1 files changed, 23 insertions, 0 deletions
diff --git a/app/models/concerns/work_item_resource_event.rb b/app/models/concerns/work_item_resource_event.rb
new file mode 100644
index 00000000000..d0323feb029
--- /dev/null
+++ b/app/models/concerns/work_item_resource_event.rb
@@ -0,0 +1,23 @@
+# frozen_string_literal: true
+
+module WorkItemResourceEvent
+  extend ActiveSupport::Concern
+
+  included do
+    belongs_to :work_item, foreign_key: 'issue_id'
+  end
+
+  def work_item_synthetic_system_note(events: nil)
+    # System notes for label resource events are handled in batches, so that we have single system note for multiple
+    # label changes.
+    if is_a?(ResourceLabelEvent) && events.present?
+      return synthetic_note_class.from_events(events, resource: work_item, resource_parent: work_item.project)
+    end
+
+    synthetic_note_class.from_event(self, resource: work_item, resource_parent: work_item.project)
+  end
+
+  def synthetic_note_class
+    raise NoMethodError, 'must implement `synthetic_note_class` method'
+  end
+end