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import {useCallback, useMemo} from 'react'
import {AppBskyFeedDefs, AppBskyFeedPost, moderatePost} from '@atproto/api'
import {useInfiniteQuery, InfiniteData, QueryKey} from '@tanstack/react-query'
import {useSession} from '../session'
import {useFeedTuners} from '../preferences/feed-tuners'
import {FeedTuner, NoopFeedTuner} from 'lib/api/feed-manip'
import {FeedAPI, ReasonFeedSource} from 'lib/api/feed/types'
import {FollowingFeedAPI} from 'lib/api/feed/following'
import {AuthorFeedAPI} from 'lib/api/feed/author'
import {LikesFeedAPI} from 'lib/api/feed/likes'
import {CustomFeedAPI} from 'lib/api/feed/custom'
import {ListFeedAPI} from 'lib/api/feed/list'
import {MergeFeedAPI} from 'lib/api/feed/merge'
import {useModerationOpts} from '#/state/queries/preferences'
import {logger} from '#/logger'
import {STALE} from '#/state/queries'
type ActorDid = string
type AuthorFilter =
| 'posts_with_replies'
| 'posts_no_replies'
| 'posts_with_media'
type FeedUri = string
type ListUri = string
export type FeedDescriptor =
| 'home'
| 'following'
| `author|${ActorDid}|${AuthorFilter}`
| `feedgen|${FeedUri}`
| `likes|${ActorDid}`
| `list|${ListUri}`
export interface FeedParams {
disableTuner?: boolean
mergeFeedEnabled?: boolean
mergeFeedSources?: string[]
}
type RQPageParam = string | undefined
export function RQKEY(feedDesc: FeedDescriptor, params?: FeedParams) {
return ['post-feed', feedDesc, params || {}]
}
export interface FeedPostSliceItem {
_reactKey: string
uri: string
post: AppBskyFeedDefs.PostView
record: AppBskyFeedPost.Record
reason?: AppBskyFeedDefs.ReasonRepost | ReasonFeedSource
}
export interface FeedPostSlice {
_reactKey: string
rootUri: string
isThread: boolean
items: FeedPostSliceItem[]
}
export interface FeedPage {
cursor: string | undefined
slices: FeedPostSlice[]
}
export function usePostFeedQuery(
feedDesc: FeedDescriptor,
params?: FeedParams,
opts?: {enabled?: boolean},
) {
const {agent} = useSession()
const feedTuners = useFeedTuners(feedDesc)
const enabled = opts?.enabled !== false
const moderationOpts = useModerationOpts()
const api: FeedAPI = useMemo(() => {
if (feedDesc === 'home') {
return new MergeFeedAPI(agent, params || {}, feedTuners)
} else if (feedDesc === 'following') {
return new FollowingFeedAPI(agent)
} else if (feedDesc.startsWith('author')) {
const [_, actor, filter] = feedDesc.split('|')
return new AuthorFeedAPI(agent, {actor, filter})
} else if (feedDesc.startsWith('likes')) {
const [_, actor] = feedDesc.split('|')
return new LikesFeedAPI(agent, {actor})
} else if (feedDesc.startsWith('feedgen')) {
const [_, feed] = feedDesc.split('|')
return new CustomFeedAPI(agent, {feed})
} else if (feedDesc.startsWith('list')) {
const [_, list] = feedDesc.split('|')
return new ListFeedAPI(agent, {list})
} else {
// shouldnt happen
return new FollowingFeedAPI(agent)
}
}, [feedDesc, params, feedTuners, agent])
const disableTuner = !!params?.disableTuner
const tuner = useMemo(
() => (disableTuner ? new NoopFeedTuner() : new FeedTuner()),
[disableTuner],
)
const pollLatest = useCallback(async () => {
if (!enabled) {
return false
}
logger.debug('usePostFeedQuery: pollLatest')
const post = await api.peekLatest()
if (post && moderationOpts) {
const slices = tuner.tune([post], feedTuners, {
dryRun: true,
maintainOrder: true,
})
if (slices[0]) {
if (
!moderatePost(slices[0].items[0].post, moderationOpts).content.filter
) {
return true
}
}
}
return false
}, [api, tuner, feedTuners, moderationOpts, enabled])
const out = useInfiniteQuery<
FeedPage,
Error,
InfiniteData<FeedPage>,
QueryKey,
RQPageParam
>({
staleTime: STALE.INFINITY,
queryKey: RQKEY(feedDesc, params),
async queryFn({pageParam}: {pageParam: RQPageParam}) {
console.log('fetch', feedDesc, pageParam)
if (!pageParam) {
tuner.reset()
}
const res = await api.fetch({cursor: pageParam, limit: 30})
const slices = tuner.tune(res.feed, feedTuners)
return {
cursor: res.cursor,
slices: slices.map(slice => ({
_reactKey: slice._reactKey,
rootUri: slice.rootItem.post.uri,
isThread:
slice.items.length > 1 &&
slice.items.every(
item => item.post.author.did === slice.items[0].post.author.did,
),
source: undefined, // TODO
items: slice.items
.map((item, i) => {
if (
AppBskyFeedPost.isRecord(item.post.record) &&
AppBskyFeedPost.validateRecord(item.post.record).success
) {
return {
_reactKey: `${slice._reactKey}-${i}`,
uri: item.post.uri,
post: item.post,
record: item.post.record,
reason: i === 0 && slice.source ? slice.source : item.reason,
}
}
return undefined
})
.filter(Boolean) as FeedPostSliceItem[],
})),
}
},
initialPageParam: undefined,
getNextPageParam: lastPage => lastPage.cursor,
enabled,
})
return {...out, pollLatest}
}
|
