mirror of
https://github.com/dz0ny/meshcore-sar.git
synced 2026-08-11 16:30:28 +00:00
722 lines
23 KiB
Dart
722 lines
23 KiB
Dart
import 'package:flutter/material.dart';
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import 'package:flutter_local_notifications/flutter_local_notifications.dart';
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import 'package:shared_preferences/shared_preferences.dart';
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import 'package:timezone/data/latest_all.dart' as tz;
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import '../models/sar_marker.dart';
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import '../l10n/app_localizations.dart';
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/// Notification Service - manages urgent notifications for SAR messages
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/// Provides critical alert functionality for SAR marker events
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class NotificationService {
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static final NotificationService _instance = NotificationService._internal();
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factory NotificationService() => _instance;
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NotificationService._internal();
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final FlutterLocalNotificationsPlugin _notificationsPlugin =
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FlutterLocalNotificationsPlugin();
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static const String _prefMessagesEnabled = 'notifications_messages_enabled';
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static const String _prefSarEnabled = 'notifications_sar_enabled';
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static const String _prefUpdatesEnabled = 'notifications_updates_enabled';
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static const String _prefMuteForeground = 'notifications_mute_foreground';
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bool _isInitialized = false;
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bool _permissionGranted = false;
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bool _messageNotificationsEnabled = true;
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bool _sarNotificationsEnabled = true;
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bool _updateNotificationsEnabled = true;
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bool _muteForegroundNotifications = true;
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AppLifecycleState _lifecycleState = AppLifecycleState.resumed;
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// Notification IDs
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static const int _sarNotificationId = 1000;
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static const int _messageNotificationId = 2000;
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static const int _updateNotificationId = 3000;
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// Notification channels
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static const String _urgentChannelId = 'sar_urgent';
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static const String _urgentChannelName = 'SAR Urgent Alerts';
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static const String _urgentChannelDescription =
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'Critical alerts for SAR markers (found persons, fires, staging areas)';
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static const String _messagesChannelId = 'messages';
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static const String _messagesChannelName = 'Messages';
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static const String _messagesChannelDescription =
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'Notifications for incoming messages from contacts and channels';
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static const String _updateChannelId = 'app_updates';
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static const String _updateChannelName = 'App Updates';
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static const String _updateChannelDescription =
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'Notifications for available app updates';
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bool get messageNotificationsEnabled => _messageNotificationsEnabled;
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bool get sarNotificationsEnabled => _sarNotificationsEnabled;
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bool get updateNotificationsEnabled => _updateNotificationsEnabled;
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bool get muteForegroundNotifications => _muteForegroundNotifications;
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bool get isAppInForeground => _lifecycleState == AppLifecycleState.resumed;
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/// Initialize notification service
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Future<void> initialize() async {
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if (_isInitialized) return;
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try {
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debugPrint('📬 [NotificationService] Initializing...');
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WidgetsBinding.instance.addObserver(_LifecycleObserver(this));
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_lifecycleState =
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WidgetsBinding.instance.lifecycleState ?? AppLifecycleState.resumed;
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// Initialize timezone data
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tz.initializeTimeZones();
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// Android initialization settings
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const androidSettings = AndroidInitializationSettings(
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'@mipmap/ic_launcher',
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);
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// iOS initialization settings
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final darwinSettings = DarwinInitializationSettings(
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requestAlertPermission: true,
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requestBadgePermission: true,
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requestSoundPermission: true,
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);
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// Combined initialization settings
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final initSettings = InitializationSettings(
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android: androidSettings,
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iOS: darwinSettings,
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);
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// Initialize plugin
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await _notificationsPlugin.initialize(
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settings: initSettings,
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onDidReceiveNotificationResponse: _onNotificationResponse,
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);
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// Request permissions
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await _requestPermissions();
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await _loadPreferences();
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// Create notification channels (Android)
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await _createNotificationChannels();
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_isInitialized = true;
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debugPrint('✅ [NotificationService] Initialized successfully');
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debugPrint(' Permission granted: $_permissionGranted');
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} catch (e) {
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debugPrint('❌ [NotificationService] Initialization error: $e');
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}
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}
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/// Request notification permissions
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Future<void> _requestPermissions() async {
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try {
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// iOS permissions
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final iosPlugin = _notificationsPlugin
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.resolvePlatformSpecificImplementation<
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IOSFlutterLocalNotificationsPlugin
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>();
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if (iosPlugin != null) {
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final granted = await iosPlugin.requestPermissions(
