// sass-lint:disable property-sort-order
////
/// @author Hugo Giraudel
////

/// Returns the opposite direction of each direction in a list
/// @since 1.0.0 - The Sith
/// @param {List} $directions - List of initial directions
/// @return {List} - List of opposite directions
/// @throw **@warn** No opposite direction can be found
/// @example scss
///    .triange-left {
///      border-#{opposite-direction(left)}: 1.5em solid gray;
///    }
@function opposite-direction($directions) {
	$opposite-directions: ();
	$direction-map: (
		"top": "bottom",
		"right": "left",
		"bottom": "top",
		"left": "right",
		"center": "center",
		"topleft": "top",
		"topright": "top",
		"bottomleft": "bottom",
		"bottomright": "bottom",
		"ltr": "rtl",
		"rtl": "ltr"
	);

	@each $direction in $directions {
		$direction: to-lower-case($direction);

		@if map-has-key($direction-map, $direction) {
			$opposite-directions: append($opposite-directions, unquote(map-get($direction-map, $direction)));
		} @else {
			@warn "No opposite direction can be found for `#{$direction}`. Direction omitted.";
		}
	}

	@return $opposite-directions;
}