@use "config" as *;
@use "colors" as *;
@use "functions" as *;
@use "mixins/transition" as *;
@use "mixins/color-mode" as *;
@use "mixins/tokens" as *;

$carousel-tokens: () !default;

// scss-docs-start carousel-tokens
// stylelint-disable-next-line scss/dollar-variable-default
$carousel-tokens: defaults(
  (
    --carousel-control-color: #{$white},
    --carousel-control-width: 15%,
    --carousel-control-opacity: .5,
    --carousel-control-hover-opacity: .9,
    --carousel-control-transition: opacity .15s ease,
    --carousel-control-icon-filter: none,
    --carousel-indicator-width: 30px,
    --carousel-indicator-height: 3px,
    --carousel-indicator-hit-area-height: 10px,
    --carousel-indicator-spacer: 3px,
    --carousel-indicator-opacity: .5,
    --carousel-indicator-active-bg: var(--white),
    --carousel-indicator-active-opacity: 1,
    --carousel-indicator-transition: opacity .6s ease,
    --carousel-caption-width: 70%,
    --carousel-caption-color: var(--white),
    --carousel-caption-padding-y: 1.25rem,
    --carousel-caption-spacer: 1.25rem,
    --carousel-control-icon-width: 2rem,
    --carousel-control-prev-icon-bg: url("data:image/svg+xml,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='white'><path d='M11.354 1.646a.5.5 0 0 1 0 .708L5.707 8l5.647 5.646a.5.5 0 0 1-.708.708l-6-6a.5.5 0 0 1 0-.708l6-6a.5.5 0 0 1 .708 0'/></svg>"),
    --carousel-control-next-icon-bg: url("data:image/svg+xml,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='white'><path d='M4.646 1.646a.5.5 0 0 1 .708 0l6 6a.5.5 0 0 1 0 .708l-6 6a.5.5 0 0 1-.708-.708L10.293 8 4.646 2.354a.5.5 0 0 1 0-.708'/></svg>"),
    --carousel-transition-duration: .6s,
    --carousel-transition: transform .6s ease-in-out,
  ),
  $carousel-tokens
);
// scss-docs-end carousel-tokens

$carousel-dark-tokens: () !default;

// scss-docs-start carousel-dark-tokens
// stylelint-disable-next-line scss/dollar-variable-default
$carousel-dark-tokens: defaults(
  (
    --carousel-indicator-active-bg: #{$black},
    --carousel-caption-color: #{$black},
    --carousel-control-icon-filter: invert(1) grayscale(100),
  ),
  $carousel-dark-tokens
);
// scss-docs-end carousel-dark-tokens

// Notes on the classes:
//
// 1. .carousel.pointer-event should ideally be pan-y (to allow for users to scroll vertically)
//    even when their scroll action started on a carousel, but for compatibility (with Firefox)
//    we're preventing all actions instead
// 2. The .carousel-item-start and .carousel-item-end is used to indicate where
//    the active slide is heading.
// 3. .active.carousel-item is the current slide.
// 4. .active.carousel-item-start and .active.carousel-item-end is the current
//    slide in its in-transition state. Only one of these occurs at a time.
// 5. .carousel-item-next.carousel-item-start and .carousel-item-prev.carousel-item-end
//    is the upcoming slide in transition.

@layer components {
  .carousel {
    position: relative;
    @include tokens($carousel-tokens);
  }

  .carousel.pointer-event {
    touch-action: pan-y;
  }

  .carousel-inner {
    position: relative;
    display: flow-root;
    width: 100%;
    overflow: hidden;
  }

  .carousel-item {
    position: relative;
    display: none;
    float: inline-start;
    width: 100%;
    margin-inline-end: -100%;
    backface-visibility: hidden;
    @include transition(var(--carousel-transition));
  }

  .carousel-item.active,
  .carousel-item-next,
  .carousel-item-prev {
    display: block;
  }

  .carousel-item-next:not(.carousel-item-start),
  .active.carousel-item-end {
    transform: translateX(100%);
  }

  .carousel-item-prev:not(.carousel-item-end),
  .active.carousel-item-start {
    transform: translateX(-100%);
  }

  //
  // Alternate transitions
  //

  .carousel-fade {
    .carousel-item {
      opacity: 0;
      transition-property: opacity;
      transform: none;
    }

    .carousel-item.active,
    .carousel-item-next.carousel-item-start,
    .carousel-item-prev.carousel-item-end {
      z-index: 1;
      opacity: 1;
    }

