{% comment %}
  Lesson navigation bar.
{% endcomment %}
<nav class="navbar navbar-default">
  <div class="container-fluid">
    <div class="navbar-header">
      <button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#bs-example-navbar-collapse-1" aria-expanded="false">
        <span class="sr-only">Toggle navigation</span>
        <span class="icon-bar"></span>
        <span class="icon-bar"></span>
        <span class="icon-bar"></span>
      </button>

      {% comment %} Select what logo to display. {% endcomment %}
      {% if page.carpentry == "swc" %}
      <a href="{{ site.swc_site }}" class="pull-left">
        <img class="navbar-logo" src="{{ page.root }}/assets/img/swc-icon-blue.svg" alt="Software Carpentry logo" />
      </a>
      {% elsif page.carpentry == "dc" %}
      <a href="{{ site.dc_site }}" class="pull-left">
        <img class="navbar-logo" src="{{ page.root }}/assets/img/dc-icon-black.svg" alt="Data Carpentry logo" />
      </a>
      {% elsif page.carpentry == "lc" %}
      <a href="{{ site.lc_site }}" class="pull-left">
        <img class="navbar-logo" src="{{ page.root }}/assets/img/lc-icon-black.png" alt="Library Carpentry logo" />
      </a>
      {% endif %}

      {% comment %} Always show link to home page. {% endcomment %}
      <a class="navbar-brand" href="{{ page.root }}{% link index.md %}">Home</a>

    </div>
    <div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1">
      <ul class="nav navbar-nav">

	{% comment %} Always show code of conduct. {% endcomment %}
        <li><a href="{{ page.root }}{% link CONDUCT.md %}">Code of Conduct</a></li>

        {% if site.kind == "lesson" %}
	{% comment %} Show setup instructions. {% endcomment %}
        <li><a href="{{ page.root }}{% link setup.md %}">Setup</a></li>

        {% comment %} Show lesson episodes for lessons. {% endcomment %}
        <li class="dropdown">
          <a href="{{ page.root }}/" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-haspopup="true" aria-expanded="false">Episodes <span class="caret"></span></a>
          <ul class="dropdown-menu">
            {% for episode in site.episodes %}
            <li><a href="{{ page.root }}{{ episode.url }}">{{ episode.title }}</a></li>
            {% endfor %}
	    <li role="separator" class="divider"></li>
            <li><a href="{{ page.root }}{% link aio.md %}">All in one page (Beta)</a></li>
          </ul>
        </li>
	{% endif %}

	{% comment %} Show extras for lessons or if this is the main workshop-template repo (where they contain documentation). {% endcomment %}
	{% if site.kind == "lesson" %}
        <li class="dropdown">
          <a href="{{ page.root }}/" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-haspopup="true" aria-expanded="false">Extras <span class="caret"></span></a>
          <ul class="dropdown-menu">
            <li><a href="{{ page.root }}{% link reference.md %}">Reference</a></li>
            {% for extra in site.extras %}
            <li><a href="{{ page.root }}{{ extra.url }}">{{ extra.title }}</a></li>
            {% endfor %}
          </ul>
        </li>
	{% endif %}

	{% comment %} Always show license. {% endcomment %}
        <li><a href="{{ page.root }}{% link LICENSE.md %}">License</a></li>
	{% if page.source %}
	{% if page.source == "Rmd" %}
	<li><a href="{{site.github.repository_url}}/edit/gh-pages/{{page.path|replace: "_episodes", "_episodes_rmd" | replace: ".md", ".Rmd"}}">Improve this page <span class="glyphicon glyphicon-pencil" aria-hidden="true"></span></a></li>
	{% endif %}
	{% else %}
	<li><a href="{{site.github.repository_url}}/edit/gh-pages/{{page.path}}">Improve this page <span class="glyphicon glyphicon-pencil" aria-hidden="true"></span></a></li>
	{% endif %}
      </ul>
      <form class="navbar-form navbar-right" role="search" id="search" onsubmit="google_search(); return false;">
        <div class="form-group">
          <input type="text" id="google-search" placeholder="Search..." aria-label="Google site search">
        </div>
      </form>
    </div>
  </div>
</nav>
