On link, ensure group conversations are shown in search

ts/model-types.d.ts

@@ -379,6 +379,7 @@ export type ConversationAttributesType = {
   messageCount?: number;
   messageCountBeforeMessageRequests?: number | null;
   messageRequestResponseType?: number;
+  messagesDeleted?: boolean;
   muteExpiresAt?: number;
   dontNotifyForMentionsIfMuted?: boolean;
   sharingPhoneNumber?: boolean;

ts/models/conversations.ts

@@ -407,6 +407,8 @@ export class ConversationModel extends window.Backbone
     this.unset('tokens');
 
     this.on('change:members change:membersV2', this.fetchContacts);
+    this.on('change:active_at', this.onActiveAtChange);
+
     this.typingRefreshTimer = null;
     this.typingPauseTimer = null;
 
@@ -4446,6 +4448,13 @@ export class ConversationModel extends window.Backbone
     }
   }
 
+  private async onActiveAtChange(): Promise<void> {
+    if (this.get('active_at') && this.get('messagesDeleted')) {
+      this.set('messagesDeleted', false);
+      await DataWriter.updateConversation(this.attributes);
+    }
+  }
+
   async refreshGroupLink(): Promise<void> {
     if (!isGroupV2(this.attributes)) {
       return;
@@ -5243,6 +5252,7 @@ export class ConversationModel extends window.Backbone
       timestamp: null,
       active_at: null,
       pendingUniversalTimer: undefined,
+      messagesDeleted: true,
     });
     await DataWriter.updateConversation(this.attributes);
 

ts/state/ducks/conversations.ts

@@ -317,6 +317,7 @@ export type ConversationType = ReadonlyDeep<
     phoneNumber?: string;
     membersCount?: number;
     hasMessages?: boolean;
+    messagesDeleted?: boolean;
     accessControlAddFromInviteLink?: number;
     accessControlAttributes?: number;
     accessControlMembers?: number;

ts/state/ducks/search.ts

@@ -566,7 +566,7 @@ async function queryConversationsAndContacts(
   const normalizedQuery = removeDiacritics(query);
 
   const visibleConversations = allConversations.filter(conversation => {
-    const { activeAt, removalStage, isBlocked } = conversation;
+    const { activeAt, removalStage, isBlocked, messagesDeleted } = conversation;
 
     if (isDirectConversation(conversation)) {
       // if a conversation has messages (i.e. is not "deleted"), always show it
@@ -588,8 +588,8 @@ async function queryConversationsAndContacts(
       return true;
     }
 
-    // We don't show groups in search results that don't have any messages
+    // We don't show groups that were deleted in search results
-    return activeAt != null;
+    return !messagesDeleted;
   });
 
   const searchResults: Array<ConversationType> = filterAndSortConversations(

ts/util/getConversation.ts

@@ -195,6 +195,7 @@ export function getConversation(model: ConversationModel): ConversationType {
     markedUnread: attributes.markedUnread,
     membersCount: getMembersCount(attributes),
     memberships: getMemberships(attributes),
+    messagesDeleted: Boolean(attributes.messagesDeleted),
     hasMessages: (attributes.messageCount ?? 0) > 0,
     pendingMemberships: getPendingMemberships(attributes),
     pendingApprovalMemberships: getPendingApprovalMemberships(attributes),