Files
lume/src/shared/widgets/local/files.tsx
Ren Amamiya b339e842ca perf improve
2023-09-27 08:32:19 +07:00

104 lines
3.7 KiB
TypeScript

import { NDKEvent } from '@nostr-dev-kit/ndk';
import { useInfiniteQuery } from '@tanstack/react-query';
import { useCallback, useMemo } from 'react';
import { VList } from 'virtua';
import { useStorage } from '@libs/storage/provider';
import { ArrowRightCircleIcon, LoaderIcon } from '@shared/icons';
import { FileNote, NoteSkeleton, NoteWrapper } from '@shared/notes';
import { TitleBar } from '@shared/titleBar';
import { WidgetWrapper } from '@shared/widgets';
import { DBEvent, Widget } from '@utils/types';
export function LocalFilesWidget({ params }: { params: Widget }) {
const { db } = useStorage();
const { status, data, hasNextPage, isFetchingNextPage, fetchNextPage } =
useInfiniteQuery({
queryKey: [params.id + '-' + params.title],
queryFn: async ({ pageParam = 0 }) => {
return await db.getAllEventsByKinds([1063], 20, pageParam);
},
getNextPageParam: (lastPage) => lastPage.nextCursor,
});
const dbEvents = useMemo(
() => (data ? data.pages.flatMap((d: { data: DBEvent[] }) => d.data) : []),
[data]
);
// render event match event kind
const renderItem = useCallback(
(dbEvent: DBEvent) => {
const event: NDKEvent = JSON.parse(dbEvent.event as string);
return (
<NoteWrapper key={event.id} event={event}>
<FileNote />
</NoteWrapper>
);
},
[data]
);
return (
<WidgetWrapper>
<TitleBar id={params.id} title={params.title} />
<div className="h-full">
{status === 'loading' ? (
<div className="px-3 py-1.5">
<div className="rounded-xl bg-white/10 px-3 py-3 backdrop-blur-xl">
<NoteSkeleton />
</div>
</div>
) : dbEvents.length === 0 ? (
<div className="flex h-full w-full flex-col items-center justify-center px-3">
<div className="flex flex-col items-center gap-4">
<img src="/ghost.png" alt="empty feeds" className="h-16 w-16" />
<div className="text-center">
<h3 className="text-xl font-semibold leading-tight">
Your newsfeed is empty
</h3>
<p className="text-center text-white/50">
Connect more people to explore more content
</p>
</div>
</div>
</div>
) : (
<VList className="scrollbar-hide h-full">
{dbEvents.map((item) => renderItem(item))}
<div className="flex items-center justify-center px-3 py-1.5">
{dbEvents.length > 0 ? (
<button
onClick={() => fetchNextPage()}
disabled={!hasNextPage || isFetchingNextPage}
className="inline-flex h-10 w-max items-center justify-center gap-2 rounded-full bg-fuchsia-500 px-6 font-medium leading-none text-white hover:bg-fuchsia-600 focus:outline-none"
>
{isFetchingNextPage ? (
<>
<span>Loading...</span>
<LoaderIcon className="h-5 w-5 animate-spin text-white" />
</>
) : hasNextPage ? (
<>
<ArrowRightCircleIcon className="h-5 w-5 text-white" />
<span>Load more</span>
</>
) : (
<>
<ArrowRightCircleIcon className="h-5 w-5 text-white" />
<span>Nothing more to load</span>
</>
)}
</button>
) : null}
</div>
<div className="h-16" />
</VList>
)}
</div>
</WidgetWrapper>
);
}