/*
Number input (a field with a decrease and an increase button)
 */
@use 'sass:map';
@use '../../config' as *;

// One bordered box, like a `.form-control`: the field in the middle and the
// two buttons inside it have no border of their own.
.number-input {
  // scss-docs-start number-input-css-vars
  --number-input-input-width: #{$number-input-input-width};
  --number-input-bg: #{$number-input-bg};
  --number-input-border-color: #{$number-input-border-color};
  --number-input-border-radius: #{$number-input-border-radius};
  // scss-docs-end number-input-css-vars
  position: relative;
  display: inline-flex;
  align-items: stretch;
  // Never stretched by a flex column parent: the box is as wide as its parts
  width: fit-content;
  vertical-align: middle;
  background-color: var(--number-input-bg);
  border: $input-border-width solid var(--number-input-border-color);
  box-shadow: $input-box-shadow;
  @include border-radius(var(--number-input-border-radius));
  @include focus-ring-transition(border-color);

  // The box carries the focus ring for the field inside it.
  &:focus-within {
    --focus-ring-offset: -1px;
    border-color: $input-focus-border-color;
    @include focus-ring(true);
  }

  &:has(> .form-control:disabled) {
    background-color: $input-disabled-bg;
  }

  > .form-control {
    // stylelint-disable-next-line length-zero-no-unit
    --control-border-width: 0px;
    flex: 0 0 auto;
    width: var(--number-input-input-width);
    min-width: 0;
    padding-inline: 0.25rem;
    text-align: center;
    appearance: textfield;
    background-color: transparent;
    border: 0;
    border-radius: 0;
    box-shadow: none;

    // A `type="number"` field keeps its keyboard behaviour but loses the
    // native spin buttons, which the number input's own buttons replace.
    &::-webkit-inner-spin-button,
    &::-webkit-outer-spin-button {
      margin: 0;
      appearance: none;
    }

    &:focus {
      background-color: transparent;
      outline: 0;
      box-shadow: none;
    }

    // The field is too narrow for the validation icon, which would sit on
    // top of the number; the box border alone carries the state.
    // `!important` because forms/_validation.scss forces the icon padding
    // with one.
    @each $state, $data in $form-validation-states {
      &.is-#{$state},
      .was-validated &:#{$state} {
        padding-inline-end: 0.25rem !important;
        background-image: none;
      }
    }
  }

  > .btn {
    // With a unit, or `calc()` in the button's `min-width` has nothing to add
    // stylelint-disable-next-line length-zero-no-unit
    --btn-border-width: 0px;
    --btn-bg: transparent;
    --btn-border-color: transparent;
    --btn-hover-border-color: transparent;
    --btn-active-border-color: transparent;
    --btn-hover-bg: var(--hover-bg);
    --btn-box-shadow: none;
    --focus-ring-offset: -2px;
    // A held button must not select text or open the context menu on touch.
    touch-action: manipulation;
    user-select: none;
    border-radius: 0;

    // An empty button paints the default icon through a CSS mask, so the
    // markup needs no svg; any content put inside replaces it.
    &[data-bs-number-input-action='decrement'],
    &[data-tblr-number-input-action='decrement'] {
      --number-input-icon: #{escape-svg($number-input-icon-decrement)};
    }

    &[data-bs-number-input-action='increment'],
    &[data-tblr-number-input-action='increment'] {
      --number-input-icon: #{escape-svg($number-input-icon-increment)};
    }

    &:not(:has(> *))::before {
      width: var(--btn-icon-size);
      height: var(--btn-icon-size);
      content: '';
      background-color: currentColor;
      @include mask-icon(var(--number-input-icon), $size: 100%);
    }

    &:first-child {
      @include border-start-radius(calc(var(--number-input-border-radius) - #{$input-border-width}));
    }

    &:last-child {
      @include border-end-radius(calc(var(--number-input-border-radius) - #{$input-border-width}));
    }
  }

  @each $state, $data in $form-validation-states {
    &:has(> .form-control.is-#{$state}),
    .was-validated &:has(> .form-control:#{$state}) {
      border-color: map.get($data, 'border-color');

      &:focus-within {
        outline-color: map.get($data, 'focus-ring-color');
      }

      // The box sits between the field and its feedback text, so the
      // `.is-invalid ~ .invalid-feedback` rule has to be repeated from here.
      ~ .#{$state}-feedback,
      ~ .#{$state}-tooltip {
        display: block;
      }
    }
  }
}

// Sizes move the same tokens `.form-control-sm` / `.btn-sm` and their `-lg`
// twins read, so the field and the buttons keep one height.
@each $size in (sm, lg) {
  .number-input-#{$size} {
    --number-input-input-width: #{map.get($number-input-input-widths, $size)};
    --number-input-border-radius: var(--btn-input-#{$size}-border-radius);

    > .form-control {
      --control-padding-y: var(--btn-input-#{$size}-padding-y);
      --control-font-size: var(--btn-input-#{$size}-font-size);
      --control-line-height: var(--btn-input-#{$size}-line-height);
    }

    > .btn {
      --btn-padding-y: var(--btn-input-#{$size}-padding-y);
      --btn-font-size: var(--btn-input-#{$size}-font-size);
      --btn-line-height: var(--btn-input-#{$size}-line-height);
      --btn-icon-size: #{map.get($number-input-icon-sizes, $size)};
    }
  }
}