Hide last message in chat list if it's blocked (bluesky-social#10800)

Author: ds-boyce

src/components/dms/getMessageInfo.ts

@@ -2,6 +2,7 @@ import {AppBskyEmbedRecord, ChatBskyConvoDefs} from '@atproto/api'
 import {type I18n} from '@lingui/core'
 import {msg} from '@lingui/core/macro'
 
+import {isBlockedOrBlocking} from '#/lib/moderation/blocked-and-muted'
 import {createSanitizedDisplayName} from '#/lib/moderation/create-sanitized-display-name'
 import {
   postUriToRelativePath,
@@ -13,6 +14,7 @@ export type UserMessageInfo = {
   message: string | null
   sentAt: string
   reportableMessage?: ChatBskyConvoDefs.MessageView
+  isBlockedMessage: boolean
 }
 
 export function getMessageInfo({
@@ -36,6 +38,7 @@ export function getMessageInfo({
   const isGroup = ChatBskyConvoDefs.isGroupConvo(convo.kind)
 
   const reportableMessage = isFromMe ? undefined : lastMessage
+  const isBlockedMessage = sender ? isBlockedOrBlocking(sender) : false
 
   const prefix = (message: string) => {
     if (isFromMe) {
@@ -89,5 +92,6 @@ export function getMessageInfo({
     message,
     sentAt: lastMessage.sentAt,
     reportableMessage,
+    isBlockedMessage,
   }
 }

src/lib/moderation/blocked-and-muted.ts

@@ -1,7 +1,7 @@
 import type * as bsky from '#/types/bsky'
 
 export function isBlockedOrBlocking(profile: bsky.profile.AnyProfileView) {
-  return profile.viewer?.blockedBy || profile.viewer?.blocking
+  return Boolean(profile.viewer?.blockedBy || profile.viewer?.blocking)
 }
 
 export function isMuted(profile: bsky.profile.AnyProfileView) {

src/screens/Messages/components/ChatListItem.tsx

@@ -331,7 +331,9 @@ function BaseChatItem({
         i18n,
       })
       if (info) {
-        lastMessage = info.message ?? lastMessage
+        lastMessage = info.isBlockedMessage
+          ? l`This message is hidden`
+          : (info.message ?? lastMessage)
         lastMessageSentAt = info.sentAt
       }
     }