fix(mobile): do not removed not backup asset when selecting the corre…

…spond options (immich-app#13256)

* fixed the local ids selecting issue

* code: updated impl inside deleteLocalOnlyAssets

* fix: used png instead of jpg to maintain picture quality

* Revert "fix: used png instead of jpg to maintain picture quality"

This reverts commit 04f2ed5.

* fix: update logic from code-review perspective

* refractor (mobile) : Dart fix applied

* fix (mobile) : Updated multi grid as per requirement

---------

Co-authored-by: Alex <alex.tran1502@gmail.com>

mobile/lib/providers/asset.provider.dart

@@ -84,34 +84,48 @@ class AssetNotifier extends StateNotifier<bool> {
     _deleteInProgress = true;
     state = true;
     try {
+      // Filter the assets based on the backed-up status
       final assets = onlyBackedUp
           ? deleteAssets.where((e) => e.storage == AssetState.merged)
           : deleteAssets;
+
+      if (assets.isEmpty) {
+        return false; // No assets to delete
+      }
+
+      // Proceed with local deletion of the filtered assets
       final localDeleted = await _deleteLocalAssets(assets);
+
       if (localDeleted.isNotEmpty) {
-        final localOnlyIds = deleteAssets
+        final localOnlyIds = assets
             .where((e) => e.storage == AssetState.local)
             .map((e) => e.id)
             .toList();
-        // Update merged assets to remote only
+
+        // Update merged assets to remote-only
         final mergedAssets =
-            deleteAssets.where((e) => e.storage == AssetState.merged).map((e) {
+            assets.where((e) => e.storage == AssetState.merged).map((e) {
           e.localId = null;
           return e;
         }).toList();
+
+        // Update the local database
         await _db.writeTxn(() async {
           if (mergedAssets.isNotEmpty) {
-            await _db.assets.putAll(mergedAssets);
+            await _db.assets
+                .putAll(mergedAssets); // Use the filtered merged assets
           }
           await _db.exifInfos.deleteAll(localOnlyIds);
           await _db.assets.deleteAll(localOnlyIds);
         });
+
         return true;
       }
     } finally {
       _deleteInProgress = false;
       state = false;
     }
+
     return false;
   }
 

mobile/lib/widgets/asset_grid/multiselect_grid.dart

@@ -203,18 +203,30 @@ class MultiselectGrid extends HookConsumerWidget {
     void onDeleteLocal(bool onlyBackedUp) async {
       processing.value = true;
       try {
+        // Select only the local assets from the selection
         final localIds = selection.value.where((a) => a.isLocal).toList();
 
+        // Delete only the backed-up assets if 'onlyBackedUp' is true
         final isDeleted = await ref
             .read(assetProvider.notifier)
             .deleteLocalOnlyAssets(localIds, onlyBackedUp: onlyBackedUp);
+
         if (isDeleted) {
+          // Show a toast with the correct number of deleted assets
+          final deletedCount = localIds
+              .where(
+                (e) => !onlyBackedUp || e.isRemote,
+              ) // Only count backed-up assets
+              .length;
+
           ImmichToast.show(
             context: context,
             msg: 'assets_removed_permanently_from_device'
-                .tr(args: ["${localIds.length}"]),
+                .tr(args: ["$deletedCount"]),
             gravity: ToastGravity.BOTTOM,
           );
+
+          // Reset the selection
           selectionEnabledHook.value = false;
         }
       } finally {