refactor(web): stack-related service and actions

i18n/en.json

@@ -33,7 +33,7 @@
   "add_to_albums": "Add to albums",
   "add_to_albums_count": "Add to albums ({count})",
   "add_to_bottom_bar": "Add to",
-  "add_upload_to_stack": "Add upload to stack",
+  "add_upload_to_stack": "Upload and {isStack, select, true {add to stack} other {create stack}}",
   "add_url": "Add URL",
   "added_to_archive": "Added to archive",
   "added_to_favorites": "Added to favorites",
@@ -1733,6 +1733,7 @@
   "removed_from_archive": "Removed from archive",
   "removed_from_favorites": "Removed from favorites",
   "removed_from_favorites_count": "{count, plural, other {Removed #}} from favorites",
+  "removed_from_stack": "Removed asset from stack",
   "removed_memory": "Removed memory",
   "removed_tagged_assets": "Removed tag from {count, plural, one {# asset} other {# assets}}",
   "rename": "Rename",
@@ -2008,6 +2009,7 @@
   "source": "Source",
   "stack": "Stack",
   "stack_action_prompt": "{count} stacked",
+  "stack_created": "Stack created",
   "stack_duplicates": "Stack duplicates",
   "stack_selected_photos": "Stack selected photos",
   "stacked_assets_count": "Stacked {count, plural, one {# asset} other {# assets}}",

web/src/lib/components/asset-viewer/AssetViewer.svelte

@@ -102,7 +102,7 @@
   const stackSelectedThumbnailSize = 65;
 
   let previewStackedAsset: AssetResponseDto | undefined = $state();
-  let stack: StackResponseDto | null = $state(null);
+  let stack: StackResponseDto | undefined = $state();
 
   const asset = $derived(previewStackedAsset ?? cursor.current);
   const nextAsset = $derived(cursor.nextAsset);
@@ -127,7 +127,7 @@
     }
 
     if (!stack?.assets.some(({ id }) => id === asset.id)) {
-      stack = null;
+      stack = undefined;
     }
   };
 
@@ -149,6 +149,22 @@
     }
   };
 
+  const onStackCreate = (createdStack: StackResponseDto) => {
+    if (createdStack.assets.map((a) => a.id).includes(asset.id)) {
+      stack = createdStack;
+    }
+  };
+
+  const onStackUpdate = (updatedStack: StackResponseDto) => {
+    if (stack?.id === updatedStack.id) {
+      stack = updatedStack;
+      if (!stack.assets.map((a) => a.id).includes(asset.id)) {
+        // current asset was removed from stack, go to primary
+        cursor.current = stack.assets[0];
+      }
+    }
+  };
+
   onMount(() => {
     syncAssetViewerOpenClass(true);
     const slideshowStateUnsubscribe = slideshowState.subscribe((value) => {
@@ -319,18 +335,6 @@
         eventManager.emit('AssetsDelete', [asset.id]);
         break;
       }
-      case AssetAction.REMOVE_ASSET_FROM_STACK: {
-        stack = action.stack;
-        if (stack) {
-          cursor.current = stack.assets[0];
-        }
-        break;
-      }
-      case AssetAction.STACK:
-      case AssetAction.SET_STACK_PRIMARY_ASSET: {
-        stack = action.stack;
-        break;
-      }
       case AssetAction.SET_PERSON_FEATURED_PHOTO: {
         const assetInfo = await getAssetInfo({ id: asset.id });
         cursor.current = { ...asset, people: assetInfo.people };
@@ -347,10 +351,6 @@
         };
         break;
       }
-      case AssetAction.UNSTACK: {
-        closeViewer();
-        break;
-      }
       // no default
     }
 
@@ -475,7 +475,7 @@
 </script>
 
 <CommandPaletteDefaultProvider name={$t('assets')} actions={[Tag, TagPeople]} />
-<OnEvents {onAssetUpdate} />
+<OnEvents {onAssetUpdate} {onStackCreate} onStackDelete={() => closeViewer()} {onStackUpdate} />
 
 <svelte:document
   bind:fullscreenElement

web/src/lib/components/asset-viewer/AssetViewerNavBar.svelte

@@ -1,17 +1,12 @@
 <script lang="ts">
   import ActionMenuItem from '$lib/components/ActionMenuItem.svelte';
   import type { OnAction, PreAction } from '$lib/components/asset-viewer/actions/action';
-  import AddToStackAction from '$lib/components/asset-viewer/actions/AddToStackAction.svelte';
   import ArchiveAction from '$lib/components/asset-viewer/actions/ArchiveAction.svelte';
   import DeleteAction from '$lib/components/asset-viewer/actions/DeleteAction.svelte';
-  import KeepThisDeleteOthersAction from '$lib/components/asset-viewer/actions/KeepThisDeleteOthers.svelte';
   import RatingAction from '$lib/components/asset-viewer/actions/RatingAction.svelte';
-  import RemoveAssetFromStack from '$lib/components/asset-viewer/actions/RemoveAssetFromStack.svelte';
   import RestoreAction from '$lib/components/asset-viewer/actions/RestoreAction.svelte';
   import SetFeaturedPhotoAction from '$lib/components/asset-viewer/actions/SetPersonFeaturedAction.svelte';
-  import SetStackPrimaryAsset from '$lib/components/asset-viewer/actions/SetStackPrimaryAsset.svelte';
   import SetVisibilityAction from '$lib/components/asset-viewer/actions/SetVisibilityAction.svelte';
-  import UnstackAction from '$lib/components/asset-viewer/actions/UnstackAction.svelte';
   import LoadingDots from '$lib/components/LoadingDots.svelte';
   import ButtonContextMenu from '$lib/components/shared-components/context-menu/ButtonContextMenu.svelte';
   import RemoveFromAlbumAction from '$lib/components/timeline/actions/RemoveFromAlbumAction.svelte';
@@ -21,6 +16,7 @@
   import { getAlbumAssetActions } from '$lib/services/album.service';
   import { getGlobalActions } from '$lib/services/app.service';
   import { getAssetActions } from '$lib/services/asset.service';
+  import { getStackActions } from '$lib/services/stack.service';
   import { getSharedLink, withoutIcons } from '$lib/utils';
   import type { OnUndoDelete } from '$lib/utils/actions';
   import { toTimelineAsset } from '$lib/utils/timeline-util';
@@ -40,7 +36,7 @@
     asset: AssetResponseDto;
     album?: AlbumResponseDto | null;
     person?: PersonResponseDto | null;
-    stack?: StackResponseDto | null;
+    stack?: StackResponseDto;
     preAction: PreAction;
     onAction: OnAction;
     onUndoDelete?: OnUndoDelete;
@@ -54,7 +50,7 @@
     asset,
     album = null,
     person = null,
-    stack = null,
+    stack,
     preAction,
     onAction,
     onUndoDelete = undefined,
@@ -86,6 +82,7 @@
   });
 
   const Actions = $derived(getAssetActions($t, { ...asset, stackPrimaryAssetId: stack?.primaryAssetId }));
+  const StackActions = $derived(getStackActions($t, stack, asset));
   const sharedLink = getSharedLink();
 </script>
 
