refactor: reduce timeline rebuilds (#19704)

* reduce timeline rebuilds

* feat: adds bottom sheet map and actions (#19692)

* adds bottom sheet map and actions

* PR feedbacks

* only reload the asset viewer if asset is changed

* styling tweak

---------

Co-authored-by: shenlong-tanwen <139912620+shalong-tanwen@users.noreply.github.com>
Co-authored-by: Alex <alex.tran1502@gmail.com>

* rename singleton and remove event prefix

---------

Co-authored-by: shenlong-tanwen <139912620+shalong-tanwen@users.noreply.github.com>
Co-authored-by: Alex <alex.tran1502@gmail.com>

mobile/lib/domain/models/asset/base_asset.model.dart

@@ -1,5 +1,5 @@
-part 'remote_asset.model.dart';
 part 'local_asset.model.dart';
+part 'remote_asset.model.dart';
 
 enum AssetType {
   // do not change this order!
@@ -48,6 +48,13 @@ sealed class BaseAsset {
     return null;
   }
 
+  bool get hasRemote =>
+      storage == AssetState.remote || storage == AssetState.merged;
+  bool get hasLocal =>
+      storage == AssetState.local || storage == AssetState.merged;
+  bool get isLocalOnly => storage == AssetState.local;
+  bool get isRemoteOnly => storage == AssetState.remote;
+
   // Overridden in subclasses
   AssetState get storage;
   String get heroTag;

mobile/lib/domain/models/asset/local_asset.model.dart

@@ -25,8 +25,6 @@ class LocalAsset extends BaseAsset {
   @override
   String get heroTag => '${id}_${remoteId ?? checksum}';
 
-  bool get hasRemote => remoteId != null;
-
   @override
   String toString() {
     return '''LocalAsset {

mobile/lib/domain/models/asset/remote_asset.model.dart

@@ -39,8 +39,6 @@ class RemoteAsset extends BaseAsset {
   @override
   String get heroTag => '${localId ?? checksum}_$id';
 
-  bool get hasLocal => localId != null;
-
   @override
   String toString() {
     return '''Asset {

mobile/lib/domain/models/setting.model.dart

@@ -6,6 +6,7 @@ enum Setting<T> {
   showStorageIndicator<bool>(StoreKey.storageIndicator, true),
   loadOriginal<bool>(StoreKey.loadOriginal, false),
   preferRemoteImage<bool>(StoreKey.preferRemoteImage, false),
+  advancedTroubleshooting<bool>(StoreKey.advancedTroubleshooting, false),
   ;
 
   const Setting(this.storeKey, this.defaultValue);

mobile/lib/domain/services/timeline.service.dart

@@ -7,6 +7,7 @@ import 'package:immich_mobile/domain/models/asset/base_asset.model.dart';
 import 'package:immich_mobile/domain/models/setting.model.dart';
 import 'package:immich_mobile/domain/models/timeline.model.dart';
 import 'package:immich_mobile/domain/services/setting.service.dart';
+import 'package:immich_mobile/domain/utils/event_stream.dart';
 import 'package:immich_mobile/infrastructure/repositories/timeline.repository.dart';
 import 'package:immich_mobile/utils/async_mutex.dart';
 
@@ -68,7 +69,7 @@ class TimelineService {
     _bucketSubscription = _bucketSource().listen((buckets) {
       _totalAssets =
           buckets.fold<int>(0, (acc, bucket) => acc + bucket.assetCount);
-      unawaited(reloadBucket());
+      unawaited(_reloadBucket());
     });
   }
 
@@ -79,8 +80,9 @@ class TimelineService {
 
   Stream<List<Bucket>> Function() get watchBuckets => _bucketSource;
 
-  Future<void> reloadBucket() => _mutex.run(() async {
+  Future<void> _reloadBucket() => _mutex.run(() async {
         _buffer = await _assetSource(_bufferOffset, _buffer.length);
+        EventStream.shared.emit(const TimelineReloadEvent());
       });
 
   Future<List<BaseAsset>> loadAssets(int index, int count) =>

mobile/lib/domain/utils/event_stream.dart

@@ -0,0 +1,48 @@
+import 'dart:async';
+
+sealed class Event {
+  const Event();
+}
+
+class TimelineReloadEvent extends Event {
+  const TimelineReloadEvent();
+}
+
+class EventStream {
+  EventStream._();
+
+  static final EventStream shared = EventStream._();
+
+  final StreamController<Event> _controller =
+      StreamController<Event>.broadcast();
+
+  void emit(Event event) {
+    _controller.add(event);
+  }
+
+  Stream<T> where<T extends Event>() {
+    if (T == Event) {
+      return _controller.stream as Stream<T>;
+    }
+    return _controller.stream.where((event) => event is T).cast<T>();
+  }
+
+  StreamSubscription<T> listen<T extends Event>(
+    void Function(T event)? onData, {
+    Function? onError,
+    void Function()? onDone,
+    bool? cancelOnError,
+  }) {
+    return where<T>().listen(
+      onData,
+      onError: onError,
+      onDone: onDone,
+      cancelOnError: cancelOnError,
+    );
+  }
+
+  /// Closes the stream controller
+  void dispose() {
+    _controller.close();
+  }
+}

mobile/lib/pages/common/tab_shell.page.dart

@@ -42,22 +42,6 @@ class TabShellPage extends ConsumerWidget {
       );
     }
 
-    void onNavigationSelected(TabsRouter router, int index) {
-      // On Photos page menu tapped
-      if (router.activeIndex == 0 && index == 0) {
-        scrollToTopNotifierProvider.scrollToTop();
-      }
-
-      // On Search page tapped
-      if (router.activeIndex == 1 && index == 1) {
-        ref.read(searchInputFocusProvider).requestFocus();
-      }
-
-      ref.read(hapticFeedbackProvider.notifier).selectionClick();
-      router.setActiveIndex(index);
-      ref.read(tabProvider.notifier).state = TabEnum.values[index];
-    }
-
     final navigationDestinations = [
       NavigationDestination(
         label: 'photos'.tr(),
@@ -110,15 +94,6 @@ class TabShellPage extends ConsumerWidget {
       ),
     ];
 
