/**
 * Return the Map representation of a columns properties
 * @param  		{Interger} 			[$count=null] 			The number of columns
 * @param 		{Number} 			[$gap=null] 			The gap width between each columns
 * @param 		{String} 			[$fill=null] 			The fill property (balance,auto,initial,inherit)
 * @param 		{Number} 			[$width=null] 			The width of the columns
 * @param 		{Integer|String} 	[$span=null] 			The column-span property (1,all,initial,inherit)
 * @param 		{List} 				[$rule=null] 			The column-rule property
 * @param 		{String} 			[$rule-style=null]  	The column-rule-style property
 * @param 		{Color} 			[$rule-color=null] 		The column-rule-color property
 * @param 		{Number} 			[$rule-width=null] 		The column-rule-width property
 * @return 		{Map} 										The map representation or the columns properties
 *
 * @example
 * s-columns-map(2, 20px);
 * // return
 * // (
 * // 	column-count : 2,
 * // 	column-gap : 20px
 * // )
 *
 * @author 			Olivier Bossel <olivier.bossel@gmail.com> (https://olivierbossel.com)
 */
@function s-columns-map(
  $count: null,
  $gap: null,
  $fill: null,
  $width: null,
  $span: null,
  $rule: null,
  $rule-style: null,
  $rule-color: null,
  $rule-width: null
) {
  @if $_sugar-test-arguments {
    $fill: s-test-argument(
      "s-columns-map",
      "fill",
      (balance, auto, initial, inherit),
      $fill
    );
    $rule-style: s-test-argument(
      "s-columns-map",
      "rule-style",
      (
        none,
        hidden,
        dotted,
        dashed,
        solid,
        double,
        groove,
        ridge,
        inset,
        outset,
        initial,
        inherit
      ),
      $rule-style
    );
    $count: s-test-argument("s-columns-map", "count", integer, $count);
    $gap: s-test-argument("s-columns-map", "gap", number, $gap);
    $width: s-test-argument("s-columns-map", "width", number, $width);
    $span: s-test-argument("s-columns-map", "span", number, $span);
    $rule-color: s-test-argument(
      "s-columns-map",
      "rule-color",
      color,
      $rule-color
    );
    $rule-width: s-test-argument(
      "s-columns-map",
      "rule-width",
      number,
      $rule-width
    );
    $rule: s-test-argument("s-columns-map", "rule", mixed, $rule);
  }

  $return: ();

  @if $count {
    $return: map-set($return, column-count, $count);
  }
  @if $width {
    $return: map-set($return, column-width, $width);
  }
  @if $rule {
    $return: map-set($return, column-rule, $rule);
  } @else {
    @if $rule-style {
      $return: map-set($return, column-rule-style, $rule-style);
    }
    @if $rule-color {
      $return: map-set($return, column-rule-color, $rule-color);
    }
    @if $rule-width {
      $return: map-set($return, column-rule-width, $rule-width);
    }
  }
  @if $gap {
    $return: map-set($return, column-gap, $gap);
  }
  @if $fill {
    $return: map-set($return, column-fill, $fill);
  }
  @if $span {
    $return: map-set($return, column-span, $span);
  }

  // return
  @return $return;
}