62 lines
2.0 KiB
Go
62 lines
2.0 KiB
Go
package wechat
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import (
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"context"
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"encoding/json"
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"bsm/full/module/finance/wallet/internal/config"
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"bsm/full/module/finance/wallet/internal/models"
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pb "bsm/full/module/finance/wallet/pb"
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"git.apinb.com/bsm-sdk/core/errcode"
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"git.apinb.com/bsm-sdk/core/printer"
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"github.com/go-pay/gopay/wechat/v3"
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)
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// 微信支付回调
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// 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，
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// 条件更新为支付成功并在同一事务内入账写流水。
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func WxCallback(ctx context.Context, in *pb.WxCallBackRequest) (reply *pb.CallBackReply, err error) {
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var notifyReq = &wechat.V3NotifyReq{}
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data, err := json.Marshal(in)
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if err != nil {
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return nil, errcode.ErrJsonMarshal
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}
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err = json.Unmarshal(data, ¬ifyReq)
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if err != nil {
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return nil, errcode.ErrJsonUnmarshal
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}
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wx, err := NewWechat()
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if err != nil {
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printer.Error(err.Error())
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return &pb.CallBackReply{Code: "FAIL", Message: "支付客户端初始化失败"}, nil
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}
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pubKey := wx.Client.WxPublicKeyMap()
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err = notifyReq.VerifySignByPKMap(pubKey)
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if err != nil {
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printer.Error(err.Error())
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return &pb.CallBackReply{Code: "FAIL", Message: "验签失败"}, nil
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}
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res, err := notifyReq.DecryptPayCipherText(config.Spec.WeChat.APIV3Key)
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if err != nil {
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printer.Error(err.Error())
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return &pb.CallBackReply{Code: "FAIL", Message: "解密失败"}, err
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}
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// 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
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if res.TradeState != "SUCCESS" {
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return &pb.CallBackReply{Code: "SUCCESS", Message: res.TradeState}, nil
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}
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if res.Amount == nil {
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return &pb.CallBackReply{Code: "FAIL", Message: "金额缺失"}, nil
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}
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// 结算：金额核对 + 条件更新为成功 + 事务内入账写流水（幂等）
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if err := models.SettlePaymentSuccess(res.OutTradeNo, res.TransactionId, int64(res.Amount.Total)); err != nil {
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printer.Error(err.Error())
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return &pb.CallBackReply{Code: "FAIL", Message: "结算失败"}, nil
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}
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return &pb.CallBackReply{Code: "SUCCESS", Message: "SUCCESS"}, nil
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}
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