package bannermodel

import (
	"sync"
	"time"

	"github.com/qit-team/snow-core/db"
)

var (
	once sync.Once
	m    *bannerModel
)
/**
 * Banner实体
 */
type Banner struct {
	Id        int64     `xorm:"pk autoincr"` //注：使用getOne 或者ID() 需要设置主键
	Pid       int
	Title     string
	ImageUrl  string    `xorm:"'img_url'"`
	Url       string
	Status    string
	CreatedAt time.Time
	UpdatedAt time.Time
	DeletedAt time.Time `xorm:"deleted"` //此特性会激发软删除
}

/**
 * 表名规则
 * @wiki http://gobook.io/read/github.com/go-xorm/manual-zh-CN/chapter-02/3.tags.html
 */
func (m *Banner) TableName() string {
	return "banner"
}

/**
 * 私有化，防止被外部new
 */
type bannerModel struct {
	db.Model //组合基础Model，集成基础Model的属性和方法
}

//单例模式
func GetInstance() *bannerModel {
	once.Do(func() {
		m = new(bannerModel)
		//m.DiName = "" //设置数据库实例连接，默认db.SingletonMain
	})
	return m
}

func (m *bannerModel) GetListByPid(pid int, limits ...int) (banners []*Banner, err error) {
