feat: timeline-manager improvement to use AssetResponseDto efficiently

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

@@ -188,7 +188,7 @@
       // the performance benefits of deferred layouts while still supporting deep linking
       // to assets at the end of the timeline.
       timelineManager.isScrollingOnLoad = true;
-      const monthGroup = await timelineManager.findMonthGroupForAsset(assetId);
+      const monthGroup = await timelineManager.findMonthGroupForAsset({ id: assetId });
       if (!monthGroup) {
         return false;
       }

web/src/lib/managers/timeline-manager/internal/search-support.svelte.ts

@@ -1,18 +1,22 @@
 import { plainDateTimeCompare, type TimelineYearMonth } from '$lib/utils/timeline-util';
-import { AssetOrder } from '@immich/sdk';
+import { AssetOrder, type AssetResponseDto } from '@immich/sdk';
 import { DateTime } from 'luxon';
 import type { MonthGroup } from '../month-group.svelte';
 import { TimelineManager } from '../timeline-manager.svelte';
 import type { AssetDescriptor, Direction, TimelineAsset } from '../types';
 
 export async function getAssetWithOffset(
   timelineManager: TimelineManager,
-  assetDescriptor: AssetDescriptor,
+  assetDescriptor: AssetDescriptor | AssetResponseDto,
   interval: 'asset' | 'day' | 'month' | 'year' = 'asset',
   direction: Direction,
 ): Promise<TimelineAsset | undefined> {
-  const { asset, monthGroup } = findMonthGroupForAsset(timelineManager, assetDescriptor.id) ?? {};
-  if (!monthGroup || !asset) {
+  const monthGroup = await timelineManager.findMonthGroupForAsset(assetDescriptor);
+  if (!monthGroup) {
+    return;
+  }
+  const asset = monthGroup.findAssetById(assetDescriptor);
+  if (!asset) {
     return;
   }
 

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

@@ -524,6 +524,7 @@ describe('TimelineManager', () => {
         { count: 3, timeBucket: '2024-01-01T00:00:00.000Z' },
       ]);
       sdkMock.getTimeBucket.mockImplementation(({ timeBucket }) => Promise.resolve(bucketAssetsResponse[timeBucket]));
+      sdkMock.getAssetInfo.mockRejectedValue(new Error('Asset not found'));
       await timelineManager.updateViewport({ width: 1588, height: 1000 });
     });
 

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

@@ -16,12 +16,13 @@ import { WebsocketSupport } from '$lib/managers/timeline-manager/internal/websoc
 import { CancellableTask } from '$lib/utils/cancellable-task';
 import { PersistedLocalStorage } from '$lib/utils/persisted';
 import {
+  isAssetResponseDto,
   setDifference,
   toTimelineAsset,
   type TimelineDateTime,
   type TimelineYearMonth,
 } from '$lib/utils/timeline-util';
-import { AssetOrder, getAssetInfo, getTimeBuckets } from '@immich/sdk';
+import { AssetOrder, getAssetInfo, getTimeBuckets, type AssetResponseDto } from '@immich/sdk';
 import { clamp, isEqual } from 'lodash-es';
 import { SvelteDate, SvelteSet } from 'svelte/reactivity';
 import { DayGroup } from './day-group.svelte';
@@ -343,27 +344,30 @@ export class TimelineManager extends VirtualScrollManager {
     this.addAssetsUpsertSegments([...notExcluded]);
   }
 
-  async findMonthGroupForAsset(id: string) {
+  async findMonthGroupForAsset(asset: AssetDescriptor | AssetResponseDto) {
     if (!this.isInitialized) {
       await this.initTask.waitUntilCompletion();
     }
 
+    const { id } = asset;
     let { monthGroup } = findMonthGroupForAssetUtil(this, id) ?? {};
     if (monthGroup) {
       return monthGroup;
     }
 
-    const response = await getAssetInfo({ ...authManager.params, id }).catch(() => null);
+    const response = isAssetResponseDto(asset)
+      ? asset
+      : await getAssetInfo({ ...authManager.params, id }).catch(() => null);
     if (!response) {
       return;
     }
 
-    const asset = toTimelineAsset(response);
-    if (!asset || this.isExcluded(asset)) {
+    const timelineAsset = toTimelineAsset(response);
+    if (this.isExcluded(timelineAsset)) {
       return;
     }
 
-    monthGroup = await this.#loadMonthGroupAtTime(asset.localDateTime, { cancelable: false });
+    monthGroup = await this.#loadMonthGroupAtTime(timelineAsset.localDateTime, { cancelable: false });
     if (monthGroup?.findAssetById({ id })) {
       return monthGroup;
     }
@@ -532,14 +536,14 @@ export class TimelineManager extends VirtualScrollManager {
   }
 
   async getLaterAsset(
-    assetDescriptor: AssetDescriptor,
+    assetDescriptor: AssetDescriptor | AssetResponseDto,
     interval: 'asset' | 'day' | 'month' | 'year' = 'asset',
   ): Promise<TimelineAsset | undefined> {
     return await getAssetWithOffset(this, assetDescriptor, interval, 'later');
   }
 
   async getEarlierAsset(
-    assetDescriptor: AssetDescriptor,
+    assetDescriptor: AssetDescriptor | AssetResponseDto,
     interval: 'asset' | 'day' | 'month' | 'year' = 'asset',
   ): Promise<TimelineAsset | undefined> {
     return await getAssetWithOffset(this, assetDescriptor, interval, 'earlier');

web/src/lib/utils/timeline-util.ts

@@ -1,4 +1,4 @@
-import type { TimelineAsset, ViewportTopMonth } from '$lib/managers/timeline-manager/types';
+import type { AssetDescriptor, TimelineAsset, ViewportTopMonth } from '$lib/managers/timeline-manager/types';
 import { locale } from '$lib/stores/preferences.store';
 import { getAssetRatio } from '$lib/utils/asset-utils';
 import { AssetTypeEnum, type AssetResponseDto } from '@immich/sdk';
@@ -192,8 +192,13 @@ export const toTimelineAsset = (unknownAsset: AssetResponseDto | TimelineAsset):
   };
 };
 
-export const isTimelineAsset = (unknownAsset: AssetResponseDto | TimelineAsset): unknownAsset is TimelineAsset =>
-  (unknownAsset as TimelineAsset).ratio !== undefined;
+export const isTimelineAsset = (
+  unknownAsset: AssetDescriptor | AssetResponseDto | TimelineAsset,
+): unknownAsset is TimelineAsset => (unknownAsset as TimelineAsset).ratio !== undefined;
+
+export const isAssetResponseDto = (
+  unknownAsset: AssetDescriptor | AssetResponseDto | TimelineAsset,
+): unknownAsset is AssetResponseDto => (unknownAsset as AssetResponseDto).type !== undefined;
 
 export const isTimelineAssets = (assets: AssetResponseDto[] | TimelineAsset[]): assets is TimelineAsset[] =>
   assets.length === 0 || 'ratio' in assets[0];