mirror of
https://github.com/immich-app/immich.git
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refactor(web): asset grid state (#3513)
* refactor(web): asset grid state * fix: multi-select across time buckets --------- Co-authored-by: Alex Tran <alex.tran1502@gmail.com>
This commit is contained in:
Jason Rasmussen
GitHub
parent
050ee91289
commit
28ab1d4551
@ -19,7 +19,7 @@
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const assetGridState = get(assetStore);
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for (const bucket of assetGridState.buckets) {
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await assetStore.getAssetsByBucket(bucket.bucketDate, BucketPosition.Unknown);
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await assetStore.loadBucket(bucket.bucketDate, BucketPosition.Unknown);
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for (const asset of bucket.assets) {
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assetInteractionStore.addAssetToMultiselectGroup(asset);
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}
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@ -60,7 +60,7 @@
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$: {
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if (actualBucketHeight && actualBucketHeight != 0 && actualBucketHeight != bucketHeight) {
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const heightDelta = assetStore.updateBucketHeight(bucketDate, actualBucketHeight);
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const heightDelta = assetStore.updateBucket(bucketDate, actualBucketHeight);
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if (heightDelta !== 0) {
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scrollTimeline(heightDelta);
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}
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@ -4,7 +4,7 @@
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import { locale } from '$lib/stores/preferences.store';
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import { formatGroupTitle, splitBucketIntoDateGroups } from '$lib/utils/timeline-util';
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import type { UserResponseDto } from '@api';
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import { api, AssetCountByTimeBucketResponseDto, AssetResponseDto, TimeGroupEnum } from '@api';
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import { AssetResponseDto, TimeGroupEnum, api } from '@api';
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import { DateTime } from 'luxon';
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import { onDestroy, onMount } from 'svelte';
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import AssetViewer from '../asset-viewer/asset-viewer.svelte';
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@ -17,13 +17,13 @@
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import AssetDateGroup from './asset-date-group.svelte';
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import MemoryLane from './memory-lane.svelte';
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import { AppRoute } from '$lib/constants';
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import { goto } from '$app/navigation';
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import { browser } from '$app/environment';
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import { goto } from '$app/navigation';
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import { AppRoute } from '$lib/constants';
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import type { AssetInteractionStore } from '$lib/stores/asset-interaction.store';
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import type { AssetStore } from '$lib/stores/assets.store';
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import { isSearchEnabled } from '$lib/stores/search.store';
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import ShowShortcuts from '../shared-components/show-shortcuts.svelte';
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import type { AssetStore } from '$lib/stores/assets.store';
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import type { AssetInteractionStore } from '$lib/stores/asset-interaction.store';
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export let user: UserResponseDto | undefined = undefined;
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export let isAlbumSelectionMode = false;
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@ -39,14 +39,13 @@
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let viewportHeight = 0;
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let viewportWidth = 0;
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let assetGridElement: HTMLElement;
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let bucketInfo: AssetCountByTimeBucketResponseDto;
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let showShortcuts = false;
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const onKeyboardPress = (event: KeyboardEvent) => handleKeyboardPress(event);
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onMount(async () => {
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document.addEventListener('keydown', onKeyboardPress);
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const { data: assetCountByTimebucket } = await api.assetApi.getAssetCountByTimeBucket({
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const { data: timeBuckets } = await api.assetApi.getAssetCountByTimeBucket({
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getAssetCountByTimeBucketDto: {
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timeGroup: TimeGroupEnum.Month,
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userId: user?.id,
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@ -54,26 +53,7 @@
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},
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});
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bucketInfo = assetCountByTimebucket;
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assetStore.setInitialState(viewportHeight, viewportWidth, assetCountByTimebucket, user?.id);
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// Get asset bucket if bucket height is smaller than viewport height
