refactor(mobile): services and providers (#9232)

* refactor(mobile): services and provider

* providers

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

@@ -0,0 +1,62 @@
+import 'package:immich_mobile/providers/asset_viewer/render_list.provider.dart';
+import 'package:immich_mobile/modules/home/ui/asset_grid/asset_grid_data_structure.dart';
+import 'package:immich_mobile/models/search/search_filter.model.dart';
+import 'package:immich_mobile/services/search.service.dart';
+import 'package:immich_mobile/entities/asset.entity.dart';
+import 'package:riverpod_annotation/riverpod_annotation.dart';
+
+part 'paginated_search.provider.g.dart';
+
+@riverpod
+class PaginatedSearch extends _$PaginatedSearch {
+  Future<List<Asset>?> _search(SearchFilter filter, int page) async {
+    final service = ref.read(searchServiceProvider);
+    final result = await service.search(filter, page);
+
+    return result;
+  }
+
+  @override
+  Future<List<Asset>> build() async {
+    return [];
+  }
+
+  Future<List<Asset>> getNextPage(SearchFilter filter, int nextPage) async {
+    state = const AsyncValue.loading();
+
+    final newState = await AsyncValue.guard(() async {
+      final assets = await _search(filter, nextPage);
+
+      if (assets != null) {
+        return [...?state.value, ...assets];
+      }
+    });
+
+    state = newState.valueOrNull == null
+        ? const AsyncValue.data([])
+        : AsyncValue.data(newState.value!);
+
+    return newState.valueOrNull ?? [];
+  }
+
+  clear() {
+    state = const AsyncValue.data([]);
+  }
+}
+
+@riverpod
+AsyncValue<RenderList> paginatedSearchRenderList(
+  PaginatedSearchRenderListRef ref,
+) {
+  final assets = ref.watch(paginatedSearchProvider).value;
+
+  if (assets != null) {
+    return ref.watch(
+      renderListProviderWithGrouping(
+        (assets, GroupAssetsBy.none),
+      ),
+    );
+  } else {
+    return const AsyncValue.loading();
+  }
+}