{#
/**
 * @file
 * Default theme implementation to display a menu.
 *
 * 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.
 *
 * @ingroup themeable
 */
#}
{% import _self as menus %}

{#
  We call a macro which calls itself to render the full tree.
  @see http://twig.sensiolabs.org/doc/tags/macro.html
#}
{{ menus.menu_links(items, attributes, 0, link_classes) }}

{% macro menu_links(items, attributes, menu_level, link_classes) %}
  {% import _self as menus %}
  {% if items %}
    {% for item in items %}
      {#
        A child template can pass in a set of link_classes, which replace the
        default navbar-item class.
      #}
      {%
       set item_classes = (link_classes ?? [])|merge([
         item.in_active_trail ? 'is-in-active-trail',
       ])
      %}
      {# Bulma supports only a single level of dropdowns. #}
      {% if item.below and menu_level == 0 %}
        <div class="navbar-item has-dropdown is-hoverable">
        {%
          set item_classes = item_classes|merge([
            'navbar-link',
          ])
        %}
      {% else %}
        {% if not link_classes %}
          {%
            set item_classes = item_classes|merge([
              'navbar-item',
            ])
          %}
        {% endif %}
      {% endif %}
      {{ link(
        item.title,
        item.url,
        item.attributes.addClass(item_classes)
      ) }}
      {% if item.below and menu_level == 0 %}
        <div class="navbar-dropdown">
        {{ menus.menu_links(item.below, attributes, menu_level + 1, link_classes) }}
        </div>
      </div>
      {% endif %}
    {% endfor %}
  {% endif %}
{% endmacro %}