@@ -150,19 +147,12 @@
           <RemoveFromAlbumAction {album} onRemove={onRemoveFromAlbum} assetIds={[asset.id]} menuItem />
         {/if}
 
-        {#if isOwner}
+        <ActionMenuItem action={StackActions.AddUploads} />
-          <AddToStackAction {asset} {stack} {onAction} />
+        <ActionMenuItem action={StackActions.Unstack} />
-          {#if stack}
+        <ActionMenuItem action={StackActions.KeepThisDeleteOthers} />
-            <UnstackAction {stack} {onAction} />
+        <ActionMenuItem action={StackActions.SetPrimaryAsset} />
-            <KeepThisDeleteOthersAction {stack} {asset} {onAction} />
+        <ActionMenuItem action={StackActions.RemoveAsset} />
-            {#if stack?.primaryAssetId !== asset.id}
+
-              <SetStackPrimaryAsset {stack} {asset} {onAction} />
-              {#if stack?.assets?.length > 2}
-                <RemoveAssetFromStack {asset} {stack} {onAction} />
-              {/if}
-            {/if}
-          {/if}
-        {/if}
         {#if album}
           {@const { SetCover } = getAlbumAssetActions($t, album, asset)}
           <ActionMenuItem action={SetCover} />

web/src/lib/components/asset-viewer/actions/AddToStackAction.svelte

@@ -1,37 +0,0 @@
-<script lang="ts">
-  import MenuOption from '$lib/components/shared-components/context-menu/MenuOption.svelte';
-  import { AssetAction } from '$lib/constants';
-  import { openFileUploadDialog } from '$lib/utils/file-uploader';
-  import { createStack, type AssetResponseDto, type StackResponseDto } from '@immich/sdk';
-  import { mdiUploadMultiple } from '@mdi/js';
-  import { t } from 'svelte-i18n';
-  import type { OnAction } from './action';
-
-  interface Props {
-    asset: AssetResponseDto;
-    stack: StackResponseDto | null;
-    onAction: OnAction;
-  }
-
-  let { asset, stack, onAction }: Props = $props();
-
-  const handleAddUploadToStack = async () => {
-    const newAssetIds = await openFileUploadDialog({ multiple: true });
-    // Including the old stacks primary asset ID ensures that all assets of the
-    // old stack are automatically included in the new stack.
-    const primaryAssetId = stack?.primaryAssetId ?? asset.id;
-
-    // First asset in the list will become the new primary asset.
-    const assetIds = [primaryAssetId, ...newAssetIds];
-
-    const newStack = await createStack({
-      stackCreateDto: {
-        assetIds,
-      },
-    });
-
-    onAction({ type: AssetAction.STACK, stack: newStack });
-  };
-</script>
-
-<MenuOption icon={mdiUploadMultiple} onClick={handleAddUploadToStack} text={$t('add_upload_to_stack')} />

web/src/lib/components/asset-viewer/actions/KeepThisDeleteOthers.svelte

@@ -1,38 +0,0 @@
-<script lang="ts">
-  import MenuOption from '$lib/components/shared-components/context-menu/MenuOption.svelte';
-  import { AssetAction } from '$lib/constants';
-  import { keepThisDeleteOthers } from '$lib/utils/asset-utils';
-  import { toTimelineAsset } from '$lib/utils/timeline-util';
-  import type { AssetResponseDto, StackResponseDto } from '@immich/sdk';
-  import { modalManager } from '@immich/ui';
-  import { mdiPinOutline } from '@mdi/js';
-  import { t } from 'svelte-i18n';
-  import type { OnAction } from './action';
-
-  interface Props {
-    stack: StackResponseDto;
-    asset: AssetResponseDto;
-    onAction: OnAction;
-  }
-
-  let { stack, asset, onAction }: Props = $props();
-
-  const handleKeepThisDeleteOthers = async () => {
-    const isConfirmed = await modalManager.showDialog({
-      title: $t('keep_this_delete_others'),
-      prompt: $t('confirm_keep_this_delete_others'),
-      confirmText: $t('delete_others'),
-    });
-
-    if (!isConfirmed) {
-      return;
-    }
-
-    const keptAsset = await keepThisDeleteOthers(asset, stack);
-    if (keptAsset) {
-      onAction({ type: AssetAction.UNSTACK, assets: [toTimelineAsset(keptAsset)] });
-    }
-  };
-</script>
-
-<MenuOption icon={mdiPinOutline} onClick={handleKeepThisDeleteOthers} text={$t('keep_this_delete_others')} />

web/src/lib/components/asset-viewer/actions/RemoveAssetFromStack.svelte

@@ -1,31 +0,0 @@
-<script lang="ts">
-  import MenuOption from '$lib/components/shared-components/context-menu/MenuOption.svelte';
-
-  import { AssetAction } from '$lib/constants';
-  import { removeAssetFromStack, type AssetResponseDto, type StackResponseDto } from '@immich/sdk';
-  import { mdiImageMinusOutline } from '@mdi/js';
-  import { t } from 'svelte-i18n';
-  import type { OnAction } from './action';
-
-  interface Props {
-    asset: AssetResponseDto;
-    stack: StackResponseDto;
-    onAction: OnAction;
-  }
-
-  let { asset, stack, onAction }: Props = $props();
-
-  const handleRemoveFromStack = async () => {
-    await removeAssetFromStack({
-      id: stack.id,
-      assetId: asset.id,
-    });
-    const updatedStack = {
-      ...stack,
-      assets: stack.assets.filter((a) => a.id !== asset.id),
-    };
-    onAction({ type: AssetAction.REMOVE_ASSET_FROM_STACK, stack: updatedStack, asset });
-  };
-</script>
-
-<MenuOption icon={mdiImageMinusOutline} onClick={handleRemoveFromStack} text={$t('viewer_remove_from_stack')} />

