@@ -111,13 +111,15 @@ export class ChatManager {
 
     this.sessions.set(sessionKey, session);
 
+    const chatPromises: Promise<void>[] = [];
     for (const dest of plan.destinations) {
       if (dest.serviceId === 'YOUTUBE' && dest.linkedAccountId) {
-        await this.startYouTubeChat(session, dest);
+        chatPromises.push(this.startYouTubeChat(session, dest));
       } else if (dest.serviceId === 'TWITCH' && dest.linkedAccountId) {
-        await this.startTwitchChat(session, dest);
+        chatPromises.push(this.startTwitchChat(session, dest));
       }
     }
+    await Promise.allSettled(chatPromises);
   }
 
   async handleSendMessage(
@@ -146,9 +148,42 @@ export class ChatManager {
     const twitchClient = session.twitchClients.get(destinationId);
     if (twitchClient) {
       twitchClient.sendMessage(text);
+      // Echo sent message back to app (Twitch IRC doesn't echo your own PRIVMSGs)
+      try {
+        const { account } = await getDecryptedToken(this.prisma, userId, destinationId);
+        this.sendEcho(session, 'TWITCH', destinationId, account.displayName, text);
+      } catch {
+        // Still echo with fallback name
+        this.sendEcho(session, 'TWITCH', destinationId, 'You', text);
+      }
     }
   }
 
+  private sendEcho(
+    session: ChatSession,
+    service: string,
+    destinationId: string,
+    authorName: string,
+    text: string,
+  ): void {
+    this.sendToSocket(session.socket, {
+      type: 'chat_message',
+      planId: session.planId,
+      service,
+      destinationId,
+      message: {
+        id: `echo-${Date.now()}-${Math.random().toString(36).substring(2, 8)}`,
+        authorName,
+        authorImageUrl: null,
+        text,
+        timestamp: Date.now(),
+        isModerator: false,
+        isBroadcaster: true,
+        color: null,
+      },
+    });
+  }
+
   async stopChat(planId: string, userId: string): Promise<void> {
     const sessionKey = `${userId}:${planId}`;
     const session = this.sessions.get(sessionKey);
@@ -345,6 +380,7 @@ export class ChatManager {
   }
 
   private async startTwitchChat(session: ChatSession, dest: any): Promise<void> {
+    this.logger.info({ planId: session.planId, destId: dest.linkedAccountId }, 'startTwitchChat called');
     try {
       const { account, accessToken } = await getDecryptedToken(
         this.prisma,

src/services/twitch-chat.service.ts

@@ -33,6 +33,7 @@ export class TwitchChatClient extends EventEmitter {
     this.ws = new WebSocket('wss://irc-ws.chat.twitch.tv:443');
 
     this.ws.on('open', () => {
+      console.log(`[Twitch-IRC] WebSocket open for #${this.channel}`);
       if (!this.ws) return;
       // Request capabilities
       this.ws.send('CAP REQ :twitch.tv/tags twitch.tv/commands');
@@ -45,19 +46,22 @@ export class TwitchChatClient extends EventEmitter {
 
     this.ws.on('message', (data: Buffer) => {
       const raw = data.toString();
+      console.log(`[Twitch-IRC] #${this.channel} << ${raw.trim().substring(0, 200)}`);
       const lines = raw.split('\r\n').filter(Boolean);
       for (const line of lines) {
         this.handleLine(line);
       }
     });
 
-    this.ws.on('close', () => {
+    this.ws.on('close', (code: number, reason: Buffer) => {
+      console.log(`[Twitch-IRC] #${this.channel} closed: ${code} ${reason.toString()}`);
       this.connected = false;
       this.cleanup();
       this.emit('disconnected');
     });
 
     this.ws.on('error', (err: Error) => {
+      console.log(`[Twitch-IRC] #${this.channel} error: ${err.message}`);
       this.emit('error', err);
     });
 
@@ -106,8 +110,8 @@ export class TwitchChatClient extends EventEmitter {
     }
 
     // Handle auth failure
-    if (line.includes('NOTICE') && line.includes('Login authentication failed')) {
-      this.emit('error', new Error('missing_scopes'));
+    if (line.includes('NOTICE') && (line.includes('Login unsuccessful') || line.includes('Login authentication failed'))) {
+      this.emit('error', new Error('Twitch login failed — token may be expired or missing chat scopes'));
       this.disconnect();
       return;
     }