@import "../variables";
@import "../mixins";

$switch-color: unquote("rgb(#{$color-primary})") !default;
$switch-text-color: unquote("rgb(#{$color-black})") !default;
$switch-thumb-off-color: unquote("rgb(#{$palette-grey-50})") !default;
$switch-track-on-color: unquote("rgba(#{$color-primary}, 0.5)") !default;
$switch-track-off-color: unquote("rgba(#{$color-black}, 0.26)") !default;
$switch-off-ripple-color: unquote("rgba(#{$color-black}, 0.4)") !default;
$switch-on-focus-color: unquote("rgba(#{$color-primary}, 0.26)") !default;
$switch-off-focus-color: unquote("rgba(#{$color-black}, 0.1)") !default;
$switch-disabled-thumb-color: unquote("rgb(#{$palette-grey-400})") !default;
$switch-disabled-track-color: unquote("rgba(#{$color-black}, 0.12)") !default;
$switch-disabled-text-color: unquote("rgba(#{$color-black}, 0.26)") !default;

$switch-total-height: 2.4 * $unit !default;
$switch-track-length: 3.6 * $unit !default;
$switch-track-height: 1.4 * $unit !default;
$switch-thumb-size: 2 * $unit !default;
$switch-thumb-on-color: $switch-color !default;
$switch-focus-init-size: .8 * $unit !default;
$switch-focus-size: $switch-total-height * 2 !default;
$switch-focus-diff: ($switch-focus-size - $switch-focus-init-size) / 2;

.field {
  position: relative;
  display: block;
  height: $switch-total-height;
  margin-bottom: 1.5 * $unit;
  white-space: nowrap;
  vertical-align: middle;
}

.text {
  display: inline-block;
  padding-left: $unit;
  font-size: 1.4 * $unit;
  line-height: $switch-total-height;
  color: $switch-text-color;
  white-space: nowrap;
  vertical-align: top;
}

%switch {
  position: relative;
  display: inline-block;
  width: $switch-track-length;
  height: $switch-track-height;
  margin-top: ($switch-total-height - $switch-track-height) / 2;
  vertical-align: top;
  cursor: pointer;
  border-radius: $switch-track-height;
}

.thumb {
  @include material-animation-default(.28s);
  position: absolute;
  top: ($switch-track-height - $switch-thumb-size) / 2;
  width: $switch-thumb-size;
  height: $switch-thumb-size;
  cursor: pointer;
  border-radius: 50%;
  transition-property: left;
}

.ripple {
  background-color: $switch-color;
  opacity: .3;
  transition-duration: 650ms;
}

.switch-on {
  @extend %switch;
  background: $switch-track-on-color;

  .thumb {
    @include shadow-3dp();
    left: $switch-track-length - $switch-thumb-size;
    background: $switch-thumb-on-color;
  }
}

.switch-off {
  @extend %switch;
  background: $switch-track-off-color;

  .thumb {
    @include shadow-2dp();
    left: 0;
    background: $switch-thumb-off-color;
  }

  .ripple {
    background: $switch-off-ripple-color;
  }
}

%thumb-focus {
  position: absolute;
  top: 50%;
  left: 50%;
  box-sizing: border-box;
  display: inline-block;
  width: $switch-focus-init-size;
  height: $switch-focus-init-size;
  content: "";
  background-color: transparent;
  border-radius: 50%;
  transform: translate(- $switch-focus-init-size / 2, - $switch-focus-init-size / 2);
}

.input {
  width: 0;
  height: 0;
  overflow: hidden;
  opacity: 0;

  &:focus:not(:active) {
    + .switch-on > .thumb:before {
      @extend %thumb-focus;
      background-color: $switch-on-focus-color;
      box-shadow: 0 0 0 $switch-focus-diff $switch-on-focus-color;
    }

    + .switch-off > .thumb:before {
      @extend %thumb-focus;
      background-color: $switch-off-focus-color;
      box-shadow: 0 0 0 $switch-focus-diff $switch-off-focus-color;
    }
  }
}

.disabled {
  @extend .field;

  .text {
    color: $switch-disabled-text-color;
  }

  .switch-on, .switch-off {
    cursor: auto;
    background: $switch-disabled-track-color;
  }

  .thumb {
    cursor: auto;
    background-color: $switch-disabled-thumb-color;
    border-color: transparent;
  }
}