-    Widget bottomNavigationBar(TabsRouter tabsRouter) {
-      return NavigationBar(
-        selectedIndex: tabsRouter.activeIndex,
-        onDestinationSelected: (index) =>
-            onNavigationSelected(tabsRouter, index),
-        destinations: navigationDestinations,
-      );
-    }
-
     Widget navigationRail(TabsRouter tabsRouter) {
       return NavigationRail(
         destinations: navigationDestinations
@@ -131,15 +106,13 @@ class TabShellPage extends ConsumerWidget {
             )
             .toList(),
         onDestinationSelected: (index) =>
-            onNavigationSelected(tabsRouter, index),
+            _onNavigationSelected(tabsRouter, index, ref),
         selectedIndex: tabsRouter.activeIndex,
         labelType: NavigationRailLabelType.all,
         groupAlignment: 0.0,
       );
     }
 
-    final multiselectEnabled =
-        ref.watch(multiSelectProvider.select((s) => s.isEnabled));
     return AutoTabsRouter(
       routes: [
         const MainTimelineRoute(),
@@ -173,12 +146,57 @@ class TabShellPage extends ConsumerWidget {
                     ],
                   )
                 : heroedChild,
-            bottomNavigationBar: multiselectEnabled || isScreenLandscape
+            bottomNavigationBar: _BottomNavigationBar(
-                ? null
+              tabsRouter: tabsRouter,
-                : bottomNavigationBar(tabsRouter),
+              destinations: navigationDestinations,
+            ),
           ),
         );
       },
     );
   }
 }
+
+void _onNavigationSelected(TabsRouter router, int index, WidgetRef ref) {
+  // On Photos page menu tapped
+  if (router.activeIndex == 0 && index == 0) {
+    scrollToTopNotifierProvider.scrollToTop();
+  }
+
+  // On Search page tapped
+  if (router.activeIndex == 1 && index == 1) {
+    ref.read(searchInputFocusProvider).requestFocus();
+  }
+
+  ref.read(hapticFeedbackProvider.notifier).selectionClick();
+  router.setActiveIndex(index);
+  ref.read(tabProvider.notifier).state = TabEnum.values[index];
+}
+
+class _BottomNavigationBar extends ConsumerWidget {
+  const _BottomNavigationBar({
+    required this.tabsRouter,
+    required this.destinations,
+  });
+
+  final List<Widget> destinations;
+  final TabsRouter tabsRouter;
+
+  @override
+  Widget build(BuildContext context, WidgetRef ref) {
+    final isScreenLandscape = context.orientation == Orientation.landscape;
+    final isMultiselectEnabled =
+        ref.watch(multiSelectProvider.select((s) => s.isEnabled));
+
+    if (isScreenLandscape || isMultiselectEnabled) {
+      return const SizedBox.shrink();
+    }
+
+    return NavigationBar(
+      selectedIndex: tabsRouter.activeIndex,
+      onDestinationSelected: (index) =>
+          _onNavigationSelected(tabsRouter, index, ref),
+      destinations: destinations,
+    );
+  }
+}

mobile/lib/presentation/widgets/action_buttons/archive_action_button.widget.dart

@@ -5,7 +5,6 @@ import 'package:immich_mobile/constants/enums.dart';
 import 'package:immich_mobile/extensions/translate_extensions.dart';
 import 'package:immich_mobile/presentation/widgets/action_buttons/base_action_button.widget.dart';
 import 'package:immich_mobile/providers/infrastructure/action.provider.dart';
-import 'package:immich_mobile/providers/infrastructure/timeline.provider.dart';
 import 'package:immich_mobile/providers/timeline/multiselect.provider.dart';
 import 'package:immich_mobile/widgets/common/immich_toast.dart';
 
@@ -20,7 +19,6 @@ class ArchiveActionButton extends ConsumerWidget {
     }
 
     final result = await ref.read(actionProvider.notifier).archive(source);
-    await ref.read(timelineServiceProvider).reloadBucket();
     ref.read(multiSelectProvider.notifier).reset();
 
     final successMessage = 'archive_action_prompt'.t(

mobile/lib/presentation/widgets/action_buttons/delete_action_button.widget.dart

@@ -5,7 +5,6 @@ import 'package:immich_mobile/constants/enums.dart';
 import 'package:immich_mobile/extensions/translate_extensions.dart';
 import 'package:immich_mobile/presentation/widgets/action_buttons/base_action_button.widget.dart';
 import 'package:immich_mobile/providers/infrastructure/action.provider.dart';
-import 'package:immich_mobile/providers/infrastructure/timeline.provider.dart';
 import 'package:immich_mobile/providers/timeline/multiselect.provider.dart';
 import 'package:immich_mobile/widgets/common/immich_toast.dart';
 
@@ -20,7 +19,6 @@ class DeletePermanentActionButton extends ConsumerWidget {
     }
 
     final result = await ref.read(actionProvider.notifier).delete(source);
-    await ref.read(timelineServiceProvider).reloadBucket();
     ref.read(multiSelectProvider.notifier).reset();
 
     final successMessage = 'delete_action_prompt'.t(

mobile/lib/presentation/widgets/action_buttons/favorite_action_button.widget.dart

@@ -5,7 +5,6 @@ import 'package:immich_mobile/constants/enums.dart';
 import 'package:immich_mobile/extensions/translate_extensions.dart';
 import 'package:immich_mobile/presentation/widgets/action_buttons/base_action_button.widget.dart';
 import 'package:immich_mobile/providers/infrastructure/action.provider.dart';
-import 'package:immich_mobile/providers/infrastructure/timeline.provider.dart';
 import 'package:immich_mobile/providers/timeline/multiselect.provider.dart';
 import 'package:immich_mobile/widgets/common/immich_toast.dart';
 
@@ -20,7 +19,6 @@ class FavoriteActionButton extends ConsumerWidget {
     }
 
     final result = await ref.read(actionProvider.notifier).favorite(source);
-    await ref.read(timelineServiceProvider).reloadBucket();
     ref.read(multiSelectProvider.notifier).reset();
 
     final successMessage = 'favorite_action_prompt'.t(

mobile/lib/presentation/widgets/action_buttons/move_to_lock_folder_action_button.widget.dart

