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import React from 'react'
import {
findNodeHandle,
ListRenderItemInfo,
StyleProp,
StyleSheet,
View,
ViewStyle,
} from 'react-native'
import {msg} from '@lingui/macro'
import {useLingui} from '@lingui/react'
import {useQueryClient} from '@tanstack/react-query'
import {cleanError} from '#/lib/strings/errors'
import {useTheme} from '#/lib/ThemeContext'
import {logger} from '#/logger'
import {isNative, isWeb} from '#/platform/detection'
import {hydrateFeedGenerator} from '#/state/queries/feed'
import {usePreferencesQuery} from '#/state/queries/preferences'
import {RQKEY, useProfileFeedgensQuery} from '#/state/queries/profile-feedgens'
import {FeedLoadingPlaceholder} from '#/view/com/util/LoadingPlaceholder'
import {EmptyState} from 'view/com/util/EmptyState'
import {ErrorMessage} from '../util/error/ErrorMessage'
import {List, ListRef} from '../util/List'
import {LoadMoreRetryBtn} from '../util/LoadMoreRetryBtn'
import {FeedSourceCardLoaded} from './FeedSourceCard'
const LOADING = {_reactKey: '__loading__'}
const EMPTY = {_reactKey: '__empty__'}
const ERROR_ITEM = {_reactKey: '__error__'}
const LOAD_MORE_ERROR_ITEM = {_reactKey: '__load_more_error__'}
interface SectionRef {
scrollToTop: () => void
}
interface ProfileFeedgensProps {
did: string
scrollElRef: ListRef
headerOffset: number
enabled?: boolean
style?: StyleProp<ViewStyle>
testID?: string
setScrollViewTag: (tag: number | null) => void
}
export const ProfileFeedgens = React.forwardRef<
SectionRef,
ProfileFeedgensProps
>(function ProfileFeedgensImpl(
{did, scrollElRef, headerOffset, enabled, style, testID, setScrollViewTag},
ref,
) {
const {_} = useLingui()
const theme = useTheme()
const [isPTRing, setIsPTRing] = React.useState(false)
const opts = React.useMemo(() => ({enabled}), [enabled])
const {
data,
isFetching,
isFetched,
hasNextPage,
fetchNextPage,
isError,
error,
refetch,
} = useProfileFeedgensQuery(did, opts)
const isEmpty = !isFetching && !data?.pages[0]?.feeds.length
const {data: preferences} = usePreferencesQuery()
const items = React.useMemo(() => {
let items: any[] = []
if (isError && isEmpty) {
items = items.concat([ERROR_ITEM])
}
if (!isFetched && isFetching) {
items = items.concat([LOADING])
} else if (isEmpty) {
items = items.concat([EMPTY])
} else if (data?.pages) {
for (const page of data?.pages) {
items = items.concat(page.feeds.map(feed => hydrateFeedGenerator(feed)))
}
}
if (isError && !isEmpty) {
items = items.concat([LOAD_MORE_ERROR_ITEM])
}
return items
}, [isError, isEmpty, isFetched, isFetching, data])
// events
// =
const queryClient = useQueryClient()
const onScrollToTop = React.useCallback(() => {
scrollElRef.current?.scrollToOffset({
animated: isNative,
offset: -headerOffset,
})
queryClient.invalidateQueries({queryKey: RQKEY(did)})
}, [scrollElRef, queryClient, headerOffset, did])
React.useImperativeHandle(ref, () => ({
scrollToTop: onScrollToTop,
}))
const onRefresh = React.useCallback(async () => {
setIsPTRing(true)
try {
await refetch()
} catch (err) {
logger.error('Failed to refresh feeds', {message: err})
}
setIsPTRing(false)
}, [refetch, setIsPTRing])
const onEndReached = React.useCallback(async () => {
if (isFetching || !hasNextPage || isError) return
try {
await fetchNextPage()
} catch (err) {
logger.error('Failed to load more feeds', {message: err})
}
}, [isFetching, hasNextPage, isError, fetchNextPage])
const onPressRetryLoadMore = React.useCallback(() => {
fetchNextPage()
}, [fetchNextPage])
// rendering
// =
const renderItemInner = React.useCallback(
({item, index}: ListRenderItemInfo<any>) => {
if (item === EMPTY) {
return (
<EmptyState
icon="hashtag"
message={_(msg`You have no feeds.`)}
testID="listsEmpty"
/>
)
} else if (item === ERROR_ITEM) {
return (
<ErrorMessage message={cleanError(error)} onPressTryAgain={refetch} />
)
} else if (item === LOAD_MORE_ERROR_ITEM) {
return (
<LoadMoreRetryBtn
label={_(
msg`There was an issue fetching your lists. Tap here to try again.`,
)}
onPress={onPressRetryLoadMore}
/>
)
} else if (item === LOADING) {
return <FeedLoadingPlaceholder />
}
if (preferences) {
return (
<FeedSourceCardLoaded
feedUri={item.uri}
feed={item}
preferences={preferences}
style={styles.item}
showLikes
hideTopBorder={index === 0 && !isWeb}
/>
)
}
return null
},
[error, refetch, onPressRetryLoadMore, preferences, _],
)
React.useEffect(() => {
if (enabled && scrollElRef.current) {
const nativeTag = findNodeHandle(scrollElRef.current)
setScrollViewTag(nativeTag)
}
}, [enabled, scrollElRef, setScrollViewTag])
return (
<View testID={testID} style={style}>
<List
testID={testID ? `${testID}-flatlist` : undefined}
ref={scrollElRef}
data={items}
keyExtractor={(item: any) => item._reactKey || item.uri}
renderItem={renderItemInner}
refreshing={isPTRing}
onRefresh={onRefresh}
headerOffset={headerOffset}
contentContainerStyle={isNative && {paddingBottom: headerOffset + 100}}
indicatorStyle={theme.colorScheme === 'dark' ? 'white' : 'black'}
removeClippedSubviews={true}
// @ts-ignore our .web version only -prf
desktopFixedHeight
onEndReached={onEndReached}
/>
</View>
)
})
const styles = StyleSheet.create({
item: {
paddingHorizontal: 18,
},
})
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