{# https://developer.mozilla.org/en-US/docs/Web/HTTP/Browser_detection_using_the_user_agent #}
{% macro browser(user_agent) %}
  {% if not user_agent %}
    {% trans %}Unknown{% endtrans %}
  {% elif 'Firefox/' in user_agent and 'Seamonkey/' not in user_agent %}
    Firefox
  {% elif 'Seamonkey/' in user_agent %}
    Seamonkey
  {% elif 'Chrome/' in user_agent and 'Chromium/' not in user_agent %}
    Chrome
  {% elif 'Chromium/' in user_agent %}
    Chromium
  {% elif 'Safari/' in user_agent and 'Chrome/' not in user_agent and 'Chromium/' not in user_agent %}
    Safari
  {% elif 'OPR/' in user_agent or 'Opera/' in user_agent %}
    Opera
  {% elif '; MSIE xyz;' in user_agent %}
    Internet Explorer
  {% elif 'Trident/7.0;' in user_agent %}
    Internet Explorer
  {% elif 'minarca/' in user_agent %}
    Minarca
  {% else %}
    {% trans %}Unknown{% endtrans %}
  {% endif %}
{% endmacro %}
{% macro os(user_agent) %}
  {% if not user_agent %}
    {% trans %}Unknown{% endtrans %}
  {% elif 'Linux' in user_agent %}
    Linux
  {% elif 'X11' in user_agent %}
    Unix
  {% elif 'Mac' in user_agent or 'Darwin' in user_agent %}
    MacOS
  {% elif 'Windows' in user_agent %}
    Windows
  {% else %}
    {% trans %}Unknown{% endtrans %}
  {% endif %}
{% endmacro %}
{% macro icon(user_agent) %}
  {%- set browser_icon_table = {
    "Firefox": "bi-browser-firefox",
    "Chrome": "bi-browser-chrome",
    "Chromium": "bi-browser-chrome",
    "Edge": "bi-browser-edge",
    "Safari": "bi-browser-safari"
  } -%}
  {{- browser_icon_table.get(browser(user_agent).strip() , 'bi-globe') -}}
{% endmacro %}