stacker.news/components/items.js

96 lines
2.7 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'
const DEFAULT_FILTER = () => true
const DEFAULT_VARIABLES = {}
export default function Items ({ ssrData, variables = DEFAULT_VARIABLES, query, destructureData, rank, noMoreText, Footer, filter = DEFAULT_FILTER }) {
const { data, fetchMore } = useQuery(query || SUB_ITEMS, { variables })
const Foooter = Footer || MoreFooter
const dat = useData(data, ssrData)
const { items, pins, ad, cursor } = useMemo(() => {
if (!dat) return {}
if (destructureData) {
return destructureData(dat)
} else {
return dat?.items
}
}, [dat])
const itemsWithPins = useMemo(() => {
if (!pins) return items
const res = [...items]
pins?.forEach(p => {
if (p.position <= res.length) {
res.splice(p.position - 1, 0, p)
} else {
res.push(p)
}
})
return res
}, [pins, items])
const Skeleton = useCallback(() =>
<ItemsSkeleton rank={rank} startRank={items?.length} limit={variables.limit} Footer={Foooter} />, [rank, items])
if (!dat) {
return <Skeleton />
}
const isHome = !variables?.sub
return (
<>
<div className={styles.grid}>
{ad && <ListItem item={ad} ad />}
{itemsWithPins.filter(filter).map((item, i) => (
<ListItem key={`${item.id}-${i + 1}`} item={item} rank={rank && i + 1} itemClassName={variables.includeComments ? 'py-2' : ''} pinnable={isHome ? false : pins?.length > 0} />
))}
</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 {...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, Footer }) {
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>
<Footer invisible cursor />
</>
)
}