Files
meshcore-sar_android/lib/services/notification_service.dart
2026-05-10 17:48:13 +02:00

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import 'dart:async';
import 'package:flutter/material.dart';
import 'package:flutter_local_notifications/flutter_local_notifications.dart';
import 'package:shared_preferences/shared_preferences.dart';
import 'package:timezone/data/latest_all.dart' as tz;
import '../models/sar_marker.dart';
import '../l10n/app_localizations.dart';
/// Notification Service - manages urgent notifications for SAR messages
/// Provides critical alert functionality for SAR marker events
class NotificationService {
static final NotificationService _instance = NotificationService._internal();
factory NotificationService() => _instance;
NotificationService._internal();
final FlutterLocalNotificationsPlugin _notificationsPlugin =
FlutterLocalNotificationsPlugin();
static const String _prefMessagesEnabled = 'notifications_messages_enabled';
static const String _prefSarEnabled = 'notifications_sar_enabled';
static const String _prefDiscoveryEnabled = 'notifications_discovery_enabled';
static const String _prefUpdatesEnabled = 'notifications_updates_enabled';
static const String _prefMuteForeground = 'notifications_mute_foreground';
bool _isInitialized = false;
bool _permissionGranted = false;
bool _messageNotificationsEnabled = true;
bool _sarNotificationsEnabled = true;
bool _discoveryNotificationsEnabled = true;
bool _updateNotificationsEnabled = true;
bool _muteForegroundNotifications = true;
AppLifecycleState _lifecycleState = AppLifecycleState.resumed;
String? _launchPayload;
Timer? _messageNotificationTimer;
int _pendingMessageNotificationCount = 0;
String? _pendingMessageSenderName;
String? _pendingMessageText;
bool _pendingMessageIsChannel = false;
String? _pendingMessageChannelName;
AppLocalizations? _pendingMessageLocalizations;
// Notification IDs
static const int _sarNotificationId = 1000;
static const int _messageNotificationId = 2000;
static const int _updateNotificationId = 3000;
static const int _batteryNotificationId = 4000;
static const int _discoveryNotificationId = 5000;
static const Duration _messageNotificationCoalesceWindow =
Duration(seconds: 2);
// Notification channels
static const String _urgentChannelId = 'sar_urgent';
static const String _urgentChannelName = 'SAR Urgent Alerts';
static const String _urgentChannelDescription =
'Critical alerts for SAR markers (found persons, fires, staging areas)';
static const String _messagesChannelId = 'messages';
static const String _messagesChannelName = 'Messages';
static const String _messagesChannelDescription =
'Notifications for incoming messages from contacts and channels';
static const String _updateChannelId = 'app_updates';
static const String _updateChannelName = 'App Updates';
static const String _updateChannelDescription =
'Notifications for available app updates';
static const String _batteryChannelId = 'battery_alerts';
static const String _batteryChannelName = 'Battery Alerts';
static const String _batteryChannelDescription =
'Notifications when a device or contact battery is low';
static const String _discoveryChannelId = 'discovery_alerts';
static const String _discoveryChannelName = 'Discovery Alerts';
static const String _discoveryChannelDescription =
'Notifications when new contacts are discovered';
bool get messageNotificationsEnabled => _messageNotificationsEnabled;
bool get sarNotificationsEnabled => _sarNotificationsEnabled;
bool get discoveryNotificationsEnabled => _discoveryNotificationsEnabled;
bool get updateNotificationsEnabled => _updateNotificationsEnabled;
bool get muteForegroundNotifications => _muteForegroundNotifications;
bool get isAppInForeground => _lifecycleState == AppLifecycleState.resumed;
/// Initialize notification service
Future<void> initialize() async {
if (_isInitialized) return;
try {
debugPrint('📬 [NotificationService] Initializing...');
WidgetsBinding.instance.addObserver(_LifecycleObserver(this));
_lifecycleState =
WidgetsBinding.instance.lifecycleState ?? AppLifecycleState.resumed;
// Initialize timezone data
tz.initializeTimeZones();
// Android initialization settings
const androidSettings = AndroidInitializationSettings(
'@mipmap/ic_launcher',
);
// iOS initialization settings
final darwinSettings = DarwinInitializationSettings(
