import axios from 'axios';
import { ApiOptions, AppOptions, PayDomain, ResStatus } from './interface';
import md5 from 'md5';

/**
 * 牛盾聚合支付
 * @link https://ndpay.qyyapp.com/
 */
export class Base {
  protected site = <{ domain: string; channel: number }>{
    domain: '', // 系统域名
    channel: 0,
  };

  protected xm = {
    baseUrl: PayDomain,
    appOptions: { mchNo: '', appId: '', secret: '' } as AppOptions,
    apiOptions: { version: '1.0', reqTime: 0, signType: 'MD5', sign: '' } as ApiOptions,
  };

  constructor(params:any) {
    const { appId, mchNo, secret }: AppOptions = params.appConf;
    this.site.domain = params.domain;

    axios.defaults.baseURL = this.xm.baseUrl;
    axios.defaults.headers['Content-Type'] = 'application/json';

    this.xm.appOptions.appId = appId;
    this.xm.appOptions.mchNo = mchNo;
    this.xm.appOptions.secret = secret;

    return this;
  }

  protected async apiPost(url: string, data: any) {
    Object.assign(data, this.xm.appOptions, this.xm.apiOptions);
    if (data.notifyUrl) {
      data.notifyUrl = this.site.domain + data.notifyUrl;
    }

    data.reqTime = new Date().getTime();

    // 过滤body为空的参数
    Object.keys(data).forEach(key => {
      if (data[key] === null || data[key] === '') {
        delete data[key];
      }
    });
    data.sign = this.sign(data);

    const res = (await axios.post(url, data)).data;
    if (res.code != ResStatus.success) {
      throw new Error(res.msg);
    }
    if (res.data?.errMsg) {
      throw new Error(res.data.errMsg);
    }
    return res;
  }

  // 签名
  protected sign(data: any) {
    if (!this.xm.appOptions.secret) throw new Error('聚合支付密钥不能为空！');
    delete data?.sign;
    const bodyStr =
      Object.keys(data)
        .sort()
        .map(key => `${key}=${data[key]}`)
        .join('&') +
      '&key=' +
      this.xm.appOptions.secret;

    return md5(bodyStr).toUpperCase();
  }

  // 回调通知
  protected notify({ sign, ...data }: any, success: () => void, fail: (msg: string) => void) {
    // 验证签名
    const check = sign === this.sign(data);
    if (sign && check) {
      // 在回调函数 success 中写 支付成功的逻辑
      success();
    } else {
      console.log('-----------appConf.data', data);
      console.log('-----------调签名验证', check);
      fail('签名验证未通过！');
    }
  }
}