Add group chat join links to supported embed types (#10454)

src/lib/api/index.ts

@@ -177,7 +177,8 @@ export async function post(
       writes: writes,
       validate: true,
     })
-  } catch (e: any) {
+  } catch (err) {
+    const e = err as Error
     logger.error(`Failed to create post`, {
       safeMessage: e.message,
     })
@@ -427,6 +428,16 @@ async function resolveMedia(
         },
       }
     }
+    if (resolvedLink.type === 'chat-invite' && resolvedLink.view) {
+      return {
+        $type: 'app.bsky.embed.external',
+        external: {
+          uri: resolvedLink.uri,
+          title: resolvedLink.view.name,
+          description: `${resolvedLink.view.memberCount}/${resolvedLink.view.memberLimit}`,
+        },
+      }
+    }
   }
   return undefined
 }
@@ -470,6 +481,7 @@ async function computeCid(record: AppBskyFeedPost.Record): Promise<string> {
 }
 
 // Returns a transformed version of the object for use in DAG-CBOR.
+// eslint-disable-next-line @typescript-eslint/no-explicit-any
 function prepareForHashing(v: any): any {
   // IMPORTANT: BlobRef#ipld() returns the correct object we need for hashing,
   // the API client will convert this for you but we're hashing in the client,
@@ -492,9 +504,10 @@ function prepareForHashing(v: any): any {
 
   // Walk through plain objects
   if (isPlainObject(v)) {
-    const obj: any = {}
+    const obj: Record<string, unknown> = {}
     let pure = true
     for (const key in v) {
+      // eslint-disable-next-line @typescript-eslint/no-unsafe-member-access
       let value = v[key]
       // `value` is undefined
       if (value === undefined) {
@@ -513,6 +526,7 @@ function prepareForHashing(v: any): any {
   return v
 }
 
+// eslint-disable-next-line @typescript-eslint/no-explicit-any
 function isPlainObject(v: any): boolean {
   if (typeof v !== 'object' || v === null) {
     return false

src/lib/api/resolve.ts

@@ -2,11 +2,12 @@ import {
   type AppBskyFeedDefs,
   type AppBskyGraphDefs,
   type BskyAgent,
+  type ChatBskyGroupDefs,
   type ComAtprotoRepoStrongRef,
 } from '@atproto/api'
 import {AtUri} from '@atproto/api'
 
-import {POST_IMG_MAX} from '#/lib/constants'
+import {DM_SERVICE_HEADERS, POST_IMG_MAX} from '#/lib/constants'
 import {getLinkMeta, type LinkMeta} from '#/lib/link-meta/link-meta'
 import {resolveShortLink} from '#/lib/link-meta/resolve-short-link'
 import {downloadAndResize} from '#/lib/media/manip'
@@ -16,6 +17,7 @@ import {
 } from '#/lib/strings/starter-pack'
 import {
   convertBskyAppUrlIfNeeded,
+  getChatInviteCodeFromUrl,
   isBskyCustomFeedUrl,
   isBskyListUrl,
   isBskyPostUrl,
@@ -71,12 +73,20 @@ type ResolvedStarterPackRecord = {
   view: AppBskyGraphDefs.StarterPackView
 }
 
+type ResolvedChatInvite = {
+  type: 'chat-invite'
+  uri: string
+  code: string
+  view?: ChatBskyGroupDefs.JoinLinkPreviewView
+}
+
 export type ResolvedLink =
   | ResolvedExternalLink
   | ResolvedPostRecord
   | ResolvedFeedRecord
   | ResolvedListRecord
   | ResolvedStarterPackRecord
+  | ResolvedChatInvite
 
 export class EmbeddingDisabledError extends Error {
   constructor() {
@@ -141,6 +151,19 @@ export async function resolveLink(
       view: res.data.list,
     }
   }
+  const chatInviteCode = getChatInviteCodeFromUrl(uri)
+  if (chatInviteCode) {
+    const res = await agent.chat.bsky.group.getJoinLinkPreviews(
+      {codes: [chatInviteCode]},
+      {headers: DM_SERVICE_HEADERS},
+    )
+    return {
+      type: 'chat-invite',
+      uri,
+      code: chatInviteCode,
+      view: res.data.joinLinkPreviews[0],
+    }
+  }
   if (isBskyStartUrl(uri) || isBskyStarterPackUrl(uri)) {
     const parsed = parseStarterPackUri(uri)
     if (!parsed) {