extract reusable loading/unavailable states for chat invites

Add ChatInvite.Loading and ChatInvite.Unavailable presentational parts,
and expose a single `status` enum from context instead of loose
loading/error booleans. Consumers (JoinRequestEmbed, ChatInviteEmbed,
MessageItemInviteEmbed, MessageInputEmbed) now branch on `status` and
share the markup. The message embed gains the "no longer available"
state it was previously missing.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

src/components/Post/Embed/ChatInviteEmbed.tsx

@@ -38,9 +38,9 @@ function ChatInviteEmbedBody({
   onOpen?: () => void
   style?: StyleProp<ViewStyle>
 }) {
-  const {error} = ChatInvite.useChatInvite()
+  const {status} = ChatInvite.useChatInvite()
 
-  if (error) {
+  if (status === 'error') {
     return <ExternalEmbed link={link} onOpen={onOpen} style={style} />
   }
 

src/components/Post/Embed/JoinRequestEmbed.tsx

@@ -1,6 +1,4 @@
 import {type StyleProp, View, type ViewStyle} from 'react-native'
-import {ChatBskyGroupDefs} from '@atproto/api'
-import {Trans} from '@lingui/react/macro'
 
 import {
   type ChatInvitePreview,
@@ -8,9 +6,6 @@ import {
 } from '#/state/queries/join-links'
 import {atoms as a, useTheme} from '#/alf'
 import * as ChatInvite from '#/components/dms/ChatInvite'
-import {Warning_Stroke2_Corner0_Rounded as WarningIcon} from '#/components/icons/Warning'
-import {Loader} from '#/components/Loader'
-import {Text} from '#/components/Typography'
 
 const JOIN_REQUEST_EMBED_HEIGHT = 140
 
@@ -58,62 +53,29 @@ export function JoinRequestEmbedBody({
   onOpen?: () => void
 }) {
   const t = useTheme()
-  const {loading, preview} = ChatInvite.useChatInvite()
+  const {status} = ChatInvite.useChatInvite()
 
-  if (loading) {
-    return (
-      <View
-        style={[
-          a.align_center,
-          a.justify_center,
-          a.p_lg,
-          a.border,
-          a.rounded_lg,
-          t.atoms.border_contrast_high,
-          {height: JOIN_REQUEST_EMBED_HEIGHT},
-          style,
-        ]}>
-        <Loader size="md" fill={t.atoms.text.color} />
-      </View>
-    )
+  const box = [
+    a.border,
+    a.rounded_lg,
+    t.atoms.border_contrast_high,
+    {height: JOIN_REQUEST_EMBED_HEIGHT},
+  ]
+
+  if (status === 'loading') {
+    return <ChatInvite.Loading style={[box, a.p_lg, style]} />
   }
 
-  if (!ChatBskyGroupDefs.isJoinLinkPreviewView(preview)) {
+  if (status !== 'available') {
     return (
-      <View
-        style={[
-          a.flex_row,
-          a.align_center,
-          a.justify_center,
-          a.p_lg,
-          a.gap_xs,
-          a.border,
-          a.rounded_lg,
-          t.atoms.border_contrast_high,
-          t.atoms.bg_contrast_25,
-          {height: JOIN_REQUEST_EMBED_HEIGHT},
-          style,
-        ]}>
-        <WarningIcon size="md" fill={t.atoms.text_contrast_medium.color} />
-        <Text style={[a.text_sm, a.font_medium, t.atoms.text_contrast_medium]}>
-          <Trans>Chat invite link no longer available</Trans>
-        </Text>
-      </View>
+      <ChatInvite.Unavailable
+        style={[box, a.p_lg, t.atoms.bg_contrast_25, style]}
+      />
     )
   }
 
   return (
-    <View
-      style={[
-        a.justify_between,
-        a.border,
-        a.rounded_lg,
-        a.p_lg,
-        a.gap_lg,
-        t.atoms.border_contrast_high,
-        {height: JOIN_REQUEST_EMBED_HEIGHT},
-        style,
-      ]}>
+    <View style={[a.justify_between, a.p_lg, a.gap_lg, box, style]}>
       <ChatInvite.Card size="large" />
       <ChatInvite.JoinButton onPress={onOpen} />
     </View>

src/components/dms/ChatInvite/Context.tsx

@@ -22,10 +22,20 @@ export type ChatInviteAction = {
   side: 'left' | 'right'
 }
 