requestAlertPermission: true,
requestBadgePermission: true,
requestSoundPermission: true,
);
// Combined initialization settings
final initSettings = InitializationSettings(
android: androidSettings,
iOS: darwinSettings,
);
// Initialize plugin
await _notificationsPlugin.initialize(
settings: initSettings,
onDidReceiveNotificationResponse: _onNotificationResponse,
);
final launchDetails = await _notificationsPlugin
.getNotificationAppLaunchDetails();
if (launchDetails?.didNotificationLaunchApp ?? false) {
_launchPayload = launchDetails?.notificationResponse?.payload;
}
// Request permissions
await _requestPermissions();
await _loadPreferences();
// Create notification channels (Android)
await _createNotificationChannels();
_isInitialized = true;
debugPrint('✅ [NotificationService] Initialized successfully');
debugPrint(' Permission granted: $_permissionGranted');
} catch (e) {
debugPrint('❌ [NotificationService] Initialization error: $e');
}
}
/// Request notification permissions
Future<void> _requestPermissions() async {
try {
// iOS permissions
final iosPlugin = _notificationsPlugin
.resolvePlatformSpecificImplementation<
IOSFlutterLocalNotificationsPlugin
>();
if (iosPlugin != null) {
final granted = await iosPlugin.requestPermissions(
alert: true,
badge: true,
sound: true,
);
_permissionGranted = granted ?? false;
debugPrint(
'📱 [NotificationService] iOS permissions granted: $_permissionGranted',
);
return; // Exit early if on iOS
}
// Android 13+ permissions
final androidPlugin = _notificationsPlugin
.resolvePlatformSpecificImplementation<
AndroidFlutterLocalNotificationsPlugin
>();
if (androidPlugin != null) {
final granted = await androidPlugin.requestNotificationsPermission();
_permissionGranted = granted ?? false;
debugPrint(
'🤖 [NotificationService] Android permissions granted: $_permissionGranted',
);
return; // Exit early if on Android
}
// If neither platform plugin is available, assume permissions are granted
// This handles older Android versions that don't require runtime permissions
_permissionGranted = true;
debugPrint(
'✅ [NotificationService] No platform plugin found, assuming permissions granted',
);
} catch (e) {
debugPrint('⚠️ [NotificationService] Error requesting permissions: $e');
}
}
Future<void> _loadPreferences() async {
final prefs = await SharedPreferences.getInstance();
_messageNotificationsEnabled = prefs.getBool(_prefMessagesEnabled) ?? true;
_sarNotificationsEnabled = prefs.getBool(_prefSarEnabled) ?? true;
_discoveryNotificationsEnabled =
prefs.getBool(_prefDiscoveryEnabled) ?? true;
_updateNotificationsEnabled = prefs.getBool(_prefUpdatesEnabled) ?? true;
_muteForegroundNotifications = prefs.getBool(_prefMuteForeground) ?? true;
}
Future<void> setMessageNotificationsEnabled(bool value) async {
_messageNotificationsEnabled = value;
final prefs = await SharedPreferences.getInstance();
await prefs.setBool(_prefMessagesEnabled, value);
}
Future<void> setSarNotificationsEnabled(bool value) async {
_sarNotificationsEnabled = value;
final prefs = await SharedPreferences.getInstance();
await prefs.setBool(_prefSarEnabled, value);
}
Future<void> setDiscoveryNotificationsEnabled(bool value) async {
_discoveryNotificationsEnabled = value;
final prefs = await SharedPreferences.getInstance();
await prefs.setBool(_prefDiscoveryEnabled, value);
}
Future<void> setUpdateNotificationsEnabled(bool value) async {
_updateNotificationsEnabled = value;
final prefs = await SharedPreferences.getInstance();
await prefs.setBool(_prefUpdatesEnabled, value);
}
Future<void> setMuteForegroundNotifications(bool value) async {
_muteForegroundNotifications = value;
final prefs = await SharedPreferences.getInstance();
await prefs.setBool(_prefMuteForeground, value);
}
void handleAppLifecycleStateChanged(AppLifecycleState state) {
_lifecycleState = state;
}
bool _shouldSuppressForegroundNotifications() {
return _muteForegroundNotifications && isAppInForeground;
}
/// Create notification channels for Android
Future<void> _createNotificationChannels() async {
try {
final androidPlugin = _notificationsPlugin
.resolvePlatformSpecificImplementation<
AndroidFlutterLocalNotificationsPlugin
>();
if (androidPlugin == null) return;
// Urgent SAR channel with maximum priority
const urgentChannel = AndroidNotificationChannel(
_urgentChannelId,
