{#
  This is an example template for documentation pages using full width documentation layout.
  Some details of it need to be edited to fit template and partial names in your project,
  or any other custom project-specific updates.

  See examples/README.md for more details on how to apply this template in your project.
#}
{% extends "base_layout.html" %}

{% block title %}[YOUR SITE TITLE HERE] - {{ document.title }} {% endblock %}

{% set is_docs = True %}
{% block body %}

{#
  This is a macro that generates side navigation
#}
{% macro create_navigation(nav_items, expandable=False, expanded=False) %}
  <ul class="p-side-navigation__list">
    {% for element in nav_items %}
    <li class="p-side-navigation__item">
      {% if element.navlink_href %}
      <a
        class="p-side-navigation__link {% if expandable and element.children %}is-expandable{% endif %}"
        href="{{ element.navlink_href }}"
        {% if expandable and element.children %}aria-expanded={% if expanded or element.is_active %}"true"{% else %}"false"{% endif %}{% endif %}
        {% if element.is_active and not element.navlink_fragment %}aria-current="page"{% endif %}
      >{{ element.navlink_text }}</a>
      {% else %}
        <strong
          class="p-side-navigation__text {% if expandable and element.children %}is-expandable{% endif %}"
          {% if expandable and element.children %}aria-expanded={% if expanded %}"true"{% else %}"false"{% endif %}{% endif %}
          {% if element.is_active %}aria-current="page"{% endif %}
        >{{ element.navlink_text }}</strong>
      {% endif %}

      {% if expandable %}
        {% if element.children %}
            <button class="p-side-navigation__expand" aria-expanded={% if element.is_active or element.has_active_child %}"true"{% else %}"false"{% endif %} aria-label="show submenu for {{ element.navlink_text }}"></button>
        {% endif %}
        {{ create_navigation(element.children, expandable, element.is_active or element.has_active_child) }}
      {% else %}
        {% if element.children %}
          {{ create_navigation(element.children, expandable) }}
        {% endif %}
      {% endif %}
    </li>
    {% endfor %}
  </ul>
{% endmacro %}

<div class="l-docs">
  {#
    HEADER AREA
    Contains top navigation and search box
  #}
  <div class="l-docs__header">
    {% include "_header.html" %}
    <section id="search-docs" class="p-strip is-shallow is-bordered l-docs__subgrid">
      <div class="l-docs__main">
        <div class="row">
          <form class="p-search-box u-no-margin--bottom" action="/docs/search">
            <input type="search" class="p-search-box__input" name="q" {% if query %}value="{{ query }}"{% endif %} placeholder="Search documentation" required/>
            <button type="submit" class="p-search-box__button"><i class="p-icon--search">Search</i></button>
          </form>
        </div>
      </div>
    </section>
  </div>

  {#
    SIDEBAR AREA
    Contains side navigation
  #}
  <div class="l-docs__sidebar">
    <div class="l-docs__sticky-container">
      <nav data-js="navigation" class="p-side-navigation" id="{{ navigation['path'] or 'default' }}" style="margin-top: 0.5rem">
        <div class="u-hide--large p-strip is-shallow">
          <div class="u-fixed-width">
            <a href="#{{ navigation['path'] or 'default' }}" class="p-side-navigation__toggle js-drawer-toggle" aria-controls="{{ navigation['path'] or 'default' }}">
              Toggle side navigation
            </a>
          </div>
        </div>
        <div class="p-side-navigation__overlay js-drawer-toggle" aria-controls="{{ navigation['path'] or 'default' }}"></div>
        <div class="p-side-navigation__drawer">
          <div class="p-side-navigation__drawer-header">
            <a href="#" class="p-side-navigation__toggle--in-drawer js-drawer-toggle" aria-controls="{{ navigation['path'] or 'default' }}">
              Toggle side navigation
            </a>
          </div>
          {% for nav_group in navigation.nav_items %}
          {% if not nav_group.hidden %}
            {% if nav_group.navlink_text %}
              {% if nav_group.navlink_href %}
              <h3 class="p-side-navigation__heading--linked">
                <a class="p-side-navigation__link" href="{{ nav_group.navlink_href }}" {% if nav_group.is_active %}aria-current="page"{% endif %}>
                  {{ nav_group.navlink_text }}
                </a>
              </h3>
              {% else %}
                <h3 class="p-side-navigation__heading">{{ nav_group.navlink_text }}</h3>
              {% endif %}
            {% endif %}
            {#
              Use `create_navigation(nav_group.children)` for a default, fully expanded navigation.
              Use `create_navigation(nav_group.children, expandable=True)` for the nested nav levels to expand only when parent page is active.
            #}
            {{ create_navigation(nav_group.children, expandable=True) }}
          {% endif %}
        {% endfor %}
        </div>
      </nav>
    </div>
  </div>

