// Helper Functions

/// Replace `$search` with `$replace` in `$string`
/// @author Hugo Giraudel
/// @param {String} $string - Initial string
/// @param {String} $search - Substring to replace
/// @param {String} $replace ('') - New value
/// @return {String} - Updated string
@function lightpick-str-replace($string, $search, $replace: '') {
    $index: str-index($string, $search);

    @if $index {
        @return str-slice($string, 1, $index - 1) + $replace + lightpick-str-replace(str-slice($string, $index + str-length($search)), $search, $replace);
    }

    @return $string;
}

/// Split `$string` between the `$separator` characters
/// @author https://stackoverflow.com/a/42295154/108816
/// @param {String} $string - Initial string
/// @param {String} $separator - Substring to split on
/// @return {List} - Split string
@function lightpick-str-split($string, $separator) {
    $split-arr: ();
    $index: str-index($string, $separator);

    @while $index != null {
        $item: str-slice($string, 1, $index - 1);

        $split-arr: append($split-arr, $item);

        $string: str-slice($string, $index + 1);

        $index: str-index($string, $separator);
    }

    $split-arr: append($split-arr, $string);

    @return $split-arr;
}

// SCSS Variables

$lightpick-font: system-ui, Roboto, Helvetica, Arial, sans-serif !default;
$lightpick-line-height: 1.125em !default;
$lightpick-border-radius: 4px !default;
$lightpick-padding: 4px !default;
$lightpick-color: #000 !default;
$lightpick-background-color: #fff !default;
$lightpick-months-background-color: #eee !default;
$lightpick-title-font-size: 16px !default;
$lightpick-title-font-weight: normal !default;
$lightpick-day-of-week-font-size: 11px !default;
$lightpick-day-of-week-font-weight: bold !default;
$lightpick-day-hover-color: #e0e0e0 !default;
$lightpick-day-hover-background-image-color: lightpick-str-replace(quote(#{$lightpick-day-hover-color}), '#', '%23');
$lightpick-day-hover-background-image: url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 32 32'%3E%3Ccircle fill='#{$lightpick-day-hover-background-image-color}' cx='16' cy='16' r='16'/%3E%3C/svg%3E") !default;
$lightpick-day-disabled-opacity: 0.38 !default;
$lightpick-day-previous-next-opacity: $lightpick-day-disabled-opacity !default;
$lightpick-day-size: 40px !default;
$lightpick-day-font-size: 13px !default;
$lightpick-selected-date-color: #fff !default;
$lightpick-selected-date-background-color: #268bd2 !default;
$lightpick-selected-date-background-image-color: lightpick-str-replace(quote(#{$lightpick-selected-date-background-color}), '#', '%23');
$lightpick-selected-date-background-image: url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 32 32'%3E%3Ccircle fill='#{$lightpick-selected-date-background-image-color}' cx='16' cy='16' r='16'/%3E%3C/svg%3E") !default;
$lightpick-selected-date-font-weight: bold !default;
$lightpick-selected-range-background-color: rgba($lightpick-selected-date-background-color, 0.1) !default;
$lightpick-selected-range-hover-background-image: url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 32 32'%3E%3Ccircle fill='#{rgba($lightpick-selected-date-background-color, 0.5)}' cx='16' cy='16' r='16'/%3E%3C/svg%3E") !default;
$lightpick-today-color: #dc322f !default;
$lightpick-today-background-image: url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 32 32'%3E%3Ccircle fill='#{rgba($lightpick-today-color, .5)}' cx='16' cy='16' r='16'/%3E%3C/svg%3E") !default;
$lightpick-tooltip-background-color: #fff !default;
$lightpick-tooltip-padding: 4px 8px !default;
$lightpick-tooltip-margin: -(unquote(nth(lightpick-str-split(quote(#{$lightpick-tooltip-padding}), ' '), 1))) !default;
$lightpick-tooltip-triangle-size: 4px !default;
$lightpick-tooltip-border-color: rgba(0, 0, 0, 0.12) !default;
$lightpick-tooltip-font-size: 11px !default;
$lightpick-box-shadow: 0 1px 3px rgba(0, 0, 0, 0.25) !default;
$lightpick-dropdown-font-size: 1em !default;
$lightpick-dropdown-font-weight: bold !default;
$lightpick-dropdown-disabled-color: #333 !default;
$lightpick-action-width: 32px !default;
$lightpick-action-height: $lightpick-action-width !default;
$lightpick-action-background-color: #ddd !default;
$lightpick-action-reset-background-color: #aeacad !default;
$lightpick-action-reset-color: #fff !default;
$lightpick-action-apply-background-color: #2495f3 !default;
$lightpick-action-apply-color: #fff !default;
$lightpick-action-border-radius: 5px !default;
$lightpick-action-font-size: 12px !default;
$lightpick-action-close-font-size: 18px !default;