@@ -5,7 +5,6 @@ import 'package:immich_mobile/constants/enums.dart';
 import 'package:immich_mobile/extensions/translate_extensions.dart';
 import 'package:immich_mobile/presentation/widgets/action_buttons/base_action_button.widget.dart';
 import 'package:immich_mobile/providers/infrastructure/action.provider.dart';
-import 'package:immich_mobile/providers/infrastructure/timeline.provider.dart';
 import 'package:immich_mobile/providers/timeline/multiselect.provider.dart';
 import 'package:immich_mobile/widgets/common/immich_toast.dart';
 
@@ -21,7 +20,6 @@ class MoveToLockFolderActionButton extends ConsumerWidget {
 
     final result =
         await ref.read(actionProvider.notifier).moveToLockFolder(source);
-    await ref.read(timelineServiceProvider).reloadBucket();
     ref.read(multiSelectProvider.notifier).reset();
 
     final successMessage = 'move_to_lock_folder_action_prompt'.t(

mobile/lib/presentation/widgets/action_buttons/remove_from_lock_folder_action_button.widget.dart

@@ -5,7 +5,6 @@ import 'package:immich_mobile/constants/enums.dart';
 import 'package:immich_mobile/extensions/translate_extensions.dart';
 import 'package:immich_mobile/presentation/widgets/action_buttons/base_action_button.widget.dart';
 import 'package:immich_mobile/providers/infrastructure/action.provider.dart';
-import 'package:immich_mobile/providers/infrastructure/timeline.provider.dart';
 import 'package:immich_mobile/providers/timeline/multiselect.provider.dart';
 import 'package:immich_mobile/widgets/common/immich_toast.dart';
 
@@ -21,7 +20,6 @@ class RemoveFromLockFolderActionButton extends ConsumerWidget {
 
     final result =
         await ref.read(actionProvider.notifier).removeFromLockFolder(source);
-    await ref.read(timelineServiceProvider).reloadBucket();
     ref.read(multiSelectProvider.notifier).reset();
 
     final successMessage = 'remove_from_lock_folder_action_prompt'.t(

mobile/lib/presentation/widgets/action_buttons/trash_action_button.widget.dart

@@ -5,7 +5,6 @@ import 'package:immich_mobile/constants/enums.dart';
 import 'package:immich_mobile/extensions/translate_extensions.dart';
 import 'package:immich_mobile/presentation/widgets/action_buttons/base_action_button.widget.dart';
 import 'package:immich_mobile/providers/infrastructure/action.provider.dart';
-import 'package:immich_mobile/providers/infrastructure/timeline.provider.dart';
 import 'package:immich_mobile/providers/timeline/multiselect.provider.dart';
 import 'package:immich_mobile/widgets/common/immich_toast.dart';
 
@@ -20,7 +19,6 @@ class TrashActionButton extends ConsumerWidget {
     }
 
     final result = await ref.read(actionProvider.notifier).trash(source);
-    await ref.read(timelineServiceProvider).reloadBucket();
     ref.read(multiSelectProvider.notifier).reset();
 
     final successMessage = 'trash_action_prompt'.t(

mobile/lib/presentation/widgets/action_buttons/unarchive_action_button.widget.dart

@@ -5,7 +5,6 @@ import 'package:immich_mobile/constants/enums.dart';
 import 'package:immich_mobile/extensions/translate_extensions.dart';
 import 'package:immich_mobile/presentation/widgets/action_buttons/base_action_button.widget.dart';
 import 'package:immich_mobile/providers/infrastructure/action.provider.dart';
-import 'package:immich_mobile/providers/infrastructure/timeline.provider.dart';
 import 'package:immich_mobile/providers/timeline/multiselect.provider.dart';
 import 'package:immich_mobile/widgets/common/immich_toast.dart';
 
@@ -20,7 +19,6 @@ class UnarchiveActionButton extends ConsumerWidget {
     }
 
     final result = await ref.read(actionProvider.notifier).unArchive(source);
-    await ref.read(timelineServiceProvider).reloadBucket();
     ref.read(multiSelectProvider.notifier).reset();
 
     final successMessage = 'unarchive_action_prompt'.t(

mobile/lib/presentation/widgets/action_buttons/unfavorite_action_button.widget.dart

@@ -5,7 +5,6 @@ import 'package:immich_mobile/constants/enums.dart';
 import 'package:immich_mobile/extensions/translate_extensions.dart';
 import 'package:immich_mobile/presentation/widgets/action_buttons/base_action_button.widget.dart';
 import 'package:immich_mobile/providers/infrastructure/action.provider.dart';
-import 'package:immich_mobile/providers/infrastructure/timeline.provider.dart';
 import 'package:immich_mobile/providers/timeline/multiselect.provider.dart';
 import 'package:immich_mobile/widgets/common/immich_toast.dart';
 
@@ -20,7 +19,6 @@ class UnFavoriteActionButton extends ConsumerWidget {
     }
 
     final result = await ref.read(actionProvider.notifier).unFavorite(source);
-    await ref.read(timelineServiceProvider).reloadBucket();
     ref.read(multiSelectProvider.notifier).reset();
 
     final successMessage = 'unfavorite_action_prompt'.t(

mobile/lib/presentation/widgets/asset_viewer/asset_viewer.page.dart

@@ -4,9 +4,10 @@ import 'package:auto_route/auto_route.dart';
 import 'package:flutter/material.dart';
 import 'package:hooks_riverpod/hooks_riverpod.dart';
 import 'package:immich_mobile/domain/services/timeline.service.dart';
+import 'package:immich_mobile/domain/utils/event_stream.dart';
 import 'package:immich_mobile/extensions/build_context_extensions.dart';
 import 'package:immich_mobile/extensions/scroll_extensions.dart';
-import 'package:immich_mobile/presentation/widgets/asset_viewer/bottom_sheet.dart';
+import 'package:immich_mobile/presentation/widgets/asset_viewer/bottom_sheet.widget.dart';
 import 'package:immich_mobile/presentation/widgets/images/image_provider.dart';
 import 'package:immich_mobile/presentation/widgets/images/thumbnail.widget.dart';
 import 'package:immich_mobile/providers/infrastructure/asset_viewer/current_asset.provider.dart';
@@ -60,6 +61,7 @@ class _AssetViewerState extends ConsumerState<AssetViewer> {
   PersistentBottomSheetController? sheetCloseNotifier;
   // PhotoViewGallery takes care of disposing it's controllers
   PhotoViewControllerBase? viewController;
+  StreamSubscription? _reloadSubscription;
 
   late Platform platform;
   late PhotoViewControllerValue initialPhotoViewState;
@@ -88,6 +90,8 @@ class _AssetViewerState extends ConsumerState<AssetViewer> {
     WidgetsBinding.instance.addPostFrameCallback((_) {
       _onAssetChanged(widget.initialIndex);
     });
+    _reloadSubscription =
+        EventStream.shared.listen<TimelineReloadEvent>(_onTimelineReload);
   }
 
