Fix legacy search page incompatible with new viewer page when opening photos not yet in filescontroller

app/lib/widget/viewer.dart

@@ -33,6 +33,7 @@ import 'package:nc_photos/set_as_handler.dart';
 import 'package:nc_photos/share_handler.dart';
 import 'package:nc_photos/snack_bar_manager.dart';
 import 'package:nc_photos/theme.dart';
+import 'package:nc_photos/widget/app_intermediate_circular_progress_indicator.dart';
 import 'package:nc_photos/widget/disposable.dart';
 import 'package:nc_photos/widget/file_content_view.dart';
 import 'package:nc_photos/widget/handler/remove_selection_handler.dart';

app/lib/widget/viewer/bloc.dart

@@ -17,7 +17,7 @@ class _Bloc extends Bloc<_Event, _State>
           fileIds: fileIds,
           index: startIndex,
           currentFile:
-              filesController.stream.value.dataMap[fileIds[startIndex]]!,
+              filesController.stream.value.dataMap[fileIds[startIndex]],
           appBarButtons: prefController.viewerAppBarButtonsValue,
           bottomAppBarButtons: prefController.viewerBottomAppBarButtonsValue,
         )) {
@@ -139,15 +139,19 @@ class _Bloc extends Bloc<_Event, _State>
     _log.info(ev);
     final fileId = state.fileIdOrders[ev.index];
     final fileState = state.fileStates[fileId] ?? _PageState.create();
+    final file = state.files[fileId];
     emit(state.copyWith(
       index: ev.index,
-      currentFile: state.files[fileId],
+      currentFile: file,
       fileStates: state.fileStates[fileId] == null
           ? state.fileStates.addedAll({fileId: fileState})
           : null,
       currentFileState: fileState,
       isInitialLoad: false,
     ));
+    if (file == null) {
+      filesController.queryByFileId([fileId]);
+    }
   }
 
   void _onRequestPage(_RequestPage ev, _Emitter emit) {

app/lib/widget/viewer/state_event.dart

@@ -35,7 +35,7 @@ class _State {
   factory _State.init({
     required List<int> fileIds,
     required int index,
-    required FileDescriptor currentFile,
+    required FileDescriptor? currentFile,
     required List<ViewerAppBarButtonType> appBarButtons,
     required List<ViewerAppBarButtonType> bottomAppBarButtons,
   }) =>

app/lib/widget/viewer/view.dart

@@ -229,7 +229,7 @@ class _PageViewState extends State<_PageView> {
         builder: (context, file) {
           if (file == null) {
             return const Center(
-              child: Text("File not found"),
+              child: AppIntermediateCircularProgressIndicator(),
             );
           } else {
             return FractionallySizedBox(