{% # CSS Minifier v1.0.0 %}

{% doc %}
  @description Minify and return CSS. Returns nothing if the CSS is empty.

  @param {string} css - CSS to minify.
  @param {string} [base_selector] - CSS base selector.

  @example {% render 'utility--css-minifier', css: css, base_selector: base_selector %}
{% enddoc %}

{% liquid
  assign emptied_css = css | remove: base_selector | remove_first: '#' | remove_first: '{' | remove_last: '}' | strip
  if css == blank or emptied_css == blank
    continue
  endif

  assign css_chunk_list = css | strip_newlines | split: ' ' | join: ' ' | split: '*/'
  assign minified_css = ''
  for css_chunk in css_chunk_list
    assign minified_chunk = css_chunk | split: '/*' | first | strip
    assign minified_css = minified_css | append: minified_chunk
  endfor
  assign minified_css = minified_css | replace: '; ', ';' | replace: '} ', '}' | replace: '{ ', '{' | replace: ' {', '{' | replace: ': ', ':' | replace: ';}', '}' | replace: ') ;', ');'

  style
    echo minified_css
  endstyle
%}