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let bucketsToFetchInitially: string[] = [];
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let initialBucketsHeight = 0;
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$assetStore.buckets.every((bucket) => {
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if (initialBucketsHeight < viewportHeight) {
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initialBucketsHeight += bucket.bucketHeight;
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bucketsToFetchInitially.push(bucket.bucketDate);
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return true;
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} else {
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return false;
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}
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});
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bucketsToFetchInitially.forEach((bucketDate) => {
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assetStore.getAssetsByBucket(bucketDate, BucketPosition.Visible);
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});
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assetStore.init({ width: viewportHeight, height: viewportWidth }, timeBuckets.buckets, user?.id);
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});
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onDestroy(() => {
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@ -81,7 +61,7 @@
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document.removeEventListener('keydown', onKeyboardPress);
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}
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assetStore.setInitialState(0, 0, { totalCount: 0, buckets: [] }, undefined);
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assetStore.init({ width: 0, height: 0 }, [], undefined);
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});
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const handleKeyboardPress = (event: KeyboardEvent) => {
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@ -113,7 +93,7 @@
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const target = el.firstChild as HTMLElement;
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if (target) {
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const bucketDate = target.id.split('_')[1];
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assetStore.getAssetsByBucket(bucketDate, event.detail.position);
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assetStore.loadBucket(bucketDate, event.detail.position);
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}
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}
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@ -122,14 +102,14 @@
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}
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const navigateToPreviousAsset = async () => {
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const prevAsset = await assetStore.getAdjacentAsset($viewingAsset.id, 'previous');
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const prevAsset = await assetStore.getPreviousAssetId($viewingAsset.id);
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if (prevAsset) {
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assetViewingStore.setAssetId(prevAsset);
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}
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};
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const navigateToNextAsset = async () => {
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const nextAsset = await assetStore.getAdjacentAsset($viewingAsset.id, 'next');
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const nextAsset = await assetStore.getNextAssetId($viewingAsset.id);
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if (nextAsset) {
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assetViewingStore.setAssetId(nextAsset);
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}
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@ -234,8 +214,12 @@
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assetInteractionStore.clearAssetSelectionCandidates();
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if ($assetSelectionStart && rangeSelection) {
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let startBucketIndex = $assetStore.loadedAssets[$assetSelectionStart.id];
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let endBucketIndex = $assetStore.loadedAssets[asset.id];
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let startBucketIndex = $assetStore.getBucketIndexByAssetId($assetSelectionStart.id);
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let endBucketIndex = $assetStore.getBucketIndexByAssetId(asset.id);
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if (startBucketIndex === null || endBucketIndex === null) {
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return;
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}
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if (endBucketIndex < startBucketIndex) {
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[startBucketIndex, endBucketIndex] = [endBucketIndex, startBucketIndex];
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@ -244,7 +228,7 @@
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// Select/deselect assets in all intermediate buckets
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for (let bucketIndex = startBucketIndex + 1; bucketIndex < endBucketIndex; bucketIndex++) {
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const bucket = $assetStore.buckets[bucketIndex];
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await assetStore.getAssetsByBucket(bucket.bucketDate, BucketPosition.Unknown);
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await assetStore.loadBucket(bucket.bucketDate, BucketPosition.Unknown);
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for (const asset of bucket.assets) {
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if (deselect) {
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assetInteractionStore.removeAssetFromMultiselectGroup(asset);
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@ -308,7 +292,7 @@
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<ShowShortcuts on:close={() => (showShortcuts = !showShortcuts)} />
