1 files changed, 58 insertions, 0 deletions
diff --git a/app/services/boards/lists/base_update_service.rb b/app/services/boards/lists/base_update_service.rb
new file mode 100644
index 00000000000..faf58e405fc
--- /dev/null
+++ b/app/services/boards/lists/base_update_service.rb
@@ -0,0 +1,58 @@
+# frozen_string_literal: true
+
+module Boards
+  module Lists
+    class BaseUpdateService < Boards::BaseService
+      def execute(list)
+        if execute_by_params(list)
+          success(list: list)
+        else
+          error(list.errors.messages, 422)
+        end
+      end
+
+      private
+
+      def execute_by_params(list)
+        update_preferences_result = update_preferences(list) if can_read?(list)
+        update_position_result = update_position(list) if can_admin?(list)
+
+        update_preferences_result || update_position_result
+      end
+
+      def update_preferences(list)
+        return unless preferences?
+
+        list.update_preferences_for(current_user, preferences)
+      end
+
+      def update_position(list)
+        return unless position?
+
+        move_service = Boards::Lists::MoveService.new(parent, current_user, params)
+
+        move_service.execute(list)
+      end
+
+      def preferences
+        { collapsed: Gitlab::Utils.to_boolean(params[:collapsed]) }
+      end
+
+      def preferences?
+        params.has_key?(:collapsed)
+      end
+
+      def position?
+        params.has_key?(:position)
+      end
+
+      def can_read?(list)
+        raise NotImplementedError
+      end
+
+      def can_admin?(list)
+        raise NotImplementedError
+      end
+    end
+  end
+end