{#
/**
 * @file
 * Gutenberg Base theme override for navigation menus.
 *
 * Available variables:
 * - menu_name: The machine name of the menu.
 * - items: A nested list of menu items. Each menu item contains:
 *   - attributes: HTML attributes for the menu item.
 *   - below: The menu item child items.
 *   - title: The menu link title.
 *   - url: The menu link URL, instance of \Drupal\Core\Url.
 *   - localized_options: Menu link localized options.
 *   - is_expanded: TRUE if the link has visible children within the current
 *     menu tree.
 *   - is_collapsed: TRUE if the link has children within the current menu tree
 *     that are not currently visible.
 *   - in_active_trail: TRUE if the link is in the active trail.
 */
#}
{% import _self as menus %}
{% set attributes = attributes.addClass('menu') %}
{{ menus.menu_links(items, attributes, 0) }}

{% macro menu_links(items, attributes, menu_level) %}
  {% set level_class = 'menu--level-' ~ (menu_level + 1) %}
  {% import _self as menus %}
  {% if items %}
    <ul{{ attributes.addClass('menu', level_class) }}>
      {% set attributes = attributes.removeClass(level_class) %}
      {% for item in items %}
        {%
          set item_classes = [
            'menu__item',
            'menu__item--level-' ~ (menu_level + 1),
            item.in_active_trail ? 'menu__item--active-trail',
            item.below ? 'menu__item--has-children',
          ]
        %}
        {%
          set link_classes = [
            'menu__link',
            'menu__link--level-' ~ (menu_level + 1),
            item.in_active_trail ? 'menu__link--active-trail',
          ]
        %}
        <li{{ item.attributes.addClass(item_classes) }}>
          {{ link(item.title, item.url, {'class': link_classes, 'aria-current': item.url.isRouted and item.url.toString == url('<current>').toString ? 'page' : false}) }}
          {% if item.below %}
            {{ menus.menu_links(item.below, attributes, menu_level + 1) }}
          {% endif %}
        </li>
      {% endfor %}
    </ul>
  {% endif %}
{% endmacro %}
