➕ Add livekit

lib/screens/chat/call_room.dart

@@ -14,114 +14,7 @@ class CallRoomScreen extends StatefulWidget {
   State<CallRoomScreen> createState() => _CallRoomScreenState();
 }
 
-const _kLocalWebRtcBaseUrl = 'http://localhost:8001';
-
 class _CallRoomScreenState extends State<CallRoomScreen> {
-  RTCPeerConnection? _peerConnection;
-  MediaStream? _localStream;
-  WebSocketChannel? _wsChannel;
-
-  @override
-  void initState() {
-    super.initState();
-    _initWebRtc();
-  }
-
-  Future<void> _initWebRtc() async {
-    final client = Dio();
-    client.options.baseUrl = _kLocalWebRtcBaseUrl;
-
-    final configResp = await client.get('/.well-known/webrtc');
-
-    // Get user media (audio only)
-    _localStream = await navigator.mediaDevices.getUserMedia({
-      'audio': true,
-      'video': false,
-    });
-
-    // Configure Peer Connection
-    Map<String, dynamic> config = {
-      'iceServers': configResp.data['ice_servers']
-    };
-
-    _peerConnection = await createPeerConnection(config);
-
-    // Add local stream to peer connection
-    _peerConnection?.addStream(_localStream!);
-
-    // Listen for ICE candidates
-    _peerConnection?.onIceCandidate = (RTCIceCandidate candidate) {
-      print('New ICE candidate: ${candidate.candidate}');
-      // Send the candidate to the signaling server
-    };
-
-    // Handle remote stream
-    _peerConnection?.onAddStream = (MediaStream stream) {
-      print('Remote stream added');
-      // Play the remote stream
-    };
-
-    _wsChannel = WebSocketChannel.connect(
-      Uri.parse('$_kLocalWebRtcBaseUrl/webrtc'),
-    );
-    await _wsChannel!.ready;
-
-    _wsChannel!.stream.listen((event) {
-      final Map<String, dynamic> data = jsonDecode(event);
-
-      switch (data['type']) {
-        case 'offer':
-          _handleOffer(data);
-          break;
-        case 'answer':
-          _handleAnswer(data);
-          break;
-        case 'candidate':
-          _handleCandidate(data);
-          break;
-      }
-    });
-  }
-
-  Future<void> _handleOffer(Map<String, dynamic> data) async {
-    // Set remote description
-    final offer = RTCSessionDescription(data['sdp'], data['type']);
-    await _peerConnection?.setRemoteDescription(offer);
-
-    // Create and send answer
-    final answer = await _peerConnection?.createAnswer();
-    await _peerConnection?.setLocalDescription(answer!);
-
-    _wsChannel?.sink.add({
-      'type': 'answer',
-      'sdp': answer?.sdp,
-    });
-  }
-
-  Future<void> _handleAnswer(Map<String, dynamic> data) async {
-    // Set remote description
-    final answer = RTCSessionDescription(data['sdp'], data['type']);
-    await _peerConnection?.setRemoteDescription(answer);
-  }
-
-  Future<void> _handleCandidate(Map<String, dynamic> data) async {
-    // Add ICE candidate
-    final candidate = RTCIceCandidate(
-      data['candidate'],
-      data['sdpMid'],
-      data['sdpMLineIndex'],
-    );
-    await _peerConnection?.addCandidate(candidate);
-  }
-
-  @override
-  void dispose() {
-    _wsChannel?.sink.close();
-    _localStream?.dispose();
-    _peerConnection?.close();
-    super.dispose();
-  }
-
   @override
   Widget build(BuildContext context) {
     return Scaffold(