package service

import (
	"encoding/json"
	"errors"
	"fmt"
	"io"
	"net/http"
	"strconv"
	"strings"
	"time"
	"yuleduiPay/common"
	"yuleduiPay/repo"
	"yuleduiPay/service/po"
	"yuleduiPay/service/vo"

	"context"

	"math/rand"

	"github.com/gogf/gf/os/gctx"
	"github.com/gogf/gf/v2/frame/g"
	"github.com/gogf/gf/v2/os/gtime"
	"github.com/gogf/gf/v2/util/guid"
)

type Pay struct {
	payOrderRepo repo.PayOrder
	shopRepo     repo.Shop
	userRepo     repo.User
}

// 微信和支付宝小程序，扫码支付
func (t *Pay) GetReduction(ctx context.Context, req *vo.GetReductionReq) (resp *vo.GetReductionResp, err error) {
	resp = &vo.GetReductionResp{}
	shopAdmin, err := t.shopRepo.GetShopAdminByShopId(req.ShopId)
	if err != nil {
		return
	}
	rand_reduction := shopAdmin.RandReduction
	r := rand.New(rand.NewSource(time.Now().UnixNano())) //以当前时间纳秒为种子
	fmt.Println(rand_reduction)
	resp.Reduction = r.Int63n(rand_reduction + 1)
	return
}

// 微信和支付宝小程序，扫码支付
func (t *Pay) PayQrCode(ctx context.Context, req *vo.PayQrCodeReq) (resp *vo.PayQrCodeResp, err error) {
	g.Log().Line().Printf(nil, "%+v", req)

	//计算金豆和随机立减，算出最终打给银盛的钱
	payOrder, err := t.getAmount(req.Price, req.Reduction, req.Bean)
	if err != nil {
		return
	}

	//获取商铺信息
	shop, err := t.shopRepo.GetShopById(req.ShopId)
	if err != nil {
		return
	}

	//创建订单记录
	payOrder.OrderId = guid.S()
	payOrder.OpenId = req.OpenId
	payOrder.Mobile = req.Mobile
	payOrder.ShopId = req.ShopId
	payOrder.Channel = req.Channel
	payOrder.Created = gtime.Now()
	payOrder.Updated = payOrder.Created

	err = t.payOrderRepo.CreatePayOrder(payOrder)
	if err != nil {
		return
	}

	yseRespBytes, err := t.ysePayRequestJson(shop, payOrder) //访问java项目，获取银盛返回的结果
	if err != nil {
		return
	}
	fmt.Println(string(yseRespBytes))
	g.Log().Line().Printf(nil, string(yseRespBytes))

	yseResp, err := t.yseParseResp(payOrder.Channel, yseRespBytes) //解析报文返回的报文
	if err != nil {
		return
	}
	fmt.Println(yseResp)
	if yseResp.OutTradeNo != payOrder.OrderId {
		errStr := fmt.Sprintf("银盛返回订单号错误，银盛订单号:%s,余乐兑订单号:%s", yseResp.OutTradeNo, payOrder.OpenId)
		err = errors.New(errStr)
		return
	}
	//更新支付订单表字段
	updates := g.Map{"ysePayStatus": yseResp.TradeStatus, "updated": time.Now()}
	err = t.payOrderRepo.UpdatePayOrderByOrderId(updates, payOrder.OpenId)
	if err != nil {
		return
	}
	resp = &vo.PayQrCodeResp{}
	resp.OrderId = payOrder.OrderId
	resp.Bean = payOrder.Bean
	resp.Reduction = payOrder.RandReduce
	resp.JsapiPayInfo = yseResp.JsapiPayInfo
	return
}

func (t *Pay) getAmount(orderPrice string, reduction int, bean float64) (payOrder *po.PayOrder, err error) {
	payOrder = &po.PayOrder{}
	/*
		shopAdmin, err := t.shopRepo.GetShopAdminByShopId(shopId)
		if err != nil {
			return payOrder, err
		}
	*/
	price, err := strconv.ParseFloat(orderPrice, 64)
	if err != nil {
		return
	}

	payOrder.Price = price
	payOrder.Bean = bean * 0.15
	price = price - payOrder.Bean //去除金豆后的价格
	payOrder.RandReduce = float64(reduction) * 0.01
	payOrder.Amount = price - payOrder.RandReduce //去除随机立减和金豆后的价格
	if payOrder.Amount < 0.01 {
		err = errors.New("支付金额小于1分,失败")
		return
	}
	return
}

