fix(mobile): cast discovery fix test

mobile/ios/Podfile.lock

@@ -60,4 +60,4 @@ SPEC CHECKSUMS:
 
 PODFILE CHECKSUM: 3c43a700a4bffb4120bf696cad263aefd4bb3c8c
 
-COCOAPODS: 1.16.2
+COCOAPODS: 1.17.0

mobile/lib/providers/cast.provider.dart

@@ -1,5 +1,6 @@
 import 'dart:async';
 
+import 'package:flutter/foundation.dart';
 import 'package:hooks_riverpod/hooks_riverpod.dart';
 import 'package:immich_mobile/domain/models/asset/base_asset.model.dart';
 import 'package:immich_mobile/models/cast/cast_manager_state.dart';
@@ -57,9 +58,9 @@ class CastNotifier extends StateNotifier<CastManagerState> {
     await _castService.connect(device);
   }
 
-  Future<List<CastDestination>> getDevices() {
-    return _castService.getDevices();
-  }
+  Listenable get discoveryChanges => _castService.discoveryChanges;
+
+  List<CastDestination> get currentDevices => _castService.currentDevices;
 
   void toggle() {
     switch (state.castState) {

mobile/lib/repositories/cast.repository.dart

@@ -1,5 +1,6 @@
 import 'dart:async';
 import 'package:fcast_sender_sdk/fcast_sender_sdk.dart';
+import 'package:flutter/foundation.dart';
 import 'package:hooks_riverpod/hooks_riverpod.dart';
 
 final castRepositoryProvider = Provider((_) => CastRepository());
@@ -12,11 +13,15 @@ class CastRepository {
   void Function(DeviceEvent)? onDeviceEvent;
 
   final Map<(String, ProtocolType), (DeviceInfo, int?)> _discoveredDevices = {};
+  final ValueNotifier<int> _discoveryRevision = ValueNotifier(0);
   int _currentDeviceGeneration = 0;
-  late final Future<void> _initialized;
+
+  Listenable get discoveryChanges => _discoveryRevision;
+
+  List<(DeviceInfo, int?)> get destinations => _discoveredDevices.values.toList(growable: false);
 
   void init() {
-    _initialized = _initialize();
+    unawaited(_initialize());
   }
 
   Future<void> connect(DeviceInfo deviceInfo) async {
@@ -69,12 +74,6 @@ class CastRepository {
   void stop() => _activeDevice?.stopPlayback();
   void seekTo(Duration position) => _activeDevice?.seek(timeSeconds: position.inSeconds.toDouble());
 
-  Future<List<(DeviceInfo, int?)>> listDestinations() async {
-    await _initialized;
-
-    return _discoveredDevices.values.toList(growable: false);
-  }
-
   Future<void> _initialize() async {
     await FCastSenderSdkLib.init();
     _castContext = CastContext();
@@ -88,9 +87,10 @@ class CastRepository {
         case DiscoveryEventDeviceRemoved():
           _discoveredDevices.removeWhere((key, _) => key.$1 == event.name);
       }
+
+      _discoveryRevision.value++;
     });
 
     await discoverer.init();
-    await Future.delayed(const Duration(seconds: 3));
   }
 }

mobile/lib/services/cast.service.dart

@@ -1,4 +1,5 @@
 import 'package:fcast_sender_sdk/fcast_sender_sdk.dart';
+import 'package:flutter/foundation.dart';
 import 'package:hooks_riverpod/hooks_riverpod.dart';
 import 'package:immich_mobile/constants/constants.dart';
 import 'package:immich_mobile/domain/models/asset/base_asset.model.dart';
@@ -161,8 +162,10 @@ class CastService {
 
   bool hasDisplayCapability(int capabilities) => (capabilities & 0x01) != 0;
 
-  Future<List<CastDestination>> getDevices() async {
-    final dests = await _castRepository.listDestinations();
+  Listenable get discoveryChanges => _castRepository.discoveryChanges;
+
+  List<CastDestination> get currentDevices {
+    final dests = _castRepository.destinations;
 
     final fCastDevices = dests.where((dest) => dest.$1.protocol == ProtocolType.fCast).map((dest) => dest.$1);
     final fCastNames = fCastDevices.map((device) => device.name).toSet();

mobile/lib/widgets/asset_viewer/cast_dialog.dart

@@ -27,20 +27,15 @@ class CastDialog extends ConsumerWidget {
       content: SizedBox(
         width: 250,
         height: 250,
-        child: FutureBuilder<List<CastDestination>>(
-          future: ref.watch(castProvider.notifier).getDevices(),
-          builder: (context, snapshot) {
-            if (snapshot.hasError) {
-              return Text('error_saving_image'.tr(args: [snapshot.error.toString()]));
-            } else if (!snapshot.hasData) {
-              return const SizedBox(height: 48, child: Center(child: CircularProgressIndicator()));
-            }
+        child: ListenableBuilder(
+          listenable: ref.watch(castProvider.notifier).discoveryChanges,
+          builder: (context, _) {
+            final devices = ref.read(castProvider.notifier).currentDevices;
 
-            if (snapshot.data!.isEmpty) {
+            if (devices.isEmpty) {
               return const Text('no_cast_devices_found').tr();
             }
 
-            final devices = snapshot.data!;
             final connected = devices.where((d) => isCurrentDevice(d.$1)).toList();
             final others = devices.where((d) => !isCurrentDevice(d.$1)).toList();