Add: #595 リモート保留中アカウントからメンションが来た場合にuriを記録し、承認時にフェッチしに行く処理 (#620)

* Add: #591 リモート保留中アカウントからメンションが来た場合にuriを記録し、承認時にフェッチしに行く処理

* Rename fetch_remove_status_worker.rb to fetch_remote_status_worker.rb

* Wip

* Add lock code

app/lib/activitypub/activity/create.rb

@@ -50,6 +50,11 @@ class ActivityPub::Activity::Create < ActivityPub::Activity
   def create_status
     return reject_payload! if unsupported_object_type? || non_matching_uri_hosts?(@account.uri, object_uri) || tombstone_exists? || !related_to_local_activity?
 
+    if @account.suspended?
+      process_pending_status if @account.remote_pending?
+      return
+    end
+
     with_redis_lock("create:#{object_uri}") do
       return if delete_arrived_first?(object_uri) || poll_vote?
 
@@ -405,6 +410,20 @@ class ActivityPub::Activity::Create < ActivityPub::Activity
     ActivityPub::DistributePollUpdateWorker.perform_in(3.minutes, replied_to_status.id) unless replied_to_status.preloadable_poll.hide_totals?
   end
 
+  def process_pending_status
+    with_redis_lock("pending_status:#{@object['id']}") do
+      return if PendingStatus.exists?(uri: @object['id'])
+
+      fetch_account = as_array(@object['tag'])
+                      .filter_map { |tag| equals_or_includes?(tag['type'], 'Mention') && tag['href'] && ActivityPub::TagManager.instance.local_uri?(tag['href']) && ActivityPub::TagManager.instance.uri_to_resource(tag['href'], Account) }
+                      .first
+      fetch_account ||= (audience_to + audience_cc).filter_map { |uri| ActivityPub::TagManager.instance.local_uri?(uri) && ActivityPub::TagManager.instance.uri_to_resource(uri, Account) }.first
+      fetch_account ||= Account.representative
+
+      PendingStatus.create!(account: @account, uri: @object['id'], fetch_account: fetch_account)
+    end
+  end
+
   def resolve_thread(status)
     return unless status.reply? && status.thread.nil? && Request.valid_url?(in_reply_to_uri)