/*
 Copyright (C) 2024 3NSoft Inc.
 
 This program 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, either version 3 of the License, or (at your option) any later
 version.
 
 This program 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
 this program. If not, see <http://www.gnu.org/licenses/>.
*/

export function areAddressesEqual(a: string, b: string): boolean {
	const canonicalA = toCanonicalAddress(a);
	if (!canonicalA) { return false; }
	const canonicalB = toCanonicalAddress(b);
	if (!canonicalB) { return false; }
	return (canonicalA === canonicalB);
}

const whiteSpace = /\s/g;

export function toCanonicalAddress(address: string): string {
	const indOfAt = address.indexOf('@');
	let user: string;
	let domain: string;
	if (indOfAt < 0) {
		domain = address;
		user = '';
	} else {
		domain = address.substring(indOfAt+1);
		user = address.substring(0, indOfAt).replace(whiteSpace, '');
	}
	return (user+'@'+domain).toLowerCase();
}
