95 lines
2.4 KiB
Go
95 lines
2.4 KiB
Go
package logic
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import (
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"context"
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"fmt"
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"strconv"
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"time"
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pkgpay "lone-services/pkg/payment"
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"lone-services/pkg/modelbase"
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"lone-services/pkg/utils"
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payment "lone-services/rpc/payment/pb"
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"lone-services/services/payment/internal/channel"
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"lone-services/services/payment/internal/dao"
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"lone-services/services/payment/internal/model"
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"lone-services/services/payment/internal/svc"
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"github.com/zeromicro/go-zero/core/logx"
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)
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type RefundLogic struct {
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ctx context.Context
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svcCtx *svc.ServiceContext
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logx.Logger
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}
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func NewRefundLogic(ctx context.Context, svcCtx *svc.ServiceContext) *RefundLogic {
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return &RefundLogic{
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ctx: ctx,
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svcCtx: svcCtx,
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Logger: logx.WithContext(ctx),
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}
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}
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func (l *RefundLogic) Refund(in *payment.RefundReq) (*payment.Response, error) {
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if in == nil || in.OrderSn == utils.StringEmpty || in.Amount == utils.StringEmpty {
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return failResponse(utils.ErrorParams), nil
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}
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loginUser := utils.GetUserFromCtx(l.ctx)
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if loginUser.ID < utils.NumberOne {
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return failResponse(utils.ErrorNoLoginInfo), nil
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}
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channelCode := resolveChannel(in.Channel)
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client := resolveClient(utils.StringEmpty, loginUser.ClientCode)
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var row dao.OrderPayRow
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err := model.OrderModel{}.Init().GetOne(modelbase.Params{
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Eq: map[string]string{"order_sn": in.OrderSn},
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}, &row)
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if err != nil || row.Id < utils.NumberOne {
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return failResponse(utils.ErrorNotFund), nil
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}
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if row.Status != dao.PayStatusOk {
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return outResponse(utils.Fail, "订单未支付，无法退款"), nil
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}
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refundYuan, err := strconv.ParseFloat(in.Amount, 64)
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if err != nil || refundYuan <= 0 {
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return failResponse(utils.ErrorParams), nil
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}
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refundFen := yuanToFen(refundYuan)
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totalFen := yuanToFen(row.PayPrice)
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if refundFen > totalFen {
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return outResponse(utils.Fail, "退款金额不能大于支付金额"), nil
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}
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ch, err := channel.Get(channelCode, client)
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if err != nil {
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return outResponse(utils.Fail, err.Error()), nil
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}
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outTradeNo := row.OutTradeNo
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if outTradeNo == utils.StringEmpty {
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outTradeNo = row.OrderSn
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}
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outRefundNo := fmt.Sprintf("RF%s%d", row.OrderSn, time.Now().UnixNano())
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result, err := ch.Refund(l.ctx, &pkgpay.RefundRequest{
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OutTradeNo: outTradeNo,
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OutRefundNo: outRefundNo,
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Reason: in.Reason,
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RefundFen: refundFen,
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TotalFen: totalFen,
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Currency: "CNY",
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})
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if err != nil {
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l.Errorf("refund: %v", err)
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return outResponse(utils.Fail, err.Error()), nil
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}
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return okResponse(result), nil
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}
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