fusenapi/server/home-user-auth/internal/logic/userordercancellogic.go

package logic

import (
	"errors"
	"fusenapi/constants"
	"fusenapi/model/gmodel"
	"fusenapi/utils/auth"
	"fusenapi/utils/basic"
	"time"

	"context"

	"fusenapi/server/home-user-auth/internal/svc"
	"fusenapi/server/home-user-auth/internal/types"
	handlerUtils "fusenapi/utils/handler"

	"github.com/zeromicro/go-zero/core/logx"
	"gorm.io/gorm"
)

type UserOrderCancelLogic struct {
	logx.Logger
	ctx    context.Context
	svcCtx *svc.ServiceContext
}

func NewUserOrderCancelLogic(ctx context.Context, svcCtx *svc.ServiceContext) *UserOrderCancelLogic {
	return &UserOrderCancelLogic{
		Logger: logx.WithContext(ctx),
		ctx:    ctx,
		svcCtx: svcCtx,
	}
}

func (l *UserOrderCancelLogic) UserOrderCancel(req *types.UserOrderCancelReq, userinfo *auth.UserInfo) (resp *basic.Response) {
	// 返回值必须调用Set重新返回, resp可以空指针调用 resp.SetStatus(basic.CodeOK, data)
	// userinfo 传入值时, 一定不为null

	if userinfo == nil || userinfo.UserId == 0 {
		return resp.SetStatusWithMessage(basic.CodeDbRecordNotFoundErr, "order not found")
	}

	//查询订单信息
	orderModel := gmodel.NewFsOrderModel(l.svcCtx.MysqlConn)
	orderInfo, err := orderModel.FindOne(l.ctx, userinfo.UserId, req.ID)
	if err != nil {
		if errors.Is(err, gorm.ErrRecordNotFound) {
			return resp.SetStatusWithMessage(basic.CodeDbRecordNotFoundErr, "the order is not exists")
		}
		logx.Error(err)
		return resp.SetStatus(basic.CodeServiceErr, "failed to get order info")
	}

	// 判断订单状态
	var notCancelStatusMap = make(map[constants.Order]struct{}, 3)
	notCancelStatusMap[constants.STATUS_NEW_NOT_PAY] = struct{}{}
	notCancelStatusMap[constants.STATUS_NEW_PART_PAY] = struct{}{}
	notCancelStatusMap[constants.STATUS_NEW_PAY_COMPLETED] = struct{}{}
	_, ok := notCancelStatusMap[constants.Order(*orderInfo.Status)]
	if !ok {
		return resp.SetStatusWithMessage(basic.CodeOrderNotCancelledErr, "the order status not cancle")
	}

	var cancelTime int64 = time.Now().Unix() - (*orderInfo.Ctime + int64(constants.CANCLE_ORDER_EXPIRE))
	// 第一次支付成功后48小时后不能进行取消操作
	if orderInfo.IsPayCompleted != nil && cancelTime > 0 {
		return resp.SetStatusWithMessage(basic.CodeOrderNotCancelledErr, "The current order cannot be cancelled")
	}

	// 修改订单--取消状态和取消原因
	*orderInfo.Status = int64(constants.STATUS_NEW_CANCEL)
	*orderInfo.IsCancel = 1
	orderInfo.RefundReasonId = &req.RefundReasonId
	orderInfo.RefundReason = &req.RefundReason

	var nowTime = time.Now().Unix()
	var payList []handlerUtils.PayInfo
	// 事务处理
	err = orderModel.Trans(l.ctx, func(ctx context.Context, connGorm *gorm.DB) (err error) {
		// 修改订单信息
		orderModelTS := gmodel.NewFsOrderModel(connGorm)
		err = orderModelTS.Update(ctx, orderInfo)
		if err != nil {
			return err
		}
		// 新增退款记录
		var isRefund int64 = 0
		refundReasonModelTS := gmodel.NewFsRefundReasonModel(connGorm)
		refundReasonModelTS.CreateOrUpdate(ctx, &gmodel.FsRefundReason{
			IsRefund:       &isRefund,
			RefundReasonId: &req.RefundReasonId,
			RefundReason:   &req.RefundReason,
			OrderId:        &orderInfo.Id,
			CreatedAt:      &nowTime,
		})
		// 退款申请
		// 退款申请--查询支付信息
		fsPayModelTS := gmodel.NewFsPayModel(connGorm)
		rbFsPay := fsPayModelTS.RowSelectBuilder(nil).Where("order_number = ?", orderInfo.Sn).Where("pay_status =?", constants.PAYSTATUS_SUCCESS).Where("is_refund =?", 0)
		payInfoList, err := fsPayModelTS.FindAll(ctx, rbFsPay, nil, "")
		if err != nil {
			return err
		}
		for _, payInfo := range payInfoList {
			var key string
			if *payInfo.PaymentMethod == int64(constants.PAYMETHOD_STRIPE) {
				key = l.svcCtx.Config.PayConfig.Stripe.Key
			}
			payList = append(payList, handlerUtils.PayInfo{
				TradeNo:       *payInfo.TradeNo,
				PaymentMethod: *payInfo.PaymentMethod,
				Key:           key,
			})
		}
		return nil
	})
	// 退款申请--调取第三方接口发起退款
	handlerUtils.PayRefundHandler(&handlerUtils.PayRefundHandlerReq{
		PayInfoList: payList,
	})
	if err != nil {
		logx.Error(err)
		return resp.SetStatusWithMessage(basic.CodeOrderCancelledNotOk, "the order cancle failed")
	}

	return resp.SetStatus(basic.CodeOK)
}