@import '../core/style/elevation';
@import '../core/theming/palette';
@import '../core/theming/theming';
@import '../core/typography/typography-utils';


$mat-datepicker-selected-today-box-shadow-width: 1px;
$mat-datepicker-selected-fade-amount: 0.6;
$mat-datepicker-today-fade-amount: 0.2;
$mat-calendar-body-font-size: 13px !default;
$mat-calendar-weekday-table-font-size: 11px !default;

@mixin _mat-datepicker-color($palette) {
  .mat-calendar-body-selected {
    background-color: mat-color($palette);
    color: mat-color($palette, default-contrast);
  }

  .mat-calendar-body-disabled > .mat-calendar-body-selected {
    $background: mat-color($palette);

    @if (type-of($background) == color) {
      background-color: fade-out($background, $mat-datepicker-selected-fade-amount);
    }
    @else {
      // If we couldn't resolve to background to a color (e.g. it's a CSS variable),
      // fall back to fading the content out via `opacity`.
      opacity: $mat-datepicker-today-fade-amount;
    }
  }

  .mat-calendar-body-today.mat-calendar-body-selected {
    box-shadow: inset 0 0 0 $mat-datepicker-selected-today-box-shadow-width
                mat-color($palette, default-contrast);
  }
}

@mixin mat-datepicker-theme($theme) {
  $foreground: map-get($theme, foreground);
  $background: map-get($theme, background);

  .mat-calendar-arrow {
    border-top-color: mat-color($foreground, icon);
  }

  // The prev/next buttons need a bit more specificity to
  // avoid being overwritten by the .mat-icon-button.
  .mat-datepicker-toggle,
  .mat-datepicker-content .mat-calendar-next-button,
  .mat-datepicker-content .mat-calendar-previous-button {
    color: mat-color($foreground, icon);
  }

  .mat-calendar-table-header {
    color: mat-color($foreground, hint-text);
  }

  .mat-calendar-table-header-divider::after {
    background: mat-color($foreground, divider);
  }

  .mat-calendar-body-label {
    color: mat-color($foreground, secondary-text);
  }

  .mat-calendar-body-cell-content {
    color: mat-color($foreground, text);
    border-color: transparent;
  }

  .mat-calendar-body-disabled > .mat-calendar-body-cell-content:not(.mat-calendar-body-selected) {
    color: mat-color($foreground, disabled-text);
  }

  .mat-calendar-body-cell:not(.mat-calendar-body-disabled):hover,
  .cdk-keyboard-focused .mat-calendar-body-active,
  .cdk-program-focused .mat-calendar-body-active {
    & > .mat-calendar-body-cell-content:not(.mat-calendar-body-selected) {
      background-color: mat-color($background, hover);
    }
  }

  .mat-calendar-body-today:not(.mat-calendar-body-selected) {
    // Note: though it's not text, the border is a hint about the fact that this is today's date,
    // so we use the hint color.
    border-color: mat-color($foreground, hint-text);
  }

  .mat-calendar-body-disabled > .mat-calendar-body-today:not(.mat-calendar-body-selected) {
    $color: mat-color($foreground, hint-text);

    @if (type-of($color) == color) {
      border-color: fade-out($color, $mat-datepicker-today-fade-amount);
    }
    @else {
      // If the color didn't resolve to a color value, but something like a CSS variable, we can't
      // fade it out so we fall back to reducing the element opacity. Note that we don't use the
      // $mat-datepicker-today-fade-amount, because hint text usually has some opacity applied
      // to it already and we don't want them to stack on top of each other.
      opacity: 0.5;
    }
  }

  @include _mat-datepicker-color(map-get($theme, primary));

  .mat-datepicker-content {
    @include _mat-theme-elevation(4, $theme);
    background-color: mat-color($background, card);
    color: mat-color($foreground, text);

    &.mat-accent {
      @include _mat-datepicker-color(map-get($theme, accent));
    }

    &.mat-warn {
      @include _mat-datepicker-color(map-get($theme, warn));
    }
  }

  .mat-datepicker-content-touch {
    @include _mat-theme-elevation(0, $theme);
  }

  .mat-datepicker-toggle-active {
    color: mat-color(map-get($theme, primary), text);

    &.mat-accent {
      color: mat-color(map-get($theme, accent), text);
    }

    &.mat-warn {
      color: mat-color(map-get($theme, warn), text);
    }
  }
}

@mixin mat-datepicker-typography($config) {
  .mat-calendar {
    font-family: mat-font-family($config);
  }

  .mat-calendar-body {
    font-size: $mat-calendar-body-font-size;
  }

  .mat-calendar-body-label,
  .mat-calendar-period-button {
    font: {
      size: mat-font-size($config, button);
      weight: mat-font-weight($config, button);
    }
  }

  .mat-calendar-table-header th {
    font: {
      size: $mat-calendar-weekday-table-font-size;
      weight: mat-font-weight($config, body-1);
    }
  }
}