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<script lang="ts">
import { onMount } from 'svelte';
import type { Artwork } from '@jet-app/app-store/api/models';
import AppIcon, { type AppIconProfile } from '~/components/AppIcon.svelte';
export let icons: Artwork[];
export let profile: AppIconProfile = 'app-icon-river';
$: aspectRatio = icons[0].width / icons[0].height;
let mounted = false;
const numberOfIcons = icons.length;
// We shift the order of the bottom row of icons to ensure that the same icons aren't shown
// next to each other. Note that this is different from purely shuffling the icons, as that
// could still lead to the same icons being next to one another, due to how small the set is.
// The input and output here is as such:
// in = [1, 2, 3, 4, 5, 6, 7]
// out = [4, 5, 6, 7, 1, 2, 3]
const iconsInShiftedOrder = [
...icons.slice(numberOfIcons / 2),
...icons.slice(0, numberOfIcons / 2),
];
// We are quadrupling the icons we render so the flow is seamless and stretches across the
// full width of the container.
const topRow = Array(4).fill(icons).flat();
const bottomRow = Array(4).fill(iconsInShiftedOrder).flat();
// We use this `mounted` flag to defer the rendering of the `AppIconRiver`, since it's markup heavy
// and has no semantic meaning for SEO. This deferring saves about 190kb of initial HTML per instance.
onMount(() => (mounted = true));
</script>
{#if mounted}
{#each [topRow, bottomRow] as iconRow}
<ul class="app-icons">
{#each iconRow as icon}
<li
class="app-icon-container"
style:--aspect-ratio={aspectRatio}
>
<AppIcon {icon} {profile} fixedWidth={false} />
</li>
{/each}
</ul>
{/each}
{/if}
<style lang="scss">
@use '@amp/web-shared-styles/sasskit-stylekit/ac-sasskit-config';
@use 'ac-sasskit/core/locale' as *;
.app-icons {
--icon-width: var(--app-icon-river-icon-width, 128px);
--speed: var(--app-icon-river-speed, 240s);
--direction: -50%;
@include rtl {
--direction: 50%;
}
display: flex;
width: fit-content;
z-index: 2;
animation: scroll var(--speed) linear infinite;
}
.app-icons:last-of-type {
margin-bottom: 20px;
}
.app-icon-container {
width: var(--icon-width);
aspect-ratio: var(--aspect-ratio);
margin: 8px;
}
.app-icons:last-of-type .app-icon-container {
position: relative;
right: calc((var(--icon-width) / 2) + 8px);
}
@keyframes scroll {
0% {
transform: translateX(0);
}
100% {
transform: translateX(var(--direction));
}
}
</style>
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