/* stylelint-disable scss/at-if-no-null */
@use "sass:map";
@use "sass:list";
@use "sass:string";

// Bootstrap functions
// Utility mixins and functions for evalutating source code across our variables, maps, and mixins.

// Ascending
// Used to evaluate Sass maps like our grid breakpoints.
@mixin _assert-ascending($map, $map-name) {
	$prev-key: null;
	$prev-num: null;
	@each $key, $num in $map {
		@if $prev-num == null {
			// Do nothing
		} @else if not comparable($prev-num, $num) {
			@warn "Potentially invalid value for #{$map-name}: This map must be in ascending order, but key '#{$key}' has value #{$num} whose unit makes it incomparable to #{$prev-num}, the value of the previous key '#{$prev-key}' !";
		} @else if $prev-num >= $num {
			@warn "Invalid value for #{$map-name}: This map must be in ascending order, but key '#{$key}' has value #{$num} which isn't greater than #{$prev-num}, the value of the previous key '#{$prev-key}' !";
		}
		$prev-key: $key;
		$prev-num: $num;
	}
}

// Descending
// Used to evaluate Sass maps like our grid breakpoints.
@mixin _assert-descending($map, $map-name) {
	$prev-key: null;
	$prev-num: null;
	@each $key, $num in $map {
		@if $prev-num == null or $prev-num == 0 {
			// Do nothing
		} @else if not comparable($prev-num, $num) {
			@warn "Potentially invalid value for #{$map-name}: This map must be in ascending order, but key '#{$key}' has value #{$num} whose unit makes it incomparable to #{$prev-num}, the value of the previous key '#{$prev-key}' !";
		} @else if $prev-num <= $num {
			@warn "Invalid value for #{$map-name}: This map must be in descending order, but key '#{$key}' has value #{$num} which isn't lesser than #{$prev-num}, the value of the previous key '#{$prev-key}' !";
		}
		$prev-key: $key;
		$prev-num: $num;
	}
}

// Starts at zero
// Another grid mixin that ensures the min-width of the lowest breakpoint starts at 0.
@mixin _assert-starts-at-zero($map) {
	$values: map.values($map);
	$first-value: list.nth($values, 1);
	@if $first-value != 0 {
		@warn "First breakpoint in `$grid-breakpoints` must start at 0, but starts at #{$first-value}.";
	}
}

// Replace `$search` with `$replace` in `$string`
// Used on our SVG icon backgrounds for custom forms.
// @author Hugo Giraudel
// @param {String} $string - Initial string
// @param {String} $search - Substring to replace
// @param {String} $replace ('') - New value
// @return {String} - Updated string
@function str-replace($string, $search, $replace: "") {
	$index: string.index($string, $search);

	@if $index {
		@return str-slice($string, 1, $index - 1) + $replace + str-replace(str-slice($string, $index + str-length($search)), $search, $replace);
	}

	@return $string;
}