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alert: true,
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badge: true,
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sound: true,
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);
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_permissionGranted = granted ?? false;
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debugPrint(
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'📱 [NotificationService] iOS permissions granted: $_permissionGranted',
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);
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return; // Exit early if on iOS
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}
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// Android 13+ permissions
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final androidPlugin = _notificationsPlugin
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.resolvePlatformSpecificImplementation<
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AndroidFlutterLocalNotificationsPlugin
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>();
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if (androidPlugin != null) {
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final granted = await androidPlugin.requestNotificationsPermission();
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_permissionGranted = granted ?? false;
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debugPrint(
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'🤖 [NotificationService] Android permissions granted: $_permissionGranted',
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);
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return; // Exit early if on Android
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}
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// If neither platform plugin is available, assume permissions are granted
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// This handles older Android versions that don't require runtime permissions
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_permissionGranted = true;
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debugPrint(
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'✅ [NotificationService] No platform plugin found, assuming permissions granted',
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);
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} catch (e) {
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debugPrint('⚠️ [NotificationService] Error requesting permissions: $e');
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}
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}
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Future<void> _loadPreferences() async {
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final prefs = await SharedPreferences.getInstance();
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_messageNotificationsEnabled = prefs.getBool(_prefMessagesEnabled) ?? true;
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_sarNotificationsEnabled = prefs.getBool(_prefSarEnabled) ?? true;
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_updateNotificationsEnabled = prefs.getBool(_prefUpdatesEnabled) ?? true;
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_muteForegroundNotifications = prefs.getBool(_prefMuteForeground) ?? true;
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}
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Future<void> setMessageNotificationsEnabled(bool value) async {
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_messageNotificationsEnabled = value;
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final prefs = await SharedPreferences.getInstance();
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await prefs.setBool(_prefMessagesEnabled, value);
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}
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Future<void> setSarNotificationsEnabled(bool value) async {
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_sarNotificationsEnabled = value;
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final prefs = await SharedPreferences.getInstance();
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await prefs.setBool(_prefSarEnabled, value);
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}
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Future<void> setUpdateNotificationsEnabled(bool value) async {
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_updateNotificationsEnabled = value;
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final prefs = await SharedPreferences.getInstance();
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await prefs.setBool(_prefUpdatesEnabled, value);
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}
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Future<void> setMuteForegroundNotifications(bool value) async {
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_muteForegroundNotifications = value;
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final prefs = await SharedPreferences.getInstance();
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await prefs.setBool(_prefMuteForeground, value);
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}
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void handleAppLifecycleStateChanged(AppLifecycleState state) {
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_lifecycleState = state;
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}
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bool _shouldSuppressForegroundNotifications() {
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return _muteForegroundNotifications && isAppInForeground;
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}
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/// Create notification channels for Android
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Future<void> _createNotificationChannels() async {
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try {
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final androidPlugin = _notificationsPlugin
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.resolvePlatformSpecificImplementation<
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AndroidFlutterLocalNotificationsPlugin
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>();
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if (androidPlugin == null) return;
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// Urgent SAR channel with maximum priority
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const urgentChannel = AndroidNotificationChannel(
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_urgentChannelId,
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_urgentChannelName,
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description: _urgentChannelDescription,
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importance: Importance.max,
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playSound: true,
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enableVibration: true,
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enableLights: true,
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showBadge: true,
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sound: RawResourceAndroidNotificationSound('notification'),
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);
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// Messages channel with high priority
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const messagesChannel = AndroidNotificationChannel(
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_messagesChannelId,
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_messagesChannelName,
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description: _messagesChannelDescription,
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importance: Importance.high,
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playSound: true,
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enableVibration: true,
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showBadge: true,
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);
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// App updates channel with default priority
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const updateChannel = AndroidNotificationChannel(
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_updateChannelId,
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_updateChannelName,
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description: _updateChannelDescription,
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importance: Importance.defaultImportance,
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playSound: false,
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enableVibration: false,
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showBadge: true,
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);
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await androidPlugin.createNotificationChannel(urgentChannel);
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await androidPlugin.createNotificationChannel(messagesChannel);
