{% comment %}
This file contains everything that should be included in each page's head tag.
{% endcomment %}


{% comment %}
Global site tag (gtag.js) - Google Analytics
This will only be included in production mode so local testing doesn't affect
the tracking result.
{% endcomment %}
{% if jekyll.environment == 'production' %}
<script async src="https://www.googletagmanager.com/gtag/js?id=UA-112820770-1"></script>
<script>
  window.dataLayer = window.dataLayer || [];

  function gtag() {
    dataLayer.push(arguments);
  }
  gtag('js', new Date());

  gtag('config', 'UA-112820770-1');
</script>
{% endif %}

{% case page.layout %}

{% when 'video' %}
{% include 1-tools/series-for-video.html video=page %}
{% assign series = out_series %}
{% include 1-tools/series-for-video.html video=series %}
{% assign course = out_series %}
<title>{{ page.title }} - {{ course.title | default: series.title }} {{ page.video_type }}
  #{% if series.series_number %}{{ series.series_number }}.{% endif %}{{ page.video_number }} · {{ site.title }}</title>


{% when 'series-index' %}
{% include 1-tools/series-for-video.html video=page %}
<title>{{ page.title }} {% if page.series_number %}- {{ out_series.title }} {{ page.video_type }}
  #{{ page.series_number }} {% endif %}· {{ site.title }}</title>

{% else %}
{% if page.title %}
<title>{{ page.title }} · {{ site.title }}</title>
{% else %}
<title>{{ site.title }}</title>
{% endif %}

{% endcase %}

<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">

<link rel="stylesheet" href="{{ '/assets/css/main.css' | relative_url }}">
<link rel="icon" href="{{ '/assets/images/favicon.png?v=1.0' | relative_url }}">
<link rel="apple-touch-icon" href="{{ '/assets/images/favicon.png?v=1.0' | relative_url }}">
<script src="https://www.youtube.com/iframe_api"></script>
<script src="{{ '/assets/javascript/functions.js' | relative_url }}"></script>
<script type="text/javascript" src="https://unpkg.com/smoothscroll-polyfill@0.4.4/dist/smoothscroll.js"></script>

{% comment %}
Data for SEO for easier sharing and being searched
{% endcomment %}
{% seo %}