//云开发实现支付
const cloud = require('wx-server-sdk')
cloud.init()

//1，引入支付的三方依赖
const tenpay = require('tenpay');
//2，配置支付信息
const config = {
  appid: '你的小程序appid', 
  mchid: '你的微信商户号',
  partnerKey: '微信支付安全密钥', 
  notify_url: '支付回调网址,这里可以先随意填一个网址', 
  spbill_create_ip: '127.0.0.1' //这里填这个就可以
};

exports.main = async(event, context) => {
  const wxContext = cloud.getWXContext()
  let {
    orderid,
    money
  } = event;
  //3，初始化支付
  const api = tenpay.init(config);

  let result = await api.getPayParams({
    out_trade_no: orderid,
    body: '商品简单描述',
    total_fee: money, //订单金额(分),
    openid: wxContext.OPENID //付款用户的openid
  });
  return result;
}

// pages/pay/pay.js
Page({
  //提交订单
  formSubmit: function(e) {
    let that = this;
    let formData = e.detail.value
    console.log('form发生了submit事件，携带数据为：', formData)
    wx.cloud.callFunction({
      name: "pay",
      data: {
        orderid: "" + formData.orderid,
        money: formData.money
      },
      success(res) {
        console.log("提交成功", res.result)
        that.pay(res.result)
      },
      fail(res) {
        console.log("提交失败", res)
      }
    })
  },

  //实现小程序支付
  pay(payData) {
    //官方标准的支付方法
    wx.requestPayment({
      timeStamp: payData.timeStamp,
      nonceStr: payData.nonceStr,
      package: payData.package, //统一下单接口返回的 prepay_id 格式如：prepay_id=***
      signType: 'MD5',
      paySign: payData.paySign, //签名
      success(res) {
        console.log("支付成功", res)
      },
      fail(res) {
        console.log("支付失败", res)
      },
      complete(res) {
        console.log("支付完成", res)
      }
    })
  }
})