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FictionArchive/fictionarchive-web-astro/src/lib/components/NovelsPage.svelte

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Svelte

<script lang="ts">
import { onMount } from 'svelte';
import { client } from '$lib/graphql/client';
import { NovelsDocument, type NovelsQuery } from '$lib/graphql/__generated__/graphql';
import NovelCard from './NovelCard.svelte';
import { Button } from '$lib/components/ui/button';
import { Card, CardContent, CardHeader, CardTitle } from '$lib/components/ui/card';
const PAGE_SIZE = 12;
type NovelEdge = NonNullable<NovelsQuery['novels']>['edges'][number];
let edges: NovelEdge[] = $state([]);
let pageInfo: NonNullable<NovelsQuery['novels']>['pageInfo'] | null = $state(null);
let fetching = $state(false);
let error: string | null = $state(null);
let initialLoad = $state(true);
const hasNextPage = $derived(pageInfo?.hasNextPage ?? false);
const novels = $derived(edges.map((edge) => edge.node).filter(Boolean));
async function fetchNovels(after: string | null = null) {
fetching = true;
error = null;
try {
const result = await client.query(NovelsDocument, { first: PAGE_SIZE, after }).toPromise();
if (result.error) {
error = result.error.message;
return;
}
if (result.data?.novels) {
if (after) {
// Append for pagination
edges = [...edges, ...result.data.novels.edges];
} else {
// Initial load
edges = result.data.novels.edges;
}
pageInfo = result.data.novels.pageInfo;
}
} catch (e) {
error = e instanceof Error ? e.message : 'Unknown error';
} finally {
fetching = false;
initialLoad = false;
}
}
function loadMore() {
if (pageInfo?.endCursor) {
fetchNovels(pageInfo.endCursor);
}
}
onMount(() => {
fetchNovels();
});
</script>
<div class="space-y-4">
<Card class="shadow-md shadow-primary/10">
<CardHeader>
<CardTitle>Latest Novels</CardTitle>
<p class="text-sm text-muted-foreground">Novels that have recently been updated.</p>
</CardHeader>
</Card>
{#if fetching && initialLoad}
<Card>
<CardContent>
<div class="flex items-center justify-center py-8">
<div
class="h-10 w-10 animate-spin rounded-full border-2 border-primary border-t-transparent"
aria-label="Loading novels"
></div>
</div>
</CardContent>
</Card>
{/if}
{#if error}
<Card class="border-destructive/40 bg-destructive/5">
<CardContent>
<p class="py-4 text-sm text-destructive">Could not load novels: {error}</p>
</CardContent>
</Card>
{/if}
{#if !fetching && novels.length === 0 && !error && !initialLoad}
<Card>
<CardContent>
<p class="py-4 text-sm text-muted-foreground">
No novels found yet. Try adding content to the gateway.
</p>
</CardContent>
</Card>
{/if}
{#if novels.length > 0}
<div class="grid gap-4 sm:grid-cols-2 lg:grid-cols-3">
{#each novels as novel (novel.id)}
<NovelCard {novel} />
{/each}
</div>
{/if}
{#if hasNextPage}
<div class="flex justify-center">
<Button onclick={loadMore} variant="outline" disabled={fetching} class="min-w-[160px]">
{fetching ? 'Loading...' : 'Load more'}
</Button>
</div>
{/if}
</div>