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{/if}
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{#if bucketInfo && viewportHeight && $assetStore.timelineHeight > viewportHeight}
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{#if viewportHeight && $assetStore.initialized && $assetStore.timelineHeight > viewportHeight}
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<Scrollbar
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{assetStore}
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scrollbarHeight={viewportHeight}
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@ -335,9 +319,7 @@
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{#each $assetStore.buckets as bucket, bucketIndex (bucketIndex)}
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<IntersectionObserver
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on:intersected={intersectedHandler}
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on:hidden={async () => {
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await assetStore.cancelBucketRequest(bucket.cancelToken, bucket.bucketDate);
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}}
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on:hidden={() => assetStore.cancelBucket(bucket)}
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let:intersecting
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top={750}
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bottom={750}
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@ -1,4 +1,7 @@
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import type { AssetResponseDto } from '@api';
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import { api, AssetCountByTimeBucket, AssetResponseDto } from '@api';
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import { writable } from 'svelte/store';
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import type { AssetStore } from '../stores/assets.store';
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import { handleError } from '../utils/handle-error';
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export enum BucketPosition {
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Above = 'above',
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@ -7,6 +10,17 @@ export enum BucketPosition {
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Unknown = 'unknown',
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}
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export interface Viewport {
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width: number;
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height: number;
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}
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interface AssetLookup {
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bucket: AssetBucket;
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bucketIndex: number;
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assetIndex: number;
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}
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export class AssetBucket {
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/**
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* The DOM height of the bucket in pixel
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@ -15,44 +29,220 @@ export class AssetBucket {
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bucketHeight!: number;
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bucketDate!: string;
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assets!: AssetResponseDto[];
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cancelToken!: AbortController;
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cancelToken!: AbortController | null;
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position!: BucketPosition;
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}
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export class AssetGridState {
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/**
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* The total height of the timeline in pixel
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* This value is first estimated by the number of asset and later is corrected as the user scroll
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*/
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const THUMBNAIL_HEIGHT = 235;
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export class AssetGridState implements AssetStore {
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private store$ = writable(this);
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private assetToBucket: Record<string, AssetLookup> = {};
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private viewport: Viewport = { width: 0, height: 0 };
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private userId: string | undefined;
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initialized = false;
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timelineHeight = 0;
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/**
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* The fixed viewport height in pixel
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*/
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viewportHeight = 0;
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/**
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* The fixed viewport width in pixel
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*/
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viewportWidth = 0;
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/**
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* List of bucket information
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*/
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buckets: AssetBucket[] = [];
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/**
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* Total assets that have been loaded
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*/
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assets: AssetResponseDto[] = [];
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/**
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* Total assets that have been loaded along with additional data
