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feat(frontend): dev mock-join fallback when LiveKit unconfigured

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If the backend returns the placeholder LiveKit URL, skip the real connect and
screen capture and drop into the post-join state (with a DEV MODE banner) so
the connected UI is developable without LiveKit creds or HTTPS. Real joins
also guard getDisplayMedia behind isSecureContext.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
This commit is contained in:
Kartikeya
2026-06-27 14:56:04 -07:00
parent 6bf359f4d4
commit fc3752bbe9
2 changed files with 45 additions and 13 deletions
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frontend/src/lib/pod.ts
+29 -10
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@@ -2,7 +2,7 @@ import { Room, RoomEvent } from 'livekit-client';
const BACKEND_URL = import.meta.env.VITE_BACKEND_URL || 'http://localhost:8787';
/** Ask the backend for a LiveKit token to join a pod. */
/** Token + LiveKit URL minted by the backend. */
export async function fetchPodToken(
podId: string,
identity: string,
@@ -17,22 +17,41 @@ export async function fetchPodToken(
return res.json();
}
/** True once a real LiveKit server is configured (not the placeholder). */
export function isLiveKitConfigured(url: string | undefined): boolean {
return !!url && !url.includes('REPLACE_ME');
}
export type JoinResult = { mode: 'live'; room: Room } | { mode: 'dev'; room: null };
/**
* Join a pod: connect to the LiveKit room and publish screen + mic so PodMan
* can watch. Returns the connected Room.
* Join a pod. When LiveKit is configured we connect for real and publish
* screen + mic. Otherwise we fall back to a dev mock join so the post-join UI
* is developable without LiveKit creds / HTTPS.
*/
export async function joinPod(podId: string, identity: string, name: string): Promise<Room> {
export async function joinPod(podId: string, identity: string, name: string): Promise<JoinResult> {
const { token, url } = await fetchPodToken(podId, identity, name);
if (!isLiveKitConfigured(url)) {
console.warn('[podman] LiveKit not configured — dev mock join (no screen capture)');
return { mode: 'dev', room: null };
}
const room = new Room({ adaptiveStream: true, dynacast: true });
room.on(RoomEvent.Disconnected, () => console.log('[podman] disconnected'));
await room.connect(url, token);
const screen = await navigator.mediaDevices.getDisplayMedia({ video: true });
for (const track of screen.getTracks()) {
await room.localParticipant.publishTrack(track);
// Screen capture needs a secure context (HTTPS or localhost). Guard so a
// non-secure origin doesn't hard-crash the join.
if (window.isSecureContext && navigator.mediaDevices?.getDisplayMedia) {
const screen = await navigator.mediaDevices.getDisplayMedia({ video: true });
for (const track of screen.getTracks()) {
await room.localParticipant.publishTrack(track);
}
await room.localParticipant.setMicrophoneEnabled(true);
} else {
console.warn('[podman] insecure context — screen capture skipped (needs HTTPS)');
}
await room.localParticipant.setMicrophoneEnabled(true);
return room;
return { mode: 'live', room };
}