{% extends "base.html" %}

{% block content %}

{% if page.nb_url %}
  {# Parse notebook path/URL #}
  {% set parts = page.nb_url.split('/') %}
  {% set tutorial_name = parts[-2] %}
  {% set filename = parts[-1] %}

  {# Directory of this page on gh-pages. Tutorials are grouped into
     category folders (tutorials/fitting/simple_fitting/), so take the
     path from the page URL instead of assuming tutorials/<name>/. #}
  {% if page.url.endswith('/') %}
    {% set page_dir = page.url %}
  {% else %}
    {% set page_dir = page.url.rsplit('/', 1)[0] ~ "/" ~ tutorial_name ~ "/" %}
  {% endif %}

  {# Colab url #}
  {% set base_colab_url = "https://colab.research.google.com/github/" %}
  {% set colab_url =
    base_colab_url ~ config.extra.vars.github_repository ~
    "/blob/gh-pages/" ~ config.extra.vars.docs_version ~
    "/" ~ page_dir ~ filename
  %}

  {# Download link: relative to the current page #}
  {% set file_url = filename %}

  {# Open in Colab (absolute GitHub URL; works anywhere) #}
  <a href="{{ colab_url }}"
     title="Open in Google Colab"
     class="md-content__button md-icon">
    {% include ".icons/google-colab.svg" %}
  </a>

  {# Download: use a RELATIVE link to the file next to this page #}
  <a href="{{ file_url }}"
     download="{{ file_url }}"
     title="Download Notebook"
     class="md-content__button md-icon">
    {% include ".icons/material/download.svg" %}
  </a>
{% endif %}

{{ super() }}
{% endblock content %}