+/**
+ * The resolved state of a chat invite:
+ * - `loading`: the preview is still being fetched.
+ * - `error`: the fetch failed (e.g. network). Surfaces may want to fall back to
+ *   a plain link rather than show a chat-specific error.
+ * - `unavailable`: the preview resolved but the link is disabled, invalid, or an
+ *   unrecognized variant - there's nothing to join.
+ * - `available`: a usable `JoinLinkPreviewView` is present.
+ */
+export type ChatInviteStatus = 'loading' | 'error' | 'unavailable' | 'available'
+
 export type ChatInviteContextValue = {
   code: string
-  loading: boolean
-  error: boolean
+  status: ChatInviteStatus
   preview: ChatInvitePreview | undefined
   /**
    * The derived action descriptor. Undefined while loading or when there's no

src/components/dms/ChatInvite/Loading.tsx

@@ -0,0 +1,18 @@
+import {type StyleProp, View, type ViewStyle} from 'react-native'
+
+import {atoms as a, useTheme} from '#/alf'
+import {Loader} from '#/components/Loader'
+
+/**
+ * Loading state for a chat invite: a centered spinner. The outer container
+ * (height, border, etc.) varies per surface, so pass it via `style`.
+ */
+export function Loading({style}: {style?: StyleProp<ViewStyle>}) {
+  const t = useTheme()
+
+  return (
+    <View style={[a.align_center, a.justify_center, style]}>
+      <Loader size="md" fill={t.atoms.text.color} />
+    </View>
+  )
+}

src/components/dms/ChatInvite/Root.tsx

@@ -18,7 +18,11 @@ import {type Props as SVGIconProps} from '#/components/icons/common'
 import {RaisingHand4Finger_Stroke2_Corner2_Rounded as HandIcon} from '#/components/icons/RaisingHand'
 import {useIntentDialogs} from '#/components/intents/IntentDialogs'
 import * as Toast from '#/components/Toast'
-import {type ChatInviteAction, ChatInviteProvider} from './Context'
+import {
+  type ChatInviteAction,
+  ChatInviteProvider,
+  type ChatInviteStatus,
+} from './Context'
 
 /**
  * Headless data + state owner for a chat invite. Fetches the join link preview
@@ -61,7 +65,18 @@ export function Root({
   })
 
   const preview = data?.joinLinkPreviews[0]
-  const loading = isPending && !preview
+
+  let status: ChatInviteStatus
+  if (isPending && !preview) {
+    status = 'loading'
+  } else if (error) {
+    status = 'error'
+  } else if (ChatBskyGroupDefs.isJoinLinkPreviewView(preview)) {
+    status = 'available'
+  } else {
+    // Resolved to a disabled/invalid/unrecognized preview - nothing to join.
+    status = 'unavailable'
+  }
 
   let action: ChatInviteAction | undefined
   if (ChatBskyGroupDefs.isJoinLinkPreviewView(preview)) {
@@ -135,8 +150,7 @@ export function Root({
   }
 
   return (
-    <ChatInviteProvider
-      value={{code, loading, error: !!error, preview, action, hasFixedHeight}}>
+    <ChatInviteProvider value={{code, status, preview, action, hasFixedHeight}}>
       {children}
     </ChatInviteProvider>
   )

src/components/dms/ChatInvite/Unavailable.tsx

@@ -0,0 +1,29 @@
+import {type StyleProp, View, type ViewStyle} from 'react-native'
+import {Trans} from '@lingui/react/macro'
+
+import {atoms as a, useTheme} from '#/alf'
+import {Warning_Stroke2_Corner0_Rounded as WarningIcon} from '#/components/icons/Warning'
+import {Text} from '#/components/Typography'
+import {useChatInvite} from './Context'
+
+/**
+ * "No longer available" state for a chat invite, shown when the link is
+ * disabled, invalid, or otherwise can't be resolved. The outer container
+ * (height, border, etc.) varies per surface, so pass it via `style`.
+ */
+export function Unavailable({style}: {style?: StyleProp<ViewStyle>}) {
+  const t = useTheme()
+  const {hasFixedHeight} = useChatInvite()
+
+  return (
+    <View
+      style={[a.flex_row, a.align_center, a.justify_center, a.gap_xs, style]}>
+      <WarningIcon size="md" fill={t.atoms.text_contrast_medium.color} />
+      <Text
+        style={[a.text_sm, a.font_medium, t.atoms.text_contrast_medium]}
+        allowFontScaling={!hasFixedHeight}>
+        <Trans>Chat invite link no longer available</Trans>
+      </Text>
+    </View>
+  )
+}

