immich/mobile/lib/routing/gallery_permission_guard.dart

import 'package:auto_route/auto_route.dart';
import 'package:immich_mobile/modules/onboarding/providers/gallery_permission.provider.dart';
import 'package:immich_mobile/routing/router.dart';

class GalleryPermissionGuard extends AutoRouteGuard {
  final GalleryPermissionNotifier _permission;

  GalleryPermissionGuard(this._permission);

  @override
  void onNavigation(NavigationResolver resolver, StackRouter router) async {
    final p = _permission.hasPermission;
    if (p) {
      resolver.next(true);
    } else {
      router.replaceAll([const PermissionOnboardingRoute()]);
    }
  }
}