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import React, {useCallback} from 'react'
import {View} from 'react-native'
import {useKeyboardController} from 'react-native-keyboard-controller'
import {AppBskyActorDefs, moderateProfile, ModerationOpts} from '@atproto/api'
import {msg} from '@lingui/macro'
import {useLingui} from '@lingui/react'
import {useFocusEffect} from '@react-navigation/native'
import {NativeStackScreenProps} from '@react-navigation/native-stack'
import {CommonNavigatorParams} from '#/lib/routes/types'
import {isWeb} from '#/platform/detection'
import {useProfileShadow} from '#/state/cache/profile-shadow'
import {ConvoProvider, isConvoActive, useConvo} from '#/state/messages/convo'
import {ConvoStatus} from '#/state/messages/convo/types'
import {useCurrentConvoId} from '#/state/messages/current-convo-id'
import {useModerationOpts} from '#/state/preferences/moderation-opts'
import {useProfileQuery} from '#/state/queries/profile'
import {useSetMinimalShellMode} from '#/state/shell'
import {CenteredView} from '#/view/com/util/Views'
import {MessagesList} from '#/screens/Messages/components/MessagesList'
import {atoms as a, useBreakpoints, useTheme, web} from '#/alf'
import {MessagesListBlockedFooter} from '#/components/dms/MessagesListBlockedFooter'
import {MessagesListHeader} from '#/components/dms/MessagesListHeader'
import {Error} from '#/components/Error'
import * as Layout from '#/components/Layout'
import {Loader} from '#/components/Loader'
type Props = NativeStackScreenProps<
CommonNavigatorParams,
'MessagesConversation'
>
export function MessagesConversationScreen({route}: Props) {
const {gtMobile} = useBreakpoints()
const setMinimalShellMode = useSetMinimalShellMode()
const convoId = route.params.conversation
const {setCurrentConvoId} = useCurrentConvoId()
const {setEnabled} = useKeyboardController()
useFocusEffect(
useCallback(() => {
if (isWeb) return
setEnabled(true)
return () => {
setEnabled(false)
}
}, [setEnabled]),
)
useFocusEffect(
useCallback(() => {
setCurrentConvoId(convoId)
if (isWeb && !gtMobile) {
setMinimalShellMode(true)
} else {
setMinimalShellMode(false)
}
return () => {
setCurrentConvoId(undefined)
setMinimalShellMode(false)
}
}, [gtMobile, convoId, setCurrentConvoId, setMinimalShellMode]),
)
return (
<Layout.Screen testID="convoScreen" style={web([{minHeight: 0}, a.flex_1])}>
<ConvoProvider key={convoId} convoId={convoId}>
<Inner />
</ConvoProvider>
</Layout.Screen>
)
}
function Inner() {
const t = useTheme()
const convoState = useConvo()
const {_} = useLingui()
const moderationOpts = useModerationOpts()
const {data: recipient} = useProfileQuery({
did: convoState.recipients?.[0].did,
})
// Because we want to give the list a chance to asynchronously scroll to the end before it is visible to the user,
// we use `hasScrolled` to determine when to render. With that said however, there is a chance that the chat will be
// empty. So, we also check for that possible state as well and render once we can.
const [hasScrolled, setHasScrolled] = React.useState(false)
const readyToShow =
hasScrolled ||
(isConvoActive(convoState) &&
!convoState.isFetchingHistory &&
convoState.items.length === 0)
// Any time that we re-render the `Initializing` state, we have to reset `hasScrolled` to false. After entering this
// state, we know that we're resetting the list of messages and need to re-scroll to the bottom when they get added.
React.useEffect(() => {
if (convoState.status === ConvoStatus.Initializing) {
setHasScrolled(false)
}
}, [convoState.status])
if (convoState.status === ConvoStatus.Error) {
return (
<CenteredView style={[a.flex_1]} sideBorders>
<MessagesListHeader />
<Error
title={_(msg`Something went wrong`)}
message={_(msg`We couldn't load this conversation`)}
onRetry={() => convoState.error.retry()}
sideBorders={false}
/>
</CenteredView>
)
}
return (
<CenteredView style={[a.flex_1]} sideBorders>
{!readyToShow && <MessagesListHeader />}
<View style={[a.flex_1]}>
{moderationOpts && recipient ? (
<InnerReady
moderationOpts={moderationOpts}
recipient={recipient}
hasScrolled={hasScrolled}
setHasScrolled={setHasScrolled}
/>
) : (
<>
<View style={[a.align_center, a.gap_sm, a.flex_1]} />
</>
)}
{!readyToShow && (
<View
style={[
a.absolute,
a.z_10,
a.w_full,
a.h_full,
a.justify_center,
a.align_center,
t.atoms.bg,
]}>
<View style={[{marginBottom: 75}]}>
<Loader size="xl" />
</View>
</View>
)}
</View>
</CenteredView>
)
}
function InnerReady({
moderationOpts,
recipient: recipientUnshadowed,
hasScrolled,
setHasScrolled,
}: {
moderationOpts: ModerationOpts
recipient: AppBskyActorDefs.ProfileViewBasic
hasScrolled: boolean
setHasScrolled: React.Dispatch<React.SetStateAction<boolean>>
}) {
const convoState = useConvo()
const recipient = useProfileShadow(recipientUnshadowed)
const moderation = React.useMemo(() => {
return moderateProfile(recipient, moderationOpts)
}, [recipient, moderationOpts])
const blockInfo = React.useMemo(() => {
const modui = moderation.ui('profileView')
const blocks = modui.alerts.filter(alert => alert.type === 'blocking')
const listBlocks = blocks.filter(alert => alert.source.type === 'list')
const userBlock = blocks.find(alert => alert.source.type === 'user')
return {
listBlocks,
userBlock,
}
}, [moderation])
return (
<>
<MessagesListHeader
profile={recipient}
moderation={moderation}
blockInfo={blockInfo}
/>
{isConvoActive(convoState) && (
<MessagesList
hasScrolled={hasScrolled}
setHasScrolled={setHasScrolled}
blocked={moderation?.blocked}
footer={
<MessagesListBlockedFooter
recipient={recipient}
convoId={convoState.convo.id}
hasMessages={convoState.items.length > 0}
blockInfo={blockInfo}
/>
}
/>
)}
</>
)
}
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