退款

utils/basic/basic.go

@@ -52,9 +52,11 @@ var (
 	CodeSafeValueRangeErr = &StatusResponse{5040, "value not in range"}    // 值不在范围内
 	CodeTemplateErr       = &StatusResponse{5040, "template parsed error"} // 模板解析错误
 
-	CodeOrderNotFoundErr      = &StatusResponse{5030, "order not found"}                   //未找到订单
-	CodeCloudOrderNotFoundErr = &StatusResponse{5031, "cloud order not found"}             //未找到云仓订单
-	CodeOrderNotCancelledErr  = &StatusResponse{5032, "current order cannot be cancelled"} // 当前订单无法取消
+	CodeOrderNotFoundErr      = &StatusResponse{5030, "order not found"}                    //未找到订单
+	CodeCloudOrderNotFoundErr = &StatusResponse{5031, "cloud order not found"}              //未找到云仓订单
+	CodeOrderNotCancelledErr  = &StatusResponse{5032, "current order cannot be cancelled"}  // 当前订单无法取消
+	CodeOrderCancelledNotOk   = &StatusResponse{5033, "current order cancelled failed"}     // 当前订单取消失败
+	CodeOrderCancelledOk      = &StatusResponse{5034, "current order cancelled successful"} // 当前订单取消成功
 
 	CodePayNotFoundErr = &StatusResponse{5020, "pay info not found"}      // 支付信息无法查询
 	CodePayCancelOk    = &StatusResponse{5021, "cancellation successful"} // 支付取消成功

utils/handler/payHandler.go

@@ -0,0 +1,64 @@
+package handler
+
+import (
+	"fusenapi/constants"
+	"fusenapi/utils/pay"
+
+	"github.com/zeromicro/go-zero/core/mr"
+)
+
+type (
+	PayInfo struct {
+		TradeNo       string `json:"trade_no"`
+		PaymentMethod int64  `json:"payment_method"`
+		Key           string `json:"key"`
+	}
+	PayRefundHandlerReq struct {
+		PayInfoList []PayInfo
+	}
+	PayRefundHandlerRes struct {
+	}
+)
+
+// 申请第三方退款
+func PayRefundHandler(req *PayRefundHandlerReq) (res PayRefundHandlerRes, err error) {
+
+	_, err = mr.MapReduce(func(source chan<- interface{}) {
+		for _, payInfo := range req.PayInfoList {
+			source <- payInfo
+		}
+	}, func(item interface{}, writer mr.Writer[interface{}], cancel func(error)) {
+		payConfig := new(pay.Config)
+		payInfo := item.(PayInfo)
+		switch payInfo.PaymentMethod {
+		case int64(constants.PAYMETHOD_STRIPE):
+			// stripe 支付
+			payConfig.Stripe.Key = payInfo.Key
+		}
+		payDriver := pay.NewPayDriver(payInfo.PaymentMethod, payConfig)
+		_, err = payDriver.PayRefund(&pay.PayRefundReq{
+			TradeNo: payInfo.TradeNo,
+		})
+
+		if err != nil {
+			// Notice 如果不加 cancel(err),会返回校验成功的id; 如果加上cancel(err),返回的结果会是一个空列表
+			// Notice 实际上，如果这里返回错误，其他协程直接就退出了！
+			// Notice 看实际中业务的需求情况来定了...
+			cancel(err)
+		}
+		// Notice 这个必须加!
+		writer.Write(payInfo)
+	}, func(pipe <-chan interface{}, writer mr.Writer[interface{}], cancel func(error)) {
+		var payInfoList []PayInfo
+		for p := range pipe {
+			payInfoList = append(payInfoList, p.(PayInfo))
+		}
+		// Notice 这个必须加!
+		writer.Write(payInfoList)
+	})
+	if err != nil {
+		return res, err
+	}
+
+	return res, nil
+}

utils/pay/pay.go

@@ -20,7 +20,12 @@ func NewPayDriver(PayMethod int64, config *Config) Pay {
 
 // Pay 支付集成接口
 type Pay interface {
+
+	// 支付预处理
 	GeneratePrepayment(req *GeneratePrepaymentReq) (res *GeneratePrepaymentRes, err error)
+
+	// 支付退款申请
+	PayRefund(req *PayRefundReq) (res *PayRefundRes, err error)
 }
 
 type GeneratePrepaymentReq struct {
@@ -41,3 +46,10 @@ type GeneratePrepaymentRes struct {
 	ClientSecret string `json:"clientSecret"` //交易密钥
 	SessionId    string `json:"session_id"`   //SessionId
 }
+
+type PayRefundReq struct {
+	TradeNo string `json:"trade_no"` // 交易编号
+}
+
+type PayRefundRes struct {
+}

utils/pay/stripe.go

@@ -3,12 +3,25 @@ package pay
 import (
 	"github.com/stripe/stripe-go/v74"
 	"github.com/stripe/stripe-go/v74/checkout/session"
+	"github.com/stripe/stripe-go/v74/refund"
+	"github.com/zeromicro/go-zero/core/logx"
 )
 
 type Stripe struct {
 	Key string `json:"key"`
 }
 
+// 生成退款
+func (stripePay *Stripe) PayRefund(req *PayRefundReq) (res *PayRefundRes, err error) {
+	stripe.Key = stripePay.Key
+	params := &stripe.RefundParams{PaymentIntent: stripe.String(req.TradeNo)}
+	_, err = refund.New(params)
+	if err != nil {
+		logx.Error(err)
+	}
+	return res, err
+}
+
 // 生成预付款
 func (stripePay *Stripe) GeneratePrepayment(req *GeneratePrepaymentReq) (res *GeneratePrepaymentRes, err error) {
 	var productData stripe.CheckoutSessionLineItemPriceDataProductDataParams