微信支付支持退款

platformapi/wxpay/wxpay.go

@@ -3,6 +3,7 @@ package wxpay
 import (
 	"bytes"
 	"crypto/md5"
+	"crypto/tls"
 	"encoding/xml"
 	"fmt"
 	"net/http"
@@ -16,8 +17,8 @@ import (
 )
 
 const (
-	prodURL    = "https://api.mch.weixin.qq.com/pay"
-	sandboxURL = "https://api.mch.weixin.qq.com/sandboxnew/pay"
+	prodURL    = "https://api.mch.weixin.qq.com"
+	sandboxURL = "https://api.mch.weixin.qq.com/sandboxnew"
 )
 
 const (
@@ -169,6 +170,46 @@ type CreateOrderResult struct {
 	CodeURL   string `json:"code_url"`
 }
 
+type PayRefundParam struct {
+	RequestBase
+
+	TransactionID string `json:"transaction_id,omitempty" xml:"transaction_id,omitempty"`
+	OutTradeNo    string `json:"out_trade_no,omitempty" xml:"out_trade_no,omitempty"`
+	OutRefundNo   string `json:"out_refund_no" xml:"out_refund_no"`
+	TotalFee      int    `json:"total_fee" xml:"total_fee"`
+	RefundFee     int    `json:"refund_fee" xml:"refund_fee"`
+
+	RefundFeeType string `json:"refund_fee_type,omitempty" xml:"refund_fee_type,omitempty"`
+	RefundDesc    CData  `json:"refund_desc,omitempty" xml:"refund_desc,omitempty"`
+	NotifyURL     string `json:"notify_url,omitempty" xml:"notify_url,omitempty"`
+}
+
+type PayRefundResult struct {
+	ReturnCode string `json:"return_code" xml:"return_code"`
+	ReturnMsg  string `json:"return_msg" xml:"return_msg"`
+
+	AppID      string `json:"appid" xml:"appid"`
+	DeviceInfo string `json:"device_info,omitempty" xml:"device_info,omitempty"`
+	MchID      string `json:"mch_id" xml:"mch_id"`
+	NonceStr   string `json:"nonce_str" xml:"nonce_str"`
+	Sign       string `json:"sign" xml:"sign"`
+	ResultCode string `json:"result_code" xml:"result_code"`
+	ErrCode    string `json:"err_code,omitempty" xml:"err_code,omitempty"`
+	ErrCodeDes string `json:"err_code_des,omitempty" xml:"err_code_des,omitempty"`
+
+	CashFee           string `json:"cash_fee"`
+	CashRefundFee     string `json:"cash_refund_fee"`
+	CouponRefundCount string `json:"coupon_refund_count"`
+	CouponRefundFee   string `json:"coupon_refund_fee"`
+	OutRefundNo       string `json:"out_refund_no"`
+	OutTradeNo        string `json:"out_trade_no"`
+	RefundChannel     string `json:"refund_channel"`
+	RefundFee         string `json:"refund_fee"`
+	RefundID          string `json:"refund_id"`
+	TotalFee          string `json:"total_fee"`
+	TransactionID     string `json:"transaction_id"`
+}
+
 func New(appID, appKey, mchID string, config ...*platformapi.APIConfig) *API {
 	curConfig := platformapi.DefAPIConfig
 	if len(config) > 0 {
@@ -183,6 +224,19 @@ func New(appID, appKey, mchID string, config ...*platformapi.APIConfig) *API {
 	}
 }
 
+func NewWithCertificate(appID, appKey, mchID string, certPEMBlock, keyPEMBlock []byte, config ...*platformapi.APIConfig) (a *API) {
+	certs, err := tls.X509KeyPair(certPEMBlock, keyPEMBlock)
+	if err == nil {
+		a = New(appID, appKey, mchID, config...)
+		a.client.Transport = &http.Transport{
+			TLSClientConfig: &tls.Config{
+				Certificates: []tls.Certificate{certs},
+			},
+		}
+	}
+	return a
+}
+
 func (a *API) GetAppID() string {
 	return a.appID
 }
@@ -237,6 +291,12 @@ func (a *API) AccessAPI(action string, requestParam IRequestBase) (retVal map[st
 			retVal, errLevel, err = a.checkResultAsMap(jsonResult1[platformapi.KeyData].(string))
 			return errLevel, err
 		})
+	if err == nil {
+		if utils.Interface2String(retVal["result_code"]) != ResponseCodeSuccess {
+			err = utils.NewErrorCode(utils.Interface2String(retVal["err_code_des"]), utils.Interface2String(retVal["err_code"]))
+			retVal = nil
+		}
+	}
 	return retVal, err
 }
 
@@ -251,13 +311,6 @@ func (a *API) checkResultAsMap(xmlStr string) (result map[string]interface{}, er
 			errLevel = platformapi.ErrLevelGeneralFail
 			err = utils.NewErrorCode(utils.Interface2String(result["return_msg"]), returnCode)
 			result = nil
-		} else {
-			// if utils.Interface2String(result["result_code"]) != ResponseCodeSuccess {
-			// 	errLevel = platformapi.ErrLevelGeneralFail
-			// 	err = utils.NewErrorCode(utils.Interface2String(result["err_code_desc"]), utils.Interface2String(result["err_code"]))
-			// 	result = nil
-			// } else {
-			// }
 		}
 	}
 	return result, errLevel, err
@@ -281,7 +334,7 @@ func (a *API) OrderQuery(transactionID, outTradeNo string) (orderInfo *OrderInfo
 		TransactionID: transactionID,
 		OutTradeNo:    outTradeNo,
 	}
-	retVal, err := a.AccessAPI("orderquery", param)
+	retVal, err := a.AccessAPI("pay/orderquery", param)
 	if err == nil {
 		err = utils.Map2StructByJson(retVal, &orderInfo, false)
 	}
@@ -289,9 +342,20 @@ func (a *API) OrderQuery(transactionID, outTradeNo string) (orderInfo *OrderInfo
 }
 
 func (a *API) CreateUnifiedOrder(param *CreateOrderParam) (createOrderResult *CreateOrderResult, err error) {
-	retVal, err := a.AccessAPI("unifiedorder", param)
+	retVal, err := a.AccessAPI("pay/unifiedorder", param)
 	if err == nil {
 		err = utils.Map2StructByJson(retVal, &createOrderResult, false)
 	}
 	return createOrderResult, err
 }
+
+func (a *API) PayRefund(param *PayRefundParam) (refundResult *PayRefundResult, err error) {
+	if a.client.Transport == nil {
+		return nil, fmt.Errorf("没有配置证书，不能退款")
+	}
+	retVal, err := a.AccessAPI("secapi/pay/refund", param)
+	if err == nil {
+		err = utils.Map2StructByJson(retVal, &refundResult, false)
+	}
+	return refundResult, err
+}