web/src/lib/components/asset-viewer/actions/SetStackPrimaryAsset.svelte

@@ -1,26 +0,0 @@
-<script lang="ts">
-  import MenuOption from '$lib/components/shared-components/context-menu/MenuOption.svelte';
-
-  import { AssetAction } from '$lib/constants';
-  import { updateStack, type AssetResponseDto, type StackResponseDto } from '@immich/sdk';
-  import { mdiImageCheckOutline } from '@mdi/js';
-  import { t } from 'svelte-i18n';
-  import type { OnAction } from './action';
-
-  interface Props {
-    stack: StackResponseDto;
-    asset: AssetResponseDto;
-    onAction: OnAction;
-  }
-
-  let { stack, asset, onAction }: Props = $props();
-
-  const handleSetPrimaryAsset = async () => {
-    const updatedStack = await updateStack({ id: stack.id, stackUpdateDto: { primaryAssetId: asset.id } });
-    if (updatedStack) {
-      onAction({ type: AssetAction.SET_STACK_PRIMARY_ASSET, stack: updatedStack });
-    }
-  };
-</script>
-
-<MenuOption icon={mdiImageCheckOutline} onClick={handleSetPrimaryAsset} text={$t('set_stack_primary_asset')} />

web/src/lib/components/asset-viewer/actions/UnstackAction.svelte

@@ -1,26 +0,0 @@
-<script lang="ts">
-  import MenuOption from '$lib/components/shared-components/context-menu/MenuOption.svelte';
-  import { AssetAction } from '$lib/constants';
-  import { deleteStack } from '$lib/utils/asset-utils';
-  import { toTimelineAsset } from '$lib/utils/timeline-util';
-  import type { StackResponseDto } from '@immich/sdk';
-  import { mdiImageOffOutline } from '@mdi/js';
-  import { t } from 'svelte-i18n';
-  import type { OnAction } from './action';
-
-  interface Props {
-    stack: StackResponseDto;
-    onAction: OnAction;
-  }
-
-  let { stack, onAction }: Props = $props();
-
-  const handleUnstack = async () => {
-    const unstackedAssets = await deleteStack([stack.id]);
-    if (unstackedAssets) {
-      onAction({ type: AssetAction.UNSTACK, assets: unstackedAssets.map((asset) => toTimelineAsset(asset)) });
-    }
-  };
-</script>
-
-<MenuOption icon={mdiImageOffOutline} onClick={handleUnstack} text={$t('unstack')} />

web/src/lib/components/asset-viewer/actions/action.ts

@@ -1,4 +1,4 @@
-import type { AssetResponseDto, PersonResponseDto, StackResponseDto } from '@immich/sdk';
+import type { AssetResponseDto, PersonResponseDto } from '@immich/sdk';
 import type { AssetAction } from '$lib/constants';
 import type { TimelineAsset } from '$lib/managers/timeline-manager/types';
 
@@ -8,10 +8,6 @@ type ActionMap = {
   [AssetAction.TRASH]: { asset: TimelineAsset };
   [AssetAction.DELETE]: { asset: TimelineAsset };
   [AssetAction.RESTORE]: { asset: TimelineAsset };
-  [AssetAction.STACK]: { stack: StackResponseDto };
-  [AssetAction.UNSTACK]: { assets: TimelineAsset[] };
-  [AssetAction.SET_STACK_PRIMARY_ASSET]: { stack: StackResponseDto };
-  [AssetAction.REMOVE_ASSET_FROM_STACK]: { stack: StackResponseDto | null; asset: AssetResponseDto };
   [AssetAction.SET_VISIBILITY_LOCKED]: { asset: TimelineAsset };
   [AssetAction.SET_VISIBILITY_TIMELINE]: { asset: TimelineAsset };
   [AssetAction.SET_PERSON_FEATURED_PHOTO]: { asset: AssetResponseDto; person: PersonResponseDto };

web/src/lib/components/timeline/TimelineAssetViewer.svelte

@@ -9,7 +9,6 @@
   import type { TimelineAsset } from '$lib/managers/timeline-manager/types';
   import { websocketEvents } from '$lib/stores/websocket';
   import { handlePromiseError } from '$lib/utils';
-  import { updateStackedAssetInTimeline, updateUnstackedAssetInTimeline } from '$lib/utils/actions';
   import { navigateToAsset } from '$lib/utils/asset-utils';
   import { handleErrorAsync } from '$lib/utils/handle-error';
   import { navigate } from '$lib/utils/navigation';
@@ -150,52 +149,6 @@
         timelineManager.upsertAssets([action.asset]);
         break;
       }
-
-      case AssetAction.STACK: {
-        updateStackedAssetInTimeline(timelineManager, {
-          stack: action.stack,
-          toDeleteIds: action.stack.assets
-            .filter((asset) => asset.id !== action.stack.primaryAssetId)
-            .map((asset) => asset.id),
-        });
-        break;
-      }
-
-      case AssetAction.UNSTACK: {
-        updateUnstackedAssetInTimeline(timelineManager, action.assets);
-        break;
-      }
-      case AssetAction.REMOVE_ASSET_FROM_STACK: {
-        timelineManager.upsertAssets([toTimelineAsset(action.asset)]);
-        if (action.stack) {
-          //Have to unstack then restack assets in timeline in order to update the stack count in the timeline.
-          updateUnstackedAssetInTimeline(
-            timelineManager,
-            action.stack.assets.map((asset) => toTimelineAsset(asset)),
-          );
-          updateStackedAssetInTimeline(timelineManager, {
-            stack: action.stack,
-            toDeleteIds: action.stack.assets
-              .filter((asset) => asset.id !== action.stack?.primaryAssetId)
-              .map((asset) => asset.id),
-          });
-        }
-        break;
-      }
-      case AssetAction.SET_STACK_PRIMARY_ASSET: {
-        //Have to unstack then restack assets in timeline in order for the currently removed new primary asset to be made visible.
-        updateUnstackedAssetInTimeline(
-          timelineManager,
-          action.stack.assets.map((asset) => toTimelineAsset(asset)),
-        );
-        updateStackedAssetInTimeline(timelineManager, {
-          stack: action.stack,
-          toDeleteIds: action.stack.assets
-            .filter((asset) => asset.id !== action.stack.primaryAssetId)
-            .map((asset) => asset.id),
-        });
-        break;
-      }
       // no default
     }
   };

