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import React, {useState} from 'react'
import {ListRenderItemInfo, View} from 'react-native'
import {KeyboardAwareScrollView} from 'react-native-keyboard-controller'
import {AppBskyFeedDefs, ModerationOpts} from '@atproto/api'
import {Trans} from '@lingui/macro'
import {useA11y} from '#/state/a11y'
import {DISCOVER_FEED_URI} from 'lib/constants'
import {
useGetPopularFeedsQuery,
useSavedFeeds,
useSearchPopularFeedsQuery,
} from 'state/queries/feed'
import {SearchInput} from 'view/com/util/forms/SearchInput'
import {List} from 'view/com/util/List'
import {useWizardState} from '#/screens/StarterPack/Wizard/State'
import {atoms as a, useTheme} from '#/alf'
import {useThrottledValue} from '#/components/hooks/useThrottledValue'
import {Loader} from '#/components/Loader'
import {ScreenTransition} from '#/components/StarterPack/Wizard/ScreenTransition'
import {WizardFeedCard} from '#/components/StarterPack/Wizard/WizardListCard'
import {Text} from '#/components/Typography'
function keyExtractor(item: AppBskyFeedDefs.GeneratorView) {
return item.uri
}
export function StepFeeds({moderationOpts}: {moderationOpts: ModerationOpts}) {
const t = useTheme()
const [state, dispatch] = useWizardState()
const [query, setQuery] = useState('')
const throttledQuery = useThrottledValue(query, 500)
const {screenReaderEnabled} = useA11y()
const {data: savedFeedsAndLists} = useSavedFeeds()
const savedFeeds = savedFeedsAndLists?.feeds
.filter(f => f.type === 'feed' && f.view.uri !== DISCOVER_FEED_URI)
.map(f => f.view) as AppBskyFeedDefs.GeneratorView[]
const {data: popularFeedsPages, fetchNextPage} = useGetPopularFeedsQuery({
limit: 30,
})
const popularFeeds =
popularFeedsPages?.pages
.flatMap(page => page.feeds)
.filter(f => !savedFeeds?.some(sf => sf?.uri === f.uri)) ?? []
const suggestedFeeds = savedFeeds?.concat(popularFeeds)
const {data: searchedFeeds, isLoading: isLoadingSearch} =
useSearchPopularFeedsQuery({q: throttledQuery})
const renderItem = ({
item,
}: ListRenderItemInfo<AppBskyFeedDefs.GeneratorView>) => {
return (
<WizardFeedCard
generator={item}
state={state}
dispatch={dispatch}
moderationOpts={moderationOpts}
/>
)
}
return (
<ScreenTransition style={[a.flex_1]} direction={state.transitionDirection}>
<View style={[a.border_b, t.atoms.border_contrast_medium]}>
<View style={[a.my_sm, a.px_md, {height: 40}]}>
<SearchInput
query={query}
onChangeQuery={t => setQuery(t)}
onPressCancelSearch={() => setQuery('')}
onSubmitQuery={() => {}}
/>
</View>
</View>
<List
data={query ? searchedFeeds : suggestedFeeds}
renderItem={renderItem}
keyExtractor={keyExtractor}
contentContainerStyle={{paddingTop: 6}}
onEndReached={
!query && !screenReaderEnabled ? () => fetchNextPage() : undefined
}
onEndReachedThreshold={2}
renderScrollComponent={props => <KeyboardAwareScrollView {...props} />}
keyboardShouldPersistTaps="handled"
containWeb={true}
sideBorders={false}
style={{flex: 1}}
ListEmptyComponent={
<View style={[a.flex_1, a.align_center, a.mt_lg, a.px_lg]}>
{isLoadingSearch ? (
<Loader size="lg" />
) : (
<Text
style={[
a.font_bold,
a.text_lg,
a.text_center,
a.mt_lg,
a.leading_snug,
]}>
<Trans>No feeds found. Try searching for something else.</Trans>
</Text>
)}
</View>
}
/>
</ScreenTransition>
)
}
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