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Add social proof to post page

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This commit is contained in:
Alex Benzer
2026-07-05 19:33:17 -07:00
parent b27ef2b6df
commit 511fb7894b
2 changed files with 165 additions and 23 deletions
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src/screens/PostThread/components/LikesStat.tsx
+163
View File
@@ -0,0 +1,163 @@
import {type AppBskyFeedDefs, AtUri, moderateProfile} from '@atproto/api'
import {Plural, Trans, useLingui} from '@lingui/react/macro'
import {makeProfileLink} from '#/lib/routes/links'
import {sanitizeDisplayName} from '#/lib/strings/display-names'
import {useModerationOpts} from '#/state/preferences/moderation-opts'
import {useLikedByQuery} from '#/state/queries/post-liked-by'
import {useSession} from '#/state/session'
import {atoms as a, useTheme} from '#/alf'
import {AvatarStack} from '#/components/AvatarStack'
import {InlineLinkText, Link} from '#/components/Link'
import {useFormatPostStatCount} from '#/components/PostControls/util'
import {ProfileHoverCard} from '#/components/ProfileHoverCard'
import {Text} from '#/components/Typography'
const AVI_SIZE = 20
/**
* The likes stat for the expanded anchor post. When the viewer follows some
* of the post's recent likers, renders social proof - a face pile plus
* "Liked by A, B, and N others" - in place of the plain "N likes" text,
* which it falls back to otherwise.
*
* Known likers are sourced client-side from the first page of `getLikes`, so
* they are a sample of the most recent likers, not an exhaustive list. Only
* the faces and names are affected by sampling - the "N others" count is
* derived from the post's total like count.
*/
export function LikesStat({post}: {post: AppBskyFeedDefs.PostView}) {
const t = useTheme()
const {t: l} = useLingui()
const {hasSession, currentAccount} = useSession()
const moderationOpts = useModerationOpts()
const formatPostStatCount = useFormatPostStatCount()
const likeCount = post.likeCount ?? 0
const enabled = hasSession && likeCount > 0
const {data} = useLikedByQuery(enabled ? post.uri : undefined)
if (likeCount === 0) return null
const urip = new AtUri(post.uri)
const likesHref = makeProfileLink(post.author, 'post', urip.rkey, 'liked-by')
/*
* Only the first page, even if the liked-by screen has loaded more into
* this same query cache. This keeps the sample bounds consistent and
* avoids reflowing the row as more pages arrive.
*/
const knownLikers = moderationOpts
? (data?.pages[0]?.likes ?? [])
.map(like => like.actor)
.filter(
actor =>
actor.did !== currentAccount?.did &&
actor.viewer?.following &&
!actor.viewer.muted &&
!actor.viewer.blocking &&
!actor.viewer.blockedBy,
)
: []
if (knownLikers.length === 0) {
return (
<Link to={likesHref} label={l`Likes on this post`}>
<Text
testID="likeCount-expanded"
style={[a.text_md, t.atoms.text_contrast_medium]}>
<Trans comment="Like count display, the <0> tags enclose the number of likes in bold (will never be 0)">
<Text style={[a.text_md, a.font_semi_bold, t.atoms.text]}>
{formatPostStatCount(likeCount)}
</Text>{' '}
<Plural value={likeCount} one="like" other="likes" />
</Trans>
</Text>
</Link>
)
}
const names = knownLikers.slice(0, 2).map(actor => {
const moderation = moderateProfile(actor, moderationOpts!)
return {
did: actor.did,
href: makeProfileLink(actor),
displayName: sanitizeDisplayName(
actor.displayName || actor.handle,
moderation.ui('displayName'),
),
}
})
const others = likeCount - names.length
const textStyle = [a.text_md, t.atoms.text_contrast_medium]
const nameStyle = [a.text_md, a.font_semi_bold, t.atoms.text]
/*
* Nested inside the row link, but the deepest link claims the press, so
* tapping a name goes to that profile while the rest of the row goes to
* the likes list. Same pattern as NotificationFeedItem's author links.
*/
const nameLink = (name: (typeof names)[number]) => (
<ProfileHoverCard key={name.did} did={name.did} inline>
<InlineLinkText
to={name.href}
label={l`Go to ${name.displayName}'s profile`}
disableMismatchWarning
emoji
style={nameStyle}>
{name.displayName}
</InlineLinkText>
</ProfileHoverCard>
)
return (
<Link
to={likesHref}
label={l`Likes on this post`}
/*
* Full width so the social proof always sits on its own line within
* the wrapping stats row, rather than wrapping mid-row and orphaning
* whichever count stat comes last.