_urgentChannelName,
description: _urgentChannelDescription,
importance: Importance.max,
playSound: true,
enableVibration: true,
enableLights: true,
showBadge: true,
sound: RawResourceAndroidNotificationSound('notification'),
);
// Messages channel with high priority
const messagesChannel = AndroidNotificationChannel(
_messagesChannelId,
_messagesChannelName,
description: _messagesChannelDescription,
importance: Importance.high,
playSound: true,
enableVibration: true,
showBadge: true,
);
// App updates channel with default priority
const updateChannel = AndroidNotificationChannel(
_updateChannelId,
_updateChannelName,
description: _updateChannelDescription,
importance: Importance.defaultImportance,
playSound: false,
enableVibration: false,
showBadge: true,
);
const batteryChannel = AndroidNotificationChannel(
_batteryChannelId,
_batteryChannelName,
description: _batteryChannelDescription,
importance: Importance.high,
playSound: true,
enableVibration: true,
showBadge: true,
);
const discoveryChannel = AndroidNotificationChannel(
_discoveryChannelId,
_discoveryChannelName,
description: _discoveryChannelDescription,
importance: Importance.high,
playSound: true,
enableVibration: true,
showBadge: true,
);
await androidPlugin.createNotificationChannel(urgentChannel);
await androidPlugin.createNotificationChannel(messagesChannel);
await androidPlugin.createNotificationChannel(updateChannel);
await androidPlugin.createNotificationChannel(batteryChannel);
await androidPlugin.createNotificationChannel(discoveryChannel);
debugPrint('✅ [NotificationService] Created notification channels');
} catch (e) {
debugPrint('⚠️ [NotificationService] Error creating channels: $e');
}
}
/// Callback for handling notification taps (set by main.dart)
void Function(String?)? onNotificationTapped;
/// Handle notification tap (foreground)
void _onNotificationResponse(NotificationResponse response) {
debugPrint(
'🔔 [NotificationService] Notification tapped: ${response.payload}',
);
// Call the registered callback if available
if (onNotificationTapped != null) {
onNotificationTapped!(response.payload);
}
}
String? consumeLaunchPayload() {
final payload = _launchPayload;
_launchPayload = null;
return payload;
}
/// Show urgent notification for SAR marker
Future<void> showSarNotification({
required SarMarkerType type,
required String senderName,
required String coordinates,
String? notes,
AppLocalizations? localizations,
}) async {
if (!_isInitialized) {
debugPrint(
'⚠️ [NotificationService] Not initialized, skipping notification',
);
return;
}
if (!_permissionGranted) {
debugPrint(
'⚠️ [NotificationService] Permission not granted, skipping notification',
);
return;
}
if (!_sarNotificationsEnabled) {
debugPrint(' [NotificationService] SAR notifications disabled');
return;
}
if (_shouldSuppressForegroundNotifications()) {
debugPrint(
' [NotificationService] App in foreground, skipping SAR notification',
);
return;
}
try {
// Generate unique notification ID based on timestamp
final notificationId =
_sarNotificationId + (DateTime.now().millisecondsSinceEpoch % 1000);
// Build notification title and body
final title = _buildNotificationTitle(type, localizations);
final body = _buildNotificationBody(
type: type,
senderName: senderName,
coordinates: coordinates,
notes: notes,
localizations: localizations,
);
// Android notification details
final androidDetails = AndroidNotificationDetails(
_urgentChannelId,
_urgentChannelName,
channelDescription: _urgentChannelDescription,
importance: Importance.max,
priority: Priority.high,
ticker: title,
playSound: true,
enableVibration: true,
enableLights: true,
color: Color(_getNotificationColor(type)),
colorized: true,
showWhen: true,
when: DateTime.now().millisecondsSinceEpoch,
category: AndroidNotificationCategory.alarm, // High priority category
fullScreenIntent: true, // Show as full screen on some devices
styleInformation: BigTextStyleInformation(
body,
contentTitle: title,
summaryText: _getSummaryText(type, localizations),
),
);
// iOS notification details
final darwinDetails = DarwinNotificationDetails(
presentAlert: true,
presentBadge: true,
presentSound: true,
sound: 'default',
badgeNumber: 1,
threadIdentifier: 'sar_markers',
categoryIdentifier: 'SAR_ALERT',
interruptionLevel: InterruptionLevel.timeSensitive,
);
// Combined notification details
