package weChat

import (
	"context"
	"github.com/wechatpay-apiv3/wechatpay-go/core"
	"github.com/wechatpay-apiv3/wechatpay-go/services/refunddomestic"
)

type RefundRequest struct {
	TransactionId      string `json:"transaction_id" comment:"微信订单号"`
	OutTradeNo         string `json:"out_trade_no" comment:"商户订单号"`
	OutRefundNo        string `json:"out_refund_no" comment:"退款订单号"`
	Reason             string `json:"reason" comment:"退款原因"`
	RefundAmount       int64  `json:"refund_amount" comment:"退款金额"`
	PaymentAmountTotal int64  `json:"payment_amount_total" comment:"支付金额"`
	NotifyUrl          string `json:"notify_url" comment:"回调地址"`
}

// Refund 退款
func (r RefundRequest) Refund() (*refunddomestic.Refund, error) {
	client, err := createClient()
	if err != nil {
		return nil, err
	}

	refundRequest := refunddomestic.CreateRequest{
		TransactionId: core.String(r.TransactionId),
		OutTradeNo:    core.String(r.OutTradeNo),
		OutRefundNo:   core.String(r.OutRefundNo),
		Reason:        core.String(r.Reason),
		NotifyUrl:     core.String(r.NotifyUrl),
		Amount: &refunddomestic.AmountReq{
			Currency: core.String("CNY"),
			Refund:   core.Int64(r.RefundAmount),
			Total:    core.Int64(r.PaymentAmountTotal),
		},
	}

	svc := refunddomestic.RefundsApiService{Client: client}
	resp, _, err := svc.Create(context.Background(), refundRequest)
	if err != nil {
		return nil, err
	}

	return resp, nil
}