// 微信用户登录
func (t *Pay) Login(ctx context.Context, req *vo.WxLoginReq) (res *vo.WxLoginRes, err error) {
	fmt.Println("11-----", req)

	res, err = t.wxAuthorize(req.JsCode)
	if err != nil {
		return
	}

	//根据openId查询手机号
	userItem, _ := t.userRepo.GetUserByWxId(res.OpenId)
	res.Mobile = userItem.Mobile
	res.Bean = userItem.Bean
	return
}

// 用户注册
func (t *Pay) WxRegister(ctx context.Context, req *vo.WxMobileReq) (res *vo.WxMobileRes, err error) {
	fmt.Println("WxRegister----", req)
	value, err := g.Redis().Get(ctx, "WxAccessToken")
	if err != nil {
		return
	}
	fmt.Println("1111111", err)
	accessToken := value.String()
	fmt.Println("-------", accessToken)
	if accessToken == "" { //从微信小程序获取token，并更新redis
		fmt.Println("2222222")
		accessToken, err = t.getWeiXinAccessToken()
		if err != nil {
			fmt.Println("444--", err)
			return
		}
	}
	fmt.Println("---->   ", accessToken)
	//获取手机号
	mobile, err := t.getUserPhoneNumber(req.Code, accessToken)
	if err != nil {
		return
	}
	res = &vo.WxMobileRes{}
	res.Mobile = mobile
	//查询此手机号在数据库中是否存在
	ok, err := t.userRepo.MobileExist(mobile)
	if err != nil {
		return
	}
	if ok { //如果存在，更新openId
		updates := g.Map{"wx_id": req.OpenId, "update_time": gtime.Now()}
		err = t.userRepo.UpdatesUser(updates, mobile)
		return
	}

	//不存在的，创建
	user := po.User{}
	user.UserId = guid.S()
	user.WxId = req.OpenId
	user.Mobile = mobile
	user.CreateTime = gtime.Now()
	user.UpdateTime = user.CreateTime
	err = t.userRepo.CreateUser(&user)
	if err != nil {
		return
	}
	res = &vo.WxMobileRes{}
	res.Mobile = mobile
	return
}

func (t *Pay) yseParseResp(channel int, respBytes []byte) (*vo.BusPayResp, error) {
	yepayOnlineWeixinPayResponse := &vo.BusPayResp{}
	if channel == 1 { //微信
		ysePayResp := &vo.WxPayResp{}
		fmt.Println("999------->   ", string(respBytes))
		err := json.Unmarshal(respBytes, ysePayResp)
		if err != nil {
			return nil, err
		}
		fmt.Println("银盛返回的应答:", ysePayResp)
		yepayOnlineWeixinPayResponse = &ysePayResp.YsepayOnlineWeixinPayResponse
	} else { //支付宝
		ysePayResp := &vo.ZfbPayResp{}
		err := json.Unmarshal(respBytes, ysePayResp)
		if err != nil {
			return nil, err
		}
		fmt.Println("银盛返回的应答:", ysePayResp)
		yepayOnlineWeixinPayResponse = &ysePayResp.YsepayOnlineAlijsapiPayResponse

	}
	if yepayOnlineWeixinPayResponse.Code != "10000" {
		return nil, errors.New("银盛应答返回错误:" + yepayOnlineWeixinPayResponse.Msg)
	}
	return yepayOnlineWeixinPayResponse, nil
}

func (t *Pay) ysePayRequestJson(shop *po.Shop, payOrder *po.PayOrder) ([]byte, error) {
	//业务请求参数
	busReq := vo.PayBusReq{}
	busReq.OutTradeNo = payOrder.OrderId                                  //订单编号
	busReq.Shopdate = payOrder.Created.Format("20060102")                 //商户系统的交易发生日期格式
	busReq.Subject = "余乐兑小程序订单"                                           //订单备注
	busReq.TotalAmount = fmt.Sprintf("%.2f", payOrder.Amount)             //该笔订单的资金总额,保留两位小数
	busReq.Currency = "CNY"                                               //默认人民币
	busReq.SellerId = shop.ChildMerchNumber                               //银盛商户ID
	busReq.TimeoutExpress = "1h"                                          //设置未付款交易的超时时间，一个小时
	busReq.BusinessCode = g.Cfg().MustGet(nil, "ysepay.busCode").String() //业务代码