final notificationDetails = NotificationDetails(
android: androidDetails,
iOS: darwinDetails,
);
// Show notification
await _notificationsPlugin.show(
id: notificationId,
title: title,
body: body,
notificationDetails: notificationDetails,
payload: 'sar:${type.name}:$coordinates',
);
debugPrint('✅ [NotificationService] Showed SAR notification: $title');
debugPrint(' Type: ${type.displayName}');
debugPrint(' Sender: $senderName');
debugPrint(' Coordinates: $coordinates');
} catch (e) {
debugPrint('❌ [NotificationService] Error showing notification: $e');
}
}
/// Build notification title based on SAR marker type
String _buildNotificationTitle(
SarMarkerType type,
AppLocalizations? localizations,
) {
if (localizations == null) {
return '${type.emoji} ${type.displayName} Detected';
}
switch (type) {
case SarMarkerType.foundPerson:
return '${type.emoji} ${localizations.sarMarkerFoundPerson}';
case SarMarkerType.fire:
return '${type.emoji} ${localizations.sarMarkerFire}';
case SarMarkerType.stagingArea:
return '${type.emoji} ${localizations.sarMarkerStagingArea}';
case SarMarkerType.object:
return '${type.emoji} ${localizations.sarMarkerObject}';
case SarMarkerType.unknown:
return '${type.emoji} ${localizations.sarAlert}';
}
}
/// Build notification body with all details
String _buildNotificationBody({
required SarMarkerType type,
required String senderName,
required String coordinates,
String? notes,
AppLocalizations? localizations,
}) {
final buffer = StringBuffer();
// Sender
if (localizations != null) {
buffer.write('${localizations.from}: $senderName\n');
buffer.write('${localizations.coordinates}: $coordinates');
} else {
buffer.write('From: $senderName\n');
buffer.write('Coordinates: $coordinates');
}
// Optional notes
if (notes != null && notes.isNotEmpty) {
buffer.write('\n\n$notes');
}
return buffer.toString();
}
/// Get summary text for notification
String _getSummaryText(SarMarkerType type, AppLocalizations? localizations) {
if (localizations == null) {
return 'Tap to view on map';
}
return localizations.tapToViewOnMap;
}
/// Get notification color based on SAR marker type
int _getNotificationColor(SarMarkerType type) {
// Return ARGB color codes
switch (type) {
case SarMarkerType.foundPerson:
return 0xFF4CAF50; // Green
case SarMarkerType.fire:
return 0xFFF44336; // Red
case SarMarkerType.stagingArea:
return 0xFFFF9800; // Orange
case SarMarkerType.object:
return 0xFF2196F3; // Blue
case SarMarkerType.unknown:
return 0xFF9E9E9E; // Gray
}
}
/// Show notification for regular message (contact or channel)
Future<void> showMessageNotification({
required String senderName,
required String messageText,
required bool isChannelMessage,
String? channelName,
AppLocalizations? localizations,
}) async {
if (!_isInitialized) {
debugPrint(
'⚠️ [NotificationService] Not initialized, skipping notification',
);
return;
}
if (!_permissionGranted) {
debugPrint(
'⚠️ [NotificationService] Permission not granted, skipping notification',
);
return;
}
if (!_messageNotificationsEnabled) {
debugPrint(' [NotificationService] Message notifications disabled');
return;
}
if (_shouldSuppressForegroundNotifications()) {
debugPrint(
' [NotificationService] App in foreground, skipping message notification',
);
return;
}
_pendingMessageNotificationCount++;
_pendingMessageSenderName = senderName;
_pendingMessageText = messageText;
_pendingMessageIsChannel = isChannelMessage;
_pendingMessageChannelName = channelName;
_pendingMessageLocalizations = localizations;
_messageNotificationTimer?.cancel();
_messageNotificationTimer = Timer(_messageNotificationCoalesceWindow, () {
unawaited(_flushMessageNotification());
});
}
Future<void> _flushMessageNotification() async {
final count = _pendingMessageNotificationCount;
final senderName = _pendingMessageSenderName;
final messageText = _pendingMessageText;
final isChannelMessage = _pendingMessageIsChannel;
final channelName = _pendingMessageChannelName;
final localizations = _pendingMessageLocalizations;
_pendingMessageNotificationCount = 0;
_pendingMessageSenderName = null;
_pendingMessageText = null;
_pendingMessageIsChannel = false;
_pendingMessageChannelName = null;
_pendingMessageLocalizations = null;
if (count == 0 || senderName == null || messageText == null) {
return;
}
if (!_isInitialized ||
!_permissionGranted ||