  {#
    TITLE AREA
    Contains page title (and possibly any other information to be displayed with it).
    Rendered above table of contents on smaller screens.
  #}
  <div class="l-docs__title">
    <div class="u-fixed-width">
      {% if document.title %}
      <div class="p-section--shallow u-no-padding--top">
        <h1 class="u-no-margin--bottom">{{ document.title }}</h1>
      </div>
      {% endif %}
    </div>
  </div>

  {#
    TABLE OF CONTENTS AREA
    Contains table of contents (and possibly any other meta data).
    Rendered on the right side of the page on larger screens, or between title and main content on smaller screens.
  #}
  {% if document.headings_map is defined and document.headings_map|length > 0 %}
    <div class="l-docs__meta">
      <div class="l-docs__sticky-container">
        <aside class="p-table-of-contents">
          <div class="p-table-of-contents__section">
            <h4 class="p-table-of-contents__header">On this page</h4>
            <nav class="p-table-of-contents__nav" aria-label="Table of contents">
              <ul class="p-table-of-contents__list">
                {% for heading in document.headings_map %}
                  <li class="p-table-of-contents__item"><a class="p-table-of-contents__link" href="#{{ heading.heading_slug }}">{{ heading.heading_text }}</a></li>
                  {% if heading.children %}
                    <ul class="p-table-of-contents__list">
                    {% for child in heading.children %}
                      <li class="p-table-of-contents__item"><a class="p-table-of-contents__link" href="#{{ child.heading_slug }}">{{ child.heading_text }}</a></li>
                      {% endfor %}
                    </ul>
                  {% endif %}
                {% endfor %}
              </ul>
            </nav>
          </div>
        </aside>
      </div>
    </div>
  {% endif %}


  {#
    MAIN CONTENT AREA
    Contains content of the document.
  #}
  <div class="l-docs__main u-text-max-width">
    <main class="u-fixed-width">
      <div class="p-strip is-shallow" style="overflow: visible;">
      {{ document.body_html | safe }}
      </div>

      <div class="p-strip is-shallow">
        <div class="p-notification--information">
          <div class="p-notification__content">
            <p class="p-notification__message">Last updated {{ document.updated }}. <a href="{{ forum_url }}{{ document.topic_path }}">Help improve this document in the forum</a>.</p>
          </div>
        </div>
      </div>
    </main>
  </div>

  {#
    FOOTER AREA
  #}
  <div class="l-docs__footer">
    {% include "_footer.html" %}
  </div>
</div>

<script>
// Based on Vanilla side navigation example
// Should be moved out from the template as part of a given project JS bundle

(function () {
  /**
    Toggles the expanded/collapsed classed on side navigation element.

    @param {HTMLElement} sideNavigation The side navigation element.
    @param {Boolean} show Whether to show or hide the drawer.
  */
  function toggleDrawer(sideNavigation, show) {
    const toggleButtonOutsideDrawer = sideNavigation.querySelector(
      ".p-side-navigation__toggle"
    );
    const toggleButtonInsideDrawer = sideNavigation.querySelector(
      ".p-side-navigation__toggle--in-drawer"
    );

    if (sideNavigation) {
      if (show) {
        sideNavigation.classList.remove("is-drawer-collapsed");
        sideNavigation.classList.add("is-drawer-expanded");

        toggleButtonInsideDrawer.focus();
        toggleButtonOutsideDrawer.setAttribute("aria-expanded", true);
        toggleButtonInsideDrawer.setAttribute("aria-expanded", true);
      } else {
        sideNavigation.classList.remove("is-drawer-expanded");
        sideNavigation.classList.add("is-drawer-collapsed");

        toggleButtonOutsideDrawer.focus();
        toggleButtonOutsideDrawer.setAttribute("aria-expanded", false);
        toggleButtonInsideDrawer.setAttribute("aria-expanded", false);
      }
    }
  }

