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import React, {useContext, useState, useSyncExternalStore} from 'react'
import {AppState} from 'react-native'
import {useFocusEffect, useIsFocused} from '@react-navigation/native'
import {useQueryClient} from '@tanstack/react-query'
import {Convo} from '#/state/messages/convo/agent'
import {
ConvoParams,
ConvoState,
ConvoStateBackgrounded,
ConvoStateReady,
ConvoStateSuspended,
} from '#/state/messages/convo/types'
import {isConvoActive} from '#/state/messages/convo/util'
import {useMessagesEventBus} from '#/state/messages/events'
import {useMarkAsReadMutation} from '#/state/queries/messages/conversation'
import {RQKEY as ListConvosQueryKey} from '#/state/queries/messages/list-converations'
import {RQKEY as createProfileQueryKey} from '#/state/queries/profile'
import {useAgent} from '#/state/session'
export * from '#/state/messages/convo/util'
const ChatContext = React.createContext<ConvoState | null>(null)
export function useConvo() {
const ctx = useContext(ChatContext)
if (!ctx) {
throw new Error('useConvo must be used within a ConvoProvider')
}
return ctx
}
/**
* This hook should only be used when the Convo is "active", meaning the chat
* is loaded and ready to be used, or its in a suspended or background state,
* and ready for resumption.
*/
export function useConvoActive() {
const ctx = useContext(ChatContext) as
| ConvoStateReady
| ConvoStateBackgrounded
| ConvoStateSuspended
if (!ctx) {
throw new Error('useConvo must be used within a ConvoProvider')
}
if (!isConvoActive(ctx)) {
throw new Error(
`useConvoActive must only be rendered when the Convo is ready.`,
)
}
return ctx
}
export function ConvoProvider({
children,
convoId,
}: Pick<ConvoParams, 'convoId'> & {children: React.ReactNode}) {
const queryClient = useQueryClient()
const isScreenFocused = useIsFocused()
const {getAgent} = useAgent()
const events = useMessagesEventBus()
const [convo] = useState(
() =>
new Convo({
convoId,
agent: getAgent(),
events,
}),
)
const service = useSyncExternalStore(convo.subscribe, convo.getSnapshot)
const {mutate: markAsRead} = useMarkAsReadMutation()
useFocusEffect(
React.useCallback(() => {
convo.resume()
markAsRead({convoId})
return () => {
convo.background()
markAsRead({convoId})
}
}, [convo, convoId, markAsRead]),
)
React.useEffect(() => {
return convo.on(event => {
switch (event.type) {
case 'invalidate-block-state': {
for (const did of event.accountDids) {
queryClient.invalidateQueries({
queryKey: createProfileQueryKey(did),
})
}
queryClient.invalidateQueries({
queryKey: ListConvosQueryKey,
})
}
}
})
}, [convo, queryClient])
React.useEffect(() => {
const handleAppStateChange = (nextAppState: string) => {
if (isScreenFocused) {
if (nextAppState === 'active') {
convo.resume()
} else {
convo.background()
}
markAsRead({convoId})
}
}
const sub = AppState.addEventListener('change', handleAppStateChange)
return () => {
sub.remove()
}
}, [convoId, convo, isScreenFocused, markAsRead])
return <ChatContext.Provider value={service}>{children}</ChatContext.Provider>
}
|