!_messageNotificationsEnabled ||
_shouldSuppressForegroundNotifications()) {
return;
}
try {
// Build notification title and body
final resolvedChannelName = channelName?.trim().isNotEmpty == true
? channelName!.trim()
: (localizations?.publicChannel ?? 'Public');
final title = count > 1
? (localizations?.messages ?? 'Messages')
: isChannelMessage
? (localizations != null
? '${localizations.channel}: $resolvedChannelName'
: 'Channel: $resolvedChannelName')
: (localizations != null
? '${localizations.newMessage} ${localizations.from} $senderName'
: 'New message from $senderName');
final body = count > 1
? 'You have $count new messages'
: messageText.length > 200
? '${messageText.substring(0, 200)}...'
: messageText;
// Android notification details
final androidDetails = AndroidNotificationDetails(
_messagesChannelId,
_messagesChannelName,
channelDescription: _messagesChannelDescription,
importance: Importance.high,
priority: Priority.high,
ticker: title,
playSound: true,
enableVibration: true,
showWhen: true,
when: DateTime.now().millisecondsSinceEpoch,
styleInformation: BigTextStyleInformation(
body,
contentTitle: title,
summaryText: count > 1 ? body : senderName,
),
);
// iOS notification details
final darwinDetails = DarwinNotificationDetails(
presentAlert: true,
presentBadge: true,
presentSound: true,
sound: 'default',
threadIdentifier: isChannelMessage
? 'channel_messages'
: 'direct_messages',
subtitle: senderName,
);
// Combined notification details
final notificationDetails = NotificationDetails(
android: androidDetails,
iOS: darwinDetails,
);
// Show notification
await _notificationsPlugin.show(
id: _messageNotificationId,
title: title,
body: body,
notificationDetails: notificationDetails,
payload: 'message:${isChannelMessage ? "channel" : "contact"}',
);
debugPrint('✅ [NotificationService] Showed message notification');
debugPrint(' Count: $count');
debugPrint(' Sender: $senderName');
debugPrint(' Type: ${isChannelMessage ? "Channel" : "Direct"}');
} catch (e) {
debugPrint(
'❌ [NotificationService] Error showing message notification: $e',
);
}
}
/// Cancel all notifications
Future<void> cancelAll() async {
try {
await _notificationsPlugin.cancelAll();
debugPrint('✅ [NotificationService] Cancelled all notifications');
} catch (e) {
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: $e',
);
return [];
}
}
/// Show notification for available app update
Future<void> showUpdateNotification({
required String currentVersion,
required String latestVersion,
required String downloadUrl,
AppLocalizations? localizations,
}) async {
if (!_isInitialized) {
debugPrint(
'⚠️ [NotificationService] Not initialized, skipping notification',
);
return;
}
if (!_permissionGranted) {
debugPrint(
'⚠️ [NotificationService] Permission not granted, skipping notification',
);
return;
}
if (!_updateNotificationsEnabled) {
debugPrint(' [NotificationService] Update notifications disabled');
return;
}
if (_shouldSuppressForegroundNotifications()) {
debugPrint(
' [NotificationService] App in foreground, skipping update notification',
);
return;
}
try {
// Build notification title and body
final title = localizations?.updateAvailable ?? 'App Update Available';
final body = localizations != null
? '${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: localizations?.newVersionAvailable(latestVersion) ?? '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: $e',
);
}
}
Future<bool> showLowBatteryNotification({
required String nodeId,
required String nodeName,
required double batteryPercent,
required bool isCurrentDevice,
}) async {
if (!_isInitialized) {
debugPrint(
'⚠️ [NotificationService] Not initialized, skipping notification',
);
return false;
}
if (!_permissionGranted) {
debugPrint(
'⚠️ [NotificationService] Permission not granted, skipping notification',
);
return false;
}
if (!_messageNotificationsEnabled) {
debugPrint(' [NotificationService] Message notifications disabled');
return false;
}
if (_shouldSuppressForegroundNotifications()) {
debugPrint(
' [NotificationService] App in foreground, skipping low battery notification',
);
return false;
}
final roundedPercent = batteryPercent.round().clamp(0, 100);
final title = isCurrentDevice
? 'Device battery low'
: 'Contact battery low';
final body = isCurrentDevice
? '$nodeName battery is at $roundedPercent%.'