web/src/lib/components/timeline/actions/StackAction.svelte

@@ -1,45 +0,0 @@
-<script lang="ts">
-  import MenuOption from '$lib/components/shared-components/context-menu/MenuOption.svelte';
-  import { assetMultiSelectManager } from '$lib/managers/asset-multi-select-manager.svelte';
-  import type { OnStack, OnUnstack } from '$lib/utils/actions';
-  import { deleteStack, stackAssets } from '$lib/utils/asset-utils';
-  import { toTimelineAsset } from '$lib/utils/timeline-util';
-  import { mdiImageMultipleOutline, mdiImageOffOutline } from '@mdi/js';
-  import { t } from 'svelte-i18n';
-
-  interface Props {
-    unstack?: boolean;
-    onStack: OnStack | undefined;
-    onUnstack: OnUnstack | undefined;
-  }
-
-  let { unstack = false, onStack, onUnstack }: Props = $props();
-
-  const handleStack = async () => {
-    const result = await stackAssets(assetMultiSelectManager.ownedAssets);
-    onStack?.(result);
-    assetMultiSelectManager.clear();
-  };
-
-  const handleUnstack = async () => {
-    const selectedAssets = assetMultiSelectManager.ownedAssets;
-    if (selectedAssets.length !== 1) {
-      return;
-    }
-    const { stack } = selectedAssets[0];
-    if (!stack) {
-      return;
-    }
-    const unstackedAssets = await deleteStack([stack.id]);
-    if (unstackedAssets) {
-      onUnstack?.(unstackedAssets.map((a) => toTimelineAsset(a)));
-    }
-    assetMultiSelectManager.clear();
-  };
-</script>
-
-{#if unstack}
-  <MenuOption text={$t('unstack')} icon={mdiImageOffOutline} onClick={handleUnstack} />
-{:else}
-  <MenuOption text={$t('stack')} icon={mdiImageMultipleOutline} onClick={handleStack} />
-{/if}

web/src/lib/components/timeline/actions/TimelineKeyboardActions.svelte

@@ -15,12 +15,13 @@
   import NavigateToDateModal from '$lib/modals/NavigateToDateModal.svelte';
   import ShortcutsModal from '$lib/modals/ShortcutsModal.svelte';
   import { Route } from '$lib/route';
+  import { handleStack } from '$lib/services/stack.service';
   import { keyboardManager } from '$lib/stores/keyboard-manager.svelte';
   import { showDeleteModal } from '$lib/stores/preferences.store';
   import { searchStore } from '$lib/stores/search.svelte';
   import { handlePromiseError } from '$lib/utils';
-  import { deleteAssets, updateStackedAssetInTimeline } from '$lib/utils/actions';
+  import { deleteAssets } from '$lib/utils/actions';
-  import { archiveAssets, selectAllAssets, stackAssets } from '$lib/utils/asset-utils';
+  import { archiveAssets, selectAllAssets } from '$lib/utils/asset-utils';
   import { AssetVisibility } from '@immich/sdk';
   import { isModalOpen, modalManager } from '@immich/ui';
 
@@ -59,10 +60,7 @@
   };
 
   const onStackAssets = async () => {
-    const result = await stackAssets(assetInteraction.assets);
+    await handleStack(assetInteraction.assets.map((asset) => asset.id));
-
-    updateStackedAssetInTimeline(timelineManager, result);
-
     onEscape?.();
   };
 

web/src/lib/constants.ts

@@ -6,10 +6,6 @@ export enum AssetAction {
   TRASH = 'trash',
   DELETE = 'delete',
   RESTORE = 'restore',
-  STACK = 'stack',
-  UNSTACK = 'unstack',
-  SET_STACK_PRIMARY_ASSET = 'set-stack-primary-asset',
-  REMOVE_ASSET_FROM_STACK = 'remove-asset-from-stack',
   SET_VISIBILITY_LOCKED = 'set-visibility-locked',
   SET_VISIBILITY_TIMELINE = 'set-visibility-timeline',
   SET_PERSON_FEATURED_PHOTO = 'set-person-featured-photo',

web/src/lib/managers/event-manager.svelte.ts

@@ -11,6 +11,7 @@ import type {
   QueueResponseDto,
   ReleaseEventV1,
   SharedLinkResponseDto,
+  StackResponseDto,
   SystemConfigDto,
   TagResponseDto,
   UserAdminResponseDto,
@@ -61,6 +62,11 @@ export type Events = {
   SharedLinkUpdate: [SharedLinkResponseDto];
   SharedLinkDelete: [SharedLinkResponseDto];
 
+  StackCreate: [StackResponseDto];
+  /** Unstacked, with assets to handle */
+  StackDelete: [{ id: string; assets: AssetResponseDto[] }];
+  StackUpdate: [StackResponseDto];
+
   TagCreate: [TagResponseDto];
   TagUpdate: [TagResponseDto];
   TagDelete: [TreeNode];

web/src/lib/managers/timeline-manager/timeline-manager.svelte.ts

@@ -17,6 +17,7 @@ import {
   retrieveRange as retrieveRangeUtil,
 } from '$lib/managers/timeline-manager/internal/search-support.svelte';
 import { WebsocketSupport } from '$lib/managers/timeline-manager/internal/websocket-support.svelte';
+import { updateStackedAssetInTimeline } from '$lib/utils/actions';
 import { CancellableTask } from '$lib/utils/cancellable-task';
 import { PersistedLocalStorage } from '$lib/utils/persisted';
 import {
@@ -115,6 +116,23 @@ export class TimelineManager extends VirtualScrollManager {
     this.#unsubscribes.push(
       eventManager.on({
         AssetUpdate: (asset: AssetResponseDto) => this.#updateAssets([toTimelineAsset(asset)]),
+        StackCreate: (stack) => updateStackedAssetInTimeline(this, stack),
+        StackDelete: ({ assets }) => {
+          this.update(
+            assets.map((asset) => asset.id),
+            (asset) => (asset.stack = null),
+          );
+          this.upsertAssets(assets.map((asset) => toTimelineAsset(asset)));
+        },
+        StackUpdate: (stack) => {
+          // unstack and re-stack
+          this.update(
+            stack.assets.map((asset) => asset.id),
+            (asset) => (asset.stack = null),
+          );
+          this.upsertAssets(stack.assets.map((asset) => toTimelineAsset(asset)));
+          updateStackedAssetInTimeline(this, stack);
+        },
       }),
     );
   }

