Adds Apple airplay/Google cast support to the app

2026-05-14 22:02:37 -07:00
parent 3bb2630e1a
commit c9ef69c8b5
10 changed files with 979 additions and 17 deletions
@@ -0,0 +1,211 @@
+import 'dart:async';
+
+import 'package:flutter/foundation.dart';
+import 'package:flutter/services.dart';
+
+enum CastingStatus { unavailable, idle, connecting, connected, error }
+
+enum CastingPlaybackStatus { unknown, stopped, buffering, playing }
+
+class CastingBusinessObject extends ChangeNotifier {
+  static const MethodChannel _methodChannel = MethodChannel(
+    'kryz_go_flutter/casting/methods',
+  );
+  static const EventChannel _eventChannel = EventChannel(
+    'kryz_go_flutter/casting/events',
+  );
+
+  StreamSubscription<dynamic>? _eventSubscription;
+  CastingStatus _status = CastingStatus.unavailable;
+  CastingPlaybackStatus _playbackStatus = CastingPlaybackStatus.unknown;
+  String? _connectedDeviceName;
+  String? _lastError;
+
+  CastingStatus get status => _status;
+  CastingPlaybackStatus get playbackStatus => _playbackStatus;
+  String? get connectedDeviceName => _connectedDeviceName;
+  String? get lastError => _lastError;
+
+  bool get isSupportedOnThisPlatform {
+    if (kIsWeb) {
+      return false;
+    }
+
+    return defaultTargetPlatform == TargetPlatform.iOS ||
+        defaultTargetPlatform == TargetPlatform.android;
+  }
+
+  bool get isConnected => _status == CastingStatus.connected;
+  bool get isPlaying => _playbackStatus == CastingPlaybackStatus.playing;
+  bool get isBuffering => _playbackStatus == CastingPlaybackStatus.buffering;
+  bool get isStopped => _playbackStatus == CastingPlaybackStatus.stopped;
+
+  Future<void> initialize() async {
+    if (!isSupportedOnThisPlatform) {
+      _setStatus(CastingStatus.unavailable);
+      return;
+    }
+
+    _eventSubscription?.cancel();
+    _eventSubscription = _eventChannel.receiveBroadcastStream().listen(
+      _handleEvent,
+      onError: (Object error) {
+        _lastError = error.toString();
+        _setStatus(CastingStatus.error);
+      },
+    );
+
+    try {
+      final dynamic status = await _methodChannel.invokeMethod<dynamic>(
+        'getStatus',
+      );
+      _handleEvent(status);
+    } on PlatformException catch (error) {
+      _lastError = error.message ?? error.code;
+      _setStatus(CastingStatus.error);
+    }
+  }
+
+  Future<void> showDevicePicker() async {
+    if (!isSupportedOnThisPlatform) {
+      _setStatus(CastingStatus.unavailable);
+      return;
+    }
+
+    _setStatus(CastingStatus.connecting);
+
+    try {
+      await _methodChannel.invokeMethod<void>('showDevicePicker');
+    } on PlatformException catch (error) {
+      _lastError = error.message ?? error.code;
+      _setStatus(CastingStatus.error);
+    }
+  }
+
+  Future<void> startCastingLiveStream({
+    required String streamUrl,
+    required String title,
+    required String subtitle,
+  }) async {
+    if (!isSupportedOnThisPlatform) {
+      _setStatus(CastingStatus.unavailable);
+      return;
+    }
+
+    try {
+      await _methodChannel.invokeMethod<void>('startCastingLiveStream', {
+        'streamUrl': streamUrl,
+        'title': title,
+        'subtitle': subtitle,
+      });
+    } on PlatformException catch (error) {
+      _lastError = error.message ?? error.code;
+      _setStatus(CastingStatus.error);
+    }
+  }
+
+  Future<void> disconnect() async {
+    if (!isSupportedOnThisPlatform) {
+      _setStatus(CastingStatus.unavailable);
+      return;
+    }
+
+    try {
+      await _methodChannel.invokeMethod<void>('disconnect');
+    } on PlatformException catch (error) {
+      _lastError = error.message ?? error.code;
+      _setStatus(CastingStatus.error);
+    }
+  }
+
+  Future<void> stopPlayback() async {
+    if (!isSupportedOnThisPlatform) {
+      _setStatus(CastingStatus.unavailable);
+      return;
+    }
+
+    try {
+      await _methodChannel.invokeMethod<void>('stopCastingPlayback');
+    } on PlatformException catch (error) {
+      _lastError = error.message ?? error.code;
+      _setStatus(CastingStatus.error);
+    }
+  }
+
+  void _handleEvent(dynamic event) {
+    if (event is! Map) {
+      return;
+    }
+
+    final String? status = event['status'] as String?;
+    final String? playbackStatus = event['playbackStatus'] as String?;
+    final String? deviceName = event['deviceName'] as String?;
+    final String? message = event['message'] as String?;
+
+    if (deviceName != null && deviceName.isNotEmpty) {
+      _connectedDeviceName = deviceName;
+    }
+
+    if (message != null && message.isNotEmpty) {
+      _lastError = message;
+    }
+
+    _setPlaybackStatus(_parsePlaybackStatus(playbackStatus));
+
+    switch (status) {
+      case 'idle':
+        _setStatus(CastingStatus.idle);
+        break;
+      case 'connecting':
+        _setStatus(CastingStatus.connecting);
+        break;
+      case 'connected':
+        _setStatus(CastingStatus.connected);
+        break;
+      case 'error':
+        _setStatus(CastingStatus.error);
+        break;
+      case 'unavailable':
+      default:
+        _setStatus(CastingStatus.unavailable);
+        break;
+    }
+  }
+
+  void _setStatus(CastingStatus status) {
+    if (_status == status) {
+      return;
+    }
+
+    _status = status;
+    notifyListeners();
+  }
+
+  CastingPlaybackStatus _parsePlaybackStatus(String? playbackStatus) {
+    switch (playbackStatus) {
+      case 'playing':
+        return CastingPlaybackStatus.playing;
+      case 'buffering':
+        return CastingPlaybackStatus.buffering;
+      case 'stopped':
+        return CastingPlaybackStatus.stopped;
+      default:
+        return CastingPlaybackStatus.unknown;
+    }
+  }
+
+  void _setPlaybackStatus(CastingPlaybackStatus status) {
+    if (_playbackStatus == status) {
+      return;
+    }
+
+    _playbackStatus = status;
+    notifyListeners();
+  }
+
+  @override
+  void dispose() {
+    _eventSubscription?.cancel();
+    super.dispose();
+  }
+}