src/components/dms/ChatInvite/index.tsx

@@ -2,7 +2,10 @@ export {Card} from './Card'
 export {
   type ChatInviteAction,
   type ChatInviteContextValue,
+  type ChatInviteStatus,
   useChatInvite,
 } from './Context'
 export {JoinButton} from './JoinButton'
+export {Loading} from './Loading'
 export {Root} from './Root'
+export {Unavailable} from './Unavailable'

src/components/dms/MessageItemInviteEmbed.tsx

@@ -82,8 +82,7 @@ let MessageItemInviteEmbed = ({
             initialPreview={embed.joinLinkPreview}
             currentConvoId={convo.convo.view.id}
             hasFixedHeight={false}>
-            <ChatInvite.Card size="small" />
-            <ChatInvite.JoinButton />
+            <MessageItemInviteEmbedBody />
           </ChatInvite.Root>
         </View>
       </View>
@@ -92,3 +91,22 @@ let MessageItemInviteEmbed = ({
 }
 MessageItemInviteEmbed = memo(MessageItemInviteEmbed)
 export {MessageItemInviteEmbed}
+
+function MessageItemInviteEmbedBody() {
+  const {status} = ChatInvite.useChatInvite()
+
+  if (status === 'loading') {
+    return <ChatInvite.Loading style={a.py_lg} />
+  }
+
+  if (status !== 'available') {
+    return <ChatInvite.Unavailable style={a.py_sm} />
+  }
+
+  return (
+    <>
+      <ChatInvite.Card size="small" />
+      <ChatInvite.JoinButton />
+    </>
+  )
+}

src/screens/Messages/components/MessageInputEmbed.tsx

@@ -4,7 +4,6 @@ import {
   AppBskyFeedPost,
   AppBskyRichtextFacet,
   AtUri,
-  ChatBskyGroupDefs,
   moderatePost,
   RichText as RichTextAPI,
 } from '@atproto/api'
@@ -31,7 +30,6 @@ import {atoms as a, useTheme} from '#/alf'
 import {Button} from '#/components/Button'
 import * as ChatInvite from '#/components/dms/ChatInvite'
 import {TimesLarge_Stroke2_Corner0_Rounded as XIcon} from '#/components/icons/Times'
-import {Warning_Stroke2_Corner0_Rounded as WarningIcon} from '#/components/icons/Warning'
 import {Loader} from '#/components/Loader'
 import * as MediaPreview from '#/components/MediaPreview'
 import {ContentHider} from '#/components/moderation/ContentHider'
@@ -305,33 +303,14 @@ function MessageInputInviteEmbed({
 }
 
 function MessageInputInviteEmbedBody() {
-  const t = useTheme()
-  const {loading, preview} = ChatInvite.useChatInvite()
+  const {status} = ChatInvite.useChatInvite()
 
-  if (loading) {
-    return (
-      <View style={[{minHeight: 64}, a.justify_center, a.align_center]}>
-        <Loader />
-      </View>
-    )
+  if (status === 'loading') {
+    return <ChatInvite.Loading style={{minHeight: 64}} />
   }
 
-  if (!ChatBskyGroupDefs.isJoinLinkPreviewView(preview)) {
-    return (
-      <View
-        style={[
-          {minHeight: 64},
-          a.flex_row,
-          a.gap_xs,
-          a.justify_center,
-          a.align_center,
-        ]}>
-        <WarningIcon size="md" fill={t.atoms.text_contrast_medium.color} />
-        <Text style={[a.text_sm, a.font_medium, t.atoms.text_contrast_medium]}>
-          <Trans>Chat invite link no longer available</Trans>
-        </Text>
-      </View>
-    )
+  if (status !== 'available') {
+    return <ChatInvite.Unavailable style={{minHeight: 64}} />
   }
 
   return <ChatInvite.Card size="small" />