web/src/lib/services/stack.service.ts

@@ -0,0 +1,216 @@
+import {
+  createStack,
+  deleteAssets,
+  deleteStacks,
+  getStack,
+  removeAssetFromStack,
+  updateStack,
+  type AssetResponseDto,
+  type AssetStackResponseDto,
+  type StackResponseDto,
+} from '@immich/sdk';
+import { modalManager, toastManager, type ActionItem } from '@immich/ui';
+import {
+  mdiImageCheckOutline,
+  mdiImageMinusOutline,
+  mdiImageMultipleOutline,
+  mdiImageOffOutline,
+  mdiPinOutline,
+  mdiUploadMultiple,
+} from '@mdi/js';
+import { type MessageFormatter } from 'svelte-i18n';
+import { assetMultiSelectManager } from '$lib/managers/asset-multi-select-manager.svelte';
+import { authManager } from '$lib/managers/auth-manager.svelte';
+import { eventManager } from '$lib/managers/event-manager.svelte';
+import { openFileUploadDialog } from '$lib/utils/file-uploader';
+import { handleError } from '$lib/utils/handle-error';
+import { getFormatter } from '$lib/utils/i18n';
+import { navigate } from '$lib/utils/navigation';
+
+export const getStackBulkActions = ($t: MessageFormatter) => {
+  const Stack: ActionItem = {
+    title: $t('stack'),
+    icon: mdiImageMultipleOutline,
+    $if: () => assetMultiSelectManager.ownedAssets.length > 1,
+    onAction: () => handleStack(assetMultiSelectManager.ownedAssets.map((asset) => asset.id)),
+  };
+
+  const Unstack: ActionItem = {
+    title: $t('unstack'),
+    icon: mdiImageOffOutline,
+    $if: () => assetMultiSelectManager.ownedAssets.every((asset) => !!asset.stack),
+    onAction: () => handleDeleteStacks(assetMultiSelectManager.ownedAssets.map(({ stack }) => stack!)),
+  };
+
+  return { Stack, Unstack };
+};
+
+export const getStackActions = ($t: MessageFormatter, stack: StackResponseDto | undefined, asset: AssetResponseDto) => {
+  const authUser = authManager.authenticated ? authManager.user : undefined;
+  const isAssetOwner = !!(authUser && authUser.id === asset.ownerId);
+  const validStack = !!stack && isAssetOwner;
+
+  const AddUploads: ActionItem = {
+    title: $t('add_upload_to_stack', { values: { isStack: !!stack } }),
+    icon: mdiUploadMultiple,
+    $if: () => isAssetOwner,
+    onAction: () => handleAddUploadToStack(stack, asset),
+  };
+
+  const KeepThisDeleteOthers: ActionItem = {
+    title: $t('keep_this_delete_others'),
+    icon: mdiPinOutline,
+    $if: () => validStack,
+    onAction: () => handleKeepThisDeleteOthers(stack!, asset),
+  };
+
+  const RemoveAsset: ActionItem = {
+    title: $t('viewer_remove_from_stack'),
+    icon: mdiImageMinusOutline,
+    $if: () => validStack && stack?.primaryAssetId !== asset.id && stack?.assets?.length > 2,
+    onAction: () => handleRemoveFromStack(stack!, asset),
+  };
+
+  const SetPrimaryAsset: ActionItem = {
+    title: $t('set_stack_primary_asset'),
+    icon: mdiImageCheckOutline,
+    $if: () => validStack && stack!.primaryAssetId !== asset.id,
+    onAction: () => handleSetPrimaryAsset(stack!, asset),
+  };
+
+  const Unstack: ActionItem = {
+    title: $t('unstack'),
+    icon: mdiImageOffOutline,
+    $if: () => validStack,
+    onAction: () => handleDeleteStack(stack!),
+  };
+
+  return { AddUploads, KeepThisDeleteOthers, RemoveAsset, SetPrimaryAsset, Unstack };
+};
+
+const handleAddUploadToStack = async (stack: StackResponseDto | undefined, asset: AssetResponseDto) => {
+  const $t = await getFormatter();
+
+  const newAssetIds = await openFileUploadDialog({ multiple: true });
+  // Including the old stack's primary asset ID ensures that all assets of the
+  // old stack are automatically included in the new stack.
+  const primaryAssetId = stack?.primaryAssetId ?? asset.id;
+
+  // First asset in the list will become the new primary asset.
+  const assetIds = [primaryAssetId, ...newAssetIds];
+
+  try {
+    const stack = await createStack({ stackCreateDto: { assetIds } });
+
+    toastManager.primary($t('stack_created'));
+    eventManager.emit('StackCreate', stack);
+  } catch (error) {
+    handleError(error, $t('errors.failed_to_stack_assets'));
+  }
+};
+
+const handleKeepThisDeleteOthers = async (stack: StackResponseDto, asset: AssetResponseDto) => {
+  const $t = await getFormatter();
+
+  const isConfirmed = await modalManager.showDialog({
+    title: $t('keep_this_delete_others'),
+    prompt: $t('confirm_keep_this_delete_others'),
+    confirmText: $t('delete_others'),
+  });
+
+  if (!isConfirmed) {
+    return;
+  }
+
+  try {
+    const assetsToDeleteIds = stack.assets.filter((a) => a.id !== asset.id).map((asset) => asset.id);
+    await deleteAssets({ assetBulkDeleteDto: { ids: assetsToDeleteIds } });
+    await deleteStacks({ bulkIdsDto: { ids: [stack.id] } });
+
+    toastManager.primary($t('kept_this_deleted_others', { values: { count: assetsToDeleteIds.length } }));
+    eventManager.emit('StackDelete', { id: stack.id, assets: [asset] });
+    eventManager.emit('AssetUpdate', { ...asset, stack: null });
+  } catch (error) {
+    handleError(error, $t('errors.failed_to_keep_this_delete_others'));
+  }
+};
+
+const handleRemoveFromStack = async (stack: StackResponseDto, asset: AssetResponseDto) => {
+  const $t = await getFormatter();
+
+  try {
+    await removeAssetFromStack({ id: stack.id, assetId: asset.id });
+    const updatedStack = {
+      ...stack,
+      assets: stack.assets.filter((a) => a.id !== asset.id),
+    };
+
+    toastManager.primary($t('removed_from_stack'));
+    eventManager.emit('AssetUpdate', asset); // todo: check if this re-inserts into timeline
+    eventManager.emit('StackUpdate', updatedStack);
+  } catch (error) {
+    handleError(error, $t('errors.failed_to_unstack_assets'));
+  }
+};
+
+const handleSetPrimaryAsset = async (stack: StackResponseDto, asset: AssetResponseDto) => {
+  const $t = await getFormatter();
+
+  try {
+    const updatedStack = await updateStack({ id: stack.id, stackUpdateDto: { primaryAssetId: asset.id } });
+
+    // todo: toast?
+    eventManager.emit('StackUpdate', updatedStack);
+  } catch (error) {
+    handleError(error, $t('errors.something_went_wrong'));
+  }
+};
+
+export const handleStack = async (assetIds: string[]) => {
+  const $t = await getFormatter();
+
+  try {
+    const stack = await createStack({ stackCreateDto: { assetIds } });
+
+    toastManager.primary({
+      description: $t('stacked_assets_count', { values: { count: stack.assets.length } }),
+      button: {
+        label: $t('view_stack'),
+        onclick: () => navigate({ targetRoute: 'current', assetId: stack.primaryAssetId }),
+      },
+    });
+    eventManager.emit('StackCreate', stack);
+    assetMultiSelectManager.clear();
+  } catch (error) {
+    handleError(error, $t('errors.failed_to_stack_assets'));
+  }
+};
+
+export const handleDeleteStack = async (stack: StackResponseDto) => {
+  const $t = await getFormatter();
+
+  try {
+    await deleteStacks({ bulkIdsDto: { ids: [stack.id] } });
+
+    const assetIds = stack.assets.map((asset) => asset.id);
+
+    toastManager.primary($t('unstacked_assets_count', { values: { count: assetIds.length } }));
+    eventManager.emit('StackDelete', stack);
+
+    return assetIds;
+  } catch (error) {
+    handleError(error, $t('errors.failed_to_unstack_assets'));
+  }
+};
+
+const handleDeleteStacks = async (assetStacks: AssetStackResponseDto[]) => {
+  const $t = await getFormatter();
+
+  try {
+    const stacks = await Promise.all(assetStacks.map((stack) => getStack(stack)));
+    await Promise.all(stacks.map((stack) => handleDeleteStack(stack)));
+  } catch (error) {
+    handleError(error, $t('errors.failed_to_unstack_assets'));
+  }
+  assetMultiSelectManager.clear();
+};

