@awsui/components-react/date-input/utils.js

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// Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
// SPDX-License-Identifier: Apache-2.0
import { getDaysInMonth } from 'date-fns';
import { displayToIso, parseDate } from '../internal/utils/date-time';
const yearMask = { min: 0, max: 9999, default: 2000, length: 4 };
const monthMask = { min: 1, max: 12, length: 2 };
const dayMask = { min: 1, max: getMaxDaysForDate, length: 2 };
function getMaxDaysForDate(value) {
    // Forcing to first day in month to ensure the correct month is used in case the date is incorrect.
    // For example, the date '2018-02-30' is parsed as '2018-03-02' (because there is only 28 days in February 2018).
    const baseDate = displayToIso(value).substring(0, 7);
    return getDaysInMonth(parseDate(baseDate));
}
export const generateMaskArgs = ({ granularity = 'day', 
/**
 * There are only two options, 'iso' and 'slashed' which is our current default format. If more formats are entered
 * we should take the formatting type rather than the boolean when we make an update.
 */
isIso = false, } = {}) => {
    return {
        separator: isIso ? '-' : '/',
        inputSeparators: isIso ? ['/', '.', ' '] : ['-', '.', ' '],
        segments: granularity === 'month' ? [yearMask, monthMask] : [yearMask, monthMask, dayMask],
    };
};
/**
 * Normalizes a partial ISO date string by trimming incomplete segments.
 *
 * @param dateString - The date string to normalize (e.g., "2012-", "2012-0", "2012-01-3").
 * @param granularity - The level of detail required ('month' or 'day').
 * @returns a properly formatted date string or empty string, if invalid.
 */
export function normalizeIsoDateString(dateString, granularity) {
    if (!dateString) {
        return '';
    }
    const match = dateString.match(/^(\d{4})(?:-(\d{1,2})?)?(?:-(\d{1,2})?)?$/);
    if (!match) {
        return '';
    }
    const [, year, month, day] = match;
    if (granularity === 'day' && (month === null || month === void 0 ? void 0 : month.length) === 2 && (day === null || day === void 0 ? void 0 : day.length) === 2) {
        return `${year}-${month}-${day}`;
    }
    if ((month === null || month === void 0 ? void 0 : month.length) === 2) {
        return `${year}-${month}`;
    }
    return year;
}
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