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import React from 'react'
import {StyleSheet, View} from 'react-native'
import {FeedPostSlice} from '#/state/queries/post-feed'
import {AtUri, moderatePost, ModerationOpts} from '@atproto/api'
import {Link} from '../util/Link'
import {Text} from '../util/text/Text'
import Svg, {Circle, Line} from 'react-native-svg'
import {FeedItem} from './FeedItem'
import {usePalette} from 'lib/hooks/usePalette'
import {makeProfileLink} from 'lib/routes/links'
export function FeedSlice({
slice,
dataUpdatedAt,
ignoreFilterFor,
moderationOpts,
}: {
slice: FeedPostSlice
dataUpdatedAt: number
ignoreFilterFor?: string
moderationOpts: ModerationOpts
}) {
const moderations = React.useMemo(() => {
return slice.items.map(item => moderatePost(item.post, moderationOpts))
}, [slice, moderationOpts])
// apply moderation filter
for (let i = 0; i < slice.items.length; i++) {
if (
moderations[i]?.content.filter &&
slice.items[i].post.author.did !== ignoreFilterFor
) {
return null
}
}
if (slice.isThread && slice.items.length > 3) {
const last = slice.items.length - 1
return (
<>
<FeedItem
key={slice.items[0]._reactKey}
post={slice.items[0].post}
record={slice.items[0].record}
reason={slice.items[0].reason}
moderation={moderations[0]}
dataUpdatedAt={dataUpdatedAt}
isThreadParent={isThreadParentAt(slice.items, 0)}
isThreadChild={isThreadChildAt(slice.items, 0)}
/>
<FeedItem
key={slice.items[1]._reactKey}
post={slice.items[1].post}
record={slice.items[1].record}
reason={slice.items[1].reason}
moderation={moderations[1]}
dataUpdatedAt={dataUpdatedAt}
isThreadParent={isThreadParentAt(slice.items, 1)}
isThreadChild={isThreadChildAt(slice.items, 1)}
/>
<ViewFullThread slice={slice} />
<FeedItem
key={slice.items[last]._reactKey}
post={slice.items[last].post}
record={slice.items[last].record}
reason={slice.items[last].reason}
moderation={moderations[last]}
dataUpdatedAt={dataUpdatedAt}
isThreadParent={isThreadParentAt(slice.items, last)}
isThreadChild={isThreadChildAt(slice.items, last)}
isThreadLastChild
/>
</>
)
}
return (
<>
{slice.items.map((item, i) => (
<FeedItem
key={item._reactKey}
post={slice.items[i].post}
record={slice.items[i].record}
reason={slice.items[i].reason}
moderation={moderations[i]}
dataUpdatedAt={dataUpdatedAt}
isThreadParent={isThreadParentAt(slice.items, i)}
isThreadChild={isThreadChildAt(slice.items, i)}
isThreadLastChild={
isThreadChildAt(slice.items, i) && slice.items.length === i + 1
}
/>
))}
</>
)
}
function ViewFullThread({slice}: {slice: FeedPostSlice}) {
const pal = usePalette('default')
const itemHref = React.useMemo(() => {
const urip = new AtUri(slice.rootUri)
return makeProfileLink({did: urip.hostname, handle: ''}, 'post', urip.rkey)
}, [slice.rootUri])
return (
<Link
style={[pal.view, styles.viewFullThread]}
href={itemHref}
asAnchor
noFeedback>
<View style={styles.viewFullThreadDots}>
<Svg width="4" height="40">
<Line
x1="2"
y1="0"
x2="2"
y2="15"
stroke={pal.colors.replyLine}
strokeWidth="2"
/>
<Circle cx="2" cy="22" r="1.5" fill={pal.colors.replyLineDot} />
<Circle cx="2" cy="28" r="1.5" fill={pal.colors.replyLineDot} />
<Circle cx="2" cy="34" r="1.5" fill={pal.colors.replyLineDot} />
</Svg>
</View>
<Text type="md" style={[pal.link, {paddingTop: 18, paddingBottom: 4}]}>
View full thread
</Text>
</Link>
)
}
const styles = StyleSheet.create({
viewFullThread: {
flexDirection: 'row',
gap: 10,
paddingLeft: 18,
},
viewFullThreadDots: {
width: 52,
alignItems: 'center',
},
})
function isThreadParentAt<T>(arr: Array<T>, i: number) {
if (arr.length === 1) {
return false
}
return i < arr.length - 1
}
function isThreadChildAt<T>(arr: Array<T>, i: number) {
if (arr.length === 1) {
return false
}
return i > 0
}
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