Reduce AbcSize for StoryOperations

.rubocop.yml

@@ -61,7 +61,6 @@ Metrics/MethodLength:
 Metrics/AbcSize:
   Enabled: true
   Exclude:
-    - 'app/operations/story_operations.rb'
     - 'app/operations/story_operations/state_change_notification.rb'
     - 'app/operations/note_operations.rb'
     - 'app/serializers/project_serializer.rb'

app/operations/story_operations.rb

@@ -23,20 +23,29 @@ def before_save
     end
 
     def after_save
-      new_documents = model.documents_attributes
-      if new_documents != model.documents_attributes_was
+      create_changesets
+      apply_fixes
+      notify_state_changed
+      notify_users
+    end
+
+    private
+
+    def documents_changed?
+      model.documents_attributes != model.documents_attributes_was
+    end
+
+    def create_changesets
+      if documents_changed?
         model.instance_variable_set(
           '@changed_attributes',
-          model.instance_variable_get('@changed_attributes')
-            .merge(documents_attributes: model.documents_attributes_was)
+          model.instance_variable_get('@changed_attributes').merge(
+            documents_attributes: model.documents_attributes_was
+          )
         )
       end
-      model.changesets.create!
-
-      apply_fixes
 
-      notify_state_changed
-      notify_users
+      model.changesets.create!
     end
   end