Changes

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

src/lib/webrtc/signaling.ts

@@ -0,0 +1,40 @@
+import { supabase } from '@/integrations/supabase/client';
+import type { RealtimeChannel } from '@supabase/supabase-js';
+
+export type SignalMessage =
+  | { type: 'viewer-join'; viewerId: string }
+  | { type: 'viewer-leave'; viewerId: string }
+  | { type: 'offer'; viewerId: string; sdp: RTCSessionDescriptionInit }
+  | { type: 'answer'; viewerId: string; sdp: RTCSessionDescriptionInit }
+  | { type: 'ice'; viewerId: string; from: 'broadcaster' | 'viewer'; candidate: RTCIceCandidateInit };
+
+export function joinSignalingChannel(
+  code: string,
+  onMessage: (msg: SignalMessage) => void,
+): RealtimeChannel {
+  const channel = supabase.channel(`share:${code}`, {
+    config: { broadcast: { self: false, ack: false } },
+  });
+
+  channel
+    .on('broadcast', { event: 'signal' }, ({ payload }) => onMessage(payload as SignalMessage))
+    .subscribe();
+
+  return channel;
+}
+
+export function sendSignal(channel: RealtimeChannel, msg: SignalMessage) {
+  return channel.send({ type: 'broadcast', event: 'signal', payload: msg });
+}
+
+export function generateRoomCode(): string {
+  const chars = 'ABCDEFGHJKLMNPQRSTUVWXYZ23456789'; // unambiguous
+  let out = '';
+  for (let i = 0; i < 6; i++) out += chars[Math.floor(Math.random() * chars.length)];
+  return out;
+}
+
+export const ICE_SERVERS: RTCIceServer[] = [
+  { urls: 'stun:stun.l.google.com:19302' },
+  { urls: 'stun:stun1.l.google.com:19302' },
+];