fix: poll counts from DB rather than using callbacks from library (#22117)

Co-authored-by: shenlong-tanwen <139912620+shalong-tanwen@users.noreply.github.com>

mobile/lib/pages/backup/drift_backup.page.dart

@@ -1,3 +1,5 @@
+import 'dart:async';
+
 import 'package:auto_route/auto_route.dart';
 import 'package:easy_localization/easy_localization.dart';
 import 'package:flutter/material.dart';
@@ -9,11 +11,13 @@ import 'package:immich_mobile/extensions/build_context_extensions.dart';
 import 'package:immich_mobile/extensions/theme_extensions.dart';
 import 'package:immich_mobile/extensions/translate_extensions.dart';
 import 'package:immich_mobile/presentation/widgets/backup/backup_toggle_button.widget.dart';
+import 'package:immich_mobile/providers/app_settings.provider.dart';
 import 'package:immich_mobile/providers/background_sync.provider.dart';
 import 'package:immich_mobile/providers/backup/backup_album.provider.dart';
 import 'package:immich_mobile/providers/backup/drift_backup.provider.dart';
 import 'package:immich_mobile/providers/user.provider.dart';
 import 'package:immich_mobile/routing/router.dart';
+import 'package:immich_mobile/services/app_settings.service.dart';
 import 'package:immich_mobile/widgets/backup/backup_info_card.dart';
 
 @RoutePage()
@@ -25,6 +29,8 @@ class DriftBackupPage extends ConsumerStatefulWidget {
 }
 
 class _DriftBackupPageState extends ConsumerState<DriftBackupPage> {
+  Timer? _countPoller;
+
   @override
   void initState() {
     super.initState();
@@ -33,9 +39,42 @@ class _DriftBackupPageState extends ConsumerState<DriftBackupPage> {
       return;
     }
 
+    if (ref.read(appSettingsServiceProvider).getSetting(AppSettingsEnum.enableBackup)) {
+      _startCountPolling();
+    }
+
     ref.read(driftBackupProvider.notifier).getBackupStatus(currentUser.id);
   }
 
+  void _startCountPolling() {
+    _countPoller?.cancel();
+    _countPoller = Timer.periodic(const Duration(seconds: 5), (timer) async {
+      if (!mounted) {
+        timer.cancel();
+        return;
+      }
+
+      final currentUser = ref.read(currentUserProvider);
+      if (currentUser == null) {
+        timer.cancel();
+        return;
+      }
+
+      await ref.read(driftBackupProvider.notifier).getBackupStatus(currentUser.id);
+    });
+  }
+
+  void _stopCountPolling() {
+    _countPoller?.cancel();
+    _countPoller = null;
+  }
+
+  @override
+  void dispose() {
+    _stopCountPolling();
+    super.dispose();
+  }
+
   @override
   Widget build(BuildContext context) {
     final selectedAlbum = ref
@@ -55,10 +94,12 @@ class _DriftBackupPageState extends ConsumerState<DriftBackupPage> {
       await backgroundManager.syncRemote();
       await backupNotifier.getBackupStatus(currentUser.id);
       await backupNotifier.startBackup(currentUser.id);
+      _startCountPolling();
     }
 
     Future<void> stopBackup() async {
       await backupNotifier.cancel();
+      _stopCountPolling();
     }
 
     return Scaffold(

mobile/lib/providers/backup/drift_backup.provider.dart

@@ -12,8 +12,8 @@ import 'package:immich_mobile/infrastructure/repositories/backup.repository.dart
 import 'package:immich_mobile/providers/infrastructure/asset.provider.dart';
 import 'package:immich_mobile/providers/user.provider.dart';
 import 'package:immich_mobile/services/upload.service.dart';
-import 'package:logging/logging.dart';
 import 'package:immich_mobile/utils/debug_print.dart';
+import 'package:logging/logging.dart';
 
 class EnqueueStatus {
   final int enqueueCount;
@@ -234,10 +234,6 @@ class DriftBackupNotifier extends StateNotifier<DriftBackupState> {
 
     switch (update.status) {
       case TaskStatus.complete:
-        if (update.task.group == kBackupGroup) {
-          state = state.copyWith(backupCount: state.backupCount + 1, remainderCount: state.remainderCount - 1);
-        }
-
         // Remove the completed task from the upload items
         if (state.uploadItems.containsKey(taskId)) {
           Future.delayed(const Duration(milliseconds: 1000), () {