{% comment %}
  Find previous and next episodes (if any).
{% endcomment %}
{% for episode in site.episodes  %}
  {% if episode.url == page.url %}
    {% unless forloop.first %}
      {% assign prev_episode = prev %}
    {% endunless %}
    {% unless forloop.last %}
      {% assign next_episode = site.episodes[forloop.index] %}
    {% endunless %}
  {% endif %}
  {% assign prev = episode %}
{% endfor %}

{% comment %}
  Display title and prev/next links.
{% endcomment %}
<div class="row">
  <div class="col-md-1">
    <h3>
      {% if prev_episode %}
      <a href="{{ site.github.url }}{{ prev_episode.url }}"><span class="glyphicon glyphicon-menu-left"></span></a>
      {% elsif site.github.url %}
      <a href="{{ site.github.url }}"><span class="glyphicon glyphicon-menu-up"></span></a>
      {% else %}
      <a href="/"><span class="glyphicon glyphicon-menu-up"></span></a>
      {% endif %}
    </h3>
  </div>
  <div class="col-md-10">
    <h3 class="maintitle"><a href="{{ site.github.url }}/">{{ site.title }}</a></h3>
    <h1 class="maintitle">{{ page.title }}</h1>
  </div>
  <div class="col-md-1">
    <h3>
      {% if next_episode %}
      <a href="{{ site.github.url }}{{ next_episode.url }}"><span class="glyphicon glyphicon-menu-right"></span></a>
      {% elsif site.github.url %}
      <a href="{{ site.github.url }}"><span class="glyphicon glyphicon-menu-up"></span></a>
      {% else %}
      <a href="/"><span class="glyphicon glyphicon-menu-up"></span></a>
      {% endif %}
    </h3>
  </div>
</div>
