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import React, {useCallback, useMemo} from 'react'
import {StyleSheet, View} from 'react-native'
import {useAnimatedRef} from 'react-native-reanimated'
import {msg, Trans} from '@lingui/macro'
import {useLingui} from '@lingui/react'
import {useIsFocused, useNavigation} from '@react-navigation/native'
import {NativeStackScreenProps} from '@react-navigation/native-stack'
import {useQueryClient} from '@tanstack/react-query'
import {usePalette} from '#/lib/hooks/usePalette'
import {useSetTitle} from '#/lib/hooks/useSetTitle'
import {ComposeIcon2} from '#/lib/icons'
import {CommonNavigatorParams} from '#/lib/routes/types'
import {NavigationProp} from '#/lib/routes/types'
import {makeRecordUri} from '#/lib/strings/url-helpers'
import {s} from '#/lib/styles'
import {isNative} from '#/platform/detection'
import {listenSoftReset} from '#/state/events'
import {FeedFeedbackProvider, useFeedFeedback} from '#/state/feed-feedback'
import {FeedSourceFeedInfo, useFeedSourceInfoQuery} from '#/state/queries/feed'
import {FeedDescriptor} from '#/state/queries/post-feed'
import {RQKEY as FEED_RQKEY} from '#/state/queries/post-feed'
import {
usePreferencesQuery,
UsePreferencesQueryResponse,
} from '#/state/queries/preferences'
import {useResolveUriQuery} from '#/state/queries/resolve-uri'
import {truncateAndInvalidate} from '#/state/queries/util'
import {useSession} from '#/state/session'
import {useComposerControls} from '#/state/shell/composer'
import {PostFeed} from '#/view/com/posts/PostFeed'
import {EmptyState} from '#/view/com/util/EmptyState'
import {FAB} from '#/view/com/util/fab/FAB'
import {Button} from '#/view/com/util/forms/Button'
import {ListRef} from '#/view/com/util/List'
import {LoadLatestBtn} from '#/view/com/util/load-latest/LoadLatestBtn'
import {LoadingScreen} from '#/view/com/util/LoadingScreen'
import {Text} from '#/view/com/util/text/Text'
import {ProfileFeedHeader} from '#/screens/Profile/components/ProfileFeedHeader'
import * as Layout from '#/components/Layout'
type Props = NativeStackScreenProps<CommonNavigatorParams, 'ProfileFeed'>
export function ProfileFeedScreen(props: Props) {
const {rkey, name: handleOrDid} = props.route.params
const pal = usePalette('default')
const {_} = useLingui()
const navigation = useNavigation<NavigationProp>()
const uri = useMemo(
() => makeRecordUri(handleOrDid, 'app.bsky.feed.generator', rkey),
[rkey, handleOrDid],
)
const {error, data: resolvedUri} = useResolveUriQuery(uri)
const onPressBack = React.useCallback(() => {
if (navigation.canGoBack()) {
navigation.goBack()
} else {
navigation.navigate('Home')
}
}, [navigation])
if (error) {
return (
<Layout.Screen testID="profileFeedScreenError">
<Layout.Content>
<View style={[pal.view, pal.border, styles.notFoundContainer]}>
<Text type="title-lg" style={[pal.text, s.mb10]}>
<Trans>Could not load feed</Trans>
</Text>
<Text type="md" style={[pal.text, s.mb20]}>
{error.toString()}
</Text>
<View style={{flexDirection: 'row'}}>
<Button
type="default"
accessibilityLabel={_(msg`Go back`)}
accessibilityHint={_(msg`Returns to previous page`)}
onPress={onPressBack}
style={{flexShrink: 1}}>
<Text type="button" style={pal.text}>
<Trans>Go Back</Trans>
</Text>
</Button>
</View>
</View>
</Layout.Content>
</Layout.Screen>
)
}
return resolvedUri ? (
<Layout.Screen noInsetTop>
<ProfileFeedScreenIntermediate feedUri={resolvedUri.uri} />
</Layout.Screen>
) : (
<Layout.Screen>
<LoadingScreen />
</Layout.Screen>
)
}
function ProfileFeedScreenIntermediate({feedUri}: {feedUri: string}) {
const {data: preferences} = usePreferencesQuery()
const {data: info} = useFeedSourceInfoQuery({uri: feedUri})
if (!preferences || !info) {
return <LoadingScreen />
}
return (
<ProfileFeedScreenInner
preferences={preferences}
feedInfo={info as FeedSourceFeedInfo}
/>
)
}
export function ProfileFeedScreenInner({
feedInfo,
}: {
preferences: UsePreferencesQueryResponse
feedInfo: FeedSourceFeedInfo
}) {
const {_} = useLingui()
const {hasSession} = useSession()
const {openComposer} = useComposerControls()
const isScreenFocused = useIsFocused()
useSetTitle(feedInfo?.displayName)
const feed = `feedgen|${feedInfo.uri}` as FeedDescriptor
const [hasNew, setHasNew] = React.useState(false)
const [isScrolledDown, setIsScrolledDown] = React.useState(false)
const queryClient = useQueryClient()
const feedFeedback = useFeedFeedback(feed, hasSession)
const scrollElRef = useAnimatedRef() as ListRef
const onScrollToTop = useCallback(() => {
scrollElRef.current?.scrollToOffset({
animated: isNative,
offset: 0, // -headerHeight,
})
truncateAndInvalidate(queryClient, FEED_RQKEY(feed))
setHasNew(false)
}, [scrollElRef, queryClient, feed, setHasNew])
React.useEffect(() => {
if (!isScreenFocused) {
return
}
return listenSoftReset(onScrollToTop)
}, [onScrollToTop, isScreenFocused])
const renderPostsEmpty = useCallback(() => {
return <EmptyState icon="hashtag" message={_(msg`This feed is empty.`)} />
}, [_])
return (
<>
<ProfileFeedHeader info={feedInfo} />
<FeedFeedbackProvider value={feedFeedback}>
<PostFeed
feed={feed}
pollInterval={60e3}
disablePoll={hasNew}
onHasNew={setHasNew}
scrollElRef={scrollElRef}
onScrolledDownChange={setIsScrolledDown}
renderEmptyState={renderPostsEmpty}
/>
</FeedFeedbackProvider>
{(isScrolledDown || hasNew) && (
<LoadLatestBtn
onPress={onScrollToTop}
label={_(msg`Load new posts`)}
showIndicator={hasNew}
/>
)}
{hasSession && (
<FAB
testID="composeFAB"
onPress={() => openComposer({})}
icon={
<ComposeIcon2
strokeWidth={1.5}
size={29}
style={{color: 'white'}}
/>
}
accessibilityRole="button"
accessibilityLabel={_(msg`New post`)}
accessibilityHint=""
/>
)}
</>
)
}
const styles = StyleSheet.create({
btn: {
flexDirection: 'row',
alignItems: 'center',
gap: 6,
paddingVertical: 7,
paddingHorizontal: 14,
borderRadius: 50,
marginLeft: 6,
},
notFoundContainer: {
margin: 10,
paddingHorizontal: 18,
paddingVertical: 14,
borderRadius: 6,
},
aboutSectionContainer: {
paddingVertical: 4,
paddingHorizontal: 16,
gap: 12,
},
})
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