stacker.news/components/items.js

79 lines
2.3 KiB
JavaScript

import { useQuery } from '@apollo/client'
import Item, { ItemSkeleton } from './item'
import ItemJob from './item-job'
import styles from './items.module.css'
import MoreFooter from './more-footer'
import { Fragment, useCallback, useMemo } from 'react'
import { CommentFlat } from './comment'
import { SUB_ITEMS } from '../fragments/subs'
import { LIMIT } from '../lib/cursor'
import ItemFull from './item-full'
import { useData } from './use-data'
export default function Items ({ ssrData, variables = {}, query, destructureData, rank, noMoreText, Footer, filter = () => true }) {
const { data, fetchMore } = useQuery(query || SUB_ITEMS, { variables })
const Foooter = Footer || MoreFooter
const dat = useData(data, ssrData)
const { items, pins, cursor } = useMemo(() => {
if (!dat) return {}
if (destructureData) {
return destructureData(dat)
} else {
return dat?.items
}
}, [dat])
const pinMap = useMemo(() =>
pins?.reduce((a, p) => { a[p.position] = p; return a }, {}), [pins])
const Skeleton = useCallback(() =>
<ItemsSkeleton rank={rank} startRank={items?.length} limit={variables.limit} />, [rank, items])
if (!dat) {
return <Skeleton />
}
return (
<>
<div className={styles.grid}>
{items.filter(filter).map((item, i) => (
<Fragment key={item.id}>
{pinMap && pinMap[i + 1] && <Item item={pinMap[i + 1]} />}
<ListItem item={item} rank={rank && i + 1} siblingComments={variables.includeComments} />
</Fragment>
))}
</div>
<Foooter
cursor={cursor} fetchMore={fetchMore} noMoreText={noMoreText}
count={items?.length}
Skeleton={Skeleton}
/>
</>
)
}
export function ListItem ({ item, ...props }) {
return (
item.parentId
? <CommentFlat item={item} noReply includeParent clickToContext {...props} />
: (item.isJob
? <ItemJob item={item} />
: (item.searchText
? <ItemFull item={item} noReply {...props} />
: <Item item={item} {...props} />))
)
}
export function ItemsSkeleton ({ rank, startRank = 0, limit = LIMIT }) {
const items = new Array(limit).fill(null)
return (
<div className={styles.grid}>
{items.map((_, i) => (
<ItemSkeleton rank={rank && i + startRank + 1} key={i + startRank} />
))}
</div>
)
}