friendenstein/templates/header.html

{% set current_lang = config.default_language %}
{% if page %}
  {% set current_lang = page.lang %}
{% elif section %}
  {% set current_lang = section.lang %}
{% endif %}
{% if config.extra.header_nav %}
  <nav class="navBar">
    {% for nav_item in config.extra.header_nav %}
      <a href="{{ nav_item.url }}" class="{% if nav_item.url == current_url %}active{% endif %}">
        {% set language_key = 'name_' ~ current_lang %}
        {{ nav_item[language_key] }}
      </a>
    {% endfor %}

  <div class="themeSwitch">
    {% if not config.extra.default_theme %}
    <button class="themeButton light" onclick="setTheme('light')" title="Light mode"><svg class="icons icons__background"><use href="{{ get_url(path='icons.svg#lightMode', trailing_slash=false) | safe }}"></use></svg></button>
    <button class="themeButton dark" onclick="setTheme('dark')" title="Dark mode"><svg class="icons icons__background"><use href="{{ get_url(path='icons.svg#darkMode', trailing_slash=false) | safe }}"></use></svg></button>

    {% elif config.extra.default_theme and config.extra.default_theme == "light" %}
    <button class="themeButton light" onclick="setTheme('light')" title="Light mode"><svg class="icons icons__background"> <use href="{{ get_url(path='icons.svg#lightMode', trailing_slash=false) | safe }}"></use></svg></button>
    <button class="themeButton dark" onclick="setTheme('dark')" title="Dark mode"><svg class="icons icons__background"><use href="{{ get_url(path='icons.svg#darkMode', trailing_slash=false) | safe }}"></use></svg></button>

    {% elif config.extra.default_theme and config.extra.default_theme == "dark" %}
    <button class="themeButton dark" onclick="setTheme('dark')" title="Dark mode"><svg class="icons icons__background"><use href="{{ get_url(path='icons.svg#darkMode', trailing_slash=false) | safe }}"></use></svg></button>
    <button class="themeButton light" onclick="setTheme('light')" title="Light mode"><svg class="icons icons__background"><use href="{{ get_url(path='icons.svg#lightMode', trailing_slash=false) | safe }}"></use></svg></button>
    {% endif %}
  </div>
</nav>
{% endif %}