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*/
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loadedAssets: Record<string, number> = {};
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subscribe = this.store$.subscribe;
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/**
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* User that owns assets
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*/
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userId: string | undefined;
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init(viewport: Viewport, buckets: AssetCountByTimeBucket[], userId: string | undefined) {
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this.initialized = false;
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this.assets = [];
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this.assetToBucket = {};
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this.buckets = [];
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this.viewport = viewport;
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this.userId = userId;
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this.buckets = buckets.map((bucket) => {
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const unwrappedWidth = (3 / 2) * bucket.count * THUMBNAIL_HEIGHT * (7 / 10);
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const rows = Math.ceil(unwrappedWidth / this.viewport.width);
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const height = rows * THUMBNAIL_HEIGHT;
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return {
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bucketDate: bucket.timeBucket,
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bucketHeight: height,
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assets: [],
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cancelToken: null,
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position: BucketPosition.Unknown,
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};
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});
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this.timelineHeight = this.buckets.reduce((acc, b) => acc + b.bucketHeight, 0);
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this.emit(false);
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let height = 0;
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for (const bucket of this.buckets) {
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if (height < this.viewport.height) {
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height += bucket.bucketHeight;
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this.loadBucket(bucket.bucketDate, BucketPosition.Visible);
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continue;
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}
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break;
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}
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this.initialized = true;
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}
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getBucketByDate(bucketDate: string): AssetBucket | null {
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return this.buckets.find((bucket) => bucket.bucketDate === bucketDate) || null;
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}
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getBucketInfoForAssetId(assetId: string) {
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return this.assetToBucket[assetId] || null;
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}
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getBucketIndexByAssetId(assetId: string) {
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return this.assetToBucket[assetId]?.bucketIndex ?? null;
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}
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async loadBucket(bucketDate: string, position: BucketPosition): Promise<void> {
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try {
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const bucket = this.getBucketByDate(bucketDate);
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if (!bucket) {
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return;
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}
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bucket.position = position;
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if (bucket.assets.length !== 0) {
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this.emit(false);
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return;
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}
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bucket.cancelToken = new AbortController();
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const { data: assets } = await api.assetApi.getAssetByTimeBucket(
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{
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getAssetByTimeBucketDto: {
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timeBucket: [bucketDate],
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userId: this.userId,
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withoutThumbs: true,
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},
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},
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{ signal: bucket.cancelToken.signal },
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);
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bucket.assets = assets;
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this.emit(true);
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} catch (error) {
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handleError(error, 'Failed to load assets');
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}
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}
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cancelBucket(bucket: AssetBucket) {
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bucket.cancelToken?.abort();
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}
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updateBucket(bucketDate: string, height: number) {
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const bucket = this.getBucketByDate(bucketDate);
