gsender

/*
 * Copyright (C) 2021 Sienci Labs Inc.
 *
 * This file is part of gSender.
 *
 * gSender is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, under version 3 of the License.
 *
 * gSender is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with gSender.  If not, see <https://www.gnu.org/licenses/>.
 *
 * Contact for information regarding this program and its license
 * can be sent through gSender@sienci.com or mailed to the main office
 * of Sienci Labs Inc. in Waterloo, Ontario, Canada.
 *
 */

export const getPagingRange = ({
	page = 1,
	pageLength = 10,
	totalRecords = 0,
}) => {
	page = Number(page);
	pageLength = Number(pageLength);

	if (!page || page < 1) {
		page = 1;
	}
	if (!pageLength || pageLength < 1) {
		pageLength = 10;
	}
	if ((page - 1) * pageLength >= totalRecords) {
		page = Math.ceil(totalRecords / pageLength);
	}

	const begin = (page - 1) * pageLength;
	const end = Math.min((page - 1) * pageLength + pageLength, totalRecords);

	return [begin, end];
};