*/
style={[a.w_full, a.flex_row, a.align_center, a.gap_sm]}>
<AvatarStack profiles={knownLikers.slice(0, 3)} size={AVI_SIZE} />
<Text
testID="knownLikersStat"
numberOfLines={1}
style={[a.flex_shrink, textStyle]}>
{names.length >= 2 ? (
others > 0 ? (
<Trans comment="Social proof on the likes stat; the bolded names are people the viewer follows who liked the post, and the count is the remaining number of likes">
{nameLink(names[0])}, {nameLink(names[1])}, and{' '}
<Plural
value={others}
one={`${formatPostStatCount(others)} other`}
other={`${formatPostStatCount(others)} others`}
/>{' '}
like this
</Trans>
) : (
<Trans comment="Social proof on the likes stat; the bolded names are people the viewer follows who liked the post and are its only likes">
{nameLink(names[0])} and {nameLink(names[1])} like this
</Trans>
)
) : others > 0 ? (
<Trans comment="Social proof on the likes stat; the bolded name is a person the viewer follows who liked the post, and the count is the remaining number of likes">
{nameLink(names[0])} and{' '}
<Plural
value={others}
one={`${formatPostStatCount(others)} other`}
other={`${formatPostStatCount(others)} others`}
/>{' '}
like this
</Trans>
) : (
<Trans comment="Social proof on the likes stat; the bolded name is a person the viewer follows who liked the post and is its only like">
{nameLink(names[0])} likes this
</Trans>
)}
</Text>
</Link>
)
}
src/screens/PostThread/components/ThreadItemAnchor.tsx
+2 -23
View File
@@ -28,6 +28,7 @@ import {type OnPostSuccessData} from '#/state/shell/composer'
import {useMergedThreadgateHiddenReplies} from '#/state/threadgate-hidden-replies'
import {type PostSource} from '#/state/unstable-post-source'
import {PreviewableUserAvatar} from '#/view/com/util/UserAvatar'
import {LikesStat} from '#/screens/PostThread/components/LikesStat'
import {ThreadItemAnchorFollowButton} from '#/screens/PostThread/components/ThreadItemAnchorFollowButton'
import {
LINEAR_AVI_WIDTH,
@@ -200,10 +201,6 @@ const ThreadItemAnchorInner = memo(function ThreadItemAnchorInner({
const authorHref = makeProfileLink(post.author)
const isThreadAuthor = getThreadAuthor(post, record) === currentAccount?.did
const likesHref = useMemo(() => {
const urip = new AtUri(post.uri)
return makeProfileLink(post.author, 'post', urip.rkey, 'liked-by')
}, [post.uri, post.author])
const repostsHref = useMemo(() => {
const urip = new AtUri(post.uri)
return makeProfileLink(post.author, 'post', urip.rkey, 'reposted-by')
@@ -444,6 +441,7 @@ const ThreadItemAnchorInner = memo(function ThreadItemAnchorInner({
a.py_md,
t.atoms.border_contrast_low,
]}>
<LikesStat post={post} />
{post.repostCount != null && post.repostCount !== 0 ? (
<Link to={repostsHref} label={l`Reposts of this post`}>
<Text
@@ -484,25 +482,6 @@ const ThreadItemAnchorInner = memo(function ThreadItemAnchorInner({
</Text>
</Link>
) : null}
{post.likeCount != null && post.likeCount !== 0 ? (
<Link to={likesHref} label={l`Likes on this post`}>
<Text
testID="likeCount-expanded"
style={[a.text_md, t.atoms.text_contrast_medium]}>
<Trans comment="Like count display, the <0> tags enclose the number of likes in bold (will never be 0)">
<Text
style={[a.text_md, a.font_semi_bold, t.atoms.text]}>
{formatPostStatCount(post.likeCount)}
</Text>{' '}
<Plural
value={post.likeCount}
one="like"
other="likes"
/>
</Trans>
</Text>
</Link>
) : null}
{post.bookmarkCount != null && post.bookmarkCount !== 0 ? (
<Text
testID="bookmarkCount-expanded"