feat: scroll to top & view in timeline (#20274)

* feat: scroll to top & view in timeline

* use EventStream

* refactor: event invocation and listerner

* fix: correct parent routing

mobile/lib/presentation/widgets/asset_viewer/top_app_bar.widget.dart

@@ -3,6 +3,7 @@ import 'package:flutter/material.dart';
 import 'package:hooks_riverpod/hooks_riverpod.dart';
 import 'package:immich_mobile/constants/enums.dart';
 import 'package:immich_mobile/domain/models/asset/base_asset.model.dart';
+import 'package:immich_mobile/domain/models/timeline.model.dart';
 import 'package:immich_mobile/domain/utils/event_stream.dart';
 import 'package:immich_mobile/extensions/build_context_extensions.dart';
 import 'package:immich_mobile/presentation/widgets/action_buttons/cast_action_button.widget.dart';
@@ -15,6 +16,7 @@ import 'package:immich_mobile/providers/infrastructure/asset_viewer/current_asse
 import 'package:immich_mobile/providers/routes.provider.dart';
 import 'package:immich_mobile/providers/user.provider.dart';
 import 'package:immich_mobile/providers/websocket.provider.dart';
+import 'package:immich_mobile/routing/router.dart';
 
 class ViewerTopAppBar extends ConsumerWidget implements PreferredSizeWidget {
   const ViewerTopAppBar({super.key});
@@ -30,6 +32,9 @@ class ViewerTopAppBar extends ConsumerWidget implements PreferredSizeWidget {
     final isOwner = asset is RemoteAsset && asset.ownerId == user?.id;
     final isInLockedView = ref.watch(inLockedViewProvider);
 
+    final previousRouteName = ref.watch(previousRouteNameProvider);
+    final showViewInTimelineButton = previousRouteName != TabShellRoute.name && previousRouteName != null;
+
     final isShowingSheet = ref.watch(assetViewerProvider.select((state) => state.showingBottomSheet));
     int opacity = ref.watch(
       assetViewerProvider.select((state) => state.backgroundOpacity),
@@ -50,6 +55,16 @@ class ViewerTopAppBar extends ConsumerWidget implements PreferredSizeWidget {
         const CastActionButton(
           menuItem: true,
         ),
+      if (showViewInTimelineButton)
+        IconButton(
+          onPressed: () async {
+            await context.maybePop();
+            await context.navigateTo(const TabShellRoute(children: [MainTimelineRoute()]));
+            EventStream.shared.emit(ScrollToDateEvent(asset.createdAt));
+          },
+          icon: const Icon(Icons.image_search),
+          tooltip: 'view_in_timeline',
+        ),
       if (asset.hasRemote && isOwner && !asset.isFavorite)
         const FavoriteActionButton(source: ActionSource.viewer, menuItem: true),
       if (asset.hasRemote && isOwner && asset.isFavorite)