   @override
@@ -95,9 +99,31 @@ class _AssetViewerState extends ConsumerState<AssetViewer> {
     pageController.dispose();
     bottomSheetController.dispose();
     _cancelTimers();
+    _reloadSubscription?.cancel();
     super.dispose();
   }
 
+  void _onTimelineReload(_) {
+    setState(() {
+      totalAssets = ref.read(timelineServiceProvider).totalAssets;
+      if (totalAssets == 0) {
+        context.maybePop();
+        return;
+      }
+
+      final index = pageController.page?.round() ?? 0;
+      final newAsset = ref.read(timelineServiceProvider).getAsset(index);
+      final currentAsset = ref.read(currentAssetNotifier);
+      // Do not reload / close the bottom sheet if the asset has not changed
+      if (newAsset.heroTag == currentAsset.heroTag) {
+        return;
+      }
+
+      _onAssetChanged(pageController.page!.round());
+      sheetCloseNotifier?.close();
+    });
+  }
+
   Color get backgroundColor {
     if (showingBottomSheet && !context.isDarkTheme) {
       return Colors.white;
@@ -186,11 +212,12 @@ class _AssetViewerState extends ConsumerState<AssetViewer> {
   void _onDragStart(
     _,
     DragStartDetails details,
-    PhotoViewControllerValue value,
+    PhotoViewControllerBase controller,
     PhotoViewScaleStateController scaleStateController,
   ) {
+    viewController = controller;
     dragDownPosition = details.localPosition;
-    initialPhotoViewState = value;
+    initialPhotoViewState = controller.value;
     final isZoomed =
         scaleStateController.scaleState == PhotoViewScaleState.zoomedIn ||
             scaleStateController.scaleState == PhotoViewScaleState.covering;
@@ -277,7 +304,7 @@ class _AssetViewerState extends ConsumerState<AssetViewer> {
   void _openBottomSheet(BuildContext ctx) {
     setState(() {
       initialScale = viewController?.scale;
-      viewController?.animateMultiple(scale: _getScaleForBottomSheet);
+      viewController?.updateMultiple(scale: _getScaleForBottomSheet);
       showingBottomSheet = true;
       previousExtent = _kBottomSheetMinimumExtent;
       sheetCloseNotifier = showBottomSheet(
@@ -308,10 +335,8 @@ class _AssetViewerState extends ConsumerState<AssetViewer> {
     setState(() {
       showingBottomSheet = false;
       sheetCloseNotifier = null;
-      viewController?.animateMultiple(
+      viewController?.animateMultiple(position: Offset.zero);
-        position: Offset.zero,
+      viewController?.updateMultiple(scale: initialScale);
-        scale: initialScale,
-      );
       shouldPopOnDrag = false;
       hasDraggedDown = null;
     });
@@ -420,10 +445,10 @@ class _AssetViewerState extends ConsumerState<AssetViewer> {
   PhotoViewGalleryPageOptions _assetBuilder(BuildContext ctx, int index) {
     final asset = ref.read(timelineServiceProvider).getAsset(index);
     final size = Size(ctx.width, ctx.height);
-    final imageProvider = getFullImageProvider(asset, size: size);
 
     return PhotoViewGalleryPageOptions(
-      imageProvider: imageProvider,
+      key: ValueKey(asset.heroTag),
+      imageProvider: getFullImageProvider(asset, size: size),
       heroAttributes: PhotoViewHeroAttributes(tag: asset.heroTag),
       filterQuality: FilterQuality.high,
       tightMode: true,
@@ -446,12 +471,18 @@ class _AssetViewerState extends ConsumerState<AssetViewer> {
     );
   }
 
+  void _onPop<T>(bool didPop, T? result) {
+    ref.read(currentAssetNotifier.notifier).dispose();
+  }
+
   @override
   Widget build(BuildContext context) {
     // Currently it is not possible to scroll the asset when the bottom sheet is open all the way.
     // Issue: https://github.com/flutter/flutter/issues/109037
     // TODO: Add a custom scrum builder once the fix lands on stable
-    return Scaffold(
+    return PopScope(
+      onPopInvokedWithResult: _onPop,
+      child: Scaffold(
         backgroundColor: Colors.black.withAlpha(backgroundOpacity),
         body: PhotoViewGallery.builder(
           gaplessPlayback: true,
@@ -468,6 +499,7 @@ class _AssetViewerState extends ConsumerState<AssetViewer> {
           backgroundDecoration: BoxDecoration(color: backgroundColor),
           enablePanAlways: true,
         ),
+      ),
     );
   }
 }

