Feat: Fügt Benachrichtigungen für nicht überprüfte Transaktionen hinzu

lib/Tasks/BackgroundHandler/workers.dart

@@ -0,0 +1,41 @@
+import 'dart:async';
+
+import 'package:isolate_manager/isolate_manager.dart';
+
+import '../generate_transactions_task.dart';
+import '../show_notifications_task.dart';
+import 'background_init_web.dart' if (dart.library.io) 'background_init.dart';
+
+@pragma('vm:entry-point')
+@isolateManagerWorker
+/// Führt eine Hintergrundtask lokal aus
+Future<void> runTask(final Map<String, dynamic> params) async {
+  final String taskName = params['taskName'];
+  final int initialDelayMinutes = params['initialDelayMinutes'];
+  final int frequencyMinutes = params['frequencyMinutes'];
+
+  await Future.delayed(Duration(minutes: initialDelayMinutes));
+
+  await executeTask(taskName, null);
+
+  await Future.delayed(Duration(minutes: frequencyMinutes));
+
+  unawaited(runTask(params));
+}
+
+/// Funktion um Hintergrundaufgaben auszuführen
+Future<bool> executeTask(
+  final String taskName,
+  final Map<String, dynamic>? inputData,
+) async {
+  await initBackground();
+
+  switch (taskName) {
+    case 'generate_transactions':
+      return GenerateTransactionsTask().execute();
+    case 'show_notifications':
+      return ShowNotificationsTask().execute();
+  }
+
+  return Future.value(true);
+}