import cloud from '@lafjs/cloud'
import * as crypto from 'crypto';
const db = cloud.database();
export default async function (ctx: FunctionContext) {
  let uid = ctx.body.uid;
  let itemid = ctx.body.itemid;
  let itemCount = ctx.body.itemCount;
  let itemPrice = ctx.body.itemPrice;
  let user = await db.collection("users").where({ _id: uid }).getOne();
  if (user.data == null) {
    return { code: 0, data: null, msg: "未获取到玩家数据" };
  }
  const outTradeNo = `wcx_` + Math.round(Math.random() * 10 ** 13) + Date.now();
  let signData = JSON.stringify({
    "mode": "goods",
    "offerId": "1450390549",
    "buyQuantity": Number(itemCount),//购买数量 
    "env": 0,//正式环境
    "currencyType": "CNY",//人民币
    "platform": "android",
    "zoneId": "1",//分区id
    "productId": itemid,
    "goodsPrice": Number(itemPrice),
    "outTradeNo": outTradeNo,
    "attach": "购买道具"
  });
  let session_key = user.data.session_key;
  const signature = hmacSha256(session_key, signData);
  let key = "4HfZwqLjVkLb6s4TfIxRGKaTxgvvL1rl";
  let data = 'requestMidasPaymentGameItem' + '&' + signData;
  const paySig = hmacSha256(key, data);
  await db.collection("order").add({
    openid: user.data.openid,
    outTradeNo: outTradeNo,
    itemid: itemid,
    itemCount: itemCount,
    goodsPrice: Number(itemPrice),
    time: Date.now(),
    type:"and",
    state: 0,
  });
  // console.log("申请订单");
  // console.log(outTradeNo);
  // 计算哈希值并转换为十六进制字符串
  return { code: 1, data: { paySig: paySig, signature: signature, signData: signData, outTradeNo: outTradeNo }, msg: "成功" }
}
function hmacSha256(sessionKey, signData) {
  const hmac = crypto.createHmac('sha256', sessionKey);
  hmac.update(signData);
  return hmac.digest('hex');
}