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

@@ -1,30 +1,78 @@
 import 'package:easy_localization/easy_localization.dart';
 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/exif.model.dart';
 import 'package:immich_mobile/extensions/build_context_extensions.dart';
 import 'package:immich_mobile/extensions/translate_extensions.dart';
+import 'package:immich_mobile/presentation/widgets/action_buttons/archive_action_button.widget.dart';
+import 'package:immich_mobile/presentation/widgets/action_buttons/delete_action_button.widget.dart';
+import 'package:immich_mobile/presentation/widgets/action_buttons/delete_local_action_button.widget.dart';
+import 'package:immich_mobile/presentation/widgets/action_buttons/download_action_button.widget.dart';
+import 'package:immich_mobile/presentation/widgets/action_buttons/favorite_action_button.widget.dart';
+import 'package:immich_mobile/presentation/widgets/action_buttons/move_to_lock_folder_action_button.widget.dart';
+import 'package:immich_mobile/presentation/widgets/action_buttons/share_action_button.widget.dart';
+import 'package:immich_mobile/presentation/widgets/action_buttons/share_link_action_button.widget.dart';
+import 'package:immich_mobile/presentation/widgets/action_buttons/trash_action_button.widget.dart';
+import 'package:immich_mobile/presentation/widgets/action_buttons/upload_action_button.widget.dart';
+import 'package:immich_mobile/presentation/widgets/asset_viewer/bottom_sheet/location_details.widget.dart';
 import 'package:immich_mobile/presentation/widgets/bottom_app_bar/base_bottom_sheet.widget.dart';
 import 'package:immich_mobile/providers/infrastructure/asset_viewer/current_asset.provider.dart';
+import 'package:immich_mobile/providers/server_info.provider.dart';
 import 'package:immich_mobile/utils/bytes_units.dart';
 
 const _kSeparator = '  •  ';
 
-class AssetDetailBottomSheet extends BaseBottomSheet {
+class AssetDetailBottomSheet extends ConsumerWidget {
+  final DraggableScrollableController? controller;
+  final double initialChildSize;
+
   const AssetDetailBottomSheet({
-    super.controller,
+    this.controller,
-    super.initialChildSize,
+    this.initialChildSize = 0.35,
     super.key,
-  }) : super(
+  });
-          actions: const [],
+
+  @override
+  Widget build(BuildContext context, WidgetRef ref) {
+    final asset = ref.watch(currentAssetNotifier);
+    final isTrashEnable = ref.watch(
+      serverInfoProvider.select((state) => state.serverFeatures.trash),
+    );
+
+    final actions = <Widget>[
+      const ShareActionButton(),
+      if (asset.hasRemote) ...[
+        const ShareLinkActionButton(source: ActionSource.viewer),
+        const ArchiveActionButton(source: ActionSource.viewer),
+        const FavoriteActionButton(source: ActionSource.viewer),
+        if (!asset.hasLocal) const DownloadActionButton(),
+        isTrashEnable
+            ? const TrashActionButton(source: ActionSource.viewer)
+            : const DeletePermanentActionButton(source: ActionSource.viewer),
+        const MoveToLockFolderActionButton(
+          source: ActionSource.viewer,
+        ),
+      ],
+      if (asset.storage == AssetState.local) ...[
+        const DeleteLocalActionButton(),
+        const UploadActionButton(),
+      ],
+    ];
+
+    return BaseBottomSheet(
+      actions: actions,
       slivers: const [_AssetDetailBottomSheet()],
+      controller: controller,
+      initialChildSize: initialChildSize,
       minChildSize: 0.1,
       maxChildSize: 1.0,
       expand: false,
       shouldCloseOnMinExtent: false,
       resizeOnScroll: false,
     );
+  }
 }
 
 class _AssetDetailBottomSheet extends ConsumerWidget {
@@ -96,16 +144,16 @@ class _AssetDetailBottomSheet extends ConsumerWidget {
         // Asset Date and Time
         _SheetTile(
           title: _getDateTime(context, asset),
-          titleStyle: context.textTheme.bodyLarge
+          titleStyle: context.textTheme.bodyLarge?.copyWith(
-              ?.copyWith(fontWeight: FontWeight.w600),
+            fontWeight: FontWeight.w500,
+            fontSize: 16,
           ),
+        ),
+        const SheetLocationDetails(),
         // Details header
         _SheetTile(
           title: 'exif_bottom_sheet_details'.t(context: context),
-          titleStyle: context.textTheme.labelLarge?.copyWith(
+          titleStyle: context.textTheme.labelLarge,
-            color: context.textTheme.labelLarge?.color,
-            fontWeight: FontWeight.w600,
-          ),
         ),
         // File info
         _SheetTile(

mobile/lib/presentation/widgets/asset_viewer/bottom_sheet/location_details.widget.dart

@@ -0,0 +1,124 @@
+import 'package:flutter/material.dart';
+import 'package:hooks_riverpod/hooks_riverpod.dart';
+import 'package:immich_mobile/domain/models/asset/base_asset.model.dart';
+import 'package:immich_mobile/domain/models/exif.model.dart';
+import 'package:immich_mobile/extensions/build_context_extensions.dart';
+import 'package:immich_mobile/extensions/translate_extensions.dart';
+import 'package:immich_mobile/providers/infrastructure/asset_viewer/current_asset.provider.dart';
+import 'package:immich_mobile/widgets/asset_viewer/detail_panel/exif_map.dart';
+import 'package:maplibre_gl/maplibre_gl.dart';
+
+class SheetLocationDetails extends ConsumerStatefulWidget {
+  const SheetLocationDetails({super.key});
+
+  @override
+  ConsumerState createState() => _SheetLocationDetailsState();
+}
+
+class _SheetLocationDetailsState extends ConsumerState<SheetLocationDetails> {
+  late BaseAsset asset;
+  ExifInfo? exifInfo;
+  MapLibreMapController? _mapController;
+
+  String? _getLocationName(ExifInfo? exifInfo) {
+    if (exifInfo == null) {
+      return null;
+    }
+
+    final cityName = exifInfo.city;
+    final stateName = exifInfo.state;
+
+    if (cityName != null && stateName != null) {
+      return "$cityName, $stateName";
+    }
+    return null;
+  }
+
+  void _onMapCreated(MapLibreMapController controller) {
+    _mapController = controller;
+  }
+
+  void _onExifChanged(
+    AsyncValue<ExifInfo?>? previous,
+    AsyncValue<ExifInfo?> current,
+  ) {
+    asset = ref.read(currentAssetNotifier);
+    setState(() {
+      exifInfo = current.valueOrNull;
+      final hasCoordinates = exifInfo?.hasCoordinates ?? false;
+      if (exifInfo != null && hasCoordinates) {
+        _mapController?.moveCamera(
+          CameraUpdate.newLatLng(
+            LatLng(exifInfo!.latitude!, exifInfo!.longitude!),
+          ),
+        );
+      }
+    });
+  }
+
+  @override
+  void initState() {
+    super.initState();
+    ref.listenManual(
+      currentAssetExifProvider,
+      _onExifChanged,
+      fireImmediately: true,
+    );
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    final hasCoordinates = exifInfo?.hasCoordinates ?? false;
+
+    // Guard no lat/lng
+    if (!hasCoordinates ||
+        (asset is LocalAsset && !(asset as LocalAsset).hasRemote)) {
+      return const SizedBox.shrink();
+    }
+
+    final remoteId = asset is LocalAsset
+        ? (asset as LocalAsset).remoteId
+        : (asset as RemoteAsset).id;
+    final locationName = _getLocationName(exifInfo);
+    final coordinates =
+        "${exifInfo!.latitude!.toStringAsFixed(4)}, ${exifInfo!.longitude!.toStringAsFixed(4)}";
+
+    return Padding(
+      padding: const EdgeInsets.all(16.0),
+      child: Column(
+        crossAxisAlignment: CrossAxisAlignment.start,
+        children: [
+          Padding(
+            padding: const EdgeInsets.only(bottom: 16),
+            child: Text(
+              "exif_bottom_sheet_location".t(context: context),
+              style: context.textTheme.labelLarge,
+            ),
+          ),
+          ExifMap(
+            exifInfo: exifInfo!,
+            markerId: remoteId,
+            onMapCreated: _onMapCreated,
+          ),
+          const SizedBox(height: 15),
+          if (locationName != null)
+            Padding(
+              padding: const EdgeInsets.only(bottom: 4.0),
+              child: Text(
+                locationName,
+                style: context.textTheme.bodyLarge?.copyWith(
+                  fontWeight: FontWeight.w500,
+                ),
+              ),
+            ),
+          Text(
+            coordinates,
+            style: context.textTheme.labelLarge?.copyWith(
+              color: context.textTheme.labelLarge?.color?.withAlpha(150),
+            ),
+          ),
+        ],
+      ),
+    );
+  }
+}

