/**
 * FormValidation (https://formvalidation.io)
 * The best validation library for JavaScript
 * (c) 2013 - 2020 Nguyen Huu Phuoc <me@phuoc.ng>
 */

import luhn from '../algorithms/luhn';
import { Localization, ValidateInput, ValidateOptions, ValidateResult } from '../core/Core';

export default function siren() {
    return {
        /**
         * Check if a string is a siren number
         */
        validate(input: ValidateInput<ValidateOptions, Localization>): ValidateResult {
            return {
                valid: (input.value === '') || (/^\d{9}$/.test(input.value) && luhn(input.value)),
            };
        },
    };
}