    .active.carousel-item-start,
    .active.carousel-item-end {
      z-index: 0;
      opacity: 0;
      @include transition(opacity 0s var(--carousel-transition-duration));
    }
  }

  //
  // Left/right controls for nav
  //

  .carousel-control-prev,
  .carousel-control-next {
    position: absolute;
    inset-block: 0;
    z-index: 1;
    // Use flex for alignment (1-3)
    display: flex; // 1. allow flex styles
    align-items: center; // 2. vertically center contents
    justify-content: center; // 3. horizontally center contents
    width: var(--carousel-control-width);
    padding: 0;
    color: var(--carousel-control-color);
    text-align: center;
    background: none;
    filter: var(--carousel-control-icon-filter);
    border: 0;
    opacity: var(--carousel-control-opacity);
    @include transition(var(--carousel-control-transition));

    // Hover/focus state
    &:hover,
    &:focus {
      color: var(--carousel-control-color);
      text-decoration: none;
      outline: 0;
      opacity: var(--carousel-control-hover-opacity);
    }
  }
  .carousel-control-prev {
    inset-inline-start: 0;
    // stylelint-disable-next-line scss/at-function-named-arguments, @stylistic/function-whitespace-after
    background-image: if(sass($enable-gradients): linear-gradient(90deg, rgb(0 0 0 / .25), rgb(0 0 0 / .001)); else: null);
  }
  .carousel-control-next {
    inset-inline-end: 0;
    // stylelint-disable-next-line scss/at-function-named-arguments, @stylistic/function-whitespace-after
    background-image: if(sass($enable-gradients): linear-gradient(270deg, rgb(0 0 0 / .25), rgb(0 0 0 / .001)); else: null);
  }

  // Icons for within
  .carousel-control-prev-icon,
  .carousel-control-next-icon {
    display: inline-block;
    width: var(--carousel-control-icon-width);
    height: var(--carousel-control-icon-width);
    background-repeat: no-repeat;
    background-position: 50%;
    background-size: 100% 100%;
  }

  .carousel-control-prev-icon {
    background-image: var(--carousel-control-prev-icon-bg);
  }

  [dir="rtl"] .carousel-control-prev-icon {
    background-image: var(--carousel-control-next-icon-bg);
  }

  .carousel-control-next-icon {
    background-image: var(--carousel-control-next-icon-bg);
  }

  [dir="rtl"] .carousel-control-next-icon {
    background-image: var(--carousel-control-prev-icon-bg);
  }

  // Optional indicator pips/controls
  //
  // Add a container (such as a list) with the following class and add an item (ideally a focusable control,
  // like a button) with data-bs-target for each slide your carousel holds.

  .carousel-indicators {
    position: absolute;
    inset: auto 0 0;
    z-index: 2;
    display: flex;
    justify-content: center;
    padding: 0;
    // Use the .carousel-control's width as margin so we don't overlay those
    margin-inline: var(--carousel-control-width);
    margin-bottom: 1rem;

    [data-bs-target] {
      box-sizing: content-box;
      flex: 0 1 auto;
      width: var(--carousel-indicator-width);
      height: var(--carousel-indicator-height);
      padding: 0;
      margin-inline: var(--carousel-indicator-spacer);
      text-indent: -999px;
      cursor: pointer;
      background-color: var(--carousel-indicator-active-bg);
      background-clip: padding-box;
      border: 0;
      // Use transparent borders to increase the hit area by 10px on top and bottom.
      border-block: var(--carousel-indicator-hit-area-height) solid transparent;
      opacity: var(--carousel-indicator-opacity);
      @include transition(var(--carousel-indicator-transition));
    }

    .active {
      opacity: var(--carousel-indicator-active-opacity);
    }
  }

  // Optional captions
  //
  //

  .carousel-caption {
    position: absolute;
    right: calc((100% - var(--carousel-caption-width)) * .5);
    bottom: var(--carousel-caption-spacer);
    left: calc((100% - var(--carousel-caption-width)) * .5);
    padding-top: var(--carousel-caption-padding-y);
    padding-bottom: var(--carousel-caption-padding-y);
    color: var(--carousel-caption-color);
    text-align: center;
  }

  // Dark mode carousel

  @mixin carousel-dark() {
    @include tokens($carousel-dark-tokens);
  }

  .carousel-dark {
    @include carousel-dark();
  }

  @if $enable-dark-mode {
    @include color-mode(dark, true) {
      @include carousel-dark();
    }
  }
}