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import React from 'react'
import {ActivityIndicator, StyleSheet, View} from 'react-native'
import {CenteredView, FlatList} from '../util/Views'
import {observer} from 'mobx-react-lite'
import {ErrorScreen} from '../util/error/ErrorScreen'
import {ProfileCardWithFollowBtn} from '../profile/ProfileCard'
import {useStores} from 'state/index'
import {
SuggestedActorsViewModel,
SuggestedActor,
} from 'state/models/suggested-actors-view'
import {s} from 'lib/styles'
import {usePalette} from 'lib/hooks/usePalette'
export const SuggestedFollows = observer(
({onNoSuggestions}: {onNoSuggestions?: () => void}) => {
const pal = usePalette('default')
const store = useStores()
const view = React.useMemo<SuggestedActorsViewModel>(
() => new SuggestedActorsViewModel(store),
[store],
)
React.useEffect(() => {
view
.loadMore()
.catch((err: any) =>
store.log.error('Failed to fetch suggestions', err),
)
}, [view, store.log])
React.useEffect(() => {
if (!view.isLoading && !view.hasError && !view.hasContent) {
onNoSuggestions?.()
}
}, [view, view.isLoading, view.hasError, view.hasContent, onNoSuggestions])
const onRefresh = () => {
view
.refresh()
.catch((err: any) =>
store.log.error('Failed to fetch suggestions', err),
)
}
const onEndReached = () => {
view
.loadMore()
.catch(err =>
view?.rootStore.log.error('Failed to load more suggestions', err),
)
}
const renderItem = ({item}: {item: SuggestedActor}) => {
return (
<ProfileCardWithFollowBtn
key={item.did}
did={item.did}
declarationCid={item.declaration.cid}
handle={item.handle}
displayName={item.displayName}
avatar={item.avatar}
description={item.description}
/>
)
}
return (
<View style={styles.container}>
{view.hasError ? (
<CenteredView>
<ErrorScreen
title="Failed to load suggestions"
message="There was an error while trying to load suggested follows."
details={view.error}
onPressTryAgain={onRefresh}
/>
</CenteredView>
) : view.isEmpty ? (
<View />
) : (
<View style={[styles.suggestionsContainer, pal.view]}>
<FlatList
data={view.suggestions}
keyExtractor={item => item.did}
refreshing={view.isRefreshing}
onRefresh={onRefresh}
onEndReached={onEndReached}
renderItem={renderItem}
initialNumToRender={15}
ListFooterComponent={() => (
<View style={styles.footer}>
{view.isLoading && <ActivityIndicator />}
</View>
)}
contentContainerStyle={s.contentContainer}
/>
</View>
)}
</View>
)
},
)
const styles = StyleSheet.create({
container: {
height: '100%',
},
suggestionsContainer: {
height: '100%',
},
footer: {
height: 200,
paddingTop: 20,
},
})
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