class Admin::Legacy::HumanResources::CategoryGroupsController <
    Admin::Legacy::HumanResources::Controller
  def index
    render_success :ok, json: groups.includes(:categories).ordered.map { |g| group_props(g) }
  end

  def show
    render_success :ok, json: group_props(group)
  end

  def create
    group = groups.build(group_params)
    if group.save
      render_success :ok, object: 'Group', json: group_props(group)
    else
      render_error :unprocessable_entity, errors: group
    end
  end

  def update
    if group.update(group_params)
      render_success :ok, object: 'Group', json: group_props(group)
    else
      render_error :unprocessable_entity, errors: group
    end
  end

  def destroy
    if group.destroy
      render_success :ok
    else
      render_error :unprocessable_entity, errors: group
    end
  end

  private
    def groups
      current_school.employee_category_groups
    end

    def group
      @group ||= groups.find_by(id: params[:id])
    end

    def group_params
      params.permit(:name, :description, :order)
    end

    def group_props(group)
      {}.tap do |props|
        props[:id] = group.id
        props[:name] = group.name
        props[:description] = group.description
        props[:order] = group.order
        props[:count] = group.categories.count
        props[:has_employees] = group.employee_category_users.exists?
      end
    end
end