split up search page

mobile/lib/providers/search/paginated_search.provider.dart

@@ -1,5 +1,6 @@
 import 'package:hooks_riverpod/hooks_riverpod.dart';
 import 'package:immich_mobile/models/search/search_result.model.dart';
+import 'package:immich_mobile/providers/search/is_searching.provider.dart';
 import 'package:immich_mobile/services/timeline.service.dart';
 import 'package:immich_mobile/widgets/asset_grid/asset_grid_data_structure.dart';
 import 'package:immich_mobile/models/search/search_filter.model.dart';
@@ -10,36 +11,41 @@ part 'paginated_search.provider.g.dart';
 
 final paginatedSearchProvider =
     StateNotifierProvider<PaginatedSearchNotifier, SearchResult>(
-  (ref) => PaginatedSearchNotifier(ref.watch(searchServiceProvider)),
+  (ref) => PaginatedSearchNotifier(ref),
 );
 
 class PaginatedSearchNotifier extends StateNotifier<SearchResult> {
-  final SearchService _searchService;
+  final Ref ref;
 
-  PaginatedSearchNotifier(this._searchService)
-      : super(SearchResult(assets: [], nextPage: 1));
+  PaginatedSearchNotifier(this.ref)
+      : super(const SearchResult(assets: [], nextPage: 1));
 
   Future<bool> search(SearchFilter filter) async {
     if (state.nextPage == null) {
       return false;
     }
 
-    final result = await _searchService.search(filter, state.nextPage!);
+    ref.read(isSearchingProvider.notifier).value = true;
+    try {
+      final result =
+          await ref.read(searchServiceProvider).search(filter, state.nextPage!);
+      if (result == null) {
+        return false;
+      }
 
-    if (result == null) {
-      return false;
+      state = SearchResult(
+        assets: [...state.assets, ...result.assets],
+        nextPage: result.nextPage,
+      );
+    } finally {
+      ref.read(isSearchingProvider.notifier).value = false;
     }
 
-    state = SearchResult(
-      assets: [...state.assets, ...result.assets],
-      nextPage: result.nextPage,
-    );
-
     return true;
   }
 
   clear() {
-    state = SearchResult(assets: [], nextPage: 1);
+    state = const SearchResult(assets: [], nextPage: 1);
   }
 }