web/src/lib/utils/actions.ts

@@ -1,10 +1,9 @@
-import { AssetVisibility, deleteAssets as deleteBulk, restoreAssets } from '@immich/sdk';
+import { AssetVisibility, deleteAssets as deleteBulk, restoreAssets, type StackResponseDto } from '@immich/sdk';
 import { toastManager } from '@immich/ui';
 import { t } from 'svelte-i18n';
 import { get } from 'svelte/store';
 import { TimelineManager } from '$lib/managers/timeline-manager/timeline-manager.svelte';
 import type { TimelineAsset } from '$lib/managers/timeline-manager/types';
-import type { StackResponse } from '$lib/utils/asset-utils';
 import { handleError } from './handle-error';
 
 export type OnDelete = (assetIds: string[]) => void;
@@ -15,8 +14,6 @@ export type OnUnlink = (assets: { still: TimelineAsset; motion: TimelineAsset })
 export type OnAddToAlbum = (ids: string[], albumId: string) => void;
 export type OnArchive = (ids: string[], visibility: AssetVisibility) => void;
 export type OnFavorite = (ids: string[], favorite: boolean) => void;
-export type OnStack = (result: StackResponse) => void;
-export type OnUnstack = (assets: TimelineAsset[]) => void;
 export type OnSetVisibility = (ids: string[]) => void;
 
 export const deleteAssets = async (
@@ -62,43 +59,18 @@ const undoDeleteAssets = async (onUndoDelete: OnUndoDelete, assets: TimelineAsse
 /**
  * Update the asset stack state in the asset store based on the provided stack response.
  * This function updates the stack information so that the icon is shown for the primary asset
- * and removes any assets from the timeline that are marked for deletion.
+ * and removes the non-primary assets from the timeline.
- *
- * @param {TimelineManager} timelineManager - The timeline manager to update.
- * @param {StackResponse} stackResponse - The stack response containing the stack and assets to delete.
  */
-export function updateStackedAssetInTimeline(timelineManager: TimelineManager, { stack, toDeleteIds }: StackResponse) {
+export function updateStackedAssetInTimeline(timelineManager: TimelineManager, stack: StackResponseDto) {
-  if (stack != undefined) {
+  timelineManager.update([stack.primaryAssetId], (asset) => {
-    timelineManager.update(
+    asset.stack = {
-      [stack.primaryAssetId],
-      (asset) =>
-        (asset.stack = {
       id: stack.id,
       primaryAssetId: stack.primaryAssetId,
       assetCount: stack.assets.length,
-        }),
+    };
+  });
+
+  timelineManager.removeAssets(
+    stack.assets.filter((asset) => asset.id !== stack.primaryAssetId).map((asset) => asset.id),
   );
-
-    timelineManager.removeAssets(toDeleteIds);
-  }
-}
-
-/**
- * Update the timeline manager to reflect the unstacked state of assets.
- * This function updates the stack property of each asset to undefined, effectively unstacking them.
- * It also adds the unstacked assets back to the timeline manager.
- *
- * @param timelineManager - The timeline manager to update.
- * @param assets - The array of asset response DTOs to update in the timeline manager.
- */
-export function updateUnstackedAssetInTimeline(timelineManager: TimelineManager, assets: TimelineAsset[]) {
-  timelineManager.update(
-    assets.map((asset) => asset.id),
-    (asset) => {
-      asset.stack = null;
-      return { remove: false };
-    },
-  );
-
-  timelineManager.upsertAssets(assets);
 }

web/src/lib/utils/asset-utils.ts

@@ -1,12 +1,8 @@
 import {
   AssetVisibility,
   bulkTagAssets,
-  createStack,
-  deleteAssets,
-  deleteStacks,
   getBaseUrl,
   getDownloadInfo,
-  getStack,
   untagAssets,
   updateAsset,
   updateAssets,
@@ -14,7 +10,6 @@ import {
   type AssetTypeEnum,
   type DownloadInfoDto,
   type ExifResponseDto,
-  type StackResponseDto,
   type UserResponseDto,
 } from '@immich/sdk';
 import { toastManager } from '@immich/ui';
@@ -281,84 +276,6 @@ export const getOwnedAssetsWithWarning = (assets: TimelineAsset[], user: UserRes
   return ids;
 };
 
