/** =====================================================================================
 *  Toolbox functions
 ===================================================================================== */


/**
 *  Maths helpers.
 *  Halve and double numbers, returning rounded integers.

    USAGE:

    .foo {
        padding: halve(30px);
    }

 */

@function quarter($number) {
	@return round($number / 4);
}

@function halve($number) {
	@return round($number / 2);
}

@function double($number) {
	@return round($number * 2);
}

@function triple($number) {
	@return round($number * 3);
}

@function quadruple($number) {
	@return round($number * 4);
}


/**
 *  Remove the unit of a length
 *  @param {Number} $number - Number to remove unit from
 *  @return {Number} - Unitless number
 */

@function strip-unit($number) {
	@if type-of($number) == 'number' and not unitless($number) {
		@return $number / ($number * 0 + 1);
	}

	@return $number;
}


/* Check if value is number */

@function is-number($value) {
	@return type-of($value) == 'number';
}


/* Value to Em */

@function valueToRem($value) {
	$noUnits: strip-unit($value);
	@return #{$noUnits / 16 * 1rem};
}

/* Value to Rem */

@function valueToEm($value) {
	$noUnits: strip-unit($value);
	@return #{$noUnits / 16 * 1em};
}


/**
 *	A simple function for accessing the colors from our mapping
 *	To access colors in our palette, we use a very simple custom Sass function

	USAGE:

	a {
		color: palette(primary);

		&:hover {
			color: palette(primary, 400);
		}
	}

 */

@function palette($palette, $level: 'base') {
	@if map-has-key($palettes, $palette) {

		@if map-has-key(map-get($palettes, $palette), $level) {
			@return map-get(map-get($palettes, $palette), $level);
		}

		// Color level not found, so set base as $level to prevent an error
		@warn "Unknown level `#{$level}` for color `#{$palette}` in $palette.";
		@return deeppink
	}

	@warn "Unknown color: `#{$palette}` in $palette. ";
	@return hotpink;
}


/**
 *	A simple function for setting a consistent box-shadow

	USAGE:

	.card {
		@include box-shadow;
	}

	.card--alt {
		@include box-shadow(low);
	}

 */
@mixin box-shadow($type: high) {
	@if ($type == 'high') {
		box-shadow: 0 10px 20px -10px $box-shadow-color;
	}
	@if ($type == 'low') {
		box-shadow: 0 2px 4px 0 $box-shadow-color;
	}
}

/**
 *	A simple function for setting a consistent border-radius

	USAGE:

	.card {
		@include border-radius;
	}

	.card--alt {
		@include border-radius(large);
	}

 */
@mixin border-radius($type: small) {
	@if ($type == 'small') {
		border-radius: $border-radius-small;
	}
	@if ($type == 'medium') {
		border-radius: $border-radius-medium;
	}
	@if ($type == 'large') {
		border-radius: $border-radius-large;
	}
}

/**
 * Lobotomized Owl Selector mixin:
 * - Set spacing for consecutive items with margin-top on all but the first item

	USAGE:

	.box {
		@include owl-children;
	}

	.card__item {
		@include owl;
	}

 */

// Gives the children of the element spacing
@mixin owl-children($margin: #{$line-height-ratio}rem) {
	& > * + * {
		margin-top: $margin;
	}
}

// Gives the element itself spacing
@mixin owl($margin: #{$line-height-ratio}rem) {
	& + & {
		margin-top: $margin;
	}
}

/**
 *  Show hyphens for every browser supporting it
 *  and will break lines in every other browser
 */

@mixin hyphenate {
	overflow-wrap: break-word;
	word-wrap: break-word;
	-webkit-hyphens: auto;
	-ms-hyphens: auto;
	hyphens: auto;
}

/*
 *  Restrict an element to a max-width for creating gutters on the side
 */
@mixin contain() {
	width: calc(100% - #{double($site-gutter-width)}); // Making sure it doesn't get to small with little content
	margin-left: auto;
	margin-right: auto;

	@include mq(m) {
		width: calc(100% / #{$tablet-columns + 2} * #{$tablet-columns});
	}

	@include mq(l) {
		width: calc(100% / #{$site-columns + 2} * #{$site-columns});
		max-width: $site-max-width;
	}
}