'use strict';

const Core = require('@alicloud/pop-core');
const _ = require('lodash');

// 阿里云控制台 - 短信服务 - 国内消息
const SignName = '惠金信用信息服务';
const TemplateCode = 'SMS_189617598';

// https://usercenter.console.aliyun.com/
const accessKeyId = 'LTAI4G1eNRqKqqRLP15d3x5h';
const accessKeySecret = 'CJtcZjAu366mmmscIRXfyml9Hx61Bh';

const client = new Core({
  accessKeyId,
  accessKeySecret,
  endpoint: 'https://dysmsapi.aliyuncs.com',
  apiVersion: '2017-05-25',
});

// 保存手机号和验证码的对应关系
// phone_code_list = {'18855551234':['1024']}
// const phone_code_list = {};

/**
 * sms.send(手机号) 发送短信验证码
 **/
exports.send = function(phone) {
  // 生成验证码
  // const code = '' + _.random(9) + _.random(9) + _.random(9) + _.random(9);
  const code = this.randomCode(4);
  return new Promise((resolve, reject) => {
    try {
      client.request('SendSms', {
        RegionId: 'cn-hangzhou',
        PhoneNumbers: phone,
        SignName,
        TemplateCode,
        TemplateParam: '{code:' + code + '}',
      }, {
        method: 'POST',
      }).then(result => {
        console.log('res', result)
        if (result.Message && result.Message == 'OK' && result.Code && result.Code == 'OK') { // 短信发送成功
          // 保存验证码
          result.number = code;
          resolve(result);
        } else {
          console.log('error', result)
          reject(result);
        }
      }, ex => {
        console.log('ex', ex)
        reject(ex);
      });
    } catch (error) {
      console.log('catch  error', error)

      reject(error);
    }
  });
};

exports.randomCode = function(length) {
  const chars = [ '0', '1', '2', '3', '4', '5', '6', '7', '8', '9' ];
  let result = '';
  for (let i = 0; i < length; i++) {
    const index = Math.ceil(Math.random() * 9);
    result += chars[index];
  }
  return result;
}