-export type StackResponse = {
-  stack?: StackResponseDto;
-  toDeleteIds: string[];
-};
-
-export const stackAssets = async (assets: { id: string }[], showNotification = true): Promise<StackResponse> => {
-  if (assets.length < 2) {
-    return { stack: undefined, toDeleteIds: [] };
-  }
-
-  const $t = get(t);
-
-  try {
-    const stack = await createStack({ stackCreateDto: { assetIds: assets.map(({ id }) => id) } });
-    if (showNotification) {
-      toastManager.primary({
-        description: $t('stacked_assets_count', { values: { count: stack.assets.length } }),
-        button: {
-          label: $t('view_stack'),
-          onclick: () => navigate({ targetRoute: 'current', assetId: stack.primaryAssetId }),
-        },
-      });
-    }
-
-    return {
-      stack,
-      toDeleteIds: assets.slice(1).map((asset) => asset.id),
-    };
-  } catch (error) {
-    handleError(error, $t('errors.failed_to_stack_assets'));
-    return { stack: undefined, toDeleteIds: [] };
-  }
-};
-
-export const deleteStack = async (stackIds: string[]) => {
-  const ids = [...new Set(stackIds)];
-  if (ids.length === 0) {
-    return;
-  }
-
-  const $t = get(t);
-
-  try {
-    const stacks = await Promise.all(ids.map((id) => getStack({ id })));
-    const count = stacks.reduce((sum, stack) => sum + stack.assets.length, 0);
-
-    await deleteStacks({ bulkIdsDto: { ids: [...ids] } });
-
-    toastManager.primary($t('unstacked_assets_count', { values: { count } }));
-
-    const assets = stacks.flatMap((stack) => stack.assets);
-    for (const asset of assets) {
-      asset.stack = null;
-    }
-
-    return assets;
-  } catch (error) {
-    handleError(error, $t('errors.failed_to_unstack_assets'));
-  }
-};
-
-export const keepThisDeleteOthers = async (keepAsset: AssetResponseDto, stack: StackResponseDto) => {
-  const $t = get(t);
-
-  try {
-    const assetsToDeleteIds = stack.assets.filter((asset) => asset.id !== keepAsset.id).map((asset) => asset.id);
-    await deleteAssets({ assetBulkDeleteDto: { ids: assetsToDeleteIds } });
-    await deleteStacks({ bulkIdsDto: { ids: [stack.id] } });
-
-    toastManager.primary($t('kept_this_deleted_others', { values: { count: assetsToDeleteIds.length } }));
-
-    keepAsset.stack = null;
-    return keepAsset;
-  } catch (error) {
-    handleError(error, $t('errors.failed_to_keep_this_delete_others'));
-  }
-};
-
 export const selectAllAssets = async (timelineManager: TimelineManager, assetInteraction: AssetMultiSelectManager) => {
   if (assetInteraction.selectAll) {
     // Selection is already ongoing

web/src/routes/(user)/map/[[photos=photos]]/[[assetId=id]]/MapTimelinePanel.svelte

@@ -13,7 +13,6 @@
   import LinkLivePhotoAction from '$lib/components/timeline/actions/LinkLivePhotoAction.svelte';
   import SelectAllAssets from '$lib/components/timeline/actions/SelectAllAction.svelte';
   import SetVisibilityAction from '$lib/components/timeline/actions/SetVisibilityAction.svelte';
-  import StackAction from '$lib/components/timeline/actions/StackAction.svelte';
   import TagAction from '$lib/components/timeline/actions/TagAction.svelte';
   import AssetSelectControlBar from '$lib/components/timeline/AssetSelectControlBar.svelte';
   import Timeline from '$lib/components/timeline/Timeline.svelte';
@@ -22,13 +21,9 @@
   import { authManager } from '$lib/managers/auth-manager.svelte';
   import { TimelineManager } from '$lib/managers/timeline-manager/timeline-manager.svelte';
   import { getAssetBulkActions } from '$lib/services/asset.service';
+  import { getStackBulkActions } from '$lib/services/stack.service';
   import { mapSettings } from '$lib/stores/preferences.store';
-  import {
+  import { type OnLink, type OnUnlink } from '$lib/utils/actions';
-    updateStackedAssetInTimeline,
-    updateUnstackedAssetInTimeline,
-    type OnLink,
-    type OnUnlink,
-  } from '$lib/utils/actions';
   import { AssetVisibility } from '@immich/sdk';
   import { ActionButton, CloseButton, CommandPaletteDefaultProvider, Icon } from '@immich/ui';
   import { mdiDotsVertical, mdiImageMultiple } from '@mdi/js';
@@ -46,7 +41,6 @@
 
   let timelineManager = $state<TimelineManager>() as TimelineManager;
   let selectedAssets = $derived(assetMultiSelectManager.assets);
-  let isAssetStackSelected = $derived(selectedAssets.length === 1 && !!selectedAssets[0].stack);
   let isLinkActionAvailable = $derived.by(() => {
     const isLivePhoto = selectedAssets.length === 1 && !!selectedAssets[0].livePhotoVideoId;
     const isLivePhotoCandidate =
@@ -85,6 +79,7 @@
     visibility: $mapSettings.includeArchived ? undefined : AssetVisibility.Timeline,
     isFavorite: $mapSettings.onlyFavorites || undefined,
     withPartners: $mapSettings.withPartners || undefined,
+    withStacked: true,
     assetFilter: selectedClusterIds,
   });
 
@@ -113,12 +108,14 @@
       onEscape={handleEscape}
       assetInteraction={assetMultiSelectManager}
       showArchiveIcon
+      withStacked
     />
   </div>
 </aside>
 
 {#if assetMultiSelectManager.selectionActive}
   {@const Actions = getAssetBulkActions($t)}
+  {@const StackActions = getStackBulkActions($t)}
   <CommandPaletteDefaultProvider name={$t('assets')} actions={Object.values(Actions)} />
 
   <Portal target="body">
@@ -135,13 +132,8 @@
 
         <ButtonContextMenu icon={mdiDotsVertical} title={$t('menu')}>
           <DownloadAction menuItem />
-          {#if assetMultiSelectManager.assets.length > 1 || isAssetStackSelected}
+          <ActionMenuItem action={StackActions.Stack} />
-            <StackAction
+          <ActionMenuItem action={StackActions.Unstack} />
-              unstack={isAssetStackSelected}
-              onStack={(result) => updateStackedAssetInTimeline(timelineManager, result)}
-              onUnstack={(assets) => updateUnstackedAssetInTimeline(timelineManager, assets)}
-            />
-          {/if}
           {#if isLinkActionAvailable}
             <LinkLivePhotoAction
               menuItem

web/src/routes/(user)/people/[personId]/[[photos=photos]]/[[assetId=id]]/+page.svelte