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await androidPlugin.createNotificationChannel(updateChannel);
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debugPrint('✅ [NotificationService] Created notification channels');
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} catch (e) {
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debugPrint('⚠️ [NotificationService] Error creating channels: $e');
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}
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}
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/// Callback for handling notification taps (set by main.dart)
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void Function(String?)? onNotificationTapped;
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/// Handle notification tap (foreground)
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void _onNotificationResponse(NotificationResponse response) {
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debugPrint(
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'🔔 [NotificationService] Notification tapped: ${response.payload}',
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);
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// Call the registered callback if available
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if (onNotificationTapped != null) {
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onNotificationTapped!(response.payload);
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}
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}
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/// Show urgent notification for SAR marker
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Future<void> showSarNotification({
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required SarMarkerType type,
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required String senderName,
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required String coordinates,
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String? notes,
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AppLocalizations? localizations,
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}) async {
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if (!_isInitialized) {
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debugPrint(
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'⚠️ [NotificationService] Not initialized, skipping notification',
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);
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return;
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}
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if (!_permissionGranted) {
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debugPrint(
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'⚠️ [NotificationService] Permission not granted, skipping notification',
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);
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return;
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}
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if (!_sarNotificationsEnabled) {
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debugPrint('ℹ️ [NotificationService] SAR notifications disabled');
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return;
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}
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if (_shouldSuppressForegroundNotifications()) {
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debugPrint(
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'ℹ️ [NotificationService] App in foreground, skipping SAR notification',
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);
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return;
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}
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try {
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// Generate unique notification ID based on timestamp
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final notificationId =
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_sarNotificationId + (DateTime.now().millisecondsSinceEpoch % 1000);
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// Build notification title and body
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final title = _buildNotificationTitle(type, localizations);
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final body = _buildNotificationBody(
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type: type,
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senderName: senderName,
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coordinates: coordinates,
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notes: notes,
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localizations: localizations,
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);
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// Android notification details
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final androidDetails = AndroidNotificationDetails(
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_urgentChannelId,
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_urgentChannelName,
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channelDescription: _urgentChannelDescription,
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importance: Importance.max,
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priority: Priority.high,
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ticker: title,
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playSound: true,
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enableVibration: true,
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enableLights: true,
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color: Color(_getNotificationColor(type)),
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colorized: true,
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showWhen: true,
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when: DateTime.now().millisecondsSinceEpoch,
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category: AndroidNotificationCategory.alarm, // High priority category
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fullScreenIntent: true, // Show as full screen on some devices
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styleInformation: BigTextStyleInformation(
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body,
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contentTitle: title,
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summaryText: _getSummaryText(type, localizations),
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),
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);
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// iOS notification details
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final darwinDetails = DarwinNotificationDetails(
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presentAlert: true,
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presentBadge: true,
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presentSound: true,
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sound: 'default',
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badgeNumber: 1,
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threadIdentifier: 'sar_markers',
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categoryIdentifier: 'SAR_ALERT',
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interruptionLevel: InterruptionLevel.timeSensitive,
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);
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// Combined notification details
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final notificationDetails = NotificationDetails(
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android: androidDetails,
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iOS: darwinDetails,
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);
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// Show notification
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await _notificationsPlugin.show(
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id: notificationId,
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title: title,
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body: body,
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notificationDetails: notificationDetails,
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payload: 'sar:${type.name}:$coordinates',
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);
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debugPrint('✅ [NotificationService] Showed SAR notification: $title');
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debugPrint(' Type: ${type.displayName}');
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debugPrint(' Sender: $senderName');
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debugPrint(' Coordinates: $coordinates');
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} catch (e) {
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debugPrint('❌ [NotificationService] Error showing notification: $e');
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}
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}
