feat(web): use wasm for justified layout calculation (#15524)

* working

* use wrapper class

* update import

* simplify

* it works without changing `optimizeDeps`

* inline layout options

* update gallery view

* use es2022

* fix import

* fix vitest

* empty geometry

* bump version

* Update web/src/lib/stores/assets.store.ts

Co-authored-by: Jason Rasmussen <jason@rasm.me>

* fix: typo

---------

Co-authored-by: Jason Rasmussen <jason@rasm.me>
Co-authored-by: Alex Tran <alex.tran1502@gmail.com>

web/src/lib/components/photos-page/asset-date-group.svelte

@@ -97,6 +97,7 @@
   {#each dateGroups as dateGroup, groupIndex (dateGroup.date)}
     {@const display =
       dateGroup.intersecting || !!dateGroup.assets.some((asset) => asset.id === $assetStore.pendingScrollAssetId)}
+    {@const geometry = dateGroup.geometry}
 
     <div
       id="date-group"
@@ -118,7 +119,7 @@
       data-display={display}
       data-date-group={dateGroup.date}
       style:height={dateGroup.height + 'px'}
-      style:width={dateGroup.geometry.containerWidth + 'px'}
+      style:width={geometry.containerWidth + 'px'}
       style:overflow={'clip'}
     >
       {#if !display}
@@ -149,7 +150,7 @@
           <!-- Date group title -->
           <div
             class="flex z-[100] sticky top-[-1px] pt-[calc(1.75rem+1px)] pb-5 h-6 place-items-center text-xs font-medium text-immich-fg bg-immich-bg dark:bg-immich-dark-bg dark:text-immich-dark-fg md:text-sm"
-            style:width={dateGroup.geometry.containerWidth + 'px'}
+            style:width={geometry.containerWidth + 'px'}
           >
             {#if !singleSelect && ((hoveredDateGroup == dateGroup.groupTitle && isMouseOverGroup) || assetInteraction.selectedGroup.has(dateGroup.groupTitle))}
               <div
@@ -174,12 +175,17 @@
           <!-- Image grid -->
           <div
             class="relative overflow-clip"
-            style:height={dateGroup.geometry.containerHeight + 'px'}
-            style:width={dateGroup.geometry.containerWidth + 'px'}
+            style:height={geometry.containerHeight + 'px'}
+            style:width={geometry.containerWidth + 'px'}
           >
-            {#each dateGroup.assets as asset, index (asset.id)}
-              {@const box = dateGroup.geometry.boxes[index]}
+            {#each dateGroup.assets as asset, i (asset.id)}
               {@const isSmallGroup = dateGroup.assets.length <= SMALL_GROUP_THRESHOLD}
+              <!-- getting these together here in this order is very cache-efficient -->
+              {@const top = geometry.getTop(i)}
+              {@const left = geometry.getLeft(i)}
+              {@const width = geometry.getWidth(i)}
+              {@const height = geometry.getHeight(i)}
+
               <!-- update ASSET_GRID_PADDING-->
               <div
                 use:intersectionObserver={{
@@ -191,10 +197,10 @@
                 }}
                 data-asset-id={asset.id}
                 class="absolute"
-                style:width={box.width + 'px'}
-                style:height={box.height + 'px'}
-                style:top={box.top + 'px'}
-                style:left={box.left + 'px'}
+                style:top={top + 'px'}
+                style:left={left + 'px'}
+                style:width={width + 'px'}
+                style:height={height + 'px'}
               >
                 <Thumbnail
                   {dateGroup}
@@ -216,8 +222,8 @@
                   selected={assetInteraction.selectedAssets.has(asset) || $assetStore.albumAssets.has(asset.id)}
                   selectionCandidate={assetInteraction.assetSelectionCandidates.has(asset)}
                   disabled={$assetStore.albumAssets.has(asset.id)}
-                  thumbnailWidth={box.width}
-                  thumbnailHeight={box.height}
+                  thumbnailWidth={width}
+                  thumbnailHeight={height}
                   eagerThumbhash={isSmallGroup}
                 />
               </div>

web/src/lib/components/shared-components/gallery-viewer/gallery-viewer.svelte

@@ -8,13 +8,11 @@
   import type { Viewport } from '$lib/stores/assets.store';
   import { showDeleteModal } from '$lib/stores/preferences.store';
   import { deleteAssets } from '$lib/utils/actions';
-  import { archiveAssets, cancelMultiselect, getAssetRatio } from '$lib/utils/asset-utils';
+  import { archiveAssets, cancelMultiselect, getJustifiedLayoutFromAssets } from '$lib/utils/asset-utils';
   import { featureFlags } from '$lib/stores/server-config.store';
   import { handleError } from '$lib/utils/handle-error';
   import { navigate } from '$lib/utils/navigation';
-  import { calculateWidth } from '$lib/utils/timeline-util';
   import { type AssetResponseDto } from '@immich/sdk';
-  import justifiedLayout from 'justified-layout';
   import { t } from 'svelte-i18n';
   import AssetViewer from '../../asset-viewer/asset-viewer.svelte';
   import ShowShortcuts from '../show-shortcuts.svelte';
@@ -310,23 +308,12 @@
   let idsSelectedAssets = $derived(assetInteraction.selectedAssetsArray.map(({ id }) => id));
 
   let geometry = $derived(
-    (() => {
-      const justifiedLayoutResult = justifiedLayout(
-        assets.map((asset) => getAssetRatio(asset)),
-        {
-          boxSpacing: 2,
-          containerWidth: Math.floor(viewport.width),
-          containerPadding: 0,
-          targetRowHeightTolerance: 0.15,
-          targetRowHeight: 235,
-        },
-      );
-
-      return {
-        ...justifiedLayoutResult,
-        containerWidth: calculateWidth(justifiedLayoutResult.boxes),
-      };
-    })(),
+    getJustifiedLayoutFromAssets(assets, {
+      spacing: 2,
+      rowWidth: Math.floor(viewport.width),
+      heightTolerance: 0.15,
+      rowHeight: 235,
+    }),
   );
 
   $effect(() => {
@@ -364,11 +351,15 @@
 
 {#if assets.length > 0}
   <div class="relative" style="height: {geometry.containerHeight}px;width: {geometry.containerWidth}px ">
-    {#each assets as asset, i (i)}
+    {#each assets as asset, i}
+      {@const top = geometry.getTop(i)}
+      {@const left = geometry.getLeft(i)}
+      {@const width = geometry.getWidth(i)}
+      {@const height = geometry.getHeight(i)}
+
       <div
         class="absolute"
-        style="width: {geometry.boxes[i].width}px; height: {geometry.boxes[i].height}px; top: {geometry.boxes[i]
-          .top}px; left: {geometry.boxes[i].left}px"
+        style="width: {width}px; height: {height}px; top: {top}px; left: {left}px"
         title={showAssetName ? asset.originalFileName : ''}
       >
         <Thumbnail
@@ -387,8 +378,8 @@
           {asset}
           selected={assetInteraction.selectedAssets.has(asset)}
           selectionCandidate={assetInteraction.assetSelectionCandidates.has(asset)}
-          thumbnailWidth={geometry.boxes[i].width}
-          thumbnailHeight={geometry.boxes[i].height}
+          thumbnailWidth={width}
+          thumbnailHeight={height}
         />
         {#if showAssetName}
           <div