import cloud from '@lafjs/cloud'
const token = "nika123";
const EncodingAESKey = "XcdOFaZOQjmyBqYHxWAITtrmq11YaZQ63DeEZAAgYJt";
const mchid = "1719895437";//商户id
const serialNo = "2A97ED6ED441E55600EBC8830B9EC889ED41496E";//证书序列号
const appid = "wx30f74367b3d3e7a6";
import crypto from 'crypto';
const db = cloud.database();
export default async function (ctx: FunctionContext) {
  console.log(ctx.body);
  //console.log(ctx.query);;
  try {
    let openid = ctx.body.FromUserName;
    //console.log(openid);
    const data = JSON.parse(ctx.body.SessionFrom);
    //console.log(data);
    console.log(data);
    if (data.tpye == "ios") {
      await PostMsg(openid, "点击下方页面进行充值");
      await PostImg(openid, data.outTradeNo, data.propName, data.count, data.price);
    }
  } catch (e) {
    console.error("ios客服充值参数错误：" + ctx.body.SessionFrom);
    console.log(ctx.body);
  }
  //return ctx.query.echostr; 
  return { data: "scuess" };
}
/**获取订单*/
async function getOrder(openid, toatal, outTradeNo, timestamp, nonceStr) {
  const url = "https://api.mch.weixin.qq.com/v3/pay/transactions/jsapi";
  // 生成随机字符串和时间戳
  const body = {
    "appid": appid,
    "mchid": mchid,
    "description": "消消王者道具购买",
    "out_trade_no": outTradeNo,
    "notify_url": "https://q6rvwvtnga.sealoshzh.site/wx/iosPayCall",
    "amount": { "total": Number(toatal), "currency": "CNY" },
    "payer": { "openid": openid }
  }
  let ret = await sign(nonceStr, timestamp, body);
  const res = await fetch(url, {
    method: 'POST',
    headers: {
      'Authorization': ret,
      'Accept': 'application/json',
      'Content-Type': 'application/json',
    },
    body: JSON.stringify(body)
  })
  if (res.ok) {
    const data = await res.json().catch(async () => {
      //如果不是JSON，尝试读取文本
      return await res.text().catch(() => 'Empty response');
    });
    return data.prepay_id;
  }
  return null;
}
async function sign(nonceStr, timestamp, body) {
  const data = `POST\n/v3/pay/transactions/jsapi\n${timestamp}\n${nonceStr}\n${JSON.stringify(body)}\n`;
  // 创建签名对象
  const sign = crypto.createSign('RSA-SHA256');
  // 更新签名内容
  sign.update(data);
  // 获取存储桶
  const bucket = cloud.storage.bucket('j3k323ol-colorblock-oss');
  // 获取文件列表
  const res = await bucket.readFile('apiclient_key.pem');
  const privateKeyPem = await res.Body.transformToString();
  // 使用私钥签名（PKCS1 填充）
  const signature = sign.sign({
    key: privateKeyPem,
    padding: crypto.constants.RSA_PKCS1_PADDING
  }, 'base64');
  // 构建Authorization头
  const authorization = `WECHATPAY2-SHA256-RSA2048 mchid="${mchid}",nonce_str="${nonceStr}",signature="${signature}",timestamp="${timestamp}",serial_no="${serialNo}"`;
  return authorization;
}
/**前端签名*/
async function frontsign(data) {
  // 创建签名对象
  const sign = crypto.createSign('RSA-SHA256');
  // 更新签名内容
  sign.update(data);
  // 获取存储桶
  const bucket = cloud.storage.bucket('j3k323ol-colorblock-oss');
  // 获取文件列表
  const res = await bucket.readFile('apiclient_key.pem');
  const privateKeyPem = await res.Body.transformToString();
  //console.error(privateKeyPem);
  // 使用私钥签名（PKCS1 填充）
  const signature = sign.sign({
    key: privateKeyPem,
    padding: crypto.constants.RSA_PKCS1_PADDING
  }, 'base64');
  // 构建Authorization头
  return signature
}
const propName = {
  gold_1: "金币包1",
  gold_2: "金币包2",
  gold_3: "金币包3",
  gold_4: "金币包4",
  gold_5: "金币包5",
  gold_6: "金币包6",
  unlimited_health_bundle_1: "无限体力组合包1",
  unlimited_health_bundle_2: "无限体力组合包2",
  unlimited_health_bundle_3: "无限体力组合包3",
  freeze_in_game: "局内购买冻结",
  hammer_in_game: "局内购买锤子",
  wand_in_gamerefill: "局内购买魔棒",
  health: "补满体力"
};