mobile/lib/presentation/widgets/bottom_app_bar/base_bottom_sheet.widget.dart

@@ -89,17 +89,17 @@ class _BaseDraggableScrollableSheetState
                     const SizedBox(height: 14),
                     if (widget.actions.isNotEmpty)
                       SizedBox(
-                        height: 80,
+                        height: 115,
                         child: ListView(
                           shrinkWrap: true,
                           scrollDirection: Axis.horizontal,
                           children: widget.actions,
                         ),
                       ),
-                    if (widget.actions.isNotEmpty) const SizedBox(height: 14),
+                    if (widget.actions.isNotEmpty) ...[
-                    if (widget.actions.isNotEmpty)
+                      const Divider(indent: 16, endIndent: 16),
-                      const Divider(indent: 20, endIndent: 20),
+                      const SizedBox(height: 16),
-                    if (widget.actions.isNotEmpty) const SizedBox(height: 14),
+                    ],
                   ],
                 ),
               ),

mobile/lib/presentation/widgets/bottom_app_bar/home_bottom_app_bar.widget.dart

@@ -12,7 +12,7 @@ import 'package:immich_mobile/presentation/widgets/action_buttons/move_to_lock_f
 import 'package:immich_mobile/presentation/widgets/action_buttons/share_action_button.widget.dart';
 import 'package:immich_mobile/presentation/widgets/action_buttons/share_link_action_button.widget.dart';
 import 'package:immich_mobile/presentation/widgets/action_buttons/stack_action_button.widget.dart';
-import 'package:immich_mobile/presentation/widgets/action_buttons/trash_action_buton.widget.dart';
+import 'package:immich_mobile/presentation/widgets/action_buttons/trash_action_button.widget.dart';
 import 'package:immich_mobile/presentation/widgets/action_buttons/upload_action_button.widget.dart';
 import 'package:immich_mobile/presentation/widgets/bottom_app_bar/base_bottom_sheet.widget.dart';
 import 'package:immich_mobile/providers/server_info.provider.dart';

mobile/lib/presentation/widgets/timeline/timeline.widget.dart

@@ -1,3 +1,4 @@
+import 'dart:async';
 import 'dart:math' as math;
 
 import 'package:collection/collection.dart';
@@ -6,6 +7,7 @@ import 'package:flutter/material.dart';
 import 'package:flutter/rendering.dart';
 import 'package:hooks_riverpod/hooks_riverpod.dart';
 import 'package:immich_mobile/domain/models/setting.model.dart';
+import 'package:immich_mobile/domain/utils/event_stream.dart';
 import 'package:immich_mobile/extensions/asyncvalue_extensions.dart';
 import 'package:immich_mobile/extensions/build_context_extensions.dart';
 import 'package:immich_mobile/presentation/widgets/bottom_app_bar/home_bottom_app_bar.widget.dart';
@@ -43,31 +45,36 @@ class Timeline extends StatelessWidget {
   }
 }
 
-class _SliverTimeline extends StatefulWidget {
+class _SliverTimeline extends ConsumerStatefulWidget {
   const _SliverTimeline();
 
   @override
-  State createState() => _SliverTimelineState();
+  ConsumerState createState() => _SliverTimelineState();
 }
 
-class _SliverTimelineState extends State<_SliverTimeline> {
+class _SliverTimelineState extends ConsumerState<_SliverTimeline> {
   final _scrollController = ScrollController();
+  StreamSubscription? _reloadSubscription;
+
+  @override
+  void initState() {
+    super.initState();
+    _reloadSubscription =
+        EventStream.shared.listen<TimelineReloadEvent>((_) => setState(() {}));
+  }
 
   @override
   void dispose() {
     _scrollController.dispose();
+    _reloadSubscription?.cancel();
     super.dispose();
   }
 
