chenlin
9c72b52723
2、修改商品资料前端入参分页错误时，接口报错的缺陷； 3、修复串码商品（手动添加）零售退货订单审核失败的缺陷； 4、优惠券增加商品编号字段； 5、取消会员时扣减积分，尊享会员优惠券更新为过期状态；
268 lines
8.1 KiB
Go
268 lines
8.1 KiB
Go
package models
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import (
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"errors"
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"fmt"
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orm "go-admin/common/global"
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"go-admin/logger"
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"gorm.io/gorm"
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"time"
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)
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const (
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VmEventBuyGoods = "buy_goods" // 购买商品积分抵扣
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VmEventBuyGoodsReject = "buy_goods_reject" // 购买商品积分抵扣取消
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VmEventOpenMember = "open_member" // 开通会员奖励
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VmEventInvite1Member = "invite_1_member" // 邀请会员奖励
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VmEventInvite2Member = "invite_2_member" // 邀请会员奖励
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VmEventUserShareCard = "user_share_card" // 用户共享卡收益
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VmEventAttendance = "attendance" // 连续签到获取积分
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VmEventErpOrderSale = "erp_order_sale" // 零售销售获得积分
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VmEventErpOrderReject = "erp_order_reject" // 零售退货扣除积分
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VmEventExpired = "vm_expired" // 积分过期扣减
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VmEventCancelMember = "cancel_member" // 取消租卡会员
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VmEventCancelPrivilegeMember = "cancel_privilege_member" // 取消尊享会员
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)
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// 用户积分
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// gen:qs
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//
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//go:generate goqueryset -in user_vm.go
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type UserVm struct {
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Model
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Uid uint32 `json:"uid" gorm:"column:uid;unique_index"`
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Vm uint32 `json:"vm"`
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//UserVm uint32 `json:"user_vm"`
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}
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// 用户积分-变动记录
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// gen:qs
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type UserVmRecord struct {
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Model
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Uid uint32 `json:"uid" gorm:"column:uid;unique_index"` // 用户ID
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BeforeVm uint32 `json:"before_vm"` // 变动前
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AfterVm uint32 `json:"after_vm"` // 变动后
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Alter int `json:"alter"` // 数值
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Event string `json:"event" gorm:"type:varchar(100)"` // 事件
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Describe string `json:"describe" gorm:"type:text"` // 描述
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ErpOrderId uint32 `json:"erp_order_id" gorm:"index"` // 零售订单id
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BillSn string `json:"bill_sn"` // 零售订单编号
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ExpiryDate time.Time `json:"expiry_date"` // 积分过期时间
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UsedVm int `json:"used_vm"` // 已使用积分
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ExpiryVm int `json:"expiry_vm" gorm:"-"` // 即将过期的积分
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User *UserInfo `json:"user,omitempty" gorm:"-"` // 用户信息
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}
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func UserVmUpdate(gdb *gorm.DB, billSn string, uid uint32, amount int, event, describe string) error {
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var userVm UserVm
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err := orm.Eloquent.Table("user_vm").
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Where("uid=?", uid).Find(&userVm).Error
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if err != nil {
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logger.Error("share card retrieve cards err:", logger.Field("err", err))
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return err
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}
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// 变动前的积分
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nBeforeVm := userVm.Vm
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flag := false
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begin := gdb
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if gdb == nil {
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flag = true
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begin = orm.Eloquent.Begin()
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}
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if userVm.Uid == 0 { // 没有积分记录
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if amount < 0 {
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begin.Rollback()
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logger.Error("amount lt 0")
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return errors.New("amount lt 0")
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}
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userVm = UserVm{
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Uid: uid,
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Vm: uint32(amount),
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}
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err = begin.Create(&userVm).Error
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if err != nil {
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begin.Rollback()
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logger.Error("err:", logger.Field("err", err))
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return err
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}
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} else {
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// 如果用户积分不够抵扣，则扣到0为止
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if int(userVm.Vm)+amount <= 0 {
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sql := fmt.Sprintf("UPDATE user_vm SET vm = ? WHERE uid=?")
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err = begin.Exec(sql, 0, uid).Error
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} else {
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sql := fmt.Sprintf("UPDATE user_vm SET vm = vm+? WHERE uid=?")
