/**
 * 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';

const CREDIT_CARD_TYPES = {
    AMERICAN_EXPRESS: {
        length: [15],
        prefix: ['34', '37'],
    },
    DANKORT: {
        length: [16],
        prefix: ['5019'],
    },
    DINERS_CLUB: {
        length: [14],
        prefix: ['300', '301', '302', '303', '304', '305', '36'],
    },
    DINERS_CLUB_US: {
        length: [16],
        prefix: ['54', '55'],
    },
    DISCOVER: {
        length: [16],
        prefix: [
            '6011', '622126', '622127', '622128', '622129', '62213',
            '62214', '62215', '62216', '62217', '62218', '62219',
            '6222', '6223', '6224', '6225', '6226', '6227', '6228',
            '62290', '62291', '622920', '622921', '622922', '622923',
            '622924', '622925', '644', '645', '646', '647', '648',
            '649', '65',
        ],
    },
    ELO: {
        length: [16],
        prefix: [
            '4011', '4312', '4389', '4514', '4573', '4576',
            '5041', '5066', '5067', '509',
            '6277', '6362', '6363', '650', '6516', '6550',
        ],
    },
    FORBRUGSFORENINGEN: {
        length: [16],
        prefix: ['600722'],
    },
    JCB: {
        length: [16],
        prefix: ['3528', '3529', '353', '354', '355', '356', '357', '358'],
    },
    LASER: {
        length: [16, 17, 18, 19],
        prefix: ['6304', '6706', '6771', '6709'],
    },
    MAESTRO: {
        length: [12, 13, 14, 15, 16, 17, 18, 19],
        prefix: ['5018', '5020', '5038', '5868', '6304', '6759', '6761', '6762', '6763', '6764', '6765', '6766'],
    },
    MASTERCARD: {
        length: [16],
        prefix: ['51', '52', '53', '54', '55'],
    },
    SOLO: {
        length: [16, 18, 19],
        prefix: ['6334', '6767'],
    },
    UNIONPAY: {
        length: [16, 17, 18, 19],
        prefix: [
            '622126', '622127', '622128', '622129', '62213', '62214',
            '62215', '62216', '62217', '62218', '62219', '6222', '6223',
            '6224', '6225', '6226', '6227', '6228', '62290', '62291',
            '622920', '622921', '622922', '622923', '622924', '622925',
        ],
    },
    VISA: {
        length: [16],
        prefix: ['4'],
    },
    VISA_ELECTRON: {
        length: [16],
        prefix: ['4026', '417500', '4405', '4508', '4844', '4913', '4917'],
    },
};

export default function creditCard() {
    return {
        /**
         * Return true if the input value is valid credit card number
         */
        validate(input: ValidateInput<ValidateOptions, Localization>): ValidateResult {
            if (input.value === '') {
                return {
                    meta: {
                        type: null,
                    },
                    valid: true,
                };
            }

            // Accept only digits, dashes or spaces
            if (/[^0-9-\s]+/.test(input.value)) {
                return {
                    meta: {
                        type: null,
                    },
                    valid: false,
                };
            }

            const v = input.value.replace(/\D/g, '');
            if (!luhn(v)) {
                return {
                    meta: {
                        type: null,
                    },
                    valid: false,
                };
            }

            for (const tpe of Object.keys(CREDIT_CARD_TYPES)) {
                for (const i in CREDIT_CARD_TYPES[tpe].prefix) {
                    // Check the prefix and length
                    if (input.value.substr(0, CREDIT_CARD_TYPES[tpe].prefix[i].length) ===
                        CREDIT_CARD_TYPES[tpe].prefix[i] && CREDIT_CARD_TYPES[tpe].length.indexOf(v.length) !== -1
                    ) {
                        return {
                            meta: {
                                type: tpe,
                            },
                            valid: true,
                        };
                    }
                }
            }

            return {
                meta: {
                    type: null,
                },
                valid: false,
            };
        },
    };
}

export {
    CREDIT_CARD_TYPES,
};