238 lines
7.6 KiB
Go
238 lines
7.6 KiB
Go
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package model
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import (
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"errors"
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"math/rand"
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"time"
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)
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const (
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LotteryPrizeTypePoint = 1 // 积分奖品
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LotteryPrizeTypeCoupon = 2 // 优惠券奖品
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LotteryPrizeTypePhysical = 3 // 实物奖品
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LotteryRecordStatusPending = 0 // 待处理
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LotteryRecordStatusDelivered = 1 // 已发放
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LotteryRecordStatusInProcess = 2 // 处理中
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LotteryRecordStatusFailed = 3 // 失败
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LotteryPrizeStatusEnabled = 1 // 启用奖品
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LotteryPrizeStatusDisabled = 2 // 禁用奖品
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LotteryPrizeTypeNone = 0 // 谢谢参与
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)
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// LotteryPrize 奖品信息表（抽奖）
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type LotteryPrize struct {
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Model
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Name string `json:"name"` // 奖品名称
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PrizeType int `json:"prize_type"` // 奖品类型：1-积分 2-优惠券 3-实物 0-谢谢参与
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PrizeValue int `json:"prize_value"` // 奖品值（积分数或券ID等）
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Level int `json:"level"` // 奖品等级，如1等奖、2等奖等
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Weight int `json:"weight"` // 抽奖权重
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Stock int `json:"stock"` // 剩余库存
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Status int `json:"status"` // 奖品状态：1-启用 2-禁用
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UnlockUserCount int `json:"unlock_user_count"` // 解锁条件：用户个人抽奖次数
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UnlockTotalCount int `json:"unlock_total_count"` // 解锁条件：所有用户总抽奖次数
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Images string `json:"images"` // 奖品图片
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}
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// LotteryRecord 抽奖记录
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type LotteryRecord struct {
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Model
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Uid uint `json:"uid"` // 用户ID
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PrizeId uint `json:"prize_id"` // 奖品ID
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PrizeName string `json:"prize_name"` // 奖品名称
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PrizeType int `json:"prize_type"` // 奖品类型
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PrizeLevel int `json:"prize_level"` // 奖品等级
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PrizeValue int `json:"prize_value"` // 奖品值（积分数或券ID等）
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Status int `json:"status"` // 状态：0-待处理 1-已发放 2-处理中 3-失败
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IsWin bool `json:"is_win"` // 是否中奖（false 表示“谢谢参与”等无奖项）
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Images string `json:"images" gorm:"-"` // 奖品图片
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}
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// LotteryPrizeOrder 抽奖奖品订单（包含用户收件信息、物流信息、发货状态）
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type LotteryPrizeOrder struct {
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Model
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RecordId uint `json:"record_id"` // 抽奖记录ID
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Uid uint `json:"uid"` // 用户ID
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Tel string `json:"tel"` // 用户手机号
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PrizeId uint `json:"prize_id"` // 奖品ID
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PrizeName string `json:"prize_name"` // 奖品名称
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// 用户提交的收货信息
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ReceiverName string `json:"receiver_name"` // 收件人
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ReceiverPhone string `json:"receiver_phone"` // 收件人手机号
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ReceiverAddr string `json:"receiver_addr"` // 收件地址
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// 发货信息
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LogisticsCompany string `json:"logistics_company"` // 快递公司
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LogisticsNumber string `json:"logistics_number"` // 快递单号
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ShippedAt time.Time `json:"shipped_at"` // 发货时间
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ReceivedAt time.Time `json:"received_at"` // 收货时间
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Status int `json:"status"` // 发货状态：0-待发货 1-已发货 2-已收货 3-取消
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}
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// LotteryStats 抽奖统计表
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type LotteryStats struct {
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Model
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TotalDraw uint `json:"total_draw"` // 总抽奖数
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}
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// LotteryWhiteList 抽奖白名单表
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type LotteryWhiteList struct {
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Model
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Uid uint `json:"uid"` // 用户ID
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DrawNumber uint `json:"draw_number"` // 第几次抽奖命中（如第3次）
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PrizeID uint `json:"prize_id"` // 奖品ID（外键指向 LotteryPrize）
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}
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type LotteryDrawResponse struct {
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PrizeID int `json:"prize_id"` // 奖品id
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PrizeName string `json:"prize_name"` // 奖品名称
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PrizeLevel int `json:"prize_level"` // 奖品等级
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Message string `json:"message"` // 中奖提示信息
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}
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type LotteryPrizeQuery struct {
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PageNum int `json:"page_num"`
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PageSize int `json:"page_size"`
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}
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type LotteryPrizePageResponse struct {
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Count uint32 `json:"count"` // 奖品总数
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PageNum int `json:"page_num"` // 当前页码
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List []LotteryPrize `json:"list"` // 奖品列表
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}
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type LotteryRecordQuery struct {
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PageNum int `json:"page_num"`
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PageSize int `json:"page_size"`
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WinStatus int `json:"win_status"` // 新增字段：0=全部，1=已中奖，2=未中奖