// Styles

.lightpick {
    position: absolute;
    z-index: 99999;
    padding: $lightpick-padding;
    border-radius: $lightpick-border-radius;
    background-color: $lightpick-background-color;
    box-shadow: $lightpick-box-shadow;
    color: $lightpick-color;
    font-family: $lightpick-font;
    line-height: $lightpick-line-height;

    &--inlined {
        position: relative;
        display: inline-block;
    }

    &,
    & *,
    &::after,
    &::before {
        box-sizing: border-box;
    }

    &.is-hidden {
        display: none;
    }

    &__months {
        display: grid;
        background-color: $lightpick-months-background-color;
        grid-template-columns: auto;
        grid-gap: 1px;

        @at-root .lightpick--2-columns #{&} {
            grid-template-columns: auto auto;
        }

        @at-root .lightpick--3-columns #{&} {
            grid-template-columns: auto auto auto;
        }

        @at-root .lightpick--4-columns #{&} {
            grid-template-columns: auto auto auto auto;
        }

        @at-root .lightpick--5-columns #{&} {
            grid-template-columns: auto auto auto auto auto;
        }
    }

    &__month {
        padding: $lightpick-padding;
        width: ($lightpick-day-size * 7) + ($lightpick-padding * 2);
        background-color: $lightpick-background-color;

        &-title-bar {
            display: flex;
            margin-bottom: $lightpick-padding;
            justify-content: space-between;
            align-items: center;
        }

        &-title {
            margin-top: $lightpick-padding;
            margin-bottom: $lightpick-padding;
            margin-left: $lightpick-padding;
            font-size: $lightpick-title-font-size;
            font-weight: $lightpick-title-font-weight;
            line-height: $lightpick-title-font-size * 1.5;
            cursor: default;
            padding: 0 $lightpick-padding;
            border-radius: $lightpick-border-radius;

            & > .lightpick__select {
                border: none;
                background-color: transparent;
                outline: none;
                -moz-appearance: none;
                -webkit-appearance: none;
                appearance: none;

                &:disabled {
                    color: $lightpick-dropdown-disabled-color;
                }
            }

            & > .lightpick__select-months {
                font-weight: $lightpick-dropdown-font-weight;
                font-size: $lightpick-dropdown-font-size;
                margin-right: 0.5em;
            }
        }
    }

    &__toolbar {
        display: flex;
        text-align: right;
        justify-content: flex-end;
    }

    &__previous-action,
    &__next-action,
    &__close-action {
        display: flex;
        margin-left: 6px;
        width: $lightpick-action-width;
        height: $lightpick-action-height;
        outline: none;
        border: none;
        border-radius: 50%;
        background-color: $lightpick-action-background-color;
        justify-content: center;
        align-items: center;

        &:active {
            color: inherit;
        }
    }

    &__previous-action,
    &__next-action {
        font-size: $lightpick-action-font-size;
    }

    &__close-action {
        font-size: $lightpick-action-close-font-size;
    }

    &__days-of-the-week {
        display: grid;
        grid-template-columns: repeat(7, 1fr);
    }

    &__day-of-the-week {
        display: flex;
        font-size: $lightpick-day-of-week-font-size;
        font-weight: $lightpick-day-of-week-font-weight;
        justify-content: center;
        align-items: center;
    }

    &__days {
        display: grid;
        grid-template-columns: repeat(7, 1fr);
    }

    &__day {
        display: flex;
        height: $lightpick-day-size;
        background-position: center center;
        background-size: contain;
        background-repeat: no-repeat;
        font-size: $lightpick-day-font-size;
        justify-content: center;
        align-items: center;
        cursor: default;

