132 lines
4.4 KiB
TypeScript
132 lines
4.4 KiB
TypeScript
import { NDKEvent, NDKKind } from '@nostr-dev-kit/ndk';
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import { useInfiniteQuery } from '@tanstack/react-query';
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import { useVirtualizer } from '@tanstack/react-virtual';
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import { useCallback, useMemo, useRef } from 'react';
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import { useStorage } from '@libs/storage/provider';
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import { ArrowRightCircleIcon, LoaderIcon } from '@shared/icons';
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import { FileNote, NoteSkeleton, NoteWrapper } from '@shared/notes';
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import { TitleBar } from '@shared/titleBar';
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import { WidgetWrapper } from '@shared/widgets';
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import { DBEvent, Widget } from '@utils/types';
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export function LocalArticlesWidget({ params }: { params: Widget }) {
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const { db } = useStorage();
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const { status, data, hasNextPage, isFetchingNextPage, fetchNextPage } =
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useInfiniteQuery({
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queryKey: [params.id + '-' + params.title],
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queryFn: async ({ pageParam = 0 }) => {
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return await db.getAllEventsByKinds([NDKKind.Article], 20, pageParam);
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},
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getNextPageParam: (lastPage) => lastPage.nextCursor,
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});
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const dbEvents = useMemo(
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() => (data ? data.pages.flatMap((d: { data: DBEvent[] }) => d.data) : []),
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[data]
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);
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const parentRef = useRef<HTMLDivElement>();
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const virtualizer = useVirtualizer({
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count: hasNextPage ? dbEvents.length : dbEvents.length,
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getScrollElement: () => parentRef.current,
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estimateSize: () => 650,
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overscan: 4,
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});
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const items = virtualizer.getVirtualItems();
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// render event match event kind
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const renderItem = useCallback(
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(index: string | number) => {
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const event: NDKEvent = data[index];
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if (!event) return;
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return (
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<div key={event.id} data-index={index} ref={virtualizer.measureElement}>
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<NoteWrapper event={event}>
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<FileNote event={event} />
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</NoteWrapper>
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</div>
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);
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},
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[data]
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);
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return (
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<WidgetWrapper>
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<TitleBar id={params.id} title={params.title} />
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<div ref={parentRef} className="scrollbar-hide h-full overflow-y-auto pb-20">
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{status === 'loading' ? (
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<div className="px-3 py-1.5">
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<div className="rounded-xl bg-white/10 px-3 py-3 backdrop-blur-xl">
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<NoteSkeleton />
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</div>
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</div>
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) : items.length === 0 ? (
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<div className="px-3 py-1.5">
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<div className="bbg-white/10 rounded-xl px-3 py-6 backdrop-blur-xl">
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<div className="flex flex-col items-center gap-4">
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<p className="text-center text-sm text-white">
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There have been no new posts.
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</p>
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</div>
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</div>
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</div>
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) : (
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<div
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style={{
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position: 'relative',
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width: '100%',
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height: `${virtualizer.getTotalSize()}px`,
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}}
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>
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<div
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className="absolute left-0 top-0 w-full"
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style={{
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transform: `translateY(${items[0].start}px)`,
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}}
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>
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{items.map((item) => renderItem(item.index))}
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</div>
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</div>
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)}
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{isFetchingNextPage && (
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<div className="px-3 py-1.5">
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<div className="rounded-xl bg-white/10 px-3 py-3 backdrop-blur-xl">
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<NoteSkeleton />
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</div>
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</div>
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)}
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<div className="px-3 py-1.5">
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<button
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onClick={() => fetchNextPage()}
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disabled={!hasNextPage || isFetchingNextPage}
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className="inline-flex h-11 w-full items-center justify-between gap-2 rounded-lg bg-fuchsia-500 px-6 font-medium leading-none text-white hover:bg-fuchsia-600 focus:outline-none"
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>
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{isFetchingNextPage ? (
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<>
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<span className="w-5" />
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<span>Loading...</span>
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<LoaderIcon className="h-5 w-5 animate-spin text-white" />
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</>
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) : hasNextPage ? (
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<>
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<span className="w-5" />
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<span>Load more</span>
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<ArrowRightCircleIcon className="h-5 w-5" />
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</>
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) : (
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<>
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<span className="w-5" />
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<span>Nothing more to load</span>
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<ArrowRightCircleIcon className="h-5 w-5" />
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</>
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)}
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</button>
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</div>
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</div>
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</WidgetWrapper>
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);
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}
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