	var bjson []byte
	var err error
	if payOrder.Channel == 1 { //微信渠道
		wxBusReq := vo.PayWxBusReq{PayBusReq: busReq}
		wxBusReq.SubOpenid = payOrder.OpenId                           //微信用户ID
		wxBusReq.IsMinipg = "1"                                        //微信小程序支付:1
		wxBusReq.Appid = g.Cfg().MustGet(nil, "weixin.appId").String() //微信小程序APPID
		bjson, err = json.Marshal(wxBusReq)
		if err != nil {
			return nil, err
		}
	} else { //支付宝渠道
		zfBusReq := vo.PayZfBusReq{PayBusReq: busReq}
		zfBusReq.BuyerId = payOrder.OpenId //支付宝用户ID
		bjson, err = json.Marshal(zfBusReq)
		if err != nil {
			return nil, err
		}
	}

	commonReq := vo.PayCommonReq{}
	if payOrder.Channel == 1 { //微信渠道
		commonReq.Method = "ysepay.online.weixin.pay"
	} else { //支付宝渠道
		commonReq.Method = "ysepay.online.alijsapi.pay"
	}
	commonReq.PartnerId = g.Cfg().MustGet(nil, "ysepay.CERTID").String()    //在银盛支付开设的服务商商户号
	commonReq.Timestamp = time.Now().Format("2006-01-02 15:04:05")          //发送请求的时间
	commonReq.Charset = "UTF-8"                                             //商户网站使用的编码格式
	commonReq.SignType = "SM"                                               //报文签名算法
	commonReq.NotifyUrl = g.Cfg().MustGet(nil, "ysepay.notifyUrl").String() //交易成功异步通知到商户的后台地址
	commonReq.Version = "3.0"                                               //接口版本

	commonReq.BizContent = string(bjson)
	bjson, err = json.Marshal(&commonReq)
	if err != nil {
		return nil, err
	}
	url := g.Cfg().MustGet(nil, "ysepay.url").String()
	xxx := string(bjson)
	fmt.Println(xxx)
	//发送给java项目，让其访问银盛接口
	bjson, err = common.HttpPost(url, "application/json", bjson)
	if err != nil {
		return nil, err
	}
	return bjson, err
}

// 微信授权获取openId
func (t *Pay) wxAuthorize(jsCode string) (*vo.WxLoginRes, error) {
	var urlResp *http.Response
	var err error
	appid := g.Cfg().MustGet(nil, "weixin.appId").String()
	wxSecret := g.Cfg().MustGet(nil, "weixin.secret").String()
	wx_url := "https://api.weixin.qq.com/sns/jscode2session?appid=" + appid +
		"&secret=" + wxSecret + "&js_code=" + jsCode + "&grant_type=authorization_code"
	fmt.Println("jsCode:", jsCode)
	for i := 0; i < 2; i++ { // 失败一次，再次调用
		urlResp, err = http.Get(wx_url)
		if err == nil { // 成功的话，跳出
			break
		}
	}
	if err != nil {
		return nil, err
	}
	body, err := io.ReadAll(urlResp.Body)
	if err != nil {
		return nil, err
	}
	urlResp.Body.Close()
	sessionResp := vo.WxLoginRes{} // 用户标志信息
	err = json.Unmarshal(body, &sessionResp)
	if err != nil {
		return nil, err
	}
	if sessionResp.ErrCode != 0 {
		err = errors.New("errCode:" + strconv.Itoa(sessionResp.ErrCode) + "  errMsg:" + sessionResp.ErrMsg)
		return nil, err
	}
	return &sessionResp, err
}

