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import {
FontAwesomeIcon,
FontAwesomeIconStyle,
} from '@fortawesome/react-native-fontawesome'
import {useIsFocused} from '@react-navigation/native'
import {useAnalytics} from '@segment/analytics-react-native'
import {useQueryClient} from '@tanstack/react-query'
import {RQKEY as FEED_RQKEY} from '#/state/queries/post-feed'
import {useOnMainScroll} from 'lib/hooks/useOnMainScroll'
import {usePalette} from 'lib/hooks/usePalette'
import {useWebMediaQueries} from 'lib/hooks/useWebMediaQueries'
import {FeedDescriptor, FeedParams} from '#/state/queries/post-feed'
import {ComposeIcon2} from 'lib/icons'
import {colors, s} from 'lib/styles'
import React from 'react'
import {FlatList, View, useWindowDimensions} from 'react-native'
import {Feed} from '../posts/Feed'
import {TextLink} from '../util/Link'
import {FAB} from '../util/fab/FAB'
import {LoadLatestBtn} from '../util/load-latest/LoadLatestBtn'
import {msg} from '@lingui/macro'
import {useLingui} from '@lingui/react'
import {useSession} from '#/state/session'
import {useComposerControls} from '#/state/shell/composer'
import {listenSoftReset, emitSoftReset} from '#/state/events'
const POLL_FREQ = 30e3 // 30sec
export function FeedPage({
testID,
isPageFocused,
feed,
feedParams,
renderEmptyState,
renderEndOfFeed,
}: {
testID?: string
feed: FeedDescriptor
feedParams?: FeedParams
isPageFocused: boolean
renderEmptyState: () => JSX.Element
renderEndOfFeed?: () => JSX.Element
}) {
const {isSandbox, hasSession} = useSession()
const pal = usePalette('default')
const {_} = useLingui()
const {isDesktop} = useWebMediaQueries()
const queryClient = useQueryClient()
const {openComposer} = useComposerControls()
const [onMainScroll, isScrolledDown, resetMainScroll] = useOnMainScroll()
const {screen, track} = useAnalytics()
const headerOffset = useHeaderOffset()
const scrollElRef = React.useRef<FlatList>(null)
const isScreenFocused = useIsFocused()
const [hasNew, setHasNew] = React.useState(false)
const scrollToTop = React.useCallback(() => {
scrollElRef.current?.scrollToOffset({offset: -headerOffset})
resetMainScroll()
}, [headerOffset, resetMainScroll])
const onSoftReset = React.useCallback(() => {
if (isPageFocused) {
scrollToTop()
queryClient.resetQueries({queryKey: FEED_RQKEY(feed)})
setHasNew(false)
}
}, [isPageFocused, scrollToTop, queryClient, feed, setHasNew])
// fires when page within screen is activated/deactivated
React.useEffect(() => {
if (!isPageFocused || !isScreenFocused) {
return
}
screen('Feed')
return listenSoftReset(onSoftReset)
}, [onSoftReset, screen, isPageFocused, isScreenFocused])
const onPressCompose = React.useCallback(() => {
track('HomeScreen:PressCompose')
openComposer({})
}, [openComposer, track])
const onPressLoadLatest = React.useCallback(() => {
scrollToTop()
queryClient.resetQueries({queryKey: FEED_RQKEY(feed)})
setHasNew(false)
}, [scrollToTop, feed, queryClient, setHasNew])
const ListHeaderComponent = React.useCallback(() => {
if (isDesktop) {
return (
<View
style={[
pal.view,
{
flexDirection: 'row',
alignItems: 'center',
justifyContent: 'space-between',
paddingHorizontal: 18,
paddingVertical: 12,
},
]}>
<TextLink
type="title-lg"
href="/"
style={[pal.text, {fontWeight: 'bold'}]}
text={
<>
{isSandbox ? 'SANDBOX' : 'Bluesky'}{' '}
{hasNew && (
<View
style={{
top: -8,
backgroundColor: colors.blue3,
width: 8,
height: 8,
borderRadius: 4,
}}
/>
)}
</>
}
onPress={emitSoftReset}
/>
{hasSession && (
<TextLink
type="title-lg"
href="/settings/home-feed"
style={{fontWeight: 'bold'}}
accessibilityLabel={_(msg`Feed Preferences`)}
accessibilityHint=""
text={
<FontAwesomeIcon
icon="sliders"
style={pal.textLight as FontAwesomeIconStyle}
/>
}
/>
)}
</View>
)
}
return <></>
}, [
isDesktop,
pal.view,
pal.text,
pal.textLight,
hasNew,
_,
isSandbox,
hasSession,
])
return (
<View testID={testID} style={s.h100pct}>
<Feed
testID={testID ? `${testID}-feed` : undefined}
feed={feed}
feedParams={feedParams}
enabled={isPageFocused}
pollInterval={POLL_FREQ}
scrollElRef={scrollElRef}
onScroll={onMainScroll}
onHasNew={setHasNew}
scrollEventThrottle={1}
renderEmptyState={renderEmptyState}
renderEndOfFeed={renderEndOfFeed}
ListHeaderComponent={ListHeaderComponent}
headerOffset={headerOffset}
/>
{(isScrolledDown || hasNew) && (
<LoadLatestBtn
onPress={onPressLoadLatest}
label={_(msg`Load new posts`)}
showIndicator={hasNew}
/>
)}
{hasSession && (
<FAB
testID="composeFAB"
onPress={onPressCompose}
icon={<ComposeIcon2 strokeWidth={1.5} size={29} style={s.white} />}
accessibilityRole="button"
accessibilityLabel={_(msg`New post`)}
accessibilityHint=""
/>
)}
</View>
)
}
function useHeaderOffset() {
const {isDesktop, isTablet} = useWebMediaQueries()
const {fontScale} = useWindowDimensions()
const {hasSession} = useSession()
if (isDesktop) {
return 0
}
if (isTablet) {
if (hasSession) {
return 50
} else {
return 0
}
}
if (hasSession) {
const navBarPad = 16
const navBarText = 21 * fontScale
const tabBarPad = 20 + 3 // nav bar padding + border
const tabBarText = 16 * fontScale
const magic = 7 * fontScale
return navBarPad + navBarText + tabBarPad + tabBarText + magic
} else {
const navBarPad = 16
const navBarText = 21 * fontScale
const magic = 4 * fontScale
return navBarPad + navBarText + magic
}
}
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