@import 'variables';
@import 'mixins/mixins';
@import 'icon';
@import 'popover';

$--picker-popup-margin-top: 7px;

.c-date-picker {
  display: inline-flex;
  align-items: center;
  box-sizing: border-box;

  width: $--date-picker-width;
  height: $--base-form-element-height;

  padding-right: $--date-picker-block-gap;
  padding-left: $--date-picker-padding--normal;

  font-size: $--base-font-size;
  border: 1px solid $--form-element-border-color;
  outline: none;
  cursor: pointer;

  &__input {
    flex: auto;
    align-self: stretch;
    width: 0;
    padding: 0;
    font-size: inherit;
    border: none;
    cursor: inherit;

    &:focus {
      border: none;
      outline: none;
      box-shadow: none;
    }
  }

  &__input::placeholder {
    color: $--disabled-text-color;
  }

  &:not(.c-date-picker--disabled):hover {
    border: 1px solid $--primary-color;
  }

  &--large {
    height: $--large-form-element-height;
    padding-left: $--date-picker-padding--large;
  }

  &--small {
    height: $--small-form-element-height;
    padding-left: $--date-picker-padding--small;
    font-size: $--small-font-size;
  }

  &--disabled {
    background-color: $--disabled-background-color;
    border: $--date-picker-border-disabled;
  }
  &----disabled:focus,
  &----disabled:hover,
  &----disabled:focus-within {
    outline: none;
  }

  &--disabled &__input {
    color: $--disabled-text-color;
    background-color: $--disabled-background-color;
  }

  &--disabled .c-icon--svg {
    color: $--disabled-text-color;
  }

  .c-icon--clear {
    cursor: pointer;
  }

  &--open,
  &--disabled {
    cursor: default;
  }

  &:focus-within,
  &:focus,
  &.c-date-picker--open {
    @include focus-ring;
    border: $--date-picker-border-active;
  }
}

.c-date-picker-range {
  width: $--date-picker-range-width;

  .c-date-picker__input {
    padding-left: 0;
    text-align: center;
  }
}

// popup
.c-date-picker-popup {
  margin-top: $--picker-popup-margin-top;
  font-size: $--base-font-size;
  background: $--base-background-color;
  border: $--date-picker-border;
  outline: none;
  box-shadow: 0 0 4px 0 rgba(40, 58, 92, 0.15);
  > div > div {
    outline: none;
  }

  // popup buttons
  button {
    padding: 0;
    font-size: inherit;
    line-height: 1;
    background: inherit;
    border: none;
    border-radius: $--base-border-radius;
    outline: none;
    cursor: pointer;
    appearance: none;
  }

  &__content {
    display: flex;
  }
}

// popup footer
.c-date-picker-popup__footer {
  padding: $--date-picker-footer-padding;
  border-top: $--date-picker-border-inside;

  button {
    padding: $--date-picker-footer-btn-padding;
    color: $--primary-color;

    &:only-child {
      display: block;
      margin: auto;
    }

    &:hover {
      font-weight: bolder;
    }
  }
}

// calendar header
.c-date-picker-calendar__header {
  display: flex;
  align-items: center;

  padding: $--date-picker-header-padding;
  border-bottom: $--date-picker-border-inside;

  > button {
    width: $--small-form-element-height;
    height: $--small-form-element-height;
    color: $--icon-color;

    &:hover {
      color: $--primary-color;
    }
  }

  > div {
    flex: 1;
    text-align: center;
  }

  > div button {
    padding: 2px;
  }

  // be used in type of "range"
  // transparent block for replacing buttons
  // happens when the range is between two consecutive months
  > span {
    width: $--small-form-element-height;
  }

  .c-icon--svg {
    color: inherit;
    font-size: 12px;
  }
}

// calendar -> days / weeks
.c-date-picker-calendar__days,
.c-date-picker-calendar__weeks {
  box-sizing: border-box;
  padding: $--date-picker-content-padding;
}