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if (!bucket) {
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return 0;
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}
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const delta = height - bucket.bucketHeight;
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const scrollTimeline = bucket.position == BucketPosition.Above;
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bucket.bucketHeight = height;
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bucket.position = BucketPosition.Unknown;
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this.timelineHeight += delta;
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this.emit(false);
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return scrollTimeline ? delta : 0;
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}
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updateAsset(assetId: string, isFavorite: boolean) {
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const asset = this.assets.find((asset) => asset.id === assetId);
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if (!asset) {
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return;
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}
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asset.isFavorite = isFavorite;
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this.emit(false);
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}
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removeAsset(assetId: string) {
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for (let i = 0; i < this.buckets.length; i++) {
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const bucket = this.buckets[i];
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for (let j = 0; j < bucket.assets.length; j++) {
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const asset = bucket.assets[j];
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if (asset.id !== assetId) {
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continue;
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}
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bucket.assets.splice(j, 1);
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if (bucket.assets.length === 0) {
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this.buckets.splice(i, 1);
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}
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this.emit(true);
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return;
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}
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}
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}
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async getPreviousAssetId(assetId: string): Promise<string | null> {
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const info = this.getBucketInfoForAssetId(assetId);
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if (!info) {
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return null;
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}
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const { bucket, assetIndex, bucketIndex } = info;
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if (assetIndex !== 0) {
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return bucket.assets[assetIndex - 1].id;
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}
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if (bucketIndex === 0) {
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return null;
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}
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const previousBucket = this.buckets[bucketIndex - 1];
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await this.loadBucket(previousBucket.bucketDate, BucketPosition.Unknown);
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return previousBucket.assets.at(-1)?.id || null;
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}
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async getNextAssetId(assetId: string): Promise<string | null> {
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const info = this.getBucketInfoForAssetId(assetId);
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if (!info) {
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return null;
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}
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const { bucket, assetIndex, bucketIndex } = info;
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if (assetIndex !== bucket.assets.length - 1) {
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return bucket.assets[assetIndex + 1].id;
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}
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if (bucketIndex === this.buckets.length - 1) {
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return null;
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}
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const nextBucket = this.buckets[bucketIndex + 1];
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await this.loadBucket(nextBucket.bucketDate, BucketPosition.Unknown);
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return nextBucket.assets[0]?.id || null;
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}
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private emit(recalculate: boolean) {
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if (recalculate) {
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this.assets = this.buckets.flatMap(({ assets }) => assets);
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const assetToBucket: Record<string, AssetLookup> = {};
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for (let i = 0; i < this.buckets.length; i++) {
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const bucket = this.buckets[i];
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for (let j = 0; j < bucket.assets.length; j++) {
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const asset = bucket.assets[j];
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assetToBucket[asset.id] = { bucket, bucketIndex: i, assetIndex: j };
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}
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}
