{#
/**
 * @file
 * Theme override 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.
 */
#}
{% 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, menu_name) }}

{% macro menu_links(items, attributes, menu_level, menu_name) %}
  {% import _self as menus %}
  {% if items %}
      {% if menu_level == 0 %}
        {%
          set menu_classes = [
            'navbar-nav',
            "nav--#{menu_name}",
            'nav--header-menu',
          ]
        %}
        <ul{{ attributes.addClass(menu_classes) }}>

        {% for item in items %}
          {%
            set item_classes = [
              'nav-item',
              'dropdown',
              'position-relative',
              item.below ? 'has-subnav',
              item.in_active_trail ? 'is-active-trail',
              item.is_collapsed ? 'is-collapsed',
              item.is_expanded ? 'is-expanded',
            ]
          %}
          {%
            set link_attributes = {
              'class': [
                'nav-link',
                'dropdown-toggle menu--link pb-4 px-0 mx-8',
                item.below ? 'has-subnav',
                item.in_active_trail ? 'is-active-trail',
                item.is_collapsed ? 'is-collapsed',
                item.is_expanded ? 'is-expanded',
              ],
              'data-toggle': [
                'dropdown',
              ]
            }
          %}

          {% set tabindex = { 'tabindex': 0 } %}
          {% set link_title = { 'title': item.title } %}

          <li{{ item.attributes.addClass(item_classes) }}>
            {{ link(item.title, item.url, link_attributes|merge(tabindex)|merge(link_title)) }}
            
            {% if item.below %}
              {{ menus.menu_links(item.below, attributes, menu_level + 1) }}
            {% endif %}
          </li>
        {% endfor %}
      {% else %}

        <ul class="nav--subnav dropdown-menu mt-0 p-0 rounded-0 border-0">

        {% for item in items %}
          {%
            set item_classes = [
              'nav-item',
              'dropdown-item p-0',
              item.below ? 'has-subnav',
              item.in_active_trail ? 'is-active-trail',
              item.is_collapsed ? 'is-collapsed',
              item.is_expanded ? 'is-expanded',
            ]
          %}
          {%
            set link_attributes = {
              'class': [
                'nav-link px-16 py-8 fs-12',
                item.below ? 'has-subnav',
                item.in_active_trail ? 'is-active-trail',
                item.is_collapsed ? 'is-collapsed',
                item.is_expanded ? 'is-expanded',
              ]
            }
          %}
          <li{{ item.attributes.addClass(item_classes) }}>
            {{ link(item.title, item.url, link_attributes) }}
            {% if item.below %}
              {{ menus.menu_links(item.below, attributes, menu_level + 1) }}
            {% endif %}
          </li>
        {% endfor %}
      {% endif %}
      </ul>
  {% endif %}
{% endmacro %}