.c-date-picker-calendar__days__header,
.c-date-picker-calendar__weeks__header {
  display: flex;
  justify-content: space-between;

  margin-bottom: $--date-picker-row-gap;

  color: $--date-picker-weekbar-text-color;
  font-size: $--base-font-size - 2;

  span {
    width: $--date-picker-block-size;
    line-height: $--date-picker-block-size;

    text-align: center;
  }
}

.c-date-picker-calendar__days__body {
  [role='row'] {
    display: flex;

    &:not(:last-child) {
      margin-bottom: $--date-picker-row-gap;
    }
  }

  button {
    width: $--date-picker-block-size;
    height: $--date-picker-block-size;

    background-color: transparent;

    &:not(:last-child) {
      margin-right: $--date-picker-block-gap;
    }

    // custom focused outline style
    &:focus {
      outline: 0;
    }

    &:not(:disabled):not(.c-date-picker__day--dimmed):focus::after {
      position: absolute;
      top: 0;
      left: 0;
      z-index: 2;
      box-sizing: border-box;
      width: 100%;
      height: 100%;
      outline: 2px solid $--primary-color;
      content: '';
    }
  }

  // highlight
  .c-date-picker__day--highlight {
    background-color: $--date-picker-highlight-bg-color;
  }

  // filling gap background color among highlight or disabled area
  .c-date-picker__day--highlight:not(:first-child)::before,
  button:disabled:not(:first-child)::before,
  .c-date-picker__day--end:not(:first-child)::before {
    position: absolute;
    top: 0;
    left: -$--date-picker-block-gap;

    z-index: -1;
    width: $--date-picker-block-gap;
    height: 100%;
    background-color: inherit;

    content: '';
  }
  .c-date-picker__day--highlight.c-date-picker__day--selected::before {
    background-color: transparent;
  }
  .c-date-picker__day--highlight.c-date-picker__day--current:not(:first-child)::before,
  .c-date-picker__day--current:disabled:not(:first-child)::before {
    top: -1px;
    left: -11px;
    height: calc(100% + 2px);
  }
  .c-date-picker__day--highlight + .c-date-picker__day--selected::before,
  button:not(:disabled) + .c-date-picker__day--highlight:disabled::before {
    background-color: $--date-picker-highlight-bg-color;
  }
  button:not(:disabled)
    + .c-date-picker__day--highlight.c-date-picker__day--dimmed:disabled::before {
    background-color: $--base-background-color;
  }

  .c-date-picker__day--end:not(:first-child)::before {
    background-color: $--date-picker-highlight-bg-color;
  }

  .c-date-picker__day--dimmed + .c-date-picker__day--highlight::before,
  button:not(:disabled)
    + button:not(.c-date-picker__day--highlight):disabled::before {
    background-color: transparent;
  }
  .c-date-picker__day--dimmed {
    background-color: $--base-background-color;
  }
}

.c-date-picker-calendar__weeks__body,
.c-date-picker-calendar__quarters__body {
  [role='row']:not(:last-child) {
    margin-bottom: $--date-picker-row-gap;
  }

  .c-date-picker-week-row {
    display: flex;
    cursor: pointer;

    &:not(:disabled):hover {
      background-color: $--date-picker-highlight-bg-color;
    }
  }

  [aria-selected='true'] {
    color: unset;
    background-color: $--date-picker-highlight-bg-color;
    box-shadow: none;
  }
  [aria-selected='true'] span:first-child,
  [aria-selected='true'] span:last-child {
    color: #fff;
    background-color: #006bff;
  }

  span {
    width: $--date-picker-block-size;
    line-height: $--date-picker-block-size;

    &:not(:last-child) {
      margin-right: $--date-picker-block-gap;
    }
  }
}

.c-date-picker-calendar__months {
  .c-date-picker-month-row:disabled {
    background-color: $--disabled-background-color;
    border: none;
    cursor: default;
  }
  .c-date-picker-month-row:not(:disabled):hover {
    background-color: $--date-picker-highlight-bg-color;
  }

  [aria-selected='true'] {
    color: unset;
    background-color: $--date-picker-highlight-bg-color;
    box-shadow: none;
  }

