mh_server/model/history_browsing.go

package model

import (
	"github.com/codinl/go-logger"
)

//go:generate goqueryset -in history_browsing.go
// gen:qs
type HistoryBrowsing struct {
	Model

	Uid        uint64 `json:"uid" gorm:"index"` // 用户id
	GameCardId uint64 `json:"game_card_id"`     // 游戏卡id
}

func (*HistoryBrowsing) TableName() string {
	return "history_browsing"
}

func GetHistoryBrowsingList(uid uint32, page, pageSize int) ([]GameCard, uint32, error) {
	var (
		totalPage uint32
		historys  []HistoryBrowsing
		gameCards []GameCard = make([]GameCard, 0)
	)
	page -= 1
	if page < 0 {
		page = 0
	}

	// TODO 查看商品添加浏览记录

	querySet := NewHistoryBrowsingQuerySet(DB).UidEq(uint64(uid))
	count, err := querySet.Count()
	if err != nil {
		logger.Error("err:", err)
		return gameCards, 0, err
	}

	err = querySet.OrderDescByCreatedAt().Offset(page * pageSize).Limit(pageSize).All(&historys)
	if err != nil && err != RecordNotFound {
		logger.Error("err:", err)
		return gameCards, 0, err
	}
	gameIds := make([]uint32, 0, len(historys))
	for i, _ := range historys {
		gameIds = append(gameIds, uint32(historys[i].GameCardId))
	}
	if len(gameIds) > 0 {
		err := NewGameCardQuerySet(DB).IDIn(gameIds...).All(&gameCards)
		if err != nil {
			logger.Error("err:", err)
			return gameCards, 0, err
		}
	}

	totalPage = uint32(count/pageSize + 1)

	return gameCards, totalPage, nil
}

func HistoryBrowsingAdd(uid uint64, gameCardId uint64) error {
	querySet := NewHistoryBrowsingQuerySet(DB.Unscoped()).UidEq(uid)
	count, err := querySet.GameCardIdEq(gameCardId).Count()
	if err != nil {
		logger.Error("err:", err)
		return err
	}
	if count == 0 {
		historyBrowsing := &HistoryBrowsing{
			Uid:        uid,
			GameCardId: gameCardId,
		}
		err = historyBrowsing.Create(DB)
		if err != nil {
			logger.Error("err:", err)
			return err
		}
	}
	totalCount, err := querySet.Count()
	if err != nil {
		logger.Error("err:", err)
		return err
	}

	if totalCount > 150 {
		err := querySet.OrderAscByCreatedAt().Limit(50).Delete()
		if err != nil {
			logger.Error("err:", err)
			return err
		}
	}
	return nil
}