// 获取accessToken
func (t *Pay) getWeiXinAccessToken() (string, error) {
	type WeiXinAccessResp struct {
		AccessToken string `json:"access_token"` // 获取到的凭证
		ExpiresIn   int    `json:"expires_in"`   // 凭证有效时间 单位：秒。目前是7200秒之内的值。
		Errcode     int    `json:"errcode"`
		Errmsg      string `json:"errmsg"`
	}
	type WxSessionResp struct {
		OpenId     string `json:"openid"`      // 用户唯一标识
		SessionKey string `json:"session_key"` // 会话密钥
		UnionId    string `json:"unionid"`     // 用户在开放平台的唯一标识符，若当前小程序已绑定到微信开放平台帐号下会返回
		ErrCode    int    `json:"errcode"`     // 错误码
		ErrMsg     string `json:"errmsg"`      // 错误信息
	}

	resp := WeiXinAccessResp{}
	appid := g.Cfg().MustGet(nil, "weixin.appId").String()
	wxSecret := g.Cfg().MustGet(nil, "weixin.secret").String()
	url := "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=" +
		appid + "&secret=" + wxSecret
	fmt.Println("获取token:", url)
	var urlResp *http.Response
	var err error
	for i := 0; i < 2; i++ { // 失败一次，再次调用
		urlResp, err = http.Get(url)
		if err == nil { // 成功的话，跳出
			break
		}
	}
	if err != nil {
		return "", err
	}
	body, err := io.ReadAll(urlResp.Body)
	if err != nil {
		return "", err
	}
	urlResp.Body.Close()
	fmt.Println(string(body))
	sessionResp := WxSessionResp{}
	err = json.Unmarshal(body, &resp)
	if err != nil {
		return "", err
	}
	if resp.Errcode != 0 {
		err = errors.New(sessionResp.ErrMsg)
		return "", err
	}
	// AccessToken 存入Redis中
	live := resp.ExpiresIn - 60*10 // 提前10分钟过期
	ctx := gctx.New()
	err = g.Redis().SetEX(ctx, "WxAccessToken", resp.AccessToken, int64(live))
	if err != nil {
		return "", err
	}
	return resp.AccessToken, nil
}

// 获取手机号
func (s *Pay) getUserPhoneNumber(code, accessToken string) (string, error) {
	type WeiXinWatermark struct {
		Appid     string `json:"appid"`     // 小程序appid
		Timestamp int    `json:"timestamp"` // 用户获取手机号操作的时间戳
	}
	type WeixinPhoneInfo struct {
		PhoneNumber     string          `json:"phoneNumber"`     // 用户绑定的手机号（国外手机号会有区号）
		PurePhoneNumber string          `json:"purePhoneNumber"` // 没有区号的手机号
		CountryCode     string          `json:"countryCode"`     // 区号
		Watermark       WeiXinWatermark `json:"watermark"`       // 数据水印
	}
	type WeiXinMobileResp struct {
		Errcode   int             `json:"errcode"`
		Errmsg    string          `json:"errmsg"`
		PhoneInfo WeixinPhoneInfo `json:"phone_info"` // 用户手机号信息
	}

	type WeiXinMobileReq struct {
		Code string `json:"code"` // 前端传的Code
	}
	req := WeiXinMobileReq{Code: code}
	url := "https://api.weixin.qq.com/wxa/business/getuserphonenumber?access_token=" + accessToken
	fmt.Println("Code:", req.Code)
	reqParam, err := json.Marshal(&req)
	if err != nil {
		return "", err
	}
	reqBody := strings.NewReader(string(reqParam))
	httpReq, err := http.NewRequest("POST", url, reqBody)
	if err != nil {
		return "", err
	}
	httpReq.Header.Add("Content-Type", "application/json")
	var urlResp *http.Response
	for i := 0; i < 2; i++ { // 失败一次，再次调用
		urlResp, err = http.DefaultClient.Do(httpReq)
		if err == nil { // 成功的话，跳出
			break
		}
	}
	if err != nil {
		return "", err
	}
	body, err := io.ReadAll(urlResp.Body)
	urlResp.Body.Close()
	resp := WeiXinMobileResp{}
	fmt.Println(string(body))
	err = json.Unmarshal(body, &resp)
	if err != nil {
		return "", err
	}
	if resp.Errcode != 0 {
		fmt.Println(resp)
		err = errors.New(resp.Errmsg)
		return "", err
	}
	return resp.PhoneInfo.PhoneNumber, nil
}