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/// Build notification title based on SAR marker type
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String _buildNotificationTitle(
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SarMarkerType type,
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AppLocalizations? localizations,
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) {
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if (localizations == null) {
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return '${type.emoji} ${type.displayName} Detected';
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}
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switch (type) {
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case SarMarkerType.foundPerson:
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return '${type.emoji} ${localizations.sarMarkerFoundPerson}';
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case SarMarkerType.fire:
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return '${type.emoji} ${localizations.sarMarkerFire}';
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case SarMarkerType.stagingArea:
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return '${type.emoji} ${localizations.sarMarkerStagingArea}';
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case SarMarkerType.object:
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return '${type.emoji} ${localizations.sarMarkerObject}';
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case SarMarkerType.unknown:
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return '${type.emoji} ${localizations.sarAlert}';
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}
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}
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/// Build notification body with all details
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String _buildNotificationBody({
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required SarMarkerType type,
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required String senderName,
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required String coordinates,
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String? notes,
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AppLocalizations? localizations,
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}) {
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final buffer = StringBuffer();
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// Sender
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if (localizations != null) {
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buffer.write('${localizations.from}: $senderName\n');
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buffer.write('${localizations.coordinates}: $coordinates');
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} else {
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buffer.write('From: $senderName\n');
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buffer.write('Coordinates: $coordinates');
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}
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// Optional notes
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if (notes != null && notes.isNotEmpty) {
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buffer.write('\n\n$notes');
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}
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return buffer.toString();
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}
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/// Get summary text for notification
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String _getSummaryText(SarMarkerType type, AppLocalizations? localizations) {
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if (localizations == null) {
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return 'Tap to view on map';
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}
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return localizations.tapToViewOnMap;
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}
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/// Get notification color based on SAR marker type
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int _getNotificationColor(SarMarkerType type) {
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// Return ARGB color codes
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switch (type) {
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case SarMarkerType.foundPerson:
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return 0xFF4CAF50; // Green
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case SarMarkerType.fire:
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return 0xFFF44336; // Red
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case SarMarkerType.stagingArea:
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return 0xFFFF9800; // Orange
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case SarMarkerType.object:
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return 0xFF2196F3; // Blue
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case SarMarkerType.unknown:
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return 0xFF9E9E9E; // Gray
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}
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}
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/// Show notification for regular message (contact or channel)
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Future<void> showMessageNotification({
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required String senderName,
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required String messageText,
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required bool isChannelMessage,
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String? channelName,
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AppLocalizations? localizations,
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}) async {
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if (!_isInitialized) {
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debugPrint(
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'⚠️ [NotificationService] Not initialized, skipping notification',
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);
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return;
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}
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if (!_permissionGranted) {
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debugPrint(
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'⚠️ [NotificationService] Permission not granted, skipping notification',
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);
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return;
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}
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if (!_messageNotificationsEnabled) {
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debugPrint('ℹ️ [NotificationService] Message notifications disabled');
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return;
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}
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if (_shouldSuppressForegroundNotifications()) {
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debugPrint(
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'ℹ️ [NotificationService] App in foreground, skipping message notification',
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);
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return;
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}
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try {
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// Generate unique notification ID based on timestamp
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final notificationId =
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_messageNotificationId +
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(DateTime.now().millisecondsSinceEpoch % 1000);
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// Build notification title and body
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final resolvedChannelName = channelName?.trim().isNotEmpty == true
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? channelName!.trim()
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: (localizations?.publicChannel ?? 'Public');
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final title = isChannelMessage
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? (localizations != null
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? '${localizations.channel}: $resolvedChannelName'
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: 'Channel: $resolvedChannelName')
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: (localizations != null
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? '${localizations.newMessage} ${localizations.from} $senderName'
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: 'New message from $senderName');
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final body = messageText.length > 200
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? '${messageText.substring(0, 200)}...'