@@ -481,7 +481,10 @@
         <ArchiveAction
           menuItem
           unarchive={assetMultiSelectManager.isAllArchived}
-          onArchive={(ids, visibility) => timelineManager.update(ids, (asset) => (asset.visibility = visibility))}
+          onArchive={(ids, visibility) =>
+            timelineManager.update(ids, (asset) => {
+              asset.visibility = visibility;
+            })}
         />
         {#if authManager.preferences.tags.enabled && assetMultiSelectManager.isAllUserOwned}
           <TagAction menuItem />

web/src/routes/(user)/photos/[[assetId=id]]/+page.svelte

@@ -14,7 +14,6 @@
   import LinkLivePhotoAction from '$lib/components/timeline/actions/LinkLivePhotoAction.svelte';
   import SelectAllAssets from '$lib/components/timeline/actions/SelectAllAction.svelte';
   import SetVisibilityAction from '$lib/components/timeline/actions/SetVisibilityAction.svelte';
-  import StackAction from '$lib/components/timeline/actions/StackAction.svelte';
   import TagAction from '$lib/components/timeline/actions/TagAction.svelte';
   import AssetSelectControlBar from '$lib/components/timeline/AssetSelectControlBar.svelte';
   import Timeline from '$lib/components/timeline/Timeline.svelte';
@@ -26,13 +25,9 @@
   import { TimelineManager } from '$lib/managers/timeline-manager/timeline-manager.svelte';
   import { Route } from '$lib/route';
   import { getAssetBulkActions } from '$lib/services/asset.service';
+  import { getStackBulkActions } from '$lib/services/stack.service';
   import { getAssetMediaUrl, memoryLaneTitle } from '$lib/utils';
-  import {
+  import { type OnLink, type OnUnlink } from '$lib/utils/actions';
-    updateStackedAssetInTimeline,
-    updateUnstackedAssetInTimeline,
-    type OnLink,
-    type OnUnlink,
-  } from '$lib/utils/actions';
   import { openFileUploadDialog } from '$lib/utils/file-uploader';
   import { getAltText } from '$lib/utils/thumbnail-util';
   import { toTimelineAsset } from '$lib/utils/timeline-util';
@@ -45,7 +40,6 @@
   const options = { visibility: AssetVisibility.Timeline, withStacked: true, withPartners: true };
 
   let selectedAssets = $derived(assetMultiSelectManager.assets);
-  let isAssetStackSelected = $derived(selectedAssets.length === 1 && !!selectedAssets[0].stack);
   let isLinkActionAvailable = $derived.by(() => {
     const isLivePhoto = selectedAssets.length === 1 && !!selectedAssets[0].livePhotoVideoId;
     const isLivePhotoCandidate =
@@ -114,6 +108,7 @@
 {#if assetMultiSelectManager.selectionActive}
   <AssetSelectControlBar>
     {@const Actions = getAssetBulkActions($t)}
+    {@const StackActions = getStackBulkActions($t)}
     <CommandPaletteDefaultProvider name={$t('assets')} actions={Object.values(Actions)} />
 
     <CreateSharedLink />
@@ -128,13 +123,8 @@
 
       <ButtonContextMenu icon={mdiDotsVertical} title={$t('menu')}>
         <DownloadAction menuItem />
-        {#if assetMultiSelectManager.assets.length > 1 || isAssetStackSelected}
+        <ActionMenuItem action={StackActions.Stack} />
-          <StackAction
+        <ActionMenuItem action={StackActions.Unstack} />
-            unstack={isAssetStackSelected}
-            onStack={(result) => updateStackedAssetInTimeline(timelineManager, result)}
-            onUnstack={(assets) => updateUnstackedAssetInTimeline(timelineManager, assets)}
-          />
-        {/if}
         {#if isLinkActionAvailable}
           <LinkLivePhotoAction
             menuItem

web/src/routes/(user)/recently-added/[[photos=photos]]/[[assetId=id]]/+page.svelte

@@ -14,7 +14,6 @@
   import LinkLivePhotoAction from '$lib/components/timeline/actions/LinkLivePhotoAction.svelte';
   import SelectAllAssets from '$lib/components/timeline/actions/SelectAllAction.svelte';
   import SetVisibilityAction from '$lib/components/timeline/actions/SetVisibilityAction.svelte';
-  import StackAction from '$lib/components/timeline/actions/StackAction.svelte';
   import TagAction from '$lib/components/timeline/actions/TagAction.svelte';
   import AssetSelectControlBar from '$lib/components/timeline/AssetSelectControlBar.svelte';
   import Timeline from '$lib/components/timeline/Timeline.svelte';
@@ -24,18 +23,14 @@
   import { authManager } from '$lib/managers/auth-manager.svelte';
   import { TimelineManager } from '$lib/managers/timeline-manager/timeline-manager.svelte';
   import { getAssetBulkActions } from '$lib/services/asset.service';
-  import {
+  import { type OnLink, type OnUnlink } from '$lib/utils/actions';
-    updateStackedAssetInTimeline,
-    updateUnstackedAssetInTimeline,
-    type OnLink,
-    type OnUnlink,
-  } from '$lib/utils/actions';
   import { openFileUploadDialog } from '$lib/utils/file-uploader';
   import { AssetVisibility, AssetOrderBy } from '@immich/sdk';
   import { ActionButton, CommandPaletteDefaultProvider } from '@immich/ui';
   import { mdiDotsVertical } from '@mdi/js';
   import { t } from 'svelte-i18n';
   import type { PageData } from './$types';
+  import { getStackBulkActions } from '$lib/services/stack.service';
 
   type Props = {
     data: PageData;
@@ -52,7 +47,6 @@
   };
 
   let selectedAssets = $derived(assetMultiSelectManager.assets);
-  let isAssetStackSelected = $derived(selectedAssets.length === 1 && !!selectedAssets[0].stack);
   let isLinkActionAvailable = $derived.by(() => {
     const isLivePhoto = selectedAssets.length === 1 && !!selectedAssets[0].livePhotoVideoId;
     const isLivePhotoCandidate =
@@ -108,6 +102,7 @@
 {#if assetMultiSelectManager.selectionActive}
   <AssetSelectControlBar>
     {@const Actions = getAssetBulkActions($t)}
+    {@const StackActions = getStackBulkActions($t)}
     <CommandPaletteDefaultProvider name={$t('assets')} actions={Object.values(Actions)} />
 
     <CreateSharedLink />
@@ -122,13 +117,8 @@
 
       <ButtonContextMenu icon={mdiDotsVertical} title={$t('menu')}>
         <DownloadAction menuItem />
-        {#if assetMultiSelectManager.assets.length > 1 || isAssetStackSelected}
+        <ActionMenuItem action={StackActions.Stack} />
-          <StackAction
+        <ActionMenuItem action={StackActions.Unstack} />
-            unstack={isAssetStackSelected}
-            onStack={(result) => updateStackedAssetInTimeline(timelineManager, result)}
-            onUnstack={(assets) => updateUnstackedAssetInTimeline(timelineManager, assets)}
-          />
-        {/if}
         {#if isLinkActionAvailable}
           <LinkLivePhotoAction
             menuItem