/* ==========================================================================
 * Font related functions
 * ========================================================================== */


/**
 *  Mixin for setting font-size in REM through a Sass Map with all available sizes

    USAGE:

    .myClass {
        @include font-size(xl);
    }

 */

@mixin font-size($fs, $lh: null) {
  // Get correct key with font-size and line-height px value
  $font-size-properties: map-get($font-sizes, $fs);
  @if $font-size-properties {
    @include font-size(map-get($font-size-properties, font-size));

    @if($lh == null){
      line-height: map-get($font-size-properties, line-height) / map-get($font-size-properties, font-size);
    } @else {
      line-height: $lh / map-get($font-size-properties, font-size);
    }
  }
    // When mapping isn't found calculate as if PX-value was given and return REM value
  @else {
    @if is-number($fs) {
      font-size: valueToRem($fs);

      @if($lh != null){
        line-height: $lh / $fs;
      }
    }
    @else {
      @warn " `#{$fs}` is not a valid value. It must be one of the following: `#{$font-sizes}`";
    }
  }
}



/**
 *  Mixin for setting font-weight through a Sass Map with all available weights

    USAGE:

    .myClass {
        @include font-weight(semiBold);
    }


    .myClass {
        @include font-weight(medium);
    }

 */
@mixin font-weight($weight) {
  @if map-get($font-weights, $weight) {
    @include font-weight(map-get($font-weights, $weight));
  }
  @else {
    @if is-number($weight) {
      font-weight: $weight;
    }
    @else {
      @warn " `#{$weight}` is not a valid value. It must be one of the following: `#{$font-weights}`";
    }
  }
}


/**
 *	A simple function for accessing the font families from our mapping

	USAGE:

	span {
		@include font-family(primary);
	}

 */

@mixin font-family($family: 'base') {
  @if map-has-key($font-families, $family) {
    font-family: map-get($font-families, $family);
  }
  @else {
    @warn "Unknown family: `#{$family}` in $font-families. ";
    font-family: map-get($font-families, system);
  }
}