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import React, {useEffect} from 'react'
import {observer} from 'mobx-react-lite'
import {ActivityIndicator, StyleSheet, View} from 'react-native'
import {
UserFollowersViewModel,
FollowerItem,
} from 'state/models/user-followers-view'
import {CenteredView, FlatList} from '../util/Views'
import {ErrorMessage} from '../util/error/ErrorMessage'
import {ProfileCardWithFollowBtn} from './ProfileCard'
import {useStores} from 'state/index'
export const ProfileFollowers = observer(function ProfileFollowers({
name,
}: {
name: string
}) {
const store = useStores()
const view = React.useMemo(
() => new UserFollowersViewModel(store, {user: name}),
[store, name],
)
useEffect(() => {
view
.loadMore()
.catch(err => store.log.error('Failed to fetch user followers', err))
}, [view, store.log])
const onRefresh = () => {
view.refresh()
}
const onEndReached = () => {
view
.loadMore()
.catch(err =>
view?.rootStore.log.error('Failed to load more followers', err),
)
}
if (!view.hasLoaded) {
return (
<CenteredView>
<ActivityIndicator />
</CenteredView>
)
}
// error
// =
if (view.hasError) {
return (
<CenteredView>
<ErrorMessage message={view.error} onPressTryAgain={onRefresh} />
</CenteredView>
)
}
// loaded
// =
const renderItem = ({item}: {item: FollowerItem}) => (
<ProfileCardWithFollowBtn
key={item.did}
did={item.did}
declarationCid={item.declaration.cid}
handle={item.handle}
displayName={item.displayName}
avatar={item.avatar}
isFollowedBy={!!item.viewer?.followedBy}
/>
)
return (
<FlatList
data={view.followers}
keyExtractor={item => item.did}
refreshing={view.isRefreshing}
onRefresh={onRefresh}
onEndReached={onEndReached}
renderItem={renderItem}
initialNumToRender={15}
ListFooterComponent={() => (
<View style={styles.footer}>
{view.isLoading && <ActivityIndicator />}
</View>
)}
extraData={view.isLoading}
/>
)
})
const styles = StyleSheet.create({
footer: {
height: 200,
paddingTop: 20,
},
})
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