Changes

Co-authored-by: Reifonas <211114984+Reifonas@users.noreply.github.com>

src/lib/webrtc/viewer.ts

@@ -1,6 +1,7 @@
 import {
   joinSignalingChannel,
   sendSignal,
+  waitForSignalingReady,
   ICE_SERVERS,
   type SignalMessage,
 } from './signaling';
@@ -17,6 +18,7 @@ export async function joinAsViewer(
   code: string,
   videoEl: HTMLVideoElement,
   onState: (s: 'connecting' | 'waiting' | 'live' | 'error', detail?: string) => void,
+  onFallbackFrame?: (dataUrl: string) => void,
 ): Promise<ViewerHandle> {
   const viewerId = crypto.randomUUID();
   let pc: RTCPeerConnection | null = null;
@@ -25,18 +27,24 @@ export async function joinAsViewer(
   onState('connecting');
 
   const handleMessage = async (msg: SignalMessage) => {
+    if (msg.type === 'frame') {
+      onFallbackFrame?.(msg.dataUrl);
+      onState('live');
+      return;
+    }
+
     if (msg.type === 'offer' && msg.viewerId === viewerId) {
       pc = new RTCPeerConnection({ iceServers: ICE_SERVERS });
 
       pc.ontrack = (ev) => {
-        videoEl.srcObject = ev.streams[0];
+        videoEl.srcObject = ev.streams[0] ?? new MediaStream([ev.track]);
         videoEl.play().catch(() => {/* autoplay may need user gesture */});
         onState('live');
       };
 
       pc.onicecandidate = (ev) => {
         if (ev.candidate && channel) {
-          sendSignal(channel, {
+          void sendSignal(channel, {
             type: 'ice',
             viewerId,
             from: 'viewer',
@@ -54,7 +62,7 @@ export async function joinAsViewer(
       await pc.setRemoteDescription(msg.sdp);
       const answer = await pc.createAnswer();
       await pc.setLocalDescription(answer);
-      if (channel) sendSignal(channel, { type: 'answer', viewerId, sdp: answer });
+      if (channel) await sendSignal(channel, { type: 'answer', viewerId, sdp: answer });
     } else if (msg.type === 'ice' && msg.viewerId === viewerId && msg.from === 'broadcaster') {
       if (pc) {
         try {
@@ -67,18 +75,14 @@ export async function joinAsViewer(
   };
 
   channel = joinSignalingChannel(code, handleMessage);
+  await waitForSignalingReady(channel);
 
-  // Wait a tick for subscribe, then announce join
+  await sendSignal(channel, { type: 'viewer-join', viewerId });
-  setTimeout(() => {
+  onState('waiting');
-    if (channel) {
-      sendSignal(channel, { type: 'viewer-join', viewerId });
-      onState('waiting');
-    }
-  }, 600);
 
   const stop = async () => {
     if (channel) {
-      try { sendSignal(channel, { type: 'viewer-leave', viewerId }); } catch {}
+      try { await sendSignal(channel, { type: 'viewer-leave', viewerId }); } catch {}
       const { supabase } = await import('@/integrations/supabase/client');
       await supabase.removeChannel(channel);
     }