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this.assetToBucket = assetToBucket;
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}
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this.store$.update(() => this);
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}
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}
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@ -1,268 +1,38 @@
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import { AssetGridState, BucketPosition } from '$lib/models/asset-grid-state';
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import { api, AssetCountByTimeBucketResponseDto, AssetResponseDto } from '@api';
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import { writable } from 'svelte/store';
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import { AssetBucket, AssetGridState, BucketPosition, Viewport } from '$lib/models/asset-grid-state';
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import type { AssetCountByTimeBucket } from '@api';
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export interface AssetStore {
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setInitialState: (
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viewportHeight: number,
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viewportWidth: number,
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data: AssetCountByTimeBucketResponseDto,
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userId: string | undefined,
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) => void;
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getAssetsByBucket: (bucket: string, position: BucketPosition) => Promise<void>;
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updateBucketHeight: (bucket: string, actualBucketHeight: number) => number;
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cancelBucketRequest: (token: AbortController, bucketDate: string) => Promise<void>;
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getAdjacentAsset: (assetId: string, direction: 'next' | 'previous') => Promise<string | null>;
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init: (viewport: Viewport, data: AssetCountByTimeBucket[], userId: string | undefined) => void;
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// bucket
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loadBucket: (bucket: string, position: BucketPosition) => Promise<void>;
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updateBucket: (bucket: string, actualBucketHeight: number) => number;
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cancelBucket: (bucket: AssetBucket) => void;
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// asset
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removeAsset: (assetId: string) => void;
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updateAsset: (assetId: string, isFavorite: boolean) => void;
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// asset navigation
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getNextAssetId: (assetId: string) => Promise<string | null>;
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getPreviousAssetId: (assetId: string) => Promise<string | null>;
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// store
|
||||
subscribe: (run: (value: AssetGridState) => void, invalidate?: (value?: AssetGridState) => void) => () => void;
|
||||
}
|
||||
|
||||
export function createAssetStore(): AssetStore {
|
||||
let _loadingBuckets: { [key: string]: boolean } = {};
|
||||
let _assetGridState = new AssetGridState();
|
||||
|
||||
const { subscribe, set, update } = writable(new AssetGridState());
|
||||
|
||||
subscribe((state) => {
|
||||
_assetGridState = state;
|
||||
});
|
||||
|
||||
const _estimateViewportHeight = (assetCount: number, viewportWidth: number): number => {
|
||||
// Ideally we would use the average aspect ratio for the photoset, however assume
|
||||
// a normal landscape aspect ratio of 3:2, then discount for the likelihood we
|
||||
// will be scaling down and coalescing.
|
||||
const thumbnailHeight = 235;
|
||||
const unwrappedWidth = (3 / 2) * assetCount * thumbnailHeight * (7 / 10);
|
||||
const rows = Math.ceil(unwrappedWidth / viewportWidth);
|
||||
const height = rows * thumbnailHeight;
|
||||
return height;
|
||||
};
|
||||
|
||||
const refreshLoadedAssets = (state: AssetGridState): void => {
|
||||
state.loadedAssets = {};
|
||||
state.buckets.forEach((bucket, bucketIndex) =>
|
||||
bucket.assets.map((asset) => {
|
||||
state.loadedAssets[asset.id] = bucketIndex;
|
||||
}),
|
||||
);
|
||||
};
|
||||
|
||||
const setInitialState = (
|
||||
viewportHeight: number,
|
||||
viewportWidth: number,
|
||||
data: AssetCountByTimeBucketResponseDto,
|
||||
userId: string | undefined,
|
||||
) => {
|
||||
set({
|
||||
viewportHeight,
|
||||
viewportWidth,
|
||||
timelineHeight: 0,
|
||||
buckets: data.buckets.map((bucket) => ({
|
||||
bucketDate: bucket.timeBucket,
|
||||
bucketHeight: _estimateViewportHeight(bucket.count, viewportWidth),
|
||||
assets: [],
|
||||
cancelToken: new AbortController(),
|
||||
position: BucketPosition.Unknown,
|
||||
})),
|
||||
assets: [],
|
||||
loadedAssets: {},
|
||||
userId,
|
||||
});
|
||||
|
||||
update((state) => {
|
||||
state.timelineHeight = state.buckets.reduce((acc, b) => acc + b.bucketHeight, 0);
|
||||
return state;
|
||||
});
|
||||
};
|
||||
|
||||
const getAssetsByBucket = async (bucket: string, position: BucketPosition) => {
|
||||
try {
|
||||
const currentBucketData = _assetGridState.buckets.find((b) => b.bucketDate === bucket);
|
||||
if (currentBucketData?.assets && currentBucketData.assets.length > 0) {
|
||||
update((state) => {
|
||||
const bucketIndex = state.buckets.findIndex((b) => b.bucketDate === bucket);
|
||||
state.buckets[bucketIndex].position = position;
|
||||
return state;
|
||||
});
|
||||
return;
|
||||
}
|
||||
|
||||
_loadingBuckets = { ..._loadingBuckets, [bucket]: true };
|
||||
const { data: assets } = await api.assetApi.getAssetByTimeBucket(
|
||||
{
|
||||
getAssetByTimeBucketDto: {
|
||||
timeBucket: [bucket],
|
||||
userId: _assetGridState.userId,
|
||||
withoutThumbs: true,
|
||||
},
|
||||
},
|
||||
{ signal: currentBucketData?.cancelToken.signal },
|
||||
);
|
||||
_loadingBuckets = { ..._loadingBuckets, [bucket]: false };
|
||||
|
||||
