fix: isar crash on resume from app detach (#16599)

Co-authored-by: shenlong-tanwen <139912620+shalong-tanwen@users.noreply.github.com>
Co-authored-by: Alex <alex.tran1502@gmail.com>

mobile/analysis_options.yaml

@@ -70,6 +70,7 @@ custom_lint:
         - lib/infrastructure/repositories/{store,db,log}.repository.dart
         - lib/providers/infrastructure/db.provider.dart
         # acceptable exceptions for the time being (until Isar is fully replaced)
+        - lib/providers/app_life_cycle.provider.dart
         - integration_test/test_utils/general_helper.dart
         - lib/main.dart
         - lib/pages/album/album_asset_selection.page.dart

mobile/lib/domain/services/log.service.dart

@@ -1,5 +1,6 @@
 import 'dart:async';
 
+import 'package:flutter/foundation.dart';
 import 'package:immich_mobile/constants/constants.dart';
 import 'package:immich_mobile/domain/interfaces/log.interface.dart';
 import 'package:immich_mobile/domain/interfaces/store.interface.dart';
@@ -91,12 +92,13 @@ class LogService {
   }
 
   /// Flush pending log messages to persistent storage
-  Future<void> flush() async {
+  void flush() {
     if (_flushTimer == null) {
       return;
     }
     _flushTimer!.cancel();
-    await _flushBufferToDatabase();
+    // TODO: Rename enable this after moving to sqlite - #16504
+    // await _flushBufferToDatabase();
   }
 
   Future<void> dispose() {
@@ -106,6 +108,10 @@ class LogService {
   }
 
   void _writeLogToDatabase(LogRecord r) {
+    if (kDebugMode) {
+      debugPrint('[${r.level.name}] [${r.time}] ${r.message}');
+    }
+
     final record = LogMessage(
       message: r.message,
       level: r.level.toLogLevel(),

mobile/lib/providers/app_life_cycle.provider.dart

@@ -17,6 +17,7 @@ import 'package:immich_mobile/providers/server_info.provider.dart';
 import 'package:immich_mobile/providers/tab.provider.dart';
 import 'package:immich_mobile/providers/websocket.provider.dart';
 import 'package:immich_mobile/services/background.service.dart';
+import 'package:isar/isar.dart';
 import 'package:permission_handler/permission_handler.dart';
 
 enum AppLifeCycleEnum {
@@ -114,11 +115,13 @@ class AppLifeCycleNotifier extends StateNotifier<AppLifeCycleEnum> {
       _ref.read(websocketProvider.notifier).disconnect();
     }
 
-    unawaited(LogService.I.flush());
+    LogService.I.flush();
   }
 
-  void handleAppDetached() {
+  Future<void> handleAppDetached() async {
     state = AppLifeCycleEnum.detached;
+    LogService.I.flush();
+    await Isar.getInstance()?.close();
     // no guarantee this is called at all
     _ref.read(manualUploadProvider.notifier).cancelBackup();
   }