feat(04-01): Android config, NotificationService, DAO queries, timezone init, ARB strings

- Add flutter_local_notifications ^21.0.0, timezone ^0.11.0, flutter_timezone ^1.0.8 to pubspec.yaml - Set compileSdk=35, enable core library desugaring in build.gradle.kts - Add POST_NOTIFICATIONS, RECEIVE_BOOT_COMPLETED permissions and boot receivers to AndroidManifest.xml - Create NotificationService singleton with initialize, requestPermission, scheduleDailyNotification, cancelAll - Add getOverdueAndTodayTaskCount and getOverdueTaskCount one-shot queries to DailyPlanDao - Initialize timezone and NotificationService in main.dart before runApp - Add 7 notification-related ARB strings to app_de.arb - All 72 existing tests pass
2026-03-16 14:52:29 +01:00
parent abc56f032f
commit 878767138c
7 changed files with 155 additions and 3 deletions
--- a/lib/core/notifications/notification_service.dart
+++ b/lib/core/notifications/notification_service.dart
@@ -0,0 +1,80 @@
+import 'package:flutter/foundation.dart';
+import 'package:flutter/material.dart' show TimeOfDay;
+import 'package:flutter_local_notifications/flutter_local_notifications.dart';
+import 'package:timezone/timezone.dart' as tz;
+
+class NotificationService {
+  static final NotificationService _instance = NotificationService._internal();
+  factory NotificationService() => _instance;
+  NotificationService._internal();
+
+  final _plugin = FlutterLocalNotificationsPlugin();
+
+  Future<void> initialize() async {
+    const android = AndroidInitializationSettings('@mipmap/ic_launcher');
+    const settings = InitializationSettings(android: android);
+    await _plugin.initialize(
+      settings,
+      onDidReceiveNotificationResponse: _onTap,
+    );
+  }
+
+  Future<bool> requestPermission() async {
+    final android = _plugin
+        .resolvePlatformSpecificImplementation<
+            AndroidFlutterLocalNotificationsPlugin>();
+    return await android?.requestNotificationsPermission() ?? false;
+  }
+
+  Future<void> scheduleDailyNotification({
+    required TimeOfDay time,
+    required String title,
+    required String body,
+  }) async {
+    await _plugin.cancelAll();
+    final scheduledDate = _nextInstanceOf(time);
+    const details = NotificationDetails(
+      android: AndroidNotificationDetails(
+        'daily_summary',
+        'Tägliche Zusammenfassung',
+        channelDescription: 'Tägliche Aufgaben-Erinnerung',
+        importance: Importance.defaultImportance,
+        priority: Priority.defaultPriority,
+      ),
+    );
+    await _plugin.zonedSchedule(
+      0,
+      title: title,
+      body: body,
+      scheduledDate: scheduledDate,
+      details,
+      androidScheduleMode: AndroidScheduleMode.inexactAllowWhileIdle,
+      matchDateTimeComponents: DateTimeComponents.time,
+    );
+  }
+
+  Future<void> cancelAll() => _plugin.cancelAll();
+
+  /// Computes the next occurrence of [time] as a [tz.TZDateTime].
+  /// Returns today if [time] is still in the future, tomorrow otherwise.
+  @visibleForTesting
+  tz.TZDateTime nextInstanceOf(TimeOfDay time) {
+    final now = tz.TZDateTime.now(tz.local);
+    var scheduled = tz.TZDateTime(
+      tz.local,
+      now.year,
+      now.month,
+      now.day,
+      time.hour,
+      time.minute,
+    );
+    if (scheduled.isBefore(now)) {
+      scheduled = scheduled.add(const Duration(days: 1));
+    }
+    return scheduled;
+  }
+
+  static void _onTap(NotificationResponse response) {
+    // Navigation to Home tab — wired in Plan 02 via global navigator key
+  }
+}