update((state) => {
|
||||
const bucketIndex = state.buckets.findIndex((b) => b.bucketDate === bucket);
|
||||
state.buckets[bucketIndex].assets = assets;
|
||||
state.buckets[bucketIndex].position = position;
|
||||
state.assets = state.buckets.flatMap((b) => b.assets);
|
||||
refreshLoadedAssets(state);
|
||||
return state;
|
||||
});
|
||||
// eslint-disable-next-line @typescript-eslint/no-explicit-any
|
||||
} catch (e: any) {
|
||||
if (e.name === 'CanceledError') {
|
||||
return;
|
||||
}
|
||||
console.error('Failed to get asset for bucket ', bucket);
|
||||
console.error(e);
|
||||
}
|
||||
};
|
||||
|
||||
const removeAsset = (assetId: string) => {
|
||||
update((state) => {
|
||||
const bucketIndex = state.buckets.findIndex((b) => b.assets.some((a) => a.id === assetId));
|
||||
const assetIndex = state.buckets[bucketIndex].assets.findIndex((a) => a.id === assetId);
|
||||
state.buckets[bucketIndex].assets.splice(assetIndex, 1);
|
||||
|
||||
if (state.buckets[bucketIndex].assets.length === 0) {
|
||||
_removeBucket(state.buckets[bucketIndex].bucketDate);
|
||||
}
|
||||
state.assets = state.buckets.flatMap((b) => b.assets);
|
||||
refreshLoadedAssets(state);
|
||||
return state;
|
||||
});
|
||||
};
|
||||
|
||||
const _removeBucket = (bucketDate: string) => {
|
||||
update((state) => {
|
||||
const bucketIndex = state.buckets.findIndex((b) => b.bucketDate === bucketDate);
|
||||
state.buckets.splice(bucketIndex, 1);
|
||||
state.assets = state.buckets.flatMap((b) => b.assets);
|
||||
refreshLoadedAssets(state);
|
||||
return state;
|
||||
});
|
||||
};
|
||||
|
||||
const updateBucketHeight = (bucket: string, actualBucketHeight: number): number => {
|
||||
let scrollTimeline = false;
|
||||
let heightDelta = 0;
|
||||
|
||||
update((state) => {
|
||||
const bucketIndex = state.buckets.findIndex((b) => b.bucketDate === bucket);
|
||||
// Update timeline height based on the new bucket height
|
||||
const estimateBucketHeight = state.buckets[bucketIndex].bucketHeight;
|
||||
|
||||
heightDelta = actualBucketHeight - estimateBucketHeight;
|
||||
state.timelineHeight += heightDelta;
|
||||
|
||||
scrollTimeline = state.buckets[bucketIndex].position == BucketPosition.Above;
|
||||
|
||||
state.buckets[bucketIndex].bucketHeight = actualBucketHeight;
|
||||
state.buckets[bucketIndex].position = BucketPosition.Unknown;
|
||||
|
||||
return state;
|
||||
});
|
||||
|
||||
if (scrollTimeline) {
|
||||
return heightDelta;
|
||||
}
|
||||
|
||||
return 0;
|
||||
};
|
||||
|
||||
const cancelBucketRequest = async (token: AbortController, bucketDate: string) => {
|
||||
if (!_loadingBuckets[bucketDate]) {
|
||||
return;
|
||||
}
|
||||
|
||||
token.abort();
|
||||
|
||||
update((state) => {
|
||||
const bucketIndex = state.buckets.findIndex((b) => b.bucketDate === bucketDate);
|
||||
state.buckets[bucketIndex].cancelToken = new AbortController();
|
||||
return state;
|
||||
});
|
||||
};
|
||||
|
||||
const updateAsset = (assetId: string, isFavorite: boolean) => {
|
||||
update((state) => {
|
||||
const bucketIndex = state.buckets.findIndex((b) => b.assets.some((a) => a.id === assetId));
|
||||
const assetIndex = state.buckets[bucketIndex].assets.findIndex((a) => a.id === assetId);
|
||||
state.buckets[bucketIndex].assets[assetIndex].isFavorite = isFavorite;
|
||||
|
||||
state.assets = state.buckets.flatMap((b) => b.assets);
|
||||
refreshLoadedAssets(state);
|
||||
return state;
|
||||
});
|
||||
};
|
||||
|
||||
const _getNextAsset = async (currentBucketIndex: number, assetId: string): Promise<AssetResponseDto | null> => {
|
||||
const currentBucket = _assetGridState.buckets[currentBucketIndex];
|
||||
const assetIndex = currentBucket.assets.findIndex(({ id }) => id == assetId);
|
||||
if (assetIndex === -1) {
|
||||
return null;
|
||||
}
|
||||
|
||||
if (assetIndex + 1 < currentBucket.assets.length) {
|
||||
return currentBucket.assets[assetIndex + 1];
|
||||
}
|
||||
|
||||
const nextBucketIndex = currentBucketIndex + 1;
|
||||
if (nextBucketIndex >= _assetGridState.buckets.length) {
|
||||
return null;
|
||||
}
|
||||
|
||||
const nextBucket = _assetGridState.buckets[nextBucketIndex];
|
||||
await getAssetsByBucket(nextBucket.bucketDate, BucketPosition.Unknown);
|
||||
|
||||
return nextBucket.assets[0] ?? null;
|
||||
};
|
||||
|
||||
const _getPrevAsset = async (currentBucketIndex: number, assetId: string): Promise<AssetResponseDto | null> => {
|
||||
const currentBucket = _assetGridState.buckets[currentBucketIndex];
|
||||
const assetIndex = currentBucket.assets.findIndex(({ id }) => id == assetId);
|
||||
if (assetIndex === -1) {
|
||||
return null;
|
||||
}
|
||||
|
||||
if (assetIndex > 0) {
|
||||
return currentBucket.assets[assetIndex - 1];
|
||||
}
|
||||
|
||||
const prevBucketIndex = currentBucketIndex - 1;
|
||||
if (prevBucketIndex < 0) {
|
||||
return null;
|
||||
}
|
||||
|
||||
const prevBucket = _assetGridState.buckets[prevBucketIndex];
|
||||
await getAssetsByBucket(prevBucket.bucketDate, BucketPosition.Unknown);
|
||||
|
||||
return prevBucket.assets[prevBucket.assets.length - 1] ?? null;
|
||||
};
|
||||
|
||||
const getAdjacentAsset = async (assetId: string, direction: 'next' | 'previous'): Promise<string | null> => {
|
||||
const currentBucketIndex = _assetGridState.loadedAssets[assetId];
|
||||
if (currentBucketIndex < 0 || currentBucketIndex >= _assetGridState.buckets.length) {
|
||||
return null;
|
||||
}
|
||||
|
||||
const asset =
|
||||
direction === 'next'
|
||||
? await _getNextAsset(currentBucketIndex, assetId)
|
||||
: await _getPrevAsset(currentBucketIndex, assetId);
|
||||
|
||||
return asset?.id ?? null;
|
||||
};
|
||||
const store = new AssetGridState();
|
||||
|
||||
return {
|
||||
setInitialState,
|
||||
getAssetsByBucket,
|
||||
removeAsset,
|
||||
updateBucketHeight,
|
||||
cancelBucketRequest,
|
||||
getAdjacentAsset,
|
||||
updateAsset,
|
||||
subscribe,
|
||||
init: store.init.bind(store),
|
||||
loadBucket: store.loadBucket.bind(store),
|
||||
updateBucket: store.updateBucket.bind(store),
|
||||
cancelBucket: store.cancelBucket.bind(store),
|
||||
removeAsset: store.removeAsset.bind(store),
|
||||
updateAsset: store.updateAsset.bind(store),
|
||||
getNextAssetId: store.getNextAssetId.bind(store),
|
||||
getPreviousAssetId: store.getPreviousAssetId.bind(store),
|
||||
subscribe: store.subscribe,
|
||||
};
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user