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: messageText;
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// Android notification details
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final androidDetails = AndroidNotificationDetails(
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_messagesChannelId,
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_messagesChannelName,
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channelDescription: _messagesChannelDescription,
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importance: Importance.high,
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priority: Priority.high,
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ticker: title,
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playSound: true,
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enableVibration: true,
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showWhen: true,
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when: DateTime.now().millisecondsSinceEpoch,
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styleInformation: BigTextStyleInformation(
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body,
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contentTitle: title,
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summaryText: senderName,
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),
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);
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// iOS notification details
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final darwinDetails = DarwinNotificationDetails(
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presentAlert: true,
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presentBadge: true,
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presentSound: true,
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sound: 'default',
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threadIdentifier: isChannelMessage
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? 'channel_messages'
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: 'direct_messages',
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subtitle: senderName,
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);
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// Combined notification details
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final notificationDetails = NotificationDetails(
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android: androidDetails,
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iOS: darwinDetails,
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);
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// Show notification
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await _notificationsPlugin.show(
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id: notificationId,
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title: title,
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body: body,
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notificationDetails: notificationDetails,
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payload: 'message:${isChannelMessage ? "channel" : "contact"}',
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);
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debugPrint('✅ [NotificationService] Showed message notification');
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debugPrint(' Sender: $senderName');
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debugPrint(' Type: ${isChannelMessage ? "Channel" : "Direct"}');
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} catch (e) {
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debugPrint(
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'❌ [NotificationService] Error showing message notification: $e',
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);
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}
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}
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/// Cancel all notifications
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Future<void> cancelAll() async {
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try {
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await _notificationsPlugin.cancelAll();
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debugPrint('✅ [NotificationService] Cancelled all notifications');
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} catch (e) {
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debugPrint('❌ [NotificationService] Error canceling notifications: $e');
|
||
}
|
||
}
|
||
|
||
