////
/// Core Tool : Icon default
/// @group core
////

@use 'src/module/path';
@use 'src/module/spacing';
@use 'src/module/specificity';
@use 'src/module/preference';

/// Return icon size from map
/// @param {String} $size ['md'] - Icon size from `$icon-size-map` (Default to 'md' = 16px)
///
/// @example scss - Set icon size to `SM` (12px)
///   .foo {
///     width: icon-size(sm);
///     height: icon-size(sm);
///   }
@function icon-size($size: md) {
  @return spacing.space(map-get($icon-size-map, $size));
}

@function get-icon-url($icon, $important: false) {
  $config: map-get($icons-config, $icon);
  $url: url('#{path.dist()}#{map-get($config, path)}');
  @return specificity.important($url, $important);
}

@function get-icon-pseudo($restrain) {
  @if $restrain == before or $restrain == after {
    @return $restrain;
  }
  @return before after;
}

@mixin _icon-pseudo ($restrain: null) {
  @include _pseudo(get-icon-pseudo($restrain)) {
    @content;
  }
}

@mixin icon-size ($size:md, $restrain: null) {
  @include _icon-pseudo($restrain) {
    --icon-size: #{icon-size($size)};
    @content;
  }
}

@mixin icon-image ($icon, $restrain: null, $important: false) {
  $url: get-icon-url($icon, $important);

  @include _icon-pseudo($restrain) {
    @include mask-image($url);
  }
}

@mixin icon-style($restrain: null) {
  @include _icon-pseudo($restrain) {
    flex: 0 0 auto;
    display: inline-block;
    vertical-align: calc((0.75em - var(--icon-size)) * 0.5);
    background-color: currentColor;
    @include size(var(--icon-size), var(--icon-size));
    @include mask-image-size(100% 100%);
    @content;
  }
}

@mixin icon-content($is-before: true, $override: false) {
  $pseudos: before after;
  @if not $is-before {
    $pseudos: after before;
  }
  @include _pseudo(nth($pseudos, 1), '') {
    @content;
  }
  @if $override {
    @include _pseudo(nth($pseudos, 2), none);
  }
}

@mixin icon($icon: null, $size: md, $restrain: null, $styling: true, $is-before: $restrain != after, $override: false) {
  @if $styling {
    @include icon-style($restrain);
  }

  @if $icon != null {
    @include icon-image($icon, $restrain);
  }

  @if $size != null {
    @include icon-size($size, $restrain);
  }

  @if $is-before != null {
    @include icon-content($is-before, $override) {
      @content;
    }
  }
}

@mixin icon-forced-color($color: graytext, $adjust: false, $restrain: before after) {
  @include _pseudo($restrain) {
    @include preference.forced-colors {
      @if $adjust == true {
        forced-color-adjust: none;
      }
      background-color: $color;
    }
  }
}

@function filter-icons($category, $config: $icons-config) {
  $filtered: ();
  @each $icon, $setting in $config {
    @if map-get($setting, category) == $category {
      $filtered: map-merge($filtered, (#{$icon}: $setting));
    }
  }
  @return $filtered;
}

@mixin generate-icons($config: $icons-config) {
  @each $icon, $setting in $config {
    #{ns(icon-#{$icon})} {
      @include icon-image($icon);
    }
  }
}