        &.is-today {
            background-image: $lightpick-today-background-image;
            background-size: 18.8% auto;
            background-position: center bottom;
            color: $lightpick-today-color;
        }

        &:not(.is-disabled):hover {
            background-size: contain;
            background-image: $lightpick-day-hover-background-image;
        }

        &.is-disabled {
            opacity: $lightpick-day-disabled-opacity;
            pointer-events: none;

            &.is-forward-selected {
                opacity: 1;

                &:not(.is-start-date) {
                    background-color: $lightpick-selected-range-background-color;
                    background-image: none;
                }
            }
        }

        &.disabled-tooltip {
            pointer-events: auto;
        }

        &.is-previous-month,
        &.is-next-month {
            opacity: $lightpick-day-previous-next-opacity;
        }

        &#{&}.is-in-range:not(.is-disabled) {
            opacity: 1;
        }

        &.is-in-range {
            border-radius: 0;
            background-color: $lightpick-selected-range-background-color;
            background-image: none;

            &:hover {
                background-image: url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 32 32'%3E%3Ccircle fill='rgba(38, 139, 210, 0.5)' cx='16' cy='16' r='16'/%3E%3C/svg%3E");
            }
        }

        &.is-start-date.is-in-range,
        &.is-end-date.is-in-range.is-flipped {
            border-top-left-radius: 50%;
            border-top-right-radius: 0;
            border-bottom-right-radius: 0;
            border-bottom-left-radius: 50%;
            background-color: $lightpick-selected-date-background-color;
            background-image: none;
        }

        &.is-end-date.is-in-range,
        &.is-start-date.is-in-range.is-flipped {
            border-top-left-radius: 0;
            border-top-right-radius: 50%;
            border-bottom-right-radius: 50%;
            border-bottom-left-radius: 0;
            background-color: $lightpick-selected-date-background-color;
            background-image: none;
        }

        &.is-start-date.is-end-date {
            background-color: transparent;
            background-image: $lightpick-selected-date-background-image;
        }

        &.is-start-date,
        &.is-end-date,
        &.is-start-date:hover,
        &.is-end-date:hover {
            background-image: $lightpick-selected-date-background-image;
            background-size: auto;
            background-position: center;
            color: $lightpick-selected-date-color;
            font-weight: $lightpick-selected-date-font-weight;
        }
    }

    &__tooltip {
        position: absolute;
        margin-top: $lightpick-tooltip-margin;
        padding: $lightpick-tooltip-padding;
        border-radius: $lightpick-border-radius;
        background-color: $lightpick-tooltip-background-color;
        box-shadow: $lightpick-box-shadow;
        white-space: nowrap;
        font-size: $lightpick-tooltip-font-size;
        pointer-events: none;

        &::before {
            position: absolute;
            bottom: -($lightpick-tooltip-triangle-size + 1);
            left: calc(50% - #{$lightpick-tooltip-triangle-size + 1});
            border-top: ($lightpick-tooltip-triangle-size + 1) solid $lightpick-tooltip-border-color;
            border-right: ($lightpick-tooltip-triangle-size + 1) solid transparent;
            border-left: ($lightpick-tooltip-triangle-size + 1) solid transparent;
            content: '';
        }

        &::after {
            position: absolute;
            bottom: -$lightpick-tooltip-triangle-size;
            left: calc(50% - #{$lightpick-tooltip-triangle-size});
            border-top: $lightpick-tooltip-triangle-size solid $lightpick-tooltip-background-color;
            border-right: $lightpick-tooltip-triangle-size solid transparent;
            border-left: $lightpick-tooltip-triangle-size solid transparent;
            content: '';
        }
    }

    &__footer {
        display: flex;
        justify-content: space-between;
    }

    &__reset-action,
    &__apply-action {
        border-radius: $lightpick-action-border-radius;
        font-size: $lightpick-action-font-size;
        border: none;
    }

    &__reset-action {
        color: $lightpick-action-reset-color;
        background-color: $lightpick-action-reset-background-color;
    }

    &__apply-action {
        color: $lightpick-action-apply-color;
        background-color: $lightpick-action-apply-background-color;
    }
}