refactor(web): asset-viewer code improvements

Change-Id: Ic8e750f4d6429a374c3a3f98542db8d36a6a6964

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

@@ -108,6 +108,10 @@
   let sharedLink = getSharedLink();
   let fullscreenElement = $state<Element>();
 
+  let slideShowPlaying = $derived($slideshowState === SlideshowState.PlaySlideshow);
+  let slideShowAscending = $derived($slideshowNavigation === SlideshowNavigation.AscendingOrder);
+  let slideShowShuffle = $derived($slideshowNavigation === SlideshowNavigation.Shuffle);
+
   let playOriginalVideo = $state($alwaysLoadOriginalVideo);
   let slideshowStartAssetId = $state<string>();
 
@@ -141,12 +145,6 @@
     }
   };
 
-  const onAssetUpdate = (updatedAsset: AssetResponseDto) => {
-    if (asset.id === updatedAsset.id) {
-      cursor = { ...cursor, current: updatedAsset };
-    }
-  };
-
   let detailPanelTransitionName = $state<string | undefined>();
   let navigationBarTransitionName = $state<string | undefined>();
   let previousButtonTransitionName = $state<string | undefined>();
@@ -230,68 +228,65 @@
     assetViewerManager.closeEditor();
   };
 
+  const completeNavigation = async (order: 'previous' | 'next') => {
+    preloadManager.cancelBeforeNavigation(order);
+
+    let hasNext: boolean;
+
+    if (slideShowPlaying && slideShowShuffle) {
+      let next = order === 'previous' ? slideshowHistory.previous() : slideshowHistory.next();
+      if (!next) {
+        const asset = await onRandom?.();
+        if (asset) {
+          slideshowHistory.queue(asset);
+          next = true;
+        }
+      }
+      hasNext = next;
+    } else {
+      const target = order === 'previous' ? previousAsset : nextAsset;
+      hasNext = await navigateToAsset(target);
+    }
+
+    if (!slideShowPlaying) {
+      return;
+    }
+
+    if (hasNext) {
+      $restartSlideshowProgress = true;
+      return;
+    }
+
+    if ($slideshowRepeat && slideshowStartAssetId) {
+      await assetViewerManager.setAssetId(slideshowStartAssetId);
+      $restartSlideshowProgress = true;
+      return;
+    }
+
+    await handleStopSlideshow();
+  };
+
   const tracker = new InvocationTracker();
   let navigating = $state(false);
   const navigateAsset = (order?: 'previous' | 'next') => {
     if (!order) {
-      if ($slideshowState === SlideshowState.PlaySlideshow) {
-        order = $slideshowNavigation === SlideshowNavigation.AscendingOrder ? 'previous' : 'next';
+      if (slideShowPlaying) {
+        order = slideShowAscending ? 'previous' : 'next';
       } else {
         return;
       }
     }
 
-    preloadManager.cancelBeforeNavigation(order);
-
     if (tracker.isActive()) {
       return;
     }
 
     navigating = true;
-    const navigation = tracker.invoke(async () => {
-      const isShuffle =
-        $slideshowState === SlideshowState.PlaySlideshow && $slideshowNavigation === SlideshowNavigation.Shuffle;
-
-      let hasNext: boolean;
-
-      if (isShuffle) {
-        hasNext = order === 'previous' ? slideshowHistory.previous() : slideshowHistory.next();
-        if (!hasNext) {
-          const asset = await onRandom?.();
-          if (asset) {
-            slideshowHistory.queue(asset);
-            hasNext = true;
-          }
-        }
-      } else {
-        hasNext =
-          order === 'previous' ? await navigateToAsset(cursor.previousAsset) : await navigateToAsset(cursor.nextAsset);
-      }
-
-      if ($slideshowState !== SlideshowState.PlaySlideshow) {
-        return;
-      }
-
-      if (hasNext) {
-        $restartSlideshowProgress = true;
-        return;
-      }
-
-      if ($slideshowRepeat && slideshowStartAssetId) {
-        await assetViewerManager.setAssetId(slideshowStartAssetId);
-        $restartSlideshowProgress = true;
-        return;
-      }
-
-      await handleStopSlideshow();
-    }, $t('error_while_navigating'));
-    void navigation.finally(() => (navigating = false));
+    void tracker
+      .invoke(() => completeNavigation(order), $t('error_while_navigating'))
+      .finally(() => (navigating = false));
   };
 
-  /**
-   * Slide show mode
-   */
-
   let assetViewerHtmlElement = $state<HTMLElement>();
 
   const slideshowHistory = new SlideshowHistory((asset) => {
@@ -316,9 +311,11 @@
 
   const handleStopSlideshow = async () => {
     try {
-      if (document.fullscreenElement) {
-        await document.exitFullscreen();
+      if (!document.fullscreenElement) {
+        return;
       }
+      document.body.style.cursor = '';
+      await document.exitFullscreen();
     } catch (error) {
       handleError(error, $t('errors.unable_to_exit_fullscreen'));
     } finally {
@@ -421,14 +418,21 @@
       return;
     }
     if (lastCursor) {
+      previewStackedAsset = undefined;
+      ocrManager.showOverlay = false;
       preloadManager.updateAfterNavigation(lastCursor, cursor, sharedLink);
-    }
-    if (!lastCursor) {
+    } else {
       preloadManager.initializePreloads(cursor, sharedLink);
     }
     lastCursor = cursor;
   });
 
