42 lines
1.2 KiB
Go
42 lines
1.2 KiB
Go
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package wechat
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import (
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"context"
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"fmt"
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"time"
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"github.com/ArtisanCloud/PowerWeChat/v3/src/payment/refund/request"
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)
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// RefundOrder 调用微信支付 v3 退款接口（全额退款）
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// orderSn: 商户订单号；transactionID: 微信支付单号（二选一，有则优先用 transactionID）；totalCents: 订单金额（分）；reason: 退款原因
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func RefundOrder(ctx context.Context, orderSn, transactionID string, totalCents int, reason string) error {
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if paymentApp == nil || paymentApp.Refund == nil {
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return fmt.Errorf("支付/退款未初始化")
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}
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if totalCents <= 0 {
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return fmt.Errorf("退款金额必须大于 0")
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}
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outRefundNo := fmt.Sprintf("RF%s%06d", time.Now().Format("20060102150405"), time.Now().UnixNano()%1000000)
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if reason == "" {
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reason = "用户申请退款"
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}
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req := &request.RequestRefund{
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OutRefundNo: outRefundNo,
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Reason: reason,
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Amount: &request.RefundAmount{
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Refund: totalCents,
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Total: totalCents,
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Currency: "CNY",
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From: []*request.RefundAmountFrom{},
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},
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}
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if transactionID != "" {
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req.TransactionID = transactionID
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} else {
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req.OutTradeNo = orderSn
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}
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_, err := paymentApp.Refund.Refund(ctx, req)
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return err
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}
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