{% macro nav_item(name, label) %}
<li class="nav-item{% if name == active %} active{% endif %}">
  <a class="nav-link" href="{{ url_for(name) }}">{{ label }}{% if name == active %} <span class="sr-only">(current)</span>{% endif %}</a>
</li>
{% endmacro %}

{% macro navbar_inner(name) %}
  <button class="navbar-toggler navbar-toggler-right" type="button" data-toggle="collapse" data-target="#navbarSupportedContent" aria-controls="navbarSupportedContent" aria-expanded="false" aria-label="Toggle navigation">
    <span class="navbar-toggler-icon"></span>
  </button>
  <a class="navbar-brand" href="{{ url_for('browse_page') }}">Wikidata Art Depiction Explorer</a>

  <div class="collapse navbar-collapse" id="navbarSupportedContent">
    <ul class="navbar-nav mr-auto">
    <ul class="navbar-nav mr-auto">
      {{ nav_item('browse_page', 'Browse') }}
      {{ nav_item('list_edits', 'Recent changes') }}
      {{ nav_item('random_artwork', 'Random artwork') }}
    </ul>
    </ul>
    <ul class="navbar-nav">
      <li class="nav-item">
        {% if g.user %}
          <li class="nav-item">
            <a class="nav-link" href="{{ url_for('user_page', username=g.user) }}">{{ g.user }}</a>
          </li>
          <li class="nav-item">
            <a class="nav-link" href="{{ url_for('oauth_disconnect', next=request.script_root + request.full_path) }}">switch user</a>
          </li>
        {% else %}
          <li class="nav-item">
            {% set login_url = url_for('start_oauth', next=request.script_root + request.full_path) %}
            <a class="nav-link" href="{{ login_url }}">connect with Wikidata</a>
          </li>
        {% endif %}
    </ul>
  </div>
{% endmacro %}

{% macro navbar() %}
<nav class="navbar navbar-toggleable-md navbar-expand-lg navbar-dark bg-dark">
  {{ navbar_inner() }}
</nav>
{% endmacro %}