feat(web): Add upload to stack action (#19842)

* feat(web): Add upload to stack action

* Event handling and translation

* Update asset viewer instead

* lint, improve upload return type

* Add suggestions from code review

* Resolve merge conflicts

* Apply suggestions from code review

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

@@ -12,6 +12,7 @@ type ActionMap = {
   [AssetAction.RESTORE]: { asset: TimelineAsset };
   [AssetAction.ADD]: { asset: TimelineAsset };
   [AssetAction.ADD_TO_ALBUM]: { asset: TimelineAsset; album: AlbumResponseDto };
+  [AssetAction.STACK]: { stack: StackResponseDto };
   [AssetAction.UNSTACK]: { assets: TimelineAsset[] };
   [AssetAction.KEEP_THIS_DELETE_OTHERS]: { asset: TimelineAsset };
   [AssetAction.SET_STACK_PRIMARY_ASSET]: { stack: StackResponseDto };

web/src/lib/components/asset-viewer/actions/add-to-stack-action.svelte

@@ -0,0 +1,37 @@
+<script lang="ts">
+  import MenuOption from '$lib/components/shared-components/context-menu/menu-option.svelte';
+  import { AssetAction } from '$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/asset-viewer-nav-bar.svelte

@@ -4,6 +4,7 @@
   import CastButton from '$lib/cast/cast-button.svelte';
   import type { OnAction, PreAction } from '$lib/components/asset-viewer/actions/action';
   import AddToAlbumAction from '$lib/components/asset-viewer/actions/add-to-album-action.svelte';
+  import AddToStackAction from '$lib/components/asset-viewer/actions/add-to-stack-action.svelte';
   import ArchiveAction from '$lib/components/asset-viewer/actions/archive-action.svelte';
   import CloseAction from '$lib/components/asset-viewer/actions/close-action.svelte';
   import DeleteAction from '$lib/components/asset-viewer/actions/delete-action.svelte';
@@ -196,6 +197,7 @@
         {/if}
 
         {#if isOwner}
+          <AddToStackAction {asset} {stack} {onAction} />
           {#if stack}
             <UnstackAction {stack} {onAction} />
             <KeepThisDeleteOthersAction {stack} {asset} {onAction} />

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

@@ -336,6 +336,7 @@
         }
         break;
       }
+      case AssetAction.STACK:
       case AssetAction.SET_STACK_PRIMARY_ASSET: {
         stack = action.stack;
         break;