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import React, {useEffect} from 'react'
import {Animated, TouchableOpacity, StyleSheet, View} from 'react-native'
import {observer} from 'mobx-react-lite'
import {UserAutocompleteModel} from 'state/models/discovery/user-autocomplete'
import {useAnimatedValue} from 'lib/hooks/useAnimatedValue'
import {usePalette} from 'lib/hooks/usePalette'
import {Text} from 'view/com/util/text/Text'
import {UserAvatar} from 'view/com/util/UserAvatar'
import {useGrapheme} from '../hooks/useGrapheme'
export const Autocomplete = observer(
({
view,
onSelect,
}: {
view: UserAutocompleteModel
onSelect: (item: string) => void
}) => {
const pal = usePalette('default')
const positionInterp = useAnimatedValue(0)
const {getGraphemeString} = useGrapheme()
useEffect(() => {
Animated.timing(positionInterp, {
toValue: view.isActive ? 1 : 0,
duration: 200,
useNativeDriver: true,
}).start()
}, [positionInterp, view.isActive])
const topAnimStyle = {
transform: [
{
translateY: positionInterp.interpolate({
inputRange: [0, 1],
outputRange: [200, 0],
}),
},
],
}
return (
<Animated.View style={topAnimStyle}>
{view.isActive ? (
<View style={[pal.view, styles.container, pal.border]}>
{view.suggestions.length > 0 ? (
view.suggestions.slice(0, 5).map(item => {
// Eventually use an average length
const MAX_CHARS = 40
const MAX_HANDLE_CHARS = 20
// Using this approach because styling is not respecting
// bounding box wrapping (before converting to ellipsis)
const {name: displayHandle, remainingCharacters} =
getGraphemeString(item.handle, MAX_HANDLE_CHARS)
const {name: displayName} = getGraphemeString(
item.displayName ?? item.handle,
MAX_CHARS -
MAX_HANDLE_CHARS +
(remainingCharacters > 0 ? remainingCharacters : 0),
)
return (
<TouchableOpacity
testID="autocompleteButton"
key={item.handle}
style={[pal.border, styles.item]}
onPress={() => onSelect(item.handle)}
accessibilityLabel={`Select ${item.handle}`}
accessibilityHint="">
<View style={styles.avatarAndHandle}>
<UserAvatar avatar={item.avatar ?? null} size={24} />
<Text type="md-medium" style={pal.text}>
{displayName}
</Text>
</View>
<Text type="sm" style={pal.textLight} numberOfLines={1}>
@{displayHandle}
</Text>
</TouchableOpacity>
)
})
) : (
<Text type="sm" style={[pal.text, pal.border, styles.noResults]}>
No result
</Text>
)}
</View>
) : null}
</Animated.View>
)
},
)
const styles = StyleSheet.create({
container: {
marginLeft: -54,
top: 10,
borderTopWidth: 1,
},
item: {
borderBottomWidth: 1,
paddingVertical: 12,
display: 'flex',
flexDirection: 'row',
alignItems: 'center',
justifyContent: 'space-between',
gap: 6,
},
avatarAndHandle: {
display: 'flex',
flexDirection: 'row',
gap: 6,
alignItems: 'center',
},
noResults: {
paddingVertical: 12,
},
})
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