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import React, {useEffect, useState} from 'react'
import {
ActivityIndicator,
FlatList,
StyleSheet,
TouchableOpacity,
View,
} from 'react-native'
import LinearGradient from 'react-native-linear-gradient'
import {FontAwesomeIcon} from '@fortawesome/react-native-fontawesome'
import {observer} from 'mobx-react-lite'
import _omit from 'lodash.omit'
import {ErrorScreen} from '../util/error/ErrorScreen'
import {Link} from '../util/Link'
import {Text} from '../util/text/Text'
import {UserAvatar} from '../util/UserAvatar'
import * as Toast from '../util/Toast'
import {useStores} from '../../../state'
import * as apilib from '../../../state/lib/api'
import {
SuggestedActorsViewModel,
SuggestedActor,
} from '../../../state/models/suggested-actors-view'
import {s, gradients} from '../../lib/styles'
import {usePalette} from '../../lib/hooks/usePalette'
export const SuggestedFollows = observer(
({
onNoSuggestions,
asLinks,
}: {
onNoSuggestions?: () => void
asLinks?: boolean
}) => {
const pal = usePalette('default')
const store = useStores()
const [follows, setFollows] = useState<Record<string, string>>({})
// Using default import (React.use...) instead of named import (use...) to be able to mock store's data in jest environment
const view = React.useMemo<SuggestedActorsViewModel>(
() => new SuggestedActorsViewModel(store),
[store],
)
useEffect(() => {
view
.setup()
.catch((err: any) =>
store.log.error('Failed to fetch suggestions', err),
)
}, [view, store.log])
useEffect(() => {
if (!view.isLoading && !view.hasError && !view.hasContent) {
onNoSuggestions?.()
}
}, [view, view.isLoading, view.hasError, view.hasContent, onNoSuggestions])
const onPressTryAgain = () =>
view
.setup()
.catch((err: any) =>
store.log.error('Failed to fetch suggestions', err),
)
const onPressFollow = async (item: SuggestedActor) => {
try {
const res = await apilib.follow(store, item.did, item.declaration.cid)
setFollows({[item.did]: res.uri, ...follows})
} catch (e: any) {
store.log.error('Failed fo create follow', e)
Toast.show('An issue occurred, please try again.')
}
}
const onPressUnfollow = async (item: SuggestedActor) => {
try {
await apilib.unfollow(store, follows[item.did])
setFollows(_omit(follows, [item.did]))
} catch (e: any) {
store.log.error('Failed fo delete follow', e)
Toast.show('An issue occurred, please try again.')
}
}
const renderItem = ({item}: {item: SuggestedActor}) => {
if (asLinks) {
return (
<Link
href={`/profile/${item.handle}`}
title={item.displayName || item.handle}>
<User
item={item}
follow={follows[item.did]}
onPressFollow={onPressFollow}
onPressUnfollow={onPressUnfollow}
/>
</Link>
)
}
return (
<User
item={item}
follow={follows[item.did]}
onPressFollow={onPressFollow}
onPressUnfollow={onPressUnfollow}
/>
)
}
return (
<View style={styles.container}>
{view.isLoading ? (
<View>
<ActivityIndicator />
</View>
) : view.hasError ? (
<ErrorScreen
title="Failed to load suggestions"
message="There was an error while trying to load suggested follows."
details={view.error}
onPressTryAgain={onPressTryAgain}
/>
) : view.isEmpty ? (
<View />
) : (
<View style={[styles.suggestionsContainer, pal.view]}>
<FlatList
data={view.suggestions}
keyExtractor={item => item._reactKey}
renderItem={renderItem}
style={s.flex1}
contentContainerStyle={s.contentContainer}
/>
</View>
)}
</View>
)
},
)
const User = ({
item,
follow,
onPressFollow,
onPressUnfollow,
}: {
item: SuggestedActor
follow: string | undefined
onPressFollow: (item: SuggestedActor) => void
onPressUnfollow: (item: SuggestedActor) => void
}) => {
const pal = usePalette('default')
return (
<View style={[styles.actor, pal.view, pal.border]}>
<View style={styles.actorMeta}>
<View style={styles.actorAvi}>
<UserAvatar
size={40}
displayName={item.displayName}
handle={item.handle}
avatar={item.avatar}
/>
</View>
<View style={styles.actorContent}>
<Text type="title-sm" style={pal.text} numberOfLines={1}>
{item.displayName || item.handle}
</Text>
<Text style={pal.textLight} numberOfLines={1}>
@{item.handle}
</Text>
</View>
<View style={styles.actorBtn}>
{follow ? (
<TouchableOpacity onPress={() => onPressUnfollow(item)}>
<View style={[styles.btn, styles.secondaryBtn, pal.btn]}>
<Text type="button" style={pal.text}>
Unfollow
</Text>
</View>
</TouchableOpacity>
) : (
<TouchableOpacity onPress={() => onPressFollow(item)}>
<LinearGradient
colors={[gradients.blueLight.start, gradients.blueLight.end]}
start={{x: 0, y: 0}}
end={{x: 1, y: 1}}
style={[styles.btn, styles.gradientBtn]}>
<FontAwesomeIcon
icon="plus"
style={[s.white, s.mr5]}
size={15}
/>
<Text style={[s.white, s.fw600, s.f15]}>Follow</Text>
</LinearGradient>
</TouchableOpacity>
)}
</View>
</View>
{item.description ? (
<View style={styles.actorDetails}>
<Text style={pal.text} numberOfLines={4}>
{item.description}
</Text>
</View>
) : undefined}
</View>
)
}
const styles = StyleSheet.create({
container: {
flex: 1,
},
suggestionsContainer: {
flex: 1,
},
actor: {
borderTopWidth: 1,
},
actorMeta: {
flexDirection: 'row',
},
actorAvi: {
width: 60,
paddingLeft: 10,
paddingTop: 10,
paddingBottom: 10,
},
actorContent: {
flex: 1,
paddingRight: 10,
paddingTop: 10,
},
actorBtn: {
paddingRight: 10,
paddingTop: 10,
},
actorDetails: {
paddingLeft: 60,
paddingRight: 10,
paddingBottom: 10,
},
gradientBtn: {
paddingHorizontal: 24,
paddingVertical: 6,
},
secondaryBtn: {
paddingHorizontal: 14,
},
btn: {
flexDirection: 'row',
alignItems: 'center',
justifyContent: 'center',
paddingVertical: 7,
borderRadius: 50,
marginLeft: 6,
},
})
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