'use strict';

/**
 * Express router of aliyun/
 */

const express = require('express');
const {default: common} = require('./common.js');

const {default: aliyunSmsClient} = require('./aliyunSmsClient');
const {default: defaultConfig, getCustomConfigs: getCustomConfigs} = require('./conf/config');

const router = express.Router();

let customConfig = null;

//发送注册验证码短信接口
/**
 * @phoneNumber: 手机号码
 * @codeNumber: 4位数字的验证码
 * @action: ['register', 'login']
 * @sign: 签名
 */
router.post('/sendverifycode', async (req, res) => {
    let phoneNumber = req.body.phoneNumber;
    let codeNumber = req.body.codeNumber;
    let action = req.body.action ? req.body.action : 'register';
    let sign = req.body.sign;

    let data = {code: 0, message: ''};

    if (!phoneNumber || !codeNumber || !sign) {
        data.message = '参数不能为空';
    }else if (common.isPhoneNumber(phoneNumber) == false) {
        data.message = '手机号码格式错误';
    }else if (common.isVerifyCode(codeNumber) == false) {
        data.message = '验证码格式错误，必须是4位数的数字';
    }else {
        //使用默认配置
        let myConfig = defaultConfig;

        //加载自定义配置
        if (!customConfig) {
            customConfig = await getCustomConfigs('./conf/custom_config.json');
        }

        //使用自定义配置
        myConfig = customConfig;

        let paramsCheck = {};
        for (const key in req.body) {
            if (key != 'sign') {
                paramsCheck[key] = req.body[key];
            }
        }

        let mySign = common.sign(paramsCheck, myConfig.secret);
        if (mySign.toLowerCase() != sign.toLowerCase()) {
            data.message = `签名 ${sign} 不匹配，请确保密钥正确及签名方法跟文档一致`;
        }
    }

    if (!data.message) {
        let signName = 'Ta荐',
            templateCode = action == 'register' ? 'SMS_465895580' : 'SMS_465915662',
            templateParam = `{"code":"${codeNumber}"}`;

        let sended = await aliyunSmsClient.send(myConfig, signName, templateCode, templateParam, phoneNumber);
        if (sended) {
            data.code = 1;
            data.message = '验证码发送成功';
        }else {
            data.message = '验证码发送失败，请稍后重试';
        }
    }
    
    return res.status(200).json(data);
});

exports.default = router;