package alipay

import (
	"errors"
	"fmt"
	"os"
	"path/filepath"
	"recook/internal/api/mobile/pay/public"
	"recook/internal/back"
	"recook/internal/dbc"
	"recook/internal/domain"
	"recook/internal/model/order"
	"recook/internal/model/pay"
	"recook/internal/service/comFunc"
	"recook/tools"
	"strconv"
	"time"

	"github.com/gin-gonic/gin"
	"github.com/jinzhu/gorm"
	"github.com/shopspring/decimal"
	"github.com/smartwalle/alipay/v3"
)

type createH5AlipayReq struct {
	UserID  uint `json:"userId" validate:"required,numeric"`
	OrderID uint `json:"orderId" validate:"required,numeric"`
}

func createH5Order(orderID uint, ip string, userID uint) (error, string) {
	now := time.Now().Unix()

	var od []order.Information
	if err := dbc.DB.Find(&od, "virtual_id = ?", orderID).Error; err != nil {
		return err, ""
	}

	if err := public.UpdateVirtualPay(orderID); err != nil {
		return err, ""
	}

	amount := decimal.Zero

	for _, v := range od {
		if err := public.ValidateOrderInfo(&v, now); err != nil {
			return err, ""
		}
		amount = amount.Add(v.ActualTotalAmount)
	}

	// 零支付
	if amount.IsZero() {
		return errors.New("接口调用错误"), ""
	}

	var detail pay.AlipayH5Detail
	if err := dbc.DB.First(&detail, "order_id = ?", orderID).Error; err != nil && err != gorm.ErrRecordNotFound {
		return err, ""
	}

	if detail.ID > 0 {
		tx := dbc.DB.Begin()
		{
			for _, v := range od {
				if v.PayMethod != order.AlipayH5ForOrderInfo {
					if err := tx.Model(&v).Updates(order.Information{
						PayIP:     ip,
						TradeNo:   detail.TradeNo,
						PayMethod: order.AlipayH5ForOrderInfo,
					}).Error; err != nil {
						tx.Rollback()
						return err, ""
					}
				}
			}
		}
		tx.Commit()
		return nil, detail.CreateOrderSign
	} else {
		if url, tradeNo, err := genUrl(od[0].Title, userID, orderID, amount); err != nil {
			return errors.New("失败"), ""
		} else {
			tx := dbc.DB.Begin()
			{
				for _, v := range od {
					if err = dbc.DB.Model(&v).Updates(order.Information{
						PayIP:     ip,
						TradeNo:   tradeNo,
						PayMethod: order.AlipayH5ForOrderInfo,
					}).Error; err != nil {
						tx.Rollback()
						return err, ""
					}
				}

				detail = pay.AlipayH5Detail{
					OrderId:         int64(orderID),
					TradeNo:         tradeNo,
					CreateOrderSign: url,
				}
				if err = tx.Create(&detail).Error; err != nil {
					tx.Rollback()
					return err, ""
				}
			}
			tx.Commit()
			return nil, url
		}
	}
}

/**
逻辑处理从之前的app支付过来的
*/
func CreateH5Alipay(c *gin.Context) {
	var p createH5AlipayReq
	err := tools.ParseParams(&p, c)
	if err != nil {
		back.Fail(c, err.Error())
		return
	}

	if !public.Judge(p.OrderID) {
		if err, result := createH5Order(p.OrderID, c.ClientIP(), p.UserID); err != nil {
			back.Err(c, err.Error())
			return
		} else {
			back.Suc(c, "操作成功", gin.H{
				"payUrl": result,
			})
			return
		}
	}

	if err = public.UpdateNormalPay(p.OrderID); err != nil {
		back.Err(c, err.Error())
		return
	}

	now := time.Now().Unix()

	var orderInfo order.Information
	err = dbc.DB.First(&orderInfo, "id = ?", p.OrderID).Error
	if err != nil {
		back.Err(c, err.Error())
		return
	}

