rapid-ztx/credit/unbind.js

Rapid ZTX module

/**
 * Copyright (c) 2017 Lucky Byte, Inc.
 */
const debug = require('debug')('ztx');
const uuid = require('uuid');
const rapid_db = require('rapid-db');
const utils = require('../lib/utils');


/**
 * 解绑贷记卡
 *
 * 参数:
 *    info: 绑卡参数，包含下面的数据：
 *      * sumer: 用户 uuid
 *      * card_no: 贷记卡卡号，用于鉴别
 *
 * 返回:
 *    失败抛出异常
 */
const unbind = async (info) => {
    const keys = [
        'sumer', 'card_no'
    ];
    for (let i = 0; i < keys.length; i++) {
        const key = keys[i];
        if (!info[key]) {
            throw new Error(`解绑贷记卡错：参数缺少[${key}]`);
        }
    }

    // 查询用户信息
    const sumer = await unique_db.oneOrNone(`
        select * from rapid_ctod_sumers where uuid = $1
    `, [
        info.sumer
    ]);
    if (!sumer) {
        throw new Error('解绑贷记卡错：用户不存在');
    }

    // 如果贷记卡为空，则解绑失败
    if (!sumer.credit_cards) {
        throw new Error('解绑贷记卡错：用户未绑定贷记卡');
    }
    let card_idx = -1;
    
    for (let i = 0; i < sumer.credit_cards.length; i++) {
        const card = sumer.credit_cards[i];
        if (card.card_no == info.card_no) {
            card_idx = i;
            break;
        }
    }
    if (card_idx < 0) {
        throw new Error('解绑贷记卡错：卡号不匹配');
    }

    // 从贷记卡列表中删除指定的记录
    const unbind_cards = sumer.credit_cards.splice(card_idx, 1);

    // 更新用户贷记卡列表
    await unique_db.none(`
        update rapid_ctod_sumers set credit_cards = $1 where uuid = $2
    `, [
        JSON.stringify(sumer.credit_cards), sumer.uuid
    ]);

    // 记录解绑历史
    await unique_db.none(`
        insert into rapid_ctod_bhist (
            uuid, sumer, action, card, notes
        ) values (
            $1, $2, $3, $4, $5
        )
    `, [
        uuid.v4(), sumer.uuid, 4, unbind_cards[0], '解绑贷记卡'
    ]);

    // 给代理商联系人发送邮件通知
    try {
        const html = `
            <p>用户[${sumer.name}][${sumer.mobile}]解除贷记卡绑定！</p>
        `;
        await utils.mail_to_agent(sumer.agent, '用户解除绑卡通知', html);
    } catch (err) {
        await rapid_db.notify.warn(`发送解绑卡通知邮件错: ${err.message}`);
    }
}


module.exports = unbind;