+  const onAssetUpdate = (update: AssetResponseDto) => {
+    if (asset.id === update.id) {
+      cursor = { ...cursor, current: update };
+    }
+  };
+
   const viewerKind = $derived.by(() => {
     if (previewStackedAsset) {
       return previewStackedAsset.type === AssetTypeEnum.Image ? 'PhotoViewer' : 'StackVideoViewer';
@@ -504,7 +508,6 @@
   use:focusTrap
   bind:this={assetViewerHtmlElement}
 >
-  <!-- Top navigation bar -->
   {#if $slideshowState === SlideshowState.None && !assetViewerManager.isShowEditor}
     <div
       class="col-span-4 col-start-1 row-span-1 row-start-1 transition-transform"
@@ -551,11 +554,11 @@
     </div>
   {/if}
 
-  <!-- Asset Viewer -->
   <div data-viewer-content class="z-[-1] relative col-start-1 col-span-4 row-start-1 row-span-full">
     {#if viewerKind === 'StackVideoViewer'}
       <VideoViewer
         asset={previewStackedAsset!}
+        assetId={previewStackedAsset!.id}
         cacheKey={previewStackedAsset!.thumbhash}
         projectionType={previewStackedAsset!.exifInfo?.projectionType}
         loopVideo={true}
@@ -647,7 +650,7 @@
     </div>
   {/if}
 
-  {#if stack && withStacked && !assetViewerManager.isShowEditor}
+  {#if stack && withStacked && $slideshowState === SlideshowState.None && !assetViewerManager.isShowEditor}
     {@const stackedAssets = stack.assets}
     <div id="stack-slideshow" class="absolute bottom-0 w-full col-span-4 col-start-1 pointer-events-none">
       <div class="relative flex flex-row no-wrap overflow-x-auto overflow-y-hidden horizontal-scrollbar">

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

@@ -35,6 +35,9 @@
   let { cursor, element = $bindable(), sharedLink, onError, onSwipe }: Props = $props();
 
   const { slideshowState, slideshowLook } = slideshowStore;
+  const objectFit = $derived(
+    $slideshowState !== SlideshowState.None && $slideshowLook === SlideshowLook.Cover ? 'cover' : 'contain',
+  );
   const asset = $derived(cursor.current);
 
   let visibleImageReady: boolean = $state(false);
@@ -226,7 +229,7 @@
     {asset}
     {sharedLink}
     {container}
-    objectFit={$slideshowState !== SlideshowState.None && $slideshowLook === SlideshowLook.Cover ? 'cover' : 'contain'}
+    {objectFit}
     {onUrlChange}
     onImageReady={() => {
       visibleImageReady = true;

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

@@ -58,7 +58,6 @@
   });
 
   $effect(() => {
-    // reactive on `assetFileUrl` changes
     if (assetFileUrl) {
       hasFocused = false;
       videoPlayer?.load();

web/src/lib/components/shared-components/navigation-bar/navigation-bar.svelte

@@ -9,8 +9,8 @@
   import SearchBar from '$lib/components/shared-components/search-bar/search-bar.svelte';
   import SkipLink from '$lib/elements/SkipLink.svelte';
   import { authManager } from '$lib/managers/auth-manager.svelte';
-  import { viewTransitionManager } from '$lib/managers/ViewTransitionManager.svelte';
   import { featureFlagsManager } from '$lib/managers/feature-flags-manager.svelte';
+  import { viewTransitionManager } from '$lib/managers/ViewTransitionManager.svelte';
   import { Route } from '$lib/route';
   import { getGlobalActions } from '$lib/services/app.service';
   import { mediaQueryManager } from '$lib/stores/media-query-manager.svelte';
@@ -37,16 +37,11 @@
   let shouldShowNotificationPanel = $state(false);
   let innerWidth: number = $state(0);
   const hasUnreadNotifications = $derived(notificationManager.notifications.length > 0);
-
-  onMount(async () => {
-    try {
-      await notificationManager.refresh();
-    } catch (error) {
-      console.error('Failed to load notifications on mount', error);
-    }
-  });
+  const { Cast } = $derived(getGlobalActions($t));
 
   onMount(() => {
+    void notificationManager.refresh().catch((error) => console.error('Failed to load notifications on mount', error));
+
     return viewTransitionManager.on({
       PrepareOldSnapshot: (types) => {
         if (types.includes('viewer')) {
@@ -61,8 +56,6 @@
       },
     });
   });
-
-  const { Cast } = $derived(getGlobalActions($t));
 </script>
 
 <svelte:window bind:innerWidth />