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import React, {useCallback} from 'react'
import {View} from 'react-native'
import {msg, Trans} from '@lingui/macro'
import {useLingui} from '@lingui/react'
import {useFocusEffect, useIsFocused} from '@react-navigation/native'
import {useQueryClient} from '@tanstack/react-query'
import {useNonReactiveCallback} from '#/lib/hooks/useNonReactiveCallback'
import {useWebMediaQueries} from '#/lib/hooks/useWebMediaQueries'
import {ComposeIcon2} from '#/lib/icons'
import {
NativeStackScreenProps,
NotificationsTabNavigatorParams,
} from '#/lib/routes/types'
import {s} from '#/lib/styles'
import {logger} from '#/logger'
import {isNative} from '#/platform/detection'
import {emitSoftReset, listenSoftReset} from '#/state/events'
import {RQKEY as NOTIFS_RQKEY} from '#/state/queries/notifications/feed'
import {
useUnreadNotifications,
useUnreadNotificationsApi,
} from '#/state/queries/notifications/unread'
import {truncateAndInvalidate} from '#/state/queries/util'
import {useSetMinimalShellMode} from '#/state/shell'
import {useComposerControls} from '#/state/shell/composer'
import {Feed} from '#/view/com/notifications/Feed'
import {FAB} from '#/view/com/util/fab/FAB'
import {ListMethods} from '#/view/com/util/List'
import {LoadLatestBtn} from '#/view/com/util/load-latest/LoadLatestBtn'
import {MainScrollProvider} from '#/view/com/util/MainScrollProvider'
import {ViewHeader} from '#/view/com/util/ViewHeader'
import {CenteredView} from '#/view/com/util/Views'
import {atoms as a, useTheme} from '#/alf'
import {Button} from '#/components/Button'
import {SettingsGear2_Stroke2_Corner0_Rounded as SettingsIcon} from '#/components/icons/SettingsGear2'
import * as Layout from '#/components/Layout'
import {Link} from '#/components/Link'
import {Loader} from '#/components/Loader'
import {Text} from '#/components/Typography'
type Props = NativeStackScreenProps<
NotificationsTabNavigatorParams,
'Notifications'
>
export function NotificationsScreen({route: {params}}: Props) {
const {_} = useLingui()
const setMinimalShellMode = useSetMinimalShellMode()
const [isScrolledDown, setIsScrolledDown] = React.useState(false)
const [isLoadingLatest, setIsLoadingLatest] = React.useState(false)
const scrollElRef = React.useRef<ListMethods>(null)
const t = useTheme()
const {isDesktop} = useWebMediaQueries()
const queryClient = useQueryClient()
const unreadNotifs = useUnreadNotifications()
const unreadApi = useUnreadNotificationsApi()
const hasNew = !!unreadNotifs
const isScreenFocused = useIsFocused()
const {openComposer} = useComposerControls()
// event handlers
// =
const scrollToTop = React.useCallback(() => {
scrollElRef.current?.scrollToOffset({animated: isNative, offset: 0})
setMinimalShellMode(false)
}, [scrollElRef, setMinimalShellMode])
const onPressLoadLatest = React.useCallback(() => {
scrollToTop()
if (hasNew) {
// render what we have now
truncateAndInvalidate(queryClient, NOTIFS_RQKEY())
} else {
// check with the server
setIsLoadingLatest(true)
unreadApi
.checkUnread({invalidate: true})
.catch(() => undefined)
.then(() => setIsLoadingLatest(false))
}
}, [scrollToTop, queryClient, unreadApi, hasNew, setIsLoadingLatest])
const onFocusCheckLatest = useNonReactiveCallback(() => {
// on focus, check for latest, but only invalidate if the user
// isnt scrolled down to avoid moving content underneath them
let currentIsScrolledDown
if (isNative) {
currentIsScrolledDown = isScrolledDown
} else {
// On the web, this isn't always updated in time so
// we're just going to look it up synchronously.
currentIsScrolledDown = window.scrollY > 200
}
unreadApi.checkUnread({invalidate: !currentIsScrolledDown})
})
// on-visible setup
// =
useFocusEffect(
React.useCallback(() => {
setMinimalShellMode(false)
logger.debug('NotificationsScreen: Focus')
onFocusCheckLatest()
}, [setMinimalShellMode, onFocusCheckLatest]),
)
React.useEffect(() => {
if (!isScreenFocused) {
return
}
return listenSoftReset(onPressLoadLatest)
}, [onPressLoadLatest, isScreenFocused])
const renderButton = useCallback(() => {
return (
<Link
to="/notifications/settings"
label={_(msg`Notification settings`)}
size="small"
variant="ghost"
color="secondary"
shape="square"
style={[a.justify_center]}>
<SettingsIcon size="md" style={t.atoms.text_contrast_medium} />
</Link>
)
}, [_, t])
const ListHeaderComponent = React.useCallback(() => {
if (isDesktop) {
return (
<View
style={[
t.atoms.bg,
a.flex_row,
a.align_center,
a.justify_between,
a.gap_lg,
a.px_lg,
a.pr_md,
a.py_sm,
]}>
<Button
label={_(msg`Notifications`)}
accessibilityHint={_(msg`Refresh notifications`)}
onPress={emitSoftReset}>
{({hovered, pressed}) => (
<Text
style={[
a.text_2xl,
a.font_bold,
(hovered || pressed) && a.underline,
]}>
<Trans>Notifications</Trans>
{hasNew && (
<View
style={{
left: 4,
top: -8,
backgroundColor: t.palette.primary_500,
width: 8,
height: 8,
borderRadius: 4,
}}
/>
)}
</Text>
)}
</Button>
<View style={[a.flex_row, a.align_center, a.gap_sm]}>
{isLoadingLatest ? <Loader size="md" /> : <></>}
{renderButton()}
</View>
</View>
)
}
return <></>
}, [isDesktop, t, hasNew, renderButton, _, isLoadingLatest])
const renderHeaderSpinner = React.useCallback(() => {
return (
<View
style={[
{width: 30, height: 20},
a.flex_row,
a.align_center,
a.justify_end,
a.gap_md,
]}>
{isLoadingLatest ? <Loader width={20} /> : <></>}
{renderButton()}
</View>
)
}, [renderButton, isLoadingLatest])
return (
<Layout.Screen testID="notificationsScreen">
<CenteredView style={[a.flex_1, {paddingTop: 2}]} sideBorders={true}>
<ViewHeader
title={_(msg`Notifications`)}
canGoBack={false}
showBorder={true}
renderButton={renderHeaderSpinner}
/>
<MainScrollProvider>
<Feed
onScrolledDownChange={setIsScrolledDown}
scrollElRef={scrollElRef}
ListHeaderComponent={ListHeaderComponent}
overridePriorityNotifications={params?.show === 'all'}
/>
</MainScrollProvider>
{(isScrolledDown || hasNew) && (
<LoadLatestBtn
onPress={onPressLoadLatest}
label={_(msg`Load new notifications`)}
showIndicator={hasNew}
/>
)}
<FAB
testID="composeFAB"
onPress={() => openComposer({})}
icon={<ComposeIcon2 strokeWidth={1.5} size={29} style={s.white} />}
accessibilityRole="button"
accessibilityLabel={_(msg`New post`)}
accessibilityHint=""
/>
</CenteredView>
</Layout.Screen>
)
}
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