src/routes/models/+layout.svelte

<script lang="ts">
	import { browser } from "$app/environment";
	import InfiniteScroll from "svelte-infinite-scroll";
	import { page } from "$app/stores";
	import { onMount } from "svelte";

	import { goto } from "$app/navigation";
	import Button from "$lib/components/Button.svelte";
	import Card from "$lib/components/models/Card.svelte";
	import Input from "$lib/components/fields/Input.svelte";
	import Radio from "$lib/components/fields/Radio.svelte";
	import { MODELS_FILTER_OPTIONS } from "$lib/utils/index.js";
	import GoTop from "$lib/components/GoTop.svelte";
	import Drawer from "$lib/components/models/drawer/Drawer.svelte";
	import type { ModelCard } from "$lib/type";
	import { userStore } from "$lib/stores/use-user";

	let data: {
		models: ModelCard[],
		total_items: number,
	} = {
		models: [],
		total_items: 0,
	}

	let form: Record<string, string> = {
		filter: $page.url.searchParams.get('filter') ?? "hotest",
		search: $page.url.searchParams.get('search') ?? "",
		base_model: $page.url.searchParams.get('base_model') ?? "",
		page: "0"
	}
	let submitModelDialog = false;

	onMount(() => {
		refetch(false);
	});

	$: elementScroll = browser ? document?.getElementById('app') : undefined;

	const handleFetchMore = async () => {
		form.page = (Number(form.page) + 1).toString();
		refetch(true);
	}
	const handleChangeFilter = async (filter: string) => {
		form.filter = filter;
		form.page = "0";
		$page.url.searchParams.set('filter', filter);
		await goto(`?${$page.url.searchParams.toString()}`);
		refetch(false);
	}
	const handleChangeBaseModel = async (event: any) => {
		const base_model = event.target.value
		form.base_model = base_model;
		$page.url.searchParams.set('base_model', base_model);
		await goto(`?${$page.url.searchParams.toString()}`);
		refetch(false);
	}

	let timeout: any;
	const handleChangeSearch = async (search: string) => {
		clearTimeout(timeout);
		form.search = search;
		form.page = "0";
		timeout = setTimeout(async () => {
			if (search === "") $page.url.searchParams.delete('search');
			else $page.url.searchParams.set('search', search);
			await goto(`?${$page.url.searchParams.toString()}`);
			refetch(false);
		}, 500);
	}
	
	const refetch = async (add: boolean) => {
		const request = await fetch(`/api/models?${new URLSearchParams({...form })}`);
		const response = await request.json();
		if (add) data.models = [...data.models, ...response.cards] as any[];
		else {
			data.models = response.cards;
			data.total_items = response.total_items;
		}
	}

</script>

<main class="px-6 py-10 lg:px-10 lg:py-12 relative">
	<Drawer onSearch={handleChangeSearch} />
	<h1 class="text-white font-semibold text-2xl">
		Explore Models ({data?.total_items ?? 0})
	</h1>
	<div class="bg-cyan-500/20 max-w-xl border-2 border-cyan-500/30 w-full p-3 text-white rounded-lg mt-4">
		<p class="font-semibold">FLUX LoRAs are here! ✨</p>
		<p class="opacity-70 text-sm">
			We are excited to announce the arrival of the first FLUX models on LoRA Studio.
		</p>
	</div>
	<div class="flex items-start sm:items-center justify-between mt-5 flex-col sm:flex-row gap-5 sm:justify-between">
		<Radio
			options={[
				...MODELS_FILTER_OPTIONS,
				...($userStore?.is_admin ? [
					{
					label: "Staff only",
					value: "staff_only",
					icon: "lets-icons:view-hide-fill",
					iconColor: "text-yellow-500"
				}
				] : [])
			]}
			value="{form.filter}"
			onChange={handleChangeFilter}
		/>
		<div class="items-center justify-end gap-5 hidden lg:flex">
			<Button href="https://huggingface.co/new/stable-diffusion-lora" target="_blank" icon="ic:round-plus" theme="dark" size="lg">Upload</Button>
				<Button
					icon="octicon:upload-16"
					theme="blue"
					target="_blank"
					href="https://huggingface.co/spaces/multimodalart/civitai-to-hf"
					size="lg"
				>
					Migrate
				</Button>
		</div>
		<div class="items-center justify-end gap-3 flex lg:hidden">
			<Button href="https://huggingface.co/new/stable-diffusion-lora" target="_blank" icon="ic:round-plus" theme="dark" size="md">Create</Button>
			<Button
					icon="octicon:upload-16"
					theme="blue"
					target="_blank"
					href="https://huggingface.co/spaces/multimodalart/civitai-to-hf"
					size="md"
				>
					Migrate
				</Button>
		</div>
	</div>
	<div class="mt-5 max-w-sm flex items-center justify-start gap-5 w-full">
		<Input value={form.search} className="lg:min-w-[300px]" placeholder="Filter by model name" onChange={handleChangeSearch} />
		<div class="flex flex-col items-start justify-center gap-1.5">
			<p class="text-xs text-white/60 whitespace-nowrap flex items-center justify-start gap-2">
				Filter by
				<span class="relative">
					<span class="w-2 h-2 rounded-full block bg-cyan-500"></span>
					<span class="w-2 h-2 rounded-full block bg-cyan-500 animate-ping absolute top-0 left-0"></span>
				</span>
			</p>
			<select value={form.base_model} class="text-white bg-transparent outline-none cursor-pointer" on:change={handleChangeBaseModel}>
				<option value="">
					All models
				</option>
				<option value="flux">
					Flux
				</option>
				<option value="sd3">
					Stable Diffusion 3
				</option>
				<option value="sdxl">
					Stable Diffusion XL
				</option>
				<option value="sd1">
					Stable Diffusion 1
				</option>
			</select>
		</div>
	</div>
	<div class="mx-auto grid grid-cols-1 sm:grid-cols-2 md:grid-cols-3 2xl:grid-cols-4 gap-5 mt-8 lg:mt-10">
		{#each data.models as card (card.id)}
			<Card card={card} />
		{/each}
		{#if data.models.length === 0}
			<p class="text-neutral-400 text-left w-full">No models found</p>
		{/if}
		<InfiniteScroll
			elementScroll="{elementScroll ?? undefined}"
			threshold={100}
			hasMore={data.total_items > data.models.length}
			on:loadMore={handleFetchMore}
		/>
		<GoTop />
	</div>
	<slot />
</main>