45 lines
1.6 KiB
JavaScript
45 lines
1.6 KiB
JavaScript
|
import isWeekend from '../isWeekend/index.js';
|
||
|
|
import toDate from '../toDate/index.js';
|
||
|
|
import toInteger from '../_lib/toInteger/index.js';
|
||
|
|
/**
|
||
|
|
* @name addBusinessDays
|
||
|
|
* @category Day Helpers
|
||
|
|
* @summary Add the specified number of business days (mon - fri) to the given date.
|
||
|
|
*
|
||
|
|
* @description
|
||
|
|
* Add the specified number of business days (mon - fri) to the given date, ignoring weekends.
|
||
|
|
*
|
||
|
|
* @param {Date|Number} date - the date to be changed
|
||
|
|
* @param {Number} amount - the amount of business days to be added
|
||
|
|
* @returns {Date} the new date with the business days added
|
||
|
|
* @throws {TypeError} 2 arguments required
|
||
|
|
*
|
||
|
|
* @example
|
||
|
|
* // Add 10 business days to 1 September 2014:
|
||
|
|
* var result = addBusinessDays(new Date(2014, 8, 1), 10)
|
||
|
|
* //=> Mon Sep 15 2014 00:00:00 (skipped weekend days)
|
||
|
|
*/
|
||
|
|
|
||
|
|
export default function addBusinessDays(dirtyDate, dirtyAmount) {
|
||
|
|
if (arguments.length < 2) {
|
||
|
|
throw new TypeError('2 arguments required, but only ' + arguments.length + ' present');
|
||
|
|
}
|
||
|
|
|
||
|
|
var date = toDate(dirtyDate);
|
||
|
|
var amount = toInteger(dirtyAmount);
|
||
|
|
if (isNaN(amount)) return new Date(NaN);
|
||
|
|
var hours = date.getHours();
|
||
|
|
var sign = amount < 0 ? -1 : 1;
|
||
|
|
date.setDate(date.getDate() + toInteger(amount / 5) * 7);
|
||
|
|
amount %= 5; // to get remaining days not part of a full week
|
||
|
|
|
||
|
|
var shiftSize = Math.abs(amount); // only loops over remaining days or if day is a weekend, ensures a business day is returned
|
||
|
|
|
||
|
|
while (shiftSize > 0 || isWeekend(date)) {
|
||
|
|
if (!isWeekend(date)) shiftSize -= 1;
|
||
|
|
date.setDate(date.getDate() + sign);
|
||
|
|
}
|
||
|
|
|
||
|
|
date.setHours(hours);
|
||
|
|
return date;
|
||
|
|
}
|