Fix no notification being created when account is added to collection on creation (#38611)

app/models/collection_item.rb

@@ -47,6 +47,10 @@ class CollectionItem < ApplicationRecord
     update!(state: :revoked)
   end
 
+  def with_local_account?
+    account&.local?
+  end
+
   def local_item_with_remote_account?
     local? && account&.remote?
   end

app/services/create_collection_service.rb

@@ -9,6 +9,7 @@ class CreateCollectionService
 
     @collection.save!
 
+    notify_local_users
     distribute_add_activity
     distribute_feature_request_activities
 
@@ -39,6 +40,12 @@ class CreateCollectionService
     end
   end
 
+  def notify_local_users
+    @collection.collection_items.select(&:with_local_account?).each do |collection_item|
+      LocalNotificationWorker.perform_async(@account.id, collection_item.id, collection_item.class.name, 'added_to_collection')
+    end
+  end
+
   def activity_json
     ActiveModelSerializers::SerializableResource.new(@collection, serializer: ActivityPub::AddFeaturedCollectionSerializer, adapter: ActivityPub::Adapter).to_json
   end

spec/services/create_collection_service_spec.rb

@@ -62,6 +62,16 @@ RSpec.describe CreateCollectionService do
           end
         end
 
+        context 'when some accounts are local' do
+          it 'schedules notifications' do
+            subject.call(params, author)
+
+            expect(LocalNotificationWorker)
+              .to have_enqueued_sidekiq_job
+              .with(author.id, anything, 'CollectionItem', 'added_to_collection')
+          end
+        end
+
         context 'when some accounts are remote' do
           let(:accounts) { Fabricate.times(2, :remote_account, feature_approval_policy: (0b10 << 16)) }