/// Cancel specific notification
|
||
Future<void> cancel(int id) async {
|
||
try {
|
||
await _notificationsPlugin.cancel(id: id);
|
||
debugPrint('✅ [NotificationService] Cancelled notification: $id');
|
||
} catch (e) {
|
||
debugPrint('❌ [NotificationService] Error canceling notification: $e');
|
||
}
|
||
}
|
||
|
||
/// Check if notifications are enabled
|
||
Future<bool> areNotificationsEnabled() async {
|
||
try {
|
||
final androidPlugin = _notificationsPlugin
|
||
.resolvePlatformSpecificImplementation<
|
||
AndroidFlutterLocalNotificationsPlugin
|
||
>();
|
||
if (androidPlugin != null) {
|
||
final enabled = await androidPlugin.areNotificationsEnabled();
|
||
return enabled ?? false;
|
||
}
|
||
|
||
// For iOS, assume enabled if permission was granted
|
||
return _permissionGranted;
|
||
} catch (e) {
|
||
debugPrint(
|
||
'⚠️ [NotificationService] Error checking notification status: $e',
|
||
);
|
||
return false;
|
||
}
|
||
}
|
||
|
||
/// Get pending notifications
|
||
Future<List<PendingNotificationRequest>> getPendingNotifications() async {
|
||
try {
|
||
return await _notificationsPlugin.pendingNotificationRequests();
|
||
} catch (e) {
|
||
debugPrint(
|
||
'⚠️ [NotificationService] Error getting pending notifications: $e',
|
||
);
|
||
return [];
|
||
}
|
||
}
|
||
|
||
/// Show notification for available app update
|
||
Future<void> showUpdateNotification({
|
||
required String currentVersion,
|
||
required String latestVersion,
|
||
required String downloadUrl,
|
||
AppLocalizations? localizations,
|
||
}) async {
|
||
if (!_isInitialized) {
|
||
debugPrint(
|
||
'⚠️ [NotificationService] Not initialized, skipping notification',
|
||
);
|
||
return;
|
||
}
|
||
|
||
if (!_permissionGranted) {
|
||
debugPrint(
|
||
'⚠️ [NotificationService] Permission not granted, skipping notification',
|
||
);
|
||
return;
|
||
}
|
||
if (!_updateNotificationsEnabled) {
|
||
debugPrint('ℹ️ [NotificationService] Update notifications disabled');
|
||
return;
|
||
}
|
||
if (_shouldSuppressForegroundNotifications()) {
|
||
debugPrint(
|
||
'ℹ️ [NotificationService] App in foreground, skipping update notification',
|
||
);
|
||
return;
|
||
}
|
||
|
||
try {
|
||
// Build notification title and body
|
||
final title = localizations?.updateAvailable ?? 'App Update Available';
|
||
final body = localizations != null
|
||
? '${localizations.currentVersion}: $currentVersion\n'
|
||
'${localizations.latestVersion}: $latestVersion'
|
||
: 'Current: $currentVersion\nLatest: $latestVersion';
|
||
|
||
// Android notification details
|
||
final androidDetails = AndroidNotificationDetails(
|
||
_updateChannelId,
|
||
_updateChannelName,
|
||
channelDescription: _updateChannelDescription,
|
||
importance: Importance.defaultImportance,
|
||
priority: Priority.defaultPriority,
|
||
ticker: title,
|
||
playSound: false,
|
||
enableVibration: false,
|
||
showWhen: true,
|
||
when: DateTime.now().millisecondsSinceEpoch,
|
||
icon: '@mipmap/ic_launcher',
|
||
color: const Color(0xFF2196F3), // Blue
|
||
colorized: true,
|
||
category: AndroidNotificationCategory.recommendation,
|
||
styleInformation: BigTextStyleInformation(
|
||
body,
|
||
contentTitle: title,
|
||
summaryText: localizations?.downloadUpdate ?? 'Tap to download',
|
||
),
|
||
// Make notification ongoing so it doesn't get dismissed easily
|
||
ongoing: false,
|
||
autoCancel: true,
|
||
);
|
||
|
||
// iOS notification details
|
||
final darwinDetails = DarwinNotificationDetails(
|
||
presentAlert: true,
|
||
presentBadge: true,
|
||
presentSound: false,
|
||
threadIdentifier: 'app_updates',
|
||
categoryIdentifier: 'APP_UPDATE',
|
||
subtitle: 'New version: $latestVersion',
|
||
);
|
||
|
||
// Combined notification details
|
||
final notificationDetails = NotificationDetails(
|
||
android: androidDetails,
|
||
iOS: darwinDetails,
|
||
);
|
||
|
||
// Show notification
|
||
await _notificationsPlugin.show(
|
||
id: _updateNotificationId,
|
||
title: title,
|
||
body: body,
|
||
notificationDetails: notificationDetails,
|
||
payload: 'update:$downloadUrl',
|
||
);
|
||
|
||
debugPrint('✅ [NotificationService] Showed update notification');
|
||
debugPrint(' Current: $currentVersion');
|
||
debugPrint(' Latest: $latestVersion');
|
||
debugPrint(' Download URL: $downloadUrl');
|
||
} catch (e) {
|
||
debugPrint(
|
||
'❌ [NotificationService] Error showing update notification: $e',
|
||
);
|
||
}
|
||
}
|
||
}
|
||
|
||
class _LifecycleObserver with WidgetsBindingObserver {
|
||
_LifecycleObserver(this._service);
|
||
|
||
final NotificationService _service;
|
||
|
||
@override
|
||
void didChangeAppLifecycleState(AppLifecycleState state) {
|
||
_service.handleAppLifecycleStateChanged(state);
|
||
}
|
||
}
|