  .c-date-picker-month-row:not(:disabled):hover button,
  [aria-selected='true'] button {
    color: #006bff;
    background-color: inherit;
  }

  .c-date-picker-month-row[aria-selected='true']
    button:not(:disabled):not(.c-date-picker__day--selected):not(.c-date-picker__month--selected):first-child,
  .c-date-picker-month-row[aria-selected='true']
    button:not(:disabled):not(.c-date-picker__day--selected):not(.c-date-picker__month--selected):last-child {
    color: #fff;
    background-color: #006bff;
  }
}

// calendar includes days / weeks / month / years
.c-date-picker-calendar {
  outline: none;
  button {
    position: relative;

    &:disabled {
      color: $--disabled-text-color;
      background-color: $--disabled-background-color;
      border: none;
      cursor: default;
    }

    &:not(:disabled):not(.c-date-picker__day--selected):not(.c-date-picker__year--selected):not(.c-date-picker__month--selected):hover {
      color: $--primary-color;
    }
  }

  .c-date-picker-calendar__header > button:disabled {
    background-color: $--base-background-color;
  }

  // today
  .c-date-picker__day--current,
  .c-date-picker__week--current,
  .c-date-picker__quarter--current,
  .c-date-picker__month--current,
  .c-date-picker__year--current {
    box-sizing: border-box;
    line-height: calc(2em - 2px);
    background-color: $--date-picker-highlight-bg-color;
    border: $--date-picker-border-active;
  }
  .c-date-picker__day--current:disabled,
  .c-date-picker__month--current:disabled,
  .c-date-picker__year--current:disabled,
  .c-date-picker__week--current:disabled,
  .c-date-picker__quarter--current:disabled {
    border: $--date-picker-border-active;
  }
  .c-date-picker__week--current .c-date-picker__day--current,
  .c-date-picker__quarter--current .c-date-picker__month--current {
    border: none;
    box-shadow: none;
  }

  // active, start, end
  .c-date-picker__year--selected,
  .c-date-picker__month--selected,
  .c-date-picker__day--selected {
    color: $--date-picker-text-color-active;
    background-color: $--date-picker-active-bg-color;
    box-shadow: none;
  }
}
.c-date-picker__year--active,
.c-date-picker__quarter--active,
.c-date-picker__month--active,
.c-date-picker__week--active,
.c-date-picker__day--active {
  @include focus-ring;
}

// dimmed
.c-date-picker__day--dimmed {
  color: $--date-picker-text-color-dimmed;
}

// month / year picker
.c-date-picker-calendar__months,
.c-date-picker-calendar__years {
  padding: $--date-picker-month-content-padding;

  [role='row'] {
    display: flex;
    justify-content: space-between;

    &:not(:last-child) {
      margin-bottom: $--date-picker-month-row-gap;
    }
  }

  button {
    width: $--base-font-size * 3 + 10;
    height: $--base-font-size * 2;

    white-space: nowrap;

    &:not(:last-child) {
      margin-right: $--date-picker-month-block-gap;
    }
  }
}
.c-date-picker-calendar__quarters__body {
  button {
    display: flex;
    width: auto;
  }
  span {
    width: $--base-font-size * 3 + 10;
    line-height: $--base-font-size * 2;

    &:not(:last-child) {
      margin-right: $--date-picker-month-block-gap;
    }
  }
}
// dimmed
.c-date-picker__year--dimmed {
  color: $--date-picker-text-color-dimmed;
}

// range
.c-date-picker-range__separator {
  color: $--tertiary-text-color;
}

.c-date-picker--disabled {
  pointer-events: none;

  .c-date-picker-range__separator {
    color: $--disabled-text-color;
  }
}

// highlight
.c-date-picker-popup {
  .c-date-picker__month--highlight:not([aria-selected='true']),
  .c-date-picker__week--highlight:not([aria-selected='true']),
  .c-date-picker__quarter--highlight:not([aria-selected='true']),
  .c-date-picker__year--highlight:not([aria-selected='true']) {
    background-color: $--date-picker-highlight-bg-color;
  }
}