Make devices depend on session

Author: pblazej

VoiceAgent/Devices/DeviceSwitcher.swift

@@ -42,6 +42,10 @@ final class DeviceSwitcher: ObservableObject {
         observeDevices()
     }
 
+    convenience init(agentSession: AgentSession) {
+        self.init(room: agentSession._room)
+    }
+
     private func observeRoom() {
         Task { [weak self] in
             guard let changes = self?.room.changes else { return }

VoiceAgent/VoiceAgentApp.swift

@@ -6,14 +6,15 @@ struct VoiceAgentApp: App {
     // To use the LiveKit Cloud sandbox (development only)
     // - Enable your sandbox here https://cloud.livekit.io/projects/p_/sandbox/templates/token-server
     // - Create .env.xcconfig with your LIVEKIT_SANDBOX_ID
-    private let sandboxID = Bundle.main.object(forInfoDictionaryKey: "LiveKitSandboxId") as! String
-    private let room = Room(roomOptions: RoomOptions(defaultScreenShareCaptureOptions: ScreenShareCaptureOptions(useBroadcastExtension: true)))
+    private static let sandboxId = Bundle.main.object(forInfoDictionaryKey: "LiveKitSandboxId") as! String
+    private let session = AgentSession(credentials: Sandbox(id: Self.sandboxId),
+                                       room: Room(roomOptions: RoomOptions(defaultScreenShareCaptureOptions: ScreenShareCaptureOptions(useBroadcastExtension: true))))
 
     var body: some Scene {
         WindowGroup {
             AppView()
-                .environmentObject(DeviceSwitcher(room: room))
-                .environmentObject(AgentSession(credentials: Sandbox(id: sandboxID), room: room))
+                .environmentObject(session)
+                .environmentObject(DeviceSwitcher(agentSession: session))
         }
         #if os(macOS)
         .defaultSize(width: 900, height: 900)