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err = begin.Exec(sql, amount, uid).Error
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}
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if err != nil {
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begin.Rollback()
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logger.Error("err:", logger.Field("err", err))
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return err
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}
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}
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vmRecord := &UserVmRecord{
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Uid: uid,
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BeforeVm: uint32(nBeforeVm),
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AfterVm: 0, // 默认值为 0
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Alter: amount,
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Event: event,
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Describe: describe,
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BillSn: billSn,
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}
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if newValue := int(userVm.Vm) + amount; newValue > 0 {
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vmRecord.AfterVm = uint32(newValue)
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}
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// 如果是正积分，则记录该订单对应积分的有效时间
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if amount > 0 {
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vmRecord.ExpiryDate = time.Now().AddDate(1, 0, 0)
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if event == VmEventBuyGoodsReject { // 使用积分购买商品后取消
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err = RefundPoints(gdb, uid, amount)
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if err != nil {
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begin.Rollback()
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logger.Error("err:", logger.Field("err", err))
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return err
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}
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}
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} else { // 如果是负积分，则记录积分使用情况；优先扣除最早获得的积分
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if event == VmEventBuyGoods || event == VmEventErpOrderReject { // 使用积分购买商品，或者零售退货扣除积分
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err = UsePoints(gdb, uid, -amount)
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if err != nil {
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begin.Rollback()
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logger.Error("err:", logger.Field("err", err))
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return err
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}
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}
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}
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err = begin.Create(vmRecord).Error
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if err != nil {
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begin.Rollback()
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logger.Error("err:", logger.Field("err", err))
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return err
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}
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if flag {
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err = begin.Commit().Error
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if err != nil {
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begin.Rollback()
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logger.Error("err:", logger.Field("err", err))
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return err
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}
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}
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return nil
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}
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// GetUserAvailablePointsRecords 查找用户的所有可用积分记录，按时间排序
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func GetUserAvailablePointsRecords(uid uint32) []UserVmRecord {
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var userVmRecord []UserVmRecord
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err := orm.Eloquent.Table("user_vm_record").Where("uid = ? and event in (?)",
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uid, []string{VmEventOpenMember, VmEventInvite1Member, VmEventInvite2Member, VmEventUserShareCard,
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VmEventAttendance, VmEventErpOrderSale}).
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Order("created_at DESC").
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Find(&userVmRecord).Error
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if err != nil {
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logger.Error("get user_vm_record err:", logger.Field("err", err))
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return []UserVmRecord{}
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}
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return userVmRecord
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}
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func UsePoints(gdb *gorm.DB, uid uint32, points int) error {
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// 1. 查找用户的所有可用积分记录，按时间排序
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records := GetUserAvailablePointsRecords(uid)
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remaining := points
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for _, record := range records {
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available := record.Alter - record.UsedVm // 计算该订单剩余可用积分
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if available >= remaining {
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// 该订单的剩余积分足够
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record.UsedVm += remaining
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// 更新积分记录
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err := gdb.Omit("created_at").Save(record).Error
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if err != nil {
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logger.Error("update user_vm_record err:", logger.Field("err", err))
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return err
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}
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break
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} else {
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// 该订单的剩余积分不足，全部使用，继续扣减下一条记录
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record.UsedVm = record.Alter
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remaining -= available
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// 更新积分记录
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err := gdb.Omit("created_at").Save(record).Error
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if err != nil {
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logger.Error("update user_vm_record err:", logger.Field("err", err))
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return err
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}
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}
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}
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return nil
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}
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// GetUserUsedPointsRecords 查找用户的已使用积分记录，按使用时间倒序排序
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func GetUserUsedPointsRecords(uid uint32) []UserVmRecord {
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var userVmRecord []UserVmRecord
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err := orm.Eloquent.Table("user_vm_record").Where("uid = ? and event in (?)",
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uid, []string{VmEventOpenMember, VmEventInvite1Member, VmEventInvite2Member, VmEventUserShareCard,
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VmEventAttendance, VmEventErpOrderSale}).
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Where("used_vm != 0").
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Order("created_at DESC").
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Find(&userVmRecord).Error
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if err != nil {
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logger.Error("get user_vm_record err:", logger.Field("err", err))
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return []UserVmRecord{}
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}
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return userVmRecord
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}
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// RefundPoints 查找用户的已使用积分记录，按使用时间倒序排序
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func RefundPoints(gdb *gorm.DB, uid uint32, points int) error {
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// 1. 查找用户的已使用积分记录，按使用时间倒序排序
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usedRecords := GetUserUsedPointsRecords(uid)
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remaining := points
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for _, record := range usedRecords {
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used := record.UsedVm // 获取该订单已使用的积分
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if used >= remaining {
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// 该订单已使用的积分足够返还
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record.UsedVm -= remaining
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// 更新积分记录
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err := gdb.Omit("created_at").Save(record).Error
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if err != nil {
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logger.Error("RefundPoints update user_vm_record err:", logger.Field("err", err))
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return err
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}
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break
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} else {
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// 该订单已使用的积分不足以完全返还，全部返还后继续处理下一条记录
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record.UsedVm = 0
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remaining -= used
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// 更新积分记录
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err := gdb.Omit("created_at").Save(record).Error
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if err != nil {
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logger.Error("RefundPoints update user_vm_record err:", logger.Field("err", err))
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return err
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}
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}
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}
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return nil
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}
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