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import React from 'react'
import {AppState, FlatList, View} from 'react-native'
import {useFocusEffect} from '@react-navigation/native'
import {observer} from 'mobx-react-lite'
import {
NativeStackScreenProps,
NotificationsTabNavigatorParams,
} from 'lib/routes/types'
import {withAuthRequired} from 'view/com/auth/withAuthRequired'
import {ViewHeader} from '../com/util/ViewHeader'
import {Feed} from '../com/notifications/Feed'
import {InvitedUsers} from '../com/notifications/InvitedUsers'
import {LoadLatestBtn} from 'view/com/util/load-latest/LoadLatestBtn'
import {useStores} from 'state/index'
import {useOnMainScroll} from 'lib/hooks/useOnMainScroll'
import {useTabFocusEffect} from 'lib/hooks/useTabFocusEffect'
import {s} from 'lib/styles'
import {useAnalytics} from 'lib/analytics/analytics'
import {isWeb} from 'platform/detection'
const NOTIFICATION_MARK_READ_TIMEOUT = 5000
type Props = NativeStackScreenProps<
NotificationsTabNavigatorParams,
'Notifications'
>
export const NotificationsScreen = withAuthRequired(
observer(function NotificationsScreenImpl({}: Props) {
const store = useStores()
const [onMainScroll, isScrolledDown, resetMainScroll] =
useOnMainScroll(store)
const scrollElRef = React.useRef<FlatList>(null)
const {screen} = useAnalytics()
// event handlers
// =
const onPressTryAgain = React.useCallback(() => {
store.me.notifications.refresh()
}, [store])
const scrollToTop = React.useCallback(() => {
scrollElRef.current?.scrollToOffset({offset: 0})
resetMainScroll()
}, [scrollElRef, resetMainScroll])
const onPressLoadLatest = React.useCallback(() => {
scrollToTop()
store.me.notifications.refresh()
}, [store, scrollToTop])
// on-visible setup
// =
useFocusEffect(
React.useCallback(() => {
store.shell.setMinimalShellMode(false)
store.log.debug('NotificationsScreen: Updating feed')
const softResetSub = store.onScreenSoftReset(onPressLoadLatest)
store.me.notifications.update()
screen('Notifications')
// marks notifications read if the user opens the notifications tab for x seconds
// but doesn't open any notifications or any other tab
const markReadTimeout = setTimeout(() => {
store.me.notifications.markAllRead()
}, NOTIFICATION_MARK_READ_TIMEOUT) // mark all notifications as read after 3s
// marks notification read if the user suspends the app while in the notification tab
// then opens the app into the notification tab and then closes the app again
const markReadOnBlur = AppState.addEventListener('change', event => {
if (event === 'background') store.me.notifications.markAllRead()
})
return () => {
softResetSub.remove()
markReadOnBlur.remove()
store.me.notifications.markAllRead()
clearTimeout(markReadTimeout) // in case we unmount before the timeout fires
}
}, [store, screen, onPressLoadLatest]),
)
useTabFocusEffect(
'Notifications',
React.useCallback(
isInside => {
// on mobile:
// fires with `isInside=true` when the user navigates to the root tab
// but not when the user goes back to the screen by pressing back
// on web:
// essentially equivalent to useFocusEffect because we dont used tabbed
// navigation
if (isInside) {
if (isWeb) {
store.me.notifications.syncQueue()
} else {
if (store.me.notifications.unreadCount > 0) {
store.me.notifications.refresh()
} else {
store.me.notifications.syncQueue()
}
}
}
},
[store],
),
)
const hasNew =
store.me.notifications.hasNewLatest &&
!store.me.notifications.isRefreshing
return (
<View testID="notificationsScreen" style={s.hContentRegion}>
<ViewHeader title="Notifications" canGoBack={false} />
<InvitedUsers />
<Feed
view={store.me.notifications}
onPressTryAgain={onPressTryAgain}
onScroll={onMainScroll}
scrollElRef={scrollElRef}
/>
{(isScrolledDown || hasNew) && (
<LoadLatestBtn
onPress={onPressLoadLatest}
label="Load new notifications"
showIndicator={hasNew}
minimalShellMode={true}
/>
)}
</View>
)
}),
)
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