80 lines
2.7 KiB
Go
80 lines
2.7 KiB
Go
package weChat
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import (
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"context"
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"errors"
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"github.com/wechatpay-apiv3/wechatpay-go/core"
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"github.com/wechatpay-apiv3/wechatpay-go/core/option"
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"github.com/wechatpay-apiv3/wechatpay-go/services/refunddomestic"
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"github.com/wechatpay-apiv3/wechatpay-go/utils"
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"hepa-calc-api/config"
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"path/filepath"
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)
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type RefundRequest struct {
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TransactionId string `json:"transaction_id" comment:"微信订单号"`
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OutTradeNo string `json:"out_trade_no" comment:"商户订单号"`
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OutRefundNo string `json:"out_refund_no" comment:"退款订单号"`
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Reason string `json:"reason" comment:"退款原因"`
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RefundAmount int64 `json:"refund_amount" comment:"退款金额"`
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PaymentAmountTotal int64 `json:"payment_amount_total" comment:"支付金额"`
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NotifyUrl string `json:"notify_url" comment:"回调地址"`
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}
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// Refund 退款
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func (r RefundRequest) Refund() (*refunddomestic.Refund, error) {
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mchId := ""
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mchCertificateSerialNumber := ""
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v3ApiSecret := ""
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mchId = config.C.Wechat.Pay1636644248.MchId
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mchCertificateSerialNumber = config.C.Wechat.Pay1636644248.MchCertificateSerialNumber
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v3ApiSecret = config.C.Wechat.Pay1636644248.V3ApiSecret
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if mchId == "" {
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return nil, errors.New("商户号错误")
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}
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// certsDir := "extend/weChat/certs/" + mchId + "/apiclient_key.pem"
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// 使用 utils 提供的函数从本地文件中加载商户私钥，商户私钥会用来生成请求的签名
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certsDir := filepath.Join("extend/weChat/certs", mchId, "/apiclient_key.pem")
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// certsDir := filepath.Join("extend/weChat/certs", "/1636644248/apiclient_key.pem")
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mchPrivateKey, err := utils.LoadPrivateKeyWithPath(certsDir)
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if err != nil {
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return nil, errors.New("微信签名生成失败")
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}
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ctx := context.Background()
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// 使用商户私钥等初始化 client，并使它具有自动定时获取微信支付平台证书的能力
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opts := []core.ClientOption{
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option.WithWechatPayAutoAuthCipher(mchId, mchCertificateSerialNumber, mchPrivateKey, v3ApiSecret),
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}
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client, err := core.NewClient(ctx, opts...)
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if err != nil {
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return nil, errors.New(err.Error())
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}
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refundRequest := refunddomestic.CreateRequest{
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TransactionId: core.String(r.TransactionId),
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OutTradeNo: core.String(r.OutTradeNo),
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OutRefundNo: core.String(r.OutRefundNo),
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Reason: core.String(r.Reason),
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NotifyUrl: core.String(r.NotifyUrl),
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Amount: &refunddomestic.AmountReq{
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Currency: core.String("CNY"),
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Refund: core.Int64(r.RefundAmount),
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Total: core.Int64(r.PaymentAmountTotal),
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},
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}
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svc := refunddomestic.RefundsApiService{Client: client}
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resp, _, err := svc.Create(ctx, refundRequest)
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if err != nil {
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return nil, errors.New(err.Error())
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}
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return resp, nil
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}
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