document_navigation_list_helper.rb

module DocumentNavigationListHelper
  def document_navigation_list_item_tracking_attributes(tracking_attributes, title, path, index)
    tracking_attributes.deep_dup.tap do |t|
      t[:track_label] = path
      t[:track_options][:dimension29] = title
      t[:track_action] = "#{t[:track_action]}#{index + 1}"
    end
  end

  def document_navigation_list_tracking_attributes(list_count, list_index, category)
    {
      track_category: category,
      track_action: list_index ? "#{list_index + 1}." : "",
      track_options: {
        dimension28: list_count.to_s,
      },
    }
  end

  def document_navigation_list_params(list, tracking_attributes: nil, list_index: nil, category: nil, list_count: nil, list_title: nil)
    tracking_attributes ||= document_navigation_list_tracking_attributes(list.count, list_index, category)
    ga4_data = {}
    ga4_data[:index_section] = list_index + 1 if list_index
    ga4_data[:index_section_count] = list_count if list_count
    ga4_data[:section] = list_title if list_title

    {
      items: document_navigation_list_items(list, tracking_attributes),
      ga4_data:,
    }
  end

private

  def document_navigation_list_items(list, tracking_attributes)
    list.each_with_index.map do |list_item, list_item_index|
      {
        text: list_item.title,
        path: list_item.base_path,
        data_attributes: document_navigation_list_item_tracking_attributes(tracking_attributes, list_item.title, list_item.base_path, list_item_index),
      }
    end
  end
end