Implemented delete asset on device and on database (#22)

* refactor serving file function asset service
* Remove PhotoViewer for now since it creates a problem in 2.10
* Added error message for wrong decode file and logo for failed to load file
* Fixed error when read stream cannot be created and crash server
* Added method to get all assets as a raw array
* Implemented cleaner way of grouping image
* Implemented operation to delete assets in the database
* Implemented delete on database operation
* Implemented delete on device operation
* Fixed issue display wrong information when the auto backup is enabled after deleting all assets

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

@@ -1,3 +1,5 @@
+import 'dart:async';
+
 import 'package:dio/dio.dart';
 import 'package:flutter/foundation.dart';
 import 'package:hive_flutter/hive_flutter.dart';
@@ -11,7 +13,7 @@ import 'package:immich_mobile/shared/services/backup.service.dart';
 import 'package:photo_manager/photo_manager.dart';
 
 class BackupNotifier extends StateNotifier<BackUpState> {
-  BackupNotifier(this.ref)
+  BackupNotifier({this.ref})
       : super(
           BackUpState(
             backupProgress: BackUpProgressEnum.idle,
@@ -32,22 +34,25 @@ class BackupNotifier extends StateNotifier<BackUpState> {
           ),
         );
 
-  final Ref ref;
+  Ref? ref;
   final BackupService _backupService = BackupService();
   final ServerInfoService _serverInfoService = ServerInfoService();
+  final StreamController _onAssetBackupStreamCtrl = StreamController.broadcast();
 
   void getBackupInfo() async {
     _updateServerInfo();
 
     List<AssetPathEntity> list = await PhotoManager.getAssetPathList(onlyAll: true, type: RequestType.common);
+    List<String> didBackupAsset = await _backupService.getDeviceBackupAsset();
 
     if (list.isEmpty) {
       debugPrint("No Asset On Device");
+      state = state.copyWith(
+          backupProgress: BackUpProgressEnum.idle, totalAssetCount: 0, assetOnDatabase: didBackupAsset.length);
       return;
     }
 
     int totalAsset = list[0].assetCount;
-    List<String> didBackupAsset = await _backupService.getDeviceBackupAsset();
 
     state = state.copyWith(totalAssetCount: totalAsset, assetOnDatabase: didBackupAsset.length);
   }
@@ -65,19 +70,21 @@ class BackupNotifier extends StateNotifier<BackUpState> {
       List<AssetPathEntity> list =
           await PhotoManager.getAssetPathList(hasAll: true, onlyAll: true, type: RequestType.common);
 
+      // Get device assets info from database
+      // Compare and find different assets that has not been backing up
+      // Backup those assets
+      List<String> backupAsset = await _backupService.getDeviceBackupAsset();
+
       if (list.isEmpty) {
         debugPrint("No Asset On Device - Abort Backup Process");
+        state = state.copyWith(
+            backupProgress: BackUpProgressEnum.idle, totalAssetCount: 0, assetOnDatabase: backupAsset.length);
         return;
       }
 
       int totalAsset = list[0].assetCount;
       List<AssetEntity> currentAssets = await list[0].getAssetListRange(start: 0, end: totalAsset);
 
-      // Get device assets info from database
-      // Compare and find different assets that has not been backing up
-      // Backup those assets
-      List<String> backupAsset = await _backupService.getDeviceBackupAsset();
-
       state = state.copyWith(totalAssetCount: totalAsset, assetOnDatabase: backupAsset.length);
       // Remove item that has already been backed up
       for (var backupAssetId in backupAsset) {
@@ -103,7 +110,7 @@ class BackupNotifier extends StateNotifier<BackUpState> {
     state = state.copyWith(backupProgress: BackUpProgressEnum.idle, progressInPercentage: 0.0);
   }
 
-  void _onAssetUploaded() {
+  void _onAssetUploaded(String deviceAssetId, String deviceId) {
     state =
         state.copyWith(backingUpAssetCount: state.backingUpAssetCount - 1, assetOnDatabase: state.assetOnDatabase + 1);
 
@@ -136,36 +143,36 @@ class BackupNotifier extends StateNotifier<BackUpState> {
   }
 
   void resumeBackup() {
-    debugPrint("[resumeBackup]");
-    var authState = ref.read(authenticationProvider);
+    var authState = ref?.read(authenticationProvider);
 
     // Check if user is login
     var accessKey = Hive.box(userInfoBox).get(accessTokenKey);
 
     // User has been logged out return
-    if (accessKey == null || !authState.isAuthenticated) {
-      debugPrint("[resumeBackup] not authenticated - abort");
-      return;
-    }
-
-    // Check if this device is enable backup by the user
-    if ((authState.deviceInfo.deviceId == authState.deviceId) && authState.deviceInfo.isAutoBackup) {
-      // check if backup is alreayd in process - then return
-      if (state.backupProgress == BackUpProgressEnum.inProgress) {
-        debugPrint("[resumeBackup] Backup is already in progress - abort");
+    if (authState != null) {
+      if (accessKey == null || !authState.isAuthenticated) {
+        debugPrint("[resumeBackup] not authenticated - abort");
         return;
       }
 
-      // Run backup
-      debugPrint("[resumeBackup] Start back up");
-      startBackupProcess();
-    }
+      // Check if this device is enable backup by the user
+      if ((authState.deviceInfo.deviceId == authState.deviceId) && authState.deviceInfo.isAutoBackup) {
+        // check if backup is alreayd in process - then return
+        if (state.backupProgress == BackUpProgressEnum.inProgress) {
+          debugPrint("[resumeBackup] Backup is already in progress - abort");
+          return;
+        }
 
-    debugPrint("[resumeBackup] User disables auto backup");
-    return;
+        // Run backup
+        debugPrint("[resumeBackup] Start back up");
+        startBackupProcess();
+      }
+
+      return;
+    }
   }
 }
 
 final backupProvider = StateNotifierProvider<BackupNotifier, BackUpState>((ref) {
-  return BackupNotifier(ref);
+  return BackupNotifier(ref: ref);
 });