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import React from 'react'
import {
Keyboard,
StyleSheet,
TextInput,
TouchableOpacity,
TouchableWithoutFeedback,
View,
} from 'react-native'
import {useFocusEffect} from '@react-navigation/native'
import {
FontAwesomeIcon,
FontAwesomeIconStyle,
} from '@fortawesome/react-native-fontawesome'
import {ScrollView} from '../com/util/Views'
import {
NativeStackScreenProps,
SearchTabNavigatorParams,
} from 'lib/routes/types'
import {observer} from 'mobx-react-lite'
import {UserAvatar} from '../com/util/UserAvatar'
import {Text} from '../com/util/text/Text'
import {useStores} from 'state/index'
import {UserAutocompleteViewModel} from 'state/models/user-autocomplete-view'
import {s} from 'lib/styles'
import {MagnifyingGlassIcon} from 'lib/icons'
import {WhoToFollow} from '../com/discover/WhoToFollow'
import {SuggestedPosts} from '../com/discover/SuggestedPosts'
import {ProfileCard} from '../com/profile/ProfileCard'
import {usePalette} from 'lib/hooks/usePalette'
import {useTheme} from 'lib/ThemeContext'
import {useOnMainScroll} from 'lib/hooks/useOnMainScroll'
import {useAnalytics} from 'lib/analytics'
const MENU_HITSLOP = {left: 10, top: 10, right: 30, bottom: 10}
const FIVE_MIN = 5 * 60 * 1e3
type Props = NativeStackScreenProps<SearchTabNavigatorParams, 'Search'>
export const SearchScreen = observer<Props>(({}: Props) => {
const pal = usePalette('default')
const theme = useTheme()
const store = useStores()
const {track} = useAnalytics()
const scrollElRef = React.useRef<ScrollView>(null)
const onMainScroll = useOnMainScroll(store)
const textInput = React.useRef<TextInput>(null)
const [lastRenderTime, setRenderTime] = React.useState<number>(Date.now()) // used to trigger reloads
const [isInputFocused, setIsInputFocused] = React.useState<boolean>(false)
const [query, setQuery] = React.useState<string>('')
const autocompleteView = React.useMemo<UserAutocompleteViewModel>(
() => new UserAutocompleteViewModel(store),
[store],
)
const onSoftReset = () => {
scrollElRef.current?.scrollTo({x: 0, y: 0})
}
useFocusEffect(
React.useCallback(() => {
const softResetSub = store.onScreenSoftReset(onSoftReset)
const cleanup = () => {
softResetSub.remove()
}
const now = Date.now()
if (now - lastRenderTime > FIVE_MIN) {
setRenderTime(Date.now()) // trigger reload of suggestions
}
store.shell.setMinimalShellMode(false)
autocompleteView.setup()
return cleanup
}, [store, autocompleteView, lastRenderTime, setRenderTime]),
)
const onPressMenu = () => {
track('ViewHeader:MenuButtonClicked')
store.shell.openDrawer()
}
const onChangeQuery = (text: string) => {
setQuery(text)
if (text.length > 0) {
autocompleteView.setActive(true)
autocompleteView.setPrefix(text)
} else {
autocompleteView.setActive(false)
}
}
const onPressClearQuery = () => {
setQuery('')
}
const onPressCancelSearch = () => {
setQuery('')
autocompleteView.setActive(false)
textInput.current?.blur()
}
return (
<TouchableWithoutFeedback onPress={Keyboard.dismiss}>
<ScrollView
ref={scrollElRef}
testID="searchScrollView"
style={[pal.view, styles.container]}
onScroll={onMainScroll}
scrollEventThrottle={100}>
<View style={[pal.view, pal.border, styles.header]}>
<TouchableOpacity
testID="viewHeaderBackOrMenuBtn"
onPress={onPressMenu}
hitSlop={MENU_HITSLOP}
style={styles.headerMenuBtn}>
<UserAvatar size={30} avatar={store.me.avatar} />
</TouchableOpacity>
<View
style={[
{backgroundColor: pal.colors.backgroundLight},
styles.headerSearchContainer,
]}>
<MagnifyingGlassIcon
style={[pal.icon, styles.headerSearchIcon]}
size={21}
/>
<TextInput
testID="searchTextInput"
ref={textInput}
placeholder="Search"
placeholderTextColor={pal.colors.textLight}
selectTextOnFocus
returnKeyType="search"
value={query}
style={[pal.text, styles.headerSearchInput]}
keyboardAppearance={theme.colorScheme}
onFocus={() => setIsInputFocused(true)}
onBlur={() => setIsInputFocused(false)}
onChangeText={onChangeQuery}
/>
{query ? (
<TouchableOpacity onPress={onPressClearQuery}>
<FontAwesomeIcon
icon="xmark"
size={16}
style={pal.textLight as FontAwesomeIconStyle}
/>
</TouchableOpacity>
) : undefined}
</View>
{query || isInputFocused ? (
<View style={styles.headerCancelBtn}>
<TouchableOpacity onPress={onPressCancelSearch}>
<Text style={pal.text}>Cancel</Text>
</TouchableOpacity>
</View>
) : undefined}
</View>
{query && autocompleteView.searchRes.length ? (
<>
{autocompleteView.searchRes.map(item => (
<ProfileCard
key={item.did}
handle={item.handle}
displayName={item.displayName}
avatar={item.avatar}
/>
))}
</>
) : query && !autocompleteView.searchRes.length ? (
<View>
<Text style={[pal.textLight, styles.searchPrompt]}>
No results found for {autocompleteView.prefix}
</Text>
</View>
) : isInputFocused ? (
<View>
<Text style={[pal.textLight, styles.searchPrompt]}>
Search for users on the network
</Text>
</View>
) : (
<ScrollView onScroll={Keyboard.dismiss}>
<WhoToFollow key={`wtf-${lastRenderTime}`} />
<SuggestedPosts key={`sp-${lastRenderTime}`} />
<View style={s.footerSpacer} />
</ScrollView>
)}
<View style={s.footerSpacer} />
</ScrollView>
</TouchableWithoutFeedback>
)
})
const styles = StyleSheet.create({
container: {
flex: 1,
},
header: {
flexDirection: 'row',
alignItems: 'center',
paddingHorizontal: 12,
paddingTop: 4,
marginBottom: 14,
},
headerMenuBtn: {
width: 40,
height: 30,
marginLeft: 6,
},
headerSearchContainer: {
flex: 1,
flexDirection: 'row',
alignItems: 'center',
borderRadius: 30,
paddingHorizontal: 12,
paddingVertical: 8,
},
headerSearchIcon: {
marginRight: 6,
alignSelf: 'center',
},
headerSearchInput: {
flex: 1,
fontSize: 17,
},
headerCancelBtn: {
width: 60,
paddingLeft: 10,
},
searchPrompt: {
textAlign: 'center',
paddingTop: 10,
},
})
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