fix version 1

module/finance/wallet/internal/logic/wechat/wx_callback.go

@@ -5,6 +5,7 @@ import (
 	"encoding/json"
 
 	"bsm/full/module/finance/wallet/internal/config"
+	"bsm/full/module/finance/wallet/internal/models"
 	pb "bsm/full/module/finance/wallet/pb"
 	"git.apinb.com/bsm-sdk/core/errcode"
 	"git.apinb.com/bsm-sdk/core/printer"
@@ -12,6 +13,8 @@ import (
 )
 
 // 微信支付回调
+// 完成验签与解密后，按商户订单号反查本地支付单、核对金额，
+// 条件更新为支付成功并在同一事务内入账写流水。
 func WxCallback(ctx context.Context, in *pb.WxCallBackRequest) (reply *pb.CallBackReply, err error) {
 	var notifyReq = &wechat.V3NotifyReq{}
 	data, err := json.Marshal(in)
@@ -23,7 +26,11 @@ func WxCallback(ctx context.Context, in *pb.WxCallBackRequest) (reply *pb.CallBa
 		return nil, errcode.ErrJsonUnmarshal
 	}
 
-	wx, _ := NewWechat()
+	wx, err := NewWechat()
+	if err != nil {
+		printer.Error(err.Error())
+		return &pb.CallBackReply{Code: "FAIL", Message: "支付客户端初始化失败"}, nil
+	}
 	pubKey := wx.Client.WxPublicKeyMap()
 	err = notifyReq.VerifySignByPKMap(pubKey)
 	if err != nil {
@@ -33,9 +40,22 @@ func WxCallback(ctx context.Context, in *pb.WxCallBackRequest) (reply *pb.CallBa
 	res, err := notifyReq.DecryptPayCipherText(config.Spec.WeChat.APIV3Key)
 	if err != nil {
 		printer.Error(err.Error())
-		return &pb.CallBackReply{Code: "FAIL", Message: "验签失败"}, err
+		return &pb.CallBackReply{Code: "FAIL", Message: "解密失败"}, err
 	}
-	// Todo: 业务逻辑
-	payResult, _ := json.Marshal(res)
-	return &pb.CallBackReply{Code: "SUCCESS", Message: string(payResult)}, nil
+
+	// 仅处理支付成功通知，其余状态直接应答，避免渠道重复推送
+	if res.TradeState != "SUCCESS" {
+		return &pb.CallBackReply{Code: "SUCCESS", Message: res.TradeState}, nil
+	}
+	if res.Amount == nil {
+		return &pb.CallBackReply{Code: "FAIL", Message: "金额缺失"}, nil
+	}
+
+	// 结算：金额核对 + 条件更新为成功 + 事务内入账写流水（幂等）
+	if err := models.SettlePaymentSuccess(res.OutTradeNo, res.TransactionId, int64(res.Amount.Total)); err != nil {
+		printer.Error(err.Error())
+		return &pb.CallBackReply{Code: "FAIL", Message: "结算失败"}, nil
+	}
+
+	return &pb.CallBackReply{Code: "SUCCESS", Message: "SUCCESS"}, nil
 }