   @override
   Widget build(BuildContext _) {
-    return Consumer(
-      builder: (context, ref, child) {
     final asyncSegments = ref.watch(timelineSegmentProvider);
     final maxHeight =
         ref.watch(timelineArgsProvider.select((args) => args.maxHeight));
-        final isMultiSelectEnabled =
-            ref.watch(multiSelectProvider.select((s) => s.isEnabled));
     return asyncSegments.widgetWhen(
       onData: (segments) {
         final childCount = (segments.lastOrNull?.lastIndex ?? -1) + 1;
@@ -83,21 +90,16 @@ class _SliverTimelineState extends State<_SliverTimeline> {
                 layoutSegments: segments,
                 timelineHeight: maxHeight,
                 topPadding: totalAppBarHeight + 10,
-                    bottomPadding:
+                bottomPadding: context.padding.bottom + scrubberBottomPadding,
-                        context.padding.bottom + scrubberBottomPadding,
                 child: CustomScrollView(
                   primary: true,
                   cacheExtent: maxHeight * 2,
                   slivers: [
-                        SliverAnimatedOpacity(
+                    const ImmichSliverAppBar(
-                          duration: Durations.medium1,
-                          opacity: isMultiSelectEnabled ? 0 : 1,
-                          sliver: const ImmichSliverAppBar(
                       floating: true,
                       pinned: false,
                       snap: false,
                     ),
-                        ),
                     _SliverSegmentedList(
                       segments: segments,
                       delegate: SliverChildBuilderDelegate(
@@ -121,18 +123,42 @@ class _SliverTimelineState extends State<_SliverTimeline> {
                   ],
                 ),
               ),
-                  if (isMultiSelectEnabled) ...[
+              Consumer(
-                    const Positioned(
+                builder: (_, consumerRef, child) {
+                  final isMultiSelectEnabled = consumerRef.watch(
+                    multiSelectProvider.select(
+                      (s) => s.isEnabled,
+                    ),
+                  );
+
+                  if (isMultiSelectEnabled) {
+                    return child!;
+                  }
+                  return const SizedBox.shrink();
+                },
+                child: const Positioned(
                   top: 60,
                   left: 25,
                   child: _MultiSelectStatusButton(),
                 ),
-                    const HomeBottomAppBar(),
+              ),
-                  ],
+              Consumer(
-                ],
+                builder: (_, consumerRef, child) {
+                  final isMultiSelectEnabled = consumerRef.watch(
+                    multiSelectProvider.select(
+                      (s) => s.isEnabled,
                     ),
                   );
+
+                  if (isMultiSelectEnabled) {
+                    return child!;
+                  }
+                  return const SizedBox.shrink();
                 },
+                child: const HomeBottomAppBar(),
+              ),
+            ],
+          ),
         );
       },
     );

mobile/lib/providers/infrastructure/action.provider.dart

@@ -1,6 +1,7 @@
 import 'package:flutter/material.dart';
 import 'package:immich_mobile/constants/enums.dart';
 import 'package:immich_mobile/domain/models/asset/base_asset.model.dart';
+import 'package:immich_mobile/providers/infrastructure/asset_viewer/current_asset.provider.dart';
 import 'package:immich_mobile/providers/timeline/multiselect.provider.dart';
 import 'package:immich_mobile/providers/user.provider.dart';
 import 'package:immich_mobile/services/action.service.dart';
@@ -55,7 +56,7 @@ class ActionNotifier extends Notifier<void> {
     final Set<BaseAsset> assets = switch (source) {
       ActionSource.timeline =>
         ref.read(multiSelectProvider.select((s) => s.selectedAssets)),
-      ActionSource.viewer => {},
+      ActionSource.viewer => {ref.read(currentAssetNotifier)},
     };
 
     return switch (T) {

mobile/lib/providers/infrastructure/asset_viewer/current_asset.provider.dart

@@ -3,9 +3,13 @@ import 'package:immich_mobile/domain/models/asset/base_asset.model.dart';
 import 'package:immich_mobile/providers/infrastructure/asset.provider.dart';
 
 final currentAssetNotifier =
-    NotifierProvider<CurrentAssetNotifier, BaseAsset>(CurrentAssetNotifier.new);
+    AutoDisposeNotifierProvider<CurrentAssetNotifier, BaseAsset>(
+  CurrentAssetNotifier.new,
+);
+
+class CurrentAssetNotifier extends AutoDisposeNotifier<BaseAsset> {
+  KeepAliveLink? _keepAliveLink;
 
-class CurrentAssetNotifier extends Notifier<BaseAsset> {
   @override
   BaseAsset build() {
     throw UnimplementedError(
@@ -14,11 +18,17 @@ class CurrentAssetNotifier extends Notifier<BaseAsset> {
   }
 
   void setAsset(BaseAsset asset) {
+    _keepAliveLink?.close();
     state = asset;
+    _keepAliveLink = ref.keepAlive();
+  }
+
+  void dispose() {
+    _keepAliveLink?.close();
   }
 }
 
-final currentAssetExifProvider = FutureProvider(
+final currentAssetExifProvider = FutureProvider.autoDispose(
   (ref) {
     final currentAsset = ref.watch(currentAssetNotifier);
     return ref.watch(assetServiceProvider).getExif(currentAsset);

mobile/lib/widgets/asset_viewer/detail_panel/exif_map.dart

@@ -9,11 +9,13 @@ import 'package:url_launcher/url_launcher.dart';
 class ExifMap extends StatelessWidget {
   final ExifInfo exifInfo;
   final String? markerId;
+  final MapCreatedCallback? onMapCreated;
 
   const ExifMap({
     super.key,
     required this.exifInfo,
     this.markerId = 'marker',
+    this.onMapCreated,
   });
 
   @override
@@ -82,6 +84,7 @@ class ExifMap extends StatelessWidget {
             debugPrint('Opening Map Uri: $uri');
             launchUrl(uri);
           },
+          onCreated: onMapCreated,
         );
       },
     );

mobile/lib/widgets/common/immich_sliver_app_bar.dart

@@ -10,6 +10,7 @@ import 'package:immich_mobile/providers/background_sync.provider.dart';
 import 'package:immich_mobile/providers/backup/backup.provider.dart';
 import 'package:immich_mobile/providers/cast.provider.dart';
 import 'package:immich_mobile/providers/server_info.provider.dart';
+import 'package:immich_mobile/providers/timeline/multiselect.provider.dart';
 import 'package:immich_mobile/providers/user.provider.dart';
 import 'package:immich_mobile/routing/router.dart';
 import 'package:immich_mobile/widgets/asset_viewer/cast_dialog.dart';
@@ -39,8 +40,13 @@ class ImmichSliverAppBar extends ConsumerWidget {
   @override
   Widget build(BuildContext context, WidgetRef ref) {
     final isCasting = ref.watch(castProvider.select((c) => c.isCasting));
+    final isMultiSelectEnabled =
+        ref.watch(multiSelectProvider.select((s) => s.isEnabled));
 