: '$nodeName is at $roundedPercent% battery.';
final notificationId =
_batteryNotificationId + ((nodeId.hashCode & 0x7fffffff) % 1000);
try {
final androidDetails = AndroidNotificationDetails(
_batteryChannelId,
_batteryChannelName,
channelDescription: _batteryChannelDescription,
importance: Importance.high,
priority: Priority.high,
ticker: title,
playSound: true,
enableVibration: true,
showWhen: true,
when: DateTime.now().millisecondsSinceEpoch,
styleInformation: BigTextStyleInformation(
body,
contentTitle: title,
summaryText: '$roundedPercent%',
),
);
final darwinDetails = DarwinNotificationDetails(
presentAlert: true,
presentBadge: true,
presentSound: true,
sound: 'default',
threadIdentifier: 'battery_alerts',
subtitle: '$roundedPercent%',
);
final notificationDetails = NotificationDetails(
android: androidDetails,
iOS: darwinDetails,
);
await _notificationsPlugin.show(
id: notificationId,
title: title,
body: body,
notificationDetails: notificationDetails,
payload: 'battery:$nodeId',
);
debugPrint(
'✅ [NotificationService] Showed low battery notification for $nodeName ($roundedPercent%)',
);
return true;
} catch (e) {
debugPrint(
'❌ [NotificationService] Error showing low battery notification: $e',
);
return false;
}
}
Future<bool> showContactDiscoveredNotification({
required String contactKey,
String? contactName,
}) async {
if (!_isInitialized) return false;
if (!_permissionGranted) return false;
if (!_discoveryNotificationsEnabled) return false;
if (_shouldSuppressForegroundNotifications()) return false;
final shortKey = contactKey.length > 12
? contactKey.substring(0, 12).toUpperCase()
: contactKey.toUpperCase();
final title = 'New contact discovered';
final resolvedName = contactName?.trim();
final body = resolvedName != null && resolvedName.isNotEmpty
? '$resolvedName is available in Discovery.'
: 'New contact $shortKey is available in Discovery.';
final notificationId =
_discoveryNotificationId + ((contactKey.hashCode & 0x7fffffff) % 1000);
try {
final androidDetails = AndroidNotificationDetails(
_discoveryChannelId,
_discoveryChannelName,
channelDescription: _discoveryChannelDescription,
importance: Importance.high,
priority: Priority.high,
ticker: title,
playSound: true,
enableVibration: true,
showWhen: true,
when: DateTime.now().millisecondsSinceEpoch,
);
final darwinDetails = DarwinNotificationDetails(
presentAlert: true,
presentBadge: true,
presentSound: true,
sound: 'default',
threadIdentifier: 'discovery_alerts',
);
await _notificationsPlugin.show(
id: notificationId,
title: title,
body: body,
notificationDetails: NotificationDetails(
android: androidDetails,
iOS: darwinDetails,
),
payload: 'discovery:$contactKey',
);
return true;
} catch (e) {
debugPrint(
'❌ [NotificationService] Error showing discovery notification: $e',
);
return false;
}
}
}
class _LifecycleObserver with WidgetsBindingObserver {
_LifecycleObserver(this._service);
final NotificationService _service;
@override
void didChangeAppLifecycleState(AppLifecycleState state) {
_service.handleAppLifecycleStateChanged(state);
}
}