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|
import {
AppBskyFeedDefs,
AppBskyFeedPost,
AppBskyFeedGetPostThread,
} from '@atproto/api'
import {useQuery} from '@tanstack/react-query'
import {useSession} from '#/state/session'
import {UsePreferencesQueryResponse} from '#/state/queries/preferences/types'
import {STALE} from '#/state/queries'
export const RQKEY = (uri: string) => ['post-thread', uri]
type ThreadViewNode = AppBskyFeedGetPostThread.OutputSchema['thread']
export interface ThreadCtx {
depth: number
isHighlightedPost?: boolean
hasMore?: boolean
showChildReplyLine?: boolean
showParentReplyLine?: boolean
}
export type ThreadPost = {
type: 'post'
_reactKey: string
uri: string
post: AppBskyFeedDefs.PostView
record: AppBskyFeedPost.Record
parent?: ThreadNode
replies?: ThreadNode[]
viewer?: AppBskyFeedDefs.ViewerThreadState
ctx: ThreadCtx
}
export type ThreadNotFound = {
type: 'not-found'
_reactKey: string
uri: string
ctx: ThreadCtx
}
export type ThreadBlocked = {
type: 'blocked'
_reactKey: string
uri: string
ctx: ThreadCtx
}
export type ThreadUnknown = {
type: 'unknown'
uri: string
}
export type ThreadNode =
| ThreadPost
| ThreadNotFound
| ThreadBlocked
| ThreadUnknown
export function usePostThreadQuery(uri: string | undefined) {
const {agent} = useSession()
return useQuery<ThreadNode, Error>({
staleTime: STALE.MINUTES.ONE,
queryKey: RQKEY(uri || ''),
async queryFn() {
const res = await agent.getPostThread({uri: uri!})
if (res.success) {
return responseToThreadNodes(res.data.thread)
}
return {type: 'unknown', uri: uri!}
},
enabled: !!uri,
})
}
export function sortThread(
node: ThreadNode,
opts: UsePreferencesQueryResponse['threadViewPrefs'],
): ThreadNode {
if (node.type !== 'post') {
return node
}
if (node.replies) {
node.replies.sort((a: ThreadNode, b: ThreadNode) => {
if (a.type !== 'post') {
return 1
}
if (b.type !== 'post') {
return -1
}
const aIsByOp = a.post.author.did === node.post?.author.did
const bIsByOp = b.post.author.did === node.post?.author.did
if (aIsByOp && bIsByOp) {
return a.post.indexedAt.localeCompare(b.post.indexedAt) // oldest
} else if (aIsByOp) {
return -1 // op's own reply
} else if (bIsByOp) {
return 1 // op's own reply
}
if (opts.prioritizeFollowedUsers) {
const af = a.post.author.viewer?.following
const bf = b.post.author.viewer?.following
if (af && !bf) {
return -1
} else if (!af && bf) {
return 1
}
}
if (opts.sort === 'oldest') {
return a.post.indexedAt.localeCompare(b.post.indexedAt)
} else if (opts.sort === 'newest') {
return b.post.indexedAt.localeCompare(a.post.indexedAt)
} else if (opts.sort === 'most-likes') {
if (a.post.likeCount === b.post.likeCount) {
return b.post.indexedAt.localeCompare(a.post.indexedAt) // newest
} else {
return (b.post.likeCount || 0) - (a.post.likeCount || 0) // most likes
}
} else if (opts.sort === 'random') {
return 0.5 - Math.random() // this is vaguely criminal but we can get away with it
}
return b.post.indexedAt.localeCompare(a.post.indexedAt)
})
node.replies.forEach(reply => sortThread(reply, opts))
}
return node
}
// internal methods
// =
function responseToThreadNodes(
node: ThreadViewNode,
depth = 0,
direction: 'up' | 'down' | 'start' = 'start',
): ThreadNode {
if (
AppBskyFeedDefs.isThreadViewPost(node) &&
AppBskyFeedPost.isRecord(node.post.record) &&
AppBskyFeedPost.validateRecord(node.post.record).success
) {
return {
type: 'post',
_reactKey: node.post.uri,
uri: node.post.uri,
post: node.post,
record: node.post.record,
parent:
node.parent && direction !== 'down'
? responseToThreadNodes(node.parent, depth - 1, 'up')
: undefined,
replies:
node.replies?.length && direction !== 'up'
? node.replies.map(reply =>
responseToThreadNodes(reply, depth + 1, 'down'),
)
: undefined,
viewer: node.viewer,
ctx: {
depth,
isHighlightedPost: depth === 0,
hasMore:
direction === 'down' && !node.replies?.length && !!node.replyCount,
showChildReplyLine:
direction === 'up' ||
(direction === 'down' && !!node.replies?.length),
showParentReplyLine:
(direction === 'up' && !!node.parent) ||
(direction === 'down' && depth !== 1),
},
}
} else if (AppBskyFeedDefs.isBlockedPost(node)) {
return {type: 'blocked', _reactKey: node.uri, uri: node.uri, ctx: {depth}}
} else if (AppBskyFeedDefs.isNotFoundPost(node)) {
return {type: 'not-found', _reactKey: node.uri, uri: node.uri, ctx: {depth}}
} else {
return {type: 'unknown', uri: ''}
}
}
|