async function PostMsg(OpenId, msg) {
  let token = cloud.shared.get('wxaccess_token');
  if (!token) {
    return { code: 0, data: null, msg: "token获取失败" };
  }
  const url = `https://api.weixin.qq.com/cgi-bin/message/custom/send?access_token=${token}`;
  const data = {
    "touser": OpenId,
    "msgtype": "text",
    "text":
    {
      "content": msg
    }
  }

  const res = await fetch(url, {
    method: 'POST',
    headers: {
      'Content-Type': 'application/json;charset=utf-8'
    },
    body: JSON.stringify(data)
  })
  return "ok"
}
async function PostImg(OpenId, outTradeNo, name, count, price) {
  let token = cloud.shared.get('wxaccess_token');
  if (!token) {
    return { code: 0, data: null, msg: "token获取失败" };
  }
  const url = `https://api.weixin.qq.com/cgi-bin/message/custom/send?access_token=${token}`;
  const nonceStr = crypto.randomBytes(16).toString('hex');
  const timestamp = Math.floor(Date.now() / 1000).toString();
  const total = count * price;
  let prepay_id = await getOrder(OpenId, total, outTradeNo, timestamp, nonceStr);
  let frontBody = {
    "appId": appid,     //公众号ID，由商户传入     
    "timeStamp": timestamp,     //时间戳，自1970年以来的秒数     
    "nonceStr": nonceStr,      //随机串     
    "package": "prepay_id=" + prepay_id
  }
  const data1 = `${frontBody.appId}\n${frontBody.timeStamp}\n${frontBody.nonceStr}\n${frontBody.package}\n`;
  let paySign = await frontsign(data1);

  let user = await db.collection("users").where({ openid: OpenId }).update({ iosTime: frontBody.timeStamp });
  let param = {
    name: propName[name],
    openid: OpenId,
    outTradeNo: outTradeNo,
    time: timestamp,
    quantity: count,
    price: price,
    body: {
      "appId": frontBody.appId,     //公众号ID，由商户传入     
      "timeStamp": frontBody.timeStamp,     //时间戳，自1970年以来的秒数     
      "nonceStr": frontBody.nonceStr,      //随机串     
      "package": frontBody.package,
      "signType": "RSA",     //微信签名方式：     
      "paySign": paySign //微信签名 
    }
  }
  await db.collection("iosOrder").add({
    openid: OpenId,
    outTradeNo: outTradeNo,
    itemid: name,
    itemCount: count,
    goodsPrice: Number(price),
    time: Date.now(),
    orderTime: new Date(Date.now() + 8 * 3600000),
    chargeTime: 0,
    getTime: 0,
    type: "ios",
    state: 0,
  });
  const data = {
    "touser": OpenId,
    "msgtype": "link",
    "link": {
      "title": "点我支付",
      "description": "金额:" + (total / 100).toFixed(2) + "元",
      "url": `https://pay.nika4games.com/order3.html#data=${encodeURIComponent(JSON.stringify(param))}`,
      "thumb_url": "https://static-host-j3k323ol-colorblock-oss.sealoshzh.site/icon.jpg"
    }
  }
  //console.log(data);
  const res = await fetch(url, {
    method: 'POST',
    headers: {
      'Content-Type': 'application/json;charset=utf-8'
    },
    body: JSON.stringify(data)
  })
  const data11 = await res.json();
  console.log(data11);
  if (data11.errcode == 40001) {
    console.error("未获取到正确token,重新发送请求");
    let res = await getWxToken();
    await PostMsg(OpenId, "点击下方页面进行充值");
    await PostImg(OpenId, outTradeNo, name, count, price);
  }
  return "ok"
}


/**获取微信Token*/
async function getWxToken() {
  const api_url = `https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=${appid}&secret=${appsecret}`;
  const ret = await cloud.fetch({
    url: api_url,
    method: "get",
  });
  if (ret?.data?.access_token) {
    cloud.shared.set('wxaccess_token', ret.data.access_token);
    return ret.data.access_token;
  } else {
    //access_token = nul l;
    return null;
  }
}