mundipagg/magento2

/**
 * Copyright © 2013-2017 Magento, Inc. All rights reserved.
 * See COPYING.txt for license details.
 */
/*jshint browser:true jquery:true*/
/*global alert*/
define(
    [
        'mageUtils',
        'Magento_Payment/js/model/credit-card-validation/credit-card-number-validator/luhn10-validator',
        'MundiPagg_MundiPagg/js/model/credit-card-validation/credit-card-number-validator/credit-card-type'
    ],
    function (utils, luhn10, creditCardTypes) {

        /**
         * Validation result wrapper
         * @param {Object} card
         * @param {Boolean} isPotentiallyValid
         * @param {Boolean} isValid
         * @returns {Object}
         */
        function resultWrapper(card, isPotentiallyValid, isValid) {
            return {
                card: card,
                isValid: isValid,
                isPotentiallyValid: isPotentiallyValid
            };
        }

        return function (value) {
            var potentialTypes,
                cardType,
                valid,
                i,
                maxLength;

            if (utils.isEmpty(value)) {
                return resultWrapper(null, false, false);
            }

            value = value.replace(/\-|\s/g, '');

            if (!/^\d*$/.test(value)) {
                return resultWrapper(null, false, false);
            }

            potentialTypes = creditCardTypes.getCardTypes(value);


            if (potentialTypes.length === 0) {
                return resultWrapper(null, false, false);
            } else if (potentialTypes.length !== 1) {
                return resultWrapper(null, true, false);
            }

            cardType = potentialTypes[0];

            if (cardType.type === 'unionpay') {  // UnionPay is not Luhn 10 compliant
                valid = true;
            } else {
                valid = luhn10(value);
            }

            for (i = 0; i < cardType.lengths.length; i++) {
                if (cardType.lengths[i] === value.length) {
                    return resultWrapper(cardType, valid, valid);
                }
            }

            maxLength = Math.max.apply(null, cardType.lengths);

            if (value.length < maxLength) {
                return resultWrapper(cardType, true, false);
            }

            return resultWrapper(cardType, false, false);
        };
    }
);