Address PR comments on RoomForm

src/lib/livekit.ts

@@ -0,0 +1,21 @@
+const livekitEndpoint = (url: string, groupId: string) => {
+  const httpUrl = url
+    .replace(/^wss:\/\//, "https://")
+    .replace(/^ws:\/\//, "http://")
+    .replace(/\/$/, "")
+  return `${httpUrl}/.well-known/nip29/livekit/${groupId}`
+}
+
+export const checkRelayHasLivekit = async (url: string): Promise<boolean> => {
+  const endpoint = livekitEndpoint(url, "nop")
+
+  try {
+    // Zooid returns 401 when livekit is configured and 404 if it is not.
+    const response = await fetch(endpoint)
+    return response.status === 401
+  } catch {
+    return false
+  }
+}
+
+export const getLivekitEndpoint = (url: string, groupId: string) => livekitEndpoint(url, groupId)