♿ Optimize notification background service

lib/background.dart

@@ -0,0 +1,109 @@
+import 'dart:ui';
+
+import 'package:flutter/material.dart' hide Notification;
+import 'package:flutter_background_service/flutter_background_service.dart';
+import 'package:flutter_local_notifications/flutter_local_notifications.dart';
+import 'package:get/get.dart';
+import 'package:shared_preferences/shared_preferences.dart';
+import 'package:solian/models/notification.dart';
+import 'package:solian/providers/auth.dart';
+import 'package:solian/providers/websocket.dart';
+
+FlutterBackgroundService? bgNotificationService;
+
+void autoConfigureBackgroundNotificationService() async {
+  if (bgNotificationService != null) return;
+
+  final prefs = await SharedPreferences.getInstance();
+  if (prefs.getBool('service_background_notification') != true) return;
+
+  bgNotificationService = FlutterBackgroundService();
+
+  await bgNotificationService!.configure(
+    androidConfiguration: AndroidConfiguration(
+      onStart: onBackgroundNotificationServiceStart,
+      autoStart: true,
+      autoStartOnBoot: true,
+      isForegroundMode: false,
+    ),
+    // This feature won't be able to use on iOS
+    // We got APNs support covered
+    iosConfiguration: IosConfiguration(
+      autoStart: false,
+    ),
+  );
+}
+
+void autoStartBackgroundNotificationService() async {
+  final prefs = await SharedPreferences.getInstance();
+  if (prefs.getBool('service_background_notification') != true) return;
+  if (bgNotificationService == null) return;
+  bgNotificationService!.startService();
+}
+
+void autoStopBackgroundNotificationService() async {
+  if (bgNotificationService == null) return;
+  if (await bgNotificationService!.isRunning()) {
+    bgNotificationService?.invoke('stopService');
+  }
+}
+
+@pragma('vm:entry-point')
+void onBackgroundNotificationServiceStart(ServiceInstance service) async {
+  WidgetsFlutterBinding.ensureInitialized();
+  DartPluginRegistrant.ensureInitialized();
+
+  Get.put(AuthProvider());
+  Get.put(WebSocketProvider());
+
+  service.on('stopService').listen((event) {
+    service.stopSelf();
+  });
+
+  final auth = Get.find<AuthProvider>();
+  await auth.refreshAuthorizeStatus();
+  await auth.ensureCredentials();
+  if (!auth.isAuthorized.value) {
+    debugPrint(
+      'Background notification do nothing due to user didn\'t sign in.',
+    );
+    return;
+  }
+
+  const notificationChannelId = 'solian_notification_service';
+
+  final FlutterLocalNotificationsPlugin flutterLocalNotificationsPlugin =
+      FlutterLocalNotificationsPlugin();
+
+  final ws = Get.find<WebSocketProvider>();
+  await ws.connect();
+  debugPrint('Background notification has been started');
+  ws.stream.stream.listen(
+    (event) {
+      debugPrint(
+        'Background notification service incoming message: ${event.method} ${event.message}',
+      );
+
+      if (event.method == 'notifications.new' && event.payload != null) {
+        final data = Notification.fromJson(event.payload!);
+        debugPrint(
+          'Background notification service got a notification id=${data.id}',
+        );
+        flutterLocalNotificationsPlugin.show(
+          data.id,
+          data.title,
+          [data.subtitle, data.body].where((x) => x != null).join('\n'),
+          const NotificationDetails(
+            android: AndroidNotificationDetails(
+              notificationChannelId,
+              'Solian Notification Service',
+              channelDescription: 'Notifications that sent via Solar Network',
+              importance: Importance.high,
+              icon: 'mipmap/ic_launcher',
+            ),
+          ),
+        );
+      }
+    },
+  );
+}

lib/main.dart

@@ -4,16 +4,13 @@ import 'package:firebase_core/firebase_core.dart';
 import 'package:firebase_crashlytics/firebase_crashlytics.dart';
 import 'package:flutter/material.dart' hide Notification;
 import 'package:flutter_acrylic/flutter_acrylic.dart';
-import 'package:flutter_background_service/flutter_background_service.dart';
-import 'package:flutter_local_notifications/flutter_local_notifications.dart';
 import 'package:get/get.dart';
 import 'package:go_router/go_router.dart';
 import 'package:protocol_handler/protocol_handler.dart';
 import 'package:provider/provider.dart';
-import 'package:shared_preferences/shared_preferences.dart';
+import 'package:solian/background.dart';
 import 'package:solian/bootstrapper.dart';
 import 'package:solian/firebase_options.dart';
-import 'package:solian/models/notification.dart';
 import 'package:solian/platform.dart';
 import 'package:solian/providers/attachment_uploader.dart';
 import 'package:solian/providers/daily_sign.dart';
@@ -70,82 +67,7 @@ Future<void> _initializeFirebase() async {
 }
 