  // throttle util (for window resize event)
  var throttle = function (fn, delay) {
    var timer = null;
    return function () {
      var context = this,
        args = arguments;
      clearTimeout(timer);
      timer = setTimeout(function () {
        fn.apply(context, args);
      }, delay);
    };
  };

  /**
    Attaches event listeners for the side navigation toggles
    @param {HTMLElement} sideNavigation The side navigation element.
  */
  function setupSideNavigation(sideNavigation) {
    var toggles = [].slice.call(
      sideNavigation.querySelectorAll(".js-drawer-toggle")
    );
    var drawerEl = sideNavigation.querySelector(".p-side-navigation__drawer");

    // hide navigation drawer on small screens
    sideNavigation.classList.add("is-drawer-hidden");

    // setup drawer element
    drawerEl.addEventListener("animationend", () => {
      if (!sideNavigation.classList.contains("is-drawer-expanded")) {
        sideNavigation.classList.add("is-drawer-hidden");
      }
    });

    window.addEventListener("keydown", (e) => {
      if (e.key === "Escape") {
        toggleDrawer(sideNavigation, false);
      }
    });

    // setup toggle buttons
    toggles.forEach(function (toggle) {
      toggle.addEventListener("click", function (event) {
        event.preventDefault();

        if (sideNavigation) {
          sideNavigation.classList.remove("is-drawer-hidden");
          toggleDrawer(
            sideNavigation,
            !sideNavigation.classList.contains("is-drawer-expanded")
          );
        }
      });
    });

    // hide side navigation drawer when screen is resized
    window.addEventListener(
      "resize",
      throttle(function () {
        toggles.forEach((toggle) => {
          return toggle.setAttribute("aria-expanded", false);
        });
        // remove expanded/collapsed class names to avoid unexpected animations
        sideNavigation.classList.remove("is-drawer-expanded");
        sideNavigation.classList.remove("is-drawer-collapsed");
        sideNavigation.classList.add("is-drawer-hidden");
      }, 10)
    );
  }

  /**
    Attaches event listeners for all the side navigations in the document.
    @param {String} sideNavigationSelector The CSS selector matching side navigation elements.
  */
  function setupSideNavigations(sideNavigationSelector) {
    // Setup all side navigations on the page.
    var sideNavigations = [].slice.call(
      document.querySelectorAll(sideNavigationSelector)
    );

    sideNavigations.forEach(setupSideNavigation);
  }

  setupSideNavigations('.p-side-navigation, [class*="p-side-navigation--"]');

  // Setup expandable side navigation

  var expandToggles = document.querySelectorAll(".p-side-navigation__expand");
  var navigationLinks = document.querySelectorAll(".p-side-navigation__link");

  // setup default values of aria-expanded for the toggle button, list title and list itself
  const setup = (toggle) => {
    const isExpanded = toggle.getAttribute("aria-expanded") === "true";
    if (!isExpanded) {
      toggle.setAttribute("aria-expanded", isExpanded);
    }
    const item = toggle.closest(".p-side-navigation__item");
    const link = item.querySelector(".p-side-navigation__link");
    const nestedList = item.querySelector(".p-side-navigation__list");
    if (!link?.hasAttribute("aria-expanded")) {
      link.setAttribute("aria-expanded", isExpanded);
    }
    if (!nestedList?.hasAttribute("aria-expanded")) {
      nestedList.setAttribute("aria-expanded", isExpanded);
    }
  };

  const handleToggle = (e) => {
    const item = e.currentTarget.closest(".p-side-navigation__item");
    const button = item.querySelector(".p-side-navigation__expand");
    const link = item.querySelector(".p-side-navigation__link");
    const nestedList = item.querySelector(".p-side-navigation__list");
    [button, link, nestedList].forEach((el) =>
      el.setAttribute(
        "aria-expanded",
        el.getAttribute("aria-expanded") === "true" ? "false" : "true"
      )
    );
  };

  expandToggles.forEach((toggle) => {
    setup(toggle);
    toggle.addEventListener("click", (e) => {
      handleToggle(e);
    });
  });
})();
</script>
{% endblock %}