-    return SliverAppBar(
+    return SliverAnimatedOpacity(
+      duration: Durations.medium1,
+      opacity: isMultiSelectEnabled ? 0 : 1,
+      sliver: SliverAppBar(
         floating: floating,
         pinned: pinned,
         snap: snap,
@@ -97,6 +103,7 @@ class ImmichSliverAppBar extends ConsumerWidget {
             child: _ProfileIndicator(),
           ),
         ],
+      ),
     );
   }
 }

mobile/lib/widgets/map/map_thumbnail.dart

@@ -4,6 +4,7 @@ import 'package:flutter/material.dart';
 import 'package:flutter_hooks/flutter_hooks.dart';
 import 'package:hooks_riverpod/hooks_riverpod.dart';
 import 'package:immich_mobile/extensions/asyncvalue_extensions.dart';
+import 'package:immich_mobile/extensions/build_context_extensions.dart';
 import 'package:immich_mobile/extensions/maplibrecontroller_extensions.dart';
 import 'package:immich_mobile/widgets/map/map_theme_override.dart';
 import 'package:immich_mobile/widgets/map/positioned_asset_marker_icon.dart';
@@ -24,6 +25,7 @@ class MapThumbnail extends HookConsumerWidget {
   final double width;
   final ThemeMode? themeMode;
   final bool showAttribution;
+  final MapCreatedCallback? onCreated;
 
   const MapThumbnail({
     super.key,
@@ -36,16 +38,19 @@ class MapThumbnail extends HookConsumerWidget {
     this.showMarkerPin = false,
     this.themeMode,
     this.showAttribution = true,
+    this.onCreated,
   });
 
   @override
   Widget build(BuildContext context, WidgetRef ref) {
     final offsettedCentre = LatLng(centre.latitude + 0.002, centre.longitude);
     final controller = useRef<MapLibreMapController?>(null);
+    final styleLoaded = useState(false);
     final position = useValueNotifier<Point<num>?>(null);
 
     Future<void> onMapCreated(MapLibreMapController mapController) async {
       controller.value = mapController;
+      styleLoaded.value = false;
       if (assetMarkerRemoteId != null) {
         // The iOS impl returns wrong toScreenLocation without the delay
         Future.delayed(
@@ -54,17 +59,26 @@ class MapThumbnail extends HookConsumerWidget {
               position.value = await mapController.toScreenLocation(centre),
         );
       }
+      onCreated?.call(mapController);
     }
 
     Future<void> onStyleLoaded() async {
       if (showMarkerPin && controller.value != null) {
         await controller.value?.addMarkerAtLatLng(centre);
       }
+      styleLoaded.value = true;
     }
 
     return MapThemeOverride(
       themeMode: themeMode,
-      mapBuilder: (style) => SizedBox(
+      mapBuilder: (style) => AnimatedContainer(
+        duration: Durations.medium2,
+        curve: Curves.easeOut,
+        foregroundDecoration: BoxDecoration(
+          color: context.colorScheme.inverseSurface
+              .withAlpha(styleLoaded.value ? 0 : 200),
+          borderRadius: const BorderRadius.all(Radius.circular(15)),
+        ),
         height: height,
         width: width,
         child: ClipRRect(

mobile/lib/widgets/photo_view/photo_view.dart

@@ -660,7 +660,7 @@ typedef PhotoViewImageTapDownCallback = Function(
 typedef PhotoViewImageDragStartCallback = Function(
   BuildContext context,
   DragStartDetails details,
-  PhotoViewControllerValue controllerValue,
+  PhotoViewControllerBase controllerValue,
   PhotoViewScaleStateController scaleStateController,
 );
 

mobile/lib/widgets/photo_view/photo_view_gallery.dart

@@ -271,7 +271,7 @@ class _PhotoViewGalleryState extends State<PhotoViewGallery> {
 
     final PhotoView photoView = isCustomChild
         ? PhotoView.customChild(
-            key: ObjectKey(index),
+            key: pageOption.key ?? ObjectKey(index),
             childSize: pageOption.childSize,
             backgroundDecoration: widget.backgroundDecoration,
             wantKeepAlive: widget.wantKeepAlive,
@@ -304,7 +304,7 @@ class _PhotoViewGalleryState extends State<PhotoViewGallery> {
             child: pageOption.child,
           )
         : PhotoView(
-            key: ObjectKey(index),
+            key: pageOption.key ?? ObjectKey(index),
             index: index,
             imageProvider: pageOption.imageProvider,
             loadingBuilder: widget.loadingBuilder,
@@ -363,7 +363,7 @@ class _PhotoViewGalleryState extends State<PhotoViewGallery> {
 ///
 class PhotoViewGalleryPageOptions {
   PhotoViewGalleryPageOptions({
-    Key? key,
+    this.key,
     required this.imageProvider,
     this.heroAttributes,
     this.semanticLabel,
@@ -392,6 +392,7 @@ class PhotoViewGalleryPageOptions {
         assert(imageProvider != null);
 
   const PhotoViewGalleryPageOptions.customChild({
+    this.key,
     required this.child,
     this.childSize,
     this.semanticLabel,
@@ -418,6 +419,8 @@ class PhotoViewGalleryPageOptions {
   })  : errorBuilder = null,
         imageProvider = null;
 
+  final Key? key;
+
   /// Mirror to [PhotoView.imageProvider]
   final ImageProvider? imageProvider;
 

mobile/lib/widgets/photo_view/src/core/photo_view_core.dart

@@ -416,7 +416,7 @@ class PhotoViewCoreState extends State<PhotoViewCore>
                 ? (details) => widget.onDragStart!(
                       context,
                       details,
-                      widget.controller.value,
+                      widget.controller,
                       widget.scaleStateController,
                     )
                 : null,