 Future<void> _initializeBackgroundNotificationService() async {
-  final prefs = await SharedPreferences.getInstance();
-  if (prefs.getBool('service_background_notification') != true) return;
-
-  final service = FlutterBackgroundService();
-
-  await service.configure(
-    androidConfiguration: AndroidConfiguration(
-      onStart: onBackgroundNotificationServiceStart,
-      autoStart: true,
-      autoStartOnBoot: true,
-      isForegroundMode: false,
-    ),
-    // This feature won't be able to use on iOS
-    // We got APNs support covered
-    iosConfiguration: IosConfiguration(
-      autoStart: false,
-    ),
-  );
-
-  await service.startService();
-}
-
-@pragma('vm:entry-point')
-void onBackgroundNotificationServiceStart(ServiceInstance service) async {
-  WidgetsFlutterBinding.ensureInitialized();
-  DartPluginRegistrant.ensureInitialized();
-
-  Get.put(AuthProvider());
-  Get.put(WebSocketProvider());
-
-  final auth = Get.find<AuthProvider>();
-  await auth.refreshAuthorizeStatus();
-  await auth.ensureCredentials();
-  if (!auth.isAuthorized.value) {
-    debugPrint(
-      'Background notification do nothing due to user didn\'t sign in.',
-    );
-    return;
-  }
-
-  const notificationChannelId = 'solian_notification_service';
-
-  final FlutterLocalNotificationsPlugin flutterLocalNotificationsPlugin =
-      FlutterLocalNotificationsPlugin();
-
-  final ws = Get.find<WebSocketProvider>();
-  await ws.connect();
-  debugPrint('Background notification has been started');
-  ws.stream.stream.listen(
-    (event) {
-      debugPrint(
-        'Background notification service incoming message: ${event.method} ${event.message}',
-      );
-
-      if (event.method == 'notifications.new' && event.payload != null) {
-        final data = Notification.fromJson(event.payload!);
-        debugPrint(
-          'Background notification service got a notification id=${data.id}',
-        );
-        flutterLocalNotificationsPlugin.show(
-          data.id,
-          data.title,
-          [data.subtitle, data.body].where((x) => x != null).join('\n'),
-          const NotificationDetails(
-            android: AndroidNotificationDetails(
-              notificationChannelId,
-              'Solian Notification Service',
-              channelDescription: 'Notifications that sent via Solar Network',
-              importance: Importance.high,
-              icon: 'mipmap/ic_launcher',
-            ),
-          ),
-        );
-      }
-    },
-  );
+  autoConfigureBackgroundNotificationService();
 }
 
 Future<void> _initializePlatformComponents() async {

lib/providers/auth.dart

@@ -6,6 +6,7 @@ import 'package:flutter/material.dart';
 import 'package:flutter_secure_storage/flutter_secure_storage.dart';
 import 'package:get/get.dart';
 import 'package:get/get_connect/http/src/request/request.dart';
+import 'package:solian/background.dart';
 import 'package:solian/exceptions/request.dart';
 import 'package:solian/exceptions/unauthorized.dart';
 import 'package:solian/providers/database/database.dart';
@@ -200,6 +201,7 @@ class AuthProvider extends GetConnect {
     Get.find<WebSocketProvider>().notificationUnread.value = 0;
 
     AppDatabase.removeDatabase();
+    autoStopBackgroundNotificationService();
 
     storage.deleteAll();
   }

lib/screens/auth/signin.dart

@@ -2,6 +2,7 @@ import 'package:flutter/material.dart';
 import 'package:gap/gap.dart';
 import 'package:get/get.dart';
 import 'package:protocol_handler/protocol_handler.dart';
+import 'package:solian/background.dart';
 import 'package:solian/exts.dart';
 import 'package:solian/providers/websocket.dart';
 import 'package:solian/providers/auth.dart';
@@ -22,7 +23,7 @@ class _SignInPopupState extends State<SignInPopup> with ProtocolListener {
   final _usernameController = TextEditingController();
   final _passwordController = TextEditingController();
 
-  void requestResetPassword() async {
+  void _requestResetPassword() async {
     final username = _usernameController.value.text;
     if (username.isEmpty) {
       context.showErrorDialog('signinResetPasswordHint'.tr);
@@ -52,7 +53,7 @@ class _SignInPopupState extends State<SignInPopup> with ProtocolListener {
     context.showModalDialog('done'.tr, 'signinResetPasswordSent'.tr);
   }
 
-  void performAction() async {
+  void _performAction() async {
     final AuthProvider auth = Get.find();
 
     final username = _usernameController.value.text;
@@ -100,6 +101,8 @@ class _SignInPopupState extends State<SignInPopup> with ProtocolListener {
     }
 
     Get.find<WebSocketProvider>().registerPushNotifications();
+    autoConfigureBackgroundNotificationService();
+    autoStartBackgroundNotificationService();
 
     Navigator.pop(context, true);
   }
@@ -121,7 +124,7 @@ class _SignInPopupState extends State<SignInPopup> with ProtocolListener {
     final uri = url.replaceFirst('solink://', '');
     if (uri == 'auth?status=done') {
       closeInAppWebView();
-      performAction();
+      _performAction();
     }
   }
 
@@ -175,19 +178,19 @@ class _SignInPopupState extends State<SignInPopup> with ProtocolListener {
                 ),
                 onTapOutside: (_) =>
                     FocusManager.instance.primaryFocus?.unfocus(),
-                onSubmitted: (_) => performAction(),
+                onSubmitted: (_) => _performAction(),
               ),
               const Gap(12),
               Row(
                 mainAxisAlignment: MainAxisAlignment.spaceBetween,
                 children: [
                   TextButton(
-                    onPressed: _isBusy ? null : () => requestResetPassword(),
+                    onPressed: _isBusy ? null : () => _requestResetPassword(),
                     style: TextButton.styleFrom(foregroundColor: Colors.grey),
                     child: Text('forgotPassword'.tr),
                   ),
                   TextButton(
-                    onPressed: _isBusy ? null : () => performAction(),
+                    onPressed: _isBusy ? null : () => _performAction(),
                     child: Row(
                       mainAxisSize: MainAxisSize.min,
                       children: [