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}
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type LotteryRecordPageResponse struct {
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Count uint32 `json:"count"` // 总记录数
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PageNum int `json:"page_num"` // 当前页码
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List []LotteryRecord `json:"list"` // 抽奖记录列表
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}
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func DrawFromDatabasePrizes(prizes []LotteryPrize, userDrawCount, globalDrawCount int) (LotteryPrize, error) {
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var available []LotteryPrize
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totalWeight := 0
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for _, p := range prizes {
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// 同时满足两个解锁条件才可参与抽奖
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if userDrawCount >= p.UnlockUserCount && globalDrawCount >= p.UnlockTotalCount {
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available = append(available, p)
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totalWeight += p.Weight
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}
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}
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if totalWeight == 0 {
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return LotteryPrize{}, errors.New("无可抽奖奖品")
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}
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r := rand.Intn(totalWeight)
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acc := 0
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for _, p := range available {
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acc += p.Weight
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if r < acc {
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return p, nil
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}
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}
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return LotteryPrize{}, errors.New("抽奖失败")
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}
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func getUnlockDrawCount(level int) int {
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switch level {
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case 1:
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return 5000
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case 2:
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return 2000
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case 3:
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return 1000
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case 4:
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return 500
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default:
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return 0
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}
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}
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// IncrementTotalDraw 更新总抽奖数
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func IncrementTotalDraw() error {
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return DB.Exec("UPDATE lottery_stats SET total_draw = total_draw + 1 WHERE id = 1").Error
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}
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// GetLotteryDrawStats 查询某个用户的抽奖次数和全站总抽奖次数
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func GetLotteryDrawStats(uid uint32) (userDrawCount int, totalDrawCount int, err error) {
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// 查询用户抽奖次数
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err = DB.Model(&LotteryRecord{}).
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Where("uid = ?", uid).
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Count(&userDrawCount).Error
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if err != nil {
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return
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}
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// 查询总抽奖次数（从 lottery_stats 表）
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var stats LotteryStats
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err = DB.First(&stats).Error
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if err != nil {
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return
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}
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totalDrawCount = int(stats.TotalDraw)
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return
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}
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type RecentWinnersQuery struct {
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Limit int `json:"limit"` // 期望获取的记录数
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}
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type RecentWinnersResponse struct {
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Count uint32 `json:"count"` // 实际中奖总数
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List []LotteryRecord `json:"list"` // 最近中奖记录列表
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}
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type SubmitDeliveryRequest struct {
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RecordId uint `json:"record_id" binding:"required"` // 抽奖记录ID，必填
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ReceiverName string `json:"receiver_name" binding:"required"` // 收件人姓名，必填
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ReceiverPhone string `json:"receiver_phone" binding:"required"` // 收件人手机号，必填
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ReceiverAddr string `json:"receiver_addr" binding:"required"` // 收件人地址，必填
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}
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type ConfirmReceiptRequest struct {
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RecordId uint `json:"record_id" binding:"required"` // 抽奖记录ID，必填
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}
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type TodayDrawCountResponse struct {
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DrawCount int `json:"draw_count"` // 今日抽奖次数
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}
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type GetLotteryPrizeOrderDetailRequest struct {
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OrderID uint `json:"order_id" binding:"required"` // 奖品订单ID
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}
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type LotteryPrizeOrderDetailResponse struct {
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LotteryPrizeOrder
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// 用户信息
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Nickname string `json:"nickname"` // 用户昵称
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Tel string `json:"tel"` // 用户手机号
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MemberLevel uint32 `json:"member_level"` // 当前会员等级
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StoreName string `json:"store_name"` // 所属门店
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// 奖品信息（扩展字段）
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PrizeType int `json:"prize_type"` // 奖品类型
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PrizeLevel int `json:"prize_level"` // 奖品等级
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PrizeValue int `json:"prize_value"` // 奖品值
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Images string `json:"images"` // 奖品图片
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}
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