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import {useEffect, useState, useMemo} from 'react'
import EventEmitter from 'eventemitter3'
import {AppBskyActorDefs} from '@atproto/api'
import {batchedUpdates} from '#/lib/batchedUpdates'
import {findAllProfilesInQueryData as findAllProfilesInListMembersQueryData} from '../queries/list-members'
import {findAllProfilesInQueryData as findAllProfilesInMyBlockedAccountsQueryData} from '../queries/my-blocked-accounts'
import {findAllProfilesInQueryData as findAllProfilesInMyMutedAccountsQueryData} from '../queries/my-muted-accounts'
import {findAllProfilesInQueryData as findAllProfilesInPostLikedByQueryData} from '../queries/post-liked-by'
import {findAllProfilesInQueryData as findAllProfilesInPostRepostedByQueryData} from '../queries/post-reposted-by'
import {findAllProfilesInQueryData as findAllProfilesInProfileQueryData} from '../queries/profile'
import {findAllProfilesInQueryData as findAllProfilesInProfileFollowersQueryData} from '../queries/profile-followers'
import {findAllProfilesInQueryData as findAllProfilesInProfileFollowsQueryData} from '../queries/profile-follows'
import {findAllProfilesInQueryData as findAllProfilesInSuggestedFollowsQueryData} from '../queries/suggested-follows'
import {Shadow, castAsShadow} from './types'
import {queryClient} from 'lib/react-query'
export type {Shadow} from './types'
export interface ProfileShadow {
followingUri: string | undefined
muted: boolean | undefined
blockingUri: string | undefined
}
type ProfileView =
| AppBskyActorDefs.ProfileView
| AppBskyActorDefs.ProfileViewBasic
| AppBskyActorDefs.ProfileViewDetailed
const shadows: WeakMap<ProfileView, Partial<ProfileShadow>> = new WeakMap()
const emitter = new EventEmitter()
export function useProfileShadow(profile: ProfileView): Shadow<ProfileView> {
const [shadow, setShadow] = useState(() => shadows.get(profile))
const [prevPost, setPrevPost] = useState(profile)
if (profile !== prevPost) {
setPrevPost(profile)
setShadow(shadows.get(profile))
}
useEffect(() => {
function onUpdate() {
setShadow(shadows.get(profile))
}
emitter.addListener(profile.did, onUpdate)
return () => {
emitter.removeListener(profile.did, onUpdate)
}
}, [profile])
return useMemo(() => {
if (shadow) {
return mergeShadow(profile, shadow)
} else {
return castAsShadow(profile)
}
}, [profile, shadow])
}
export function updateProfileShadow(
did: string,
value: Partial<ProfileShadow>,
) {
const cachedProfiles = findProfilesInCache(did)
for (let post of cachedProfiles) {
shadows.set(post, {...shadows.get(post), ...value})
}
batchedUpdates(() => {
emitter.emit(did, value)
})
}
function mergeShadow(
profile: ProfileView,
shadow: Partial<ProfileShadow>,
): Shadow<ProfileView> {
return castAsShadow({
...profile,
viewer: {
...(profile.viewer || {}),
following:
'followingUri' in shadow
? shadow.followingUri
: profile.viewer?.following,
muted: 'muted' in shadow ? shadow.muted : profile.viewer?.muted,
blocking:
'blockingUri' in shadow ? shadow.blockingUri : profile.viewer?.blocking,
},
})
}
function* findProfilesInCache(did: string): Generator<ProfileView, void> {
yield* findAllProfilesInListMembersQueryData(queryClient, did)
yield* findAllProfilesInMyBlockedAccountsQueryData(queryClient, did)
yield* findAllProfilesInMyMutedAccountsQueryData(queryClient, did)
yield* findAllProfilesInPostLikedByQueryData(queryClient, did)
yield* findAllProfilesInPostRepostedByQueryData(queryClient, did)
yield* findAllProfilesInProfileQueryData(queryClient, did)
yield* findAllProfilesInProfileFollowersQueryData(queryClient, did)
yield* findAllProfilesInProfileFollowsQueryData(queryClient, did)
yield* findAllProfilesInSuggestedFollowsQueryData(queryClient, did)
}
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