{% assign tableOfContents = "Table of Contents" %}

{% assign notFound = "Page Not Found" %}

{% assign toc_pages = site.pages | where: "toc", true %}

{% assign pages_sorted = toc_pages | concat: site.ways | sort: 'order' %}

{% assign ways_count = pages_sorted | size %}

{% for way in pages_sorted %}

{% if way.path == page.path %}

{% assign idxp = forloop.index | minus: 1 | minus: 1 %}

{% assign idxn = forloop.index | plus: 1 | minus: 1 %}

{% endif %}

{% if way.title == tableOfContents %}

{% assign idxtoc = forloop.index | minus: 1 %}

{% endif %}

{% endfor %}

{% assign previousLesson = pages_sorted[idxp] %}

{% assign toc = pages_sorted[idxtoc] %}

{% assign nextLesson = pages_sorted[idxn] %}

{% if include.style == "compact" %}

<ul class="way__navigation">

{% if idxp < 0 %}

<li></li>

{% else %}

<li><a href="{{ previousLesson.url | absolute_url }}" title="Previous"></a></li>

{% endif %}

{% unless previousLesson.title == notFound or page.title == tableOfContents %}

<li><a href="{{ toc.url | absolute_url }}" title="{{ toc.title }}">ToC</a></li>

{% endunless %}

{% if idxn >= ways_count %}

<li></li>

{% else %}

<li><a href="{{ nextLesson.url | absolute_url }}" title="Next"></a></li>

{% endif %}

</ul>

{% else %}

<ul class="way__navigation">

{% if idxp < 0 %}

<li></li>

{% else %}

<li><a href="{{ previousLesson.url | absolute_url }}" title="{{ previousLesson.subtitle }}">

{% unless previousLesson.title == tableOfContents %}{{ previousLesson.title }}{% endunless %}

</a></li>

{% endif %}

{% unless previousLesson.title == notFound or page.title == tableOfContents %}

<li><a href="{{ toc.url | absolute_url }}">{{ toc.title }}</a></li>

{% endunless %}

{% if idxn >= ways_count %}

<li></li>

{% else %}

<li>

<a href="{{ nextLesson.url | absolute_url }}" title="{{ nextLesson.subtitle }}">

{{ nextLesson.title }}

</a>

</li>

{% endif %}

</ul>

{% endif %}