Revert "Remove conversation URI (#11423)" (#11424)

This reverts commit 75f7f9930eb2a6f5c4041ec44fe0aa795c9ec449.

1 files changed, 11 insertions, 0 deletions

diff --git a/app/lib/activitypub/activity/create.rb b/app/lib/activitypub/activity/create.rb
index eb7b09e44..000b77df5 100644
--- a/app/lib/activitypub/activity/create.rb
+++ b/app/lib/activitypub/activity/create.rb
@@ -67,6 +67,7 @@ class ActivityPub::Activity::Create < ActivityPub::Activity
         sensitive: @object['sensitive'] || false,
         visibility: visibility_from_audience,
         thread: replied_to_status,
+        conversation: conversation_from_uri(@object['conversation']),
         media_attachment_ids: process_attachments.take(4).map(&:id),
         poll: process_poll,
       }
@@ -261,6 +262,16 @@ class ActivityPub::Activity::Create < ActivityPub::Activity
     ActivityPub::FetchRepliesWorker.perform_async(status.id, uri) unless uri.nil?
   end
 
+  def conversation_from_uri(uri)
+    return nil if uri.nil?
+    return Conversation.find_by(id: OStatus::TagManager.instance.unique_tag_to_local_id(uri, 'Conversation')) if OStatus::TagManager.instance.local_id?(uri)
+    begin
+      Conversation.find_or_create_by!(uri: uri)
+    rescue ActiveRecord::RecordInvalid, ActiveRecord::RecordNotUnique
+      retry
+    end
+  end
+
   def visibility_from_audience
     if equals_or_includes?(@object['to'], ActivityPub::TagManager::COLLECTIONS[:public])
       :public