	// 零支付
	if orderInfo.ActualTotalAmount.Equal(decimal.NewFromFloat(0.0)) {
		back.Fail(c, "接口调用错误")
		return
	}

	err = public.ValidateOrderInfo(&orderInfo, now)
	if err != nil {
		back.Fail(c, err.Error())
		return
	}

	var detail pay.AlipayH5Detail
	err = dbc.DB.First(&detail, "order_id = ?", orderInfo.ID).Error
	if err != nil && !gorm.IsRecordNotFoundError(err) {
		back.Err(c, err.Error())
		return
	}

	if detail.ID > 0 { // 如果生成过记录了
		back.Suc(c, "", gin.H{
			"payUrl": detail.CreateOrderSign,
		})

		if orderInfo.PayMethod != order.AlipayH5ForOrderInfo {
			err = dbc.DB.Model(&orderInfo).Updates(order.Information{
				PayIP:     c.ClientIP(),
				TradeNo:   detail.TradeNo,
				PayMethod: order.AlipayH5ForOrderInfo,
			}).Error
			if err != nil {
				back.Err(c, err.Error())
				return
			}
		}

	} else {
		if url, tradeNo, err := genUrl(orderInfo.Title, p.UserID, orderInfo.ID, orderInfo.ActualTotalAmount); err != nil {
			back.Fail(c, "失败")
		} else {
			err = dbc.DB.Model(&orderInfo).Updates(order.Information{
				PayIP:     c.ClientIP(),
				TradeNo:   tradeNo,
				PayMethod: order.AlipayH5ForOrderInfo,
			}).Error
			if err != nil {
				back.Err(c, err.Error())
				return
			}

			detail = pay.AlipayH5Detail{
				OrderId:         int64(orderInfo.ID),
				TradeNo:         tradeNo,
				CreateOrderSign: url,
			}
			dbc.DB.Create(&detail)
			back.Suc(c, "", gin.H{
				"payUrl": url,
			})
		}
	}
}

func genUrl(title string, userID uint, orderID uint, actualAmount decimal.Decimal) (string, string, error) {
	var privateKey = RecookToAliPayPrivateKeyForTest
	client, err := alipay.New(AppID0602, privateKey, true)

	if err != nil {
		errMsg := fmt.Sprintf("加载出现错误%s,", err)
		comFunc.PrintErr(errMsg)
		return "", "", err
	}

	dir, _ := os.Executable()
	exPath := filepath.Dir(dir)
	alipayH5Path := exPath + "/credentials/alipay_h5/"

	err = client.LoadAppPublicCertFromFile(alipayH5Path + "appCertPublicKey_2021001152664931.crt") // 加载应用公钥证书
	if err != nil {
		panic(err)
	}
	err = client.LoadAliPayRootCertFromFile(alipayH5Path + "alipayRootCert.crt") // 加载支付宝根证书
	if err != nil {
		panic(err)
	}
	err = client.LoadAliPayPublicCertFromFile(alipayH5Path + "alipayCertPublicKey_RSA2.crt") // 加载支付宝公钥证书
	if err != nil {
		panic(err)
	}

	var pa = alipay.TradeWapPay{}
	// 回调地址
	pa.NotifyURL = domain.GetName() + "/api/v1/pay/alipay/h5_callback"
	// 跳转页面
	pa.ReturnURL = "https://h5.reecook.cn/app/paydone.html"
	// 应该是商城名称
	pa.Subject = title
	// 生成唯一订单号
	outTradeNo := public.GenerateOrderAliPayOutTradeNo(userID, orderID)
	pa.OutTradeNo = outTradeNo
	amount, _ := strconv.ParseFloat(actualAmount.String(), 2)
	pa.TotalAmount = strconv.FormatFloat(amount, 'f', 2, 64)
	pa.ProductCode = "AlipayH5"
	// pa.ProductCode = "QUICK_WAP_WAY"
	pa.TimeExpire = time.Now().Add(60 * time.Minute).Format("2006-01-02 15:04")
	pa.TimeoutExpress = time.Now().Add(15 * time.Minute).Format("2006-01-02 15:04:05")
	// bs, _ := json.Marshal(pa)
	// beego.Info(string(bs))
	payUrl, err := client.TradeWapPay(pa)
	if err != nil {
		errMsg := fmt.Sprintf("alipay-h5 支付出现错误%s,", err)
		comFunc.PrintErr(errMsg)
		return "", "", err
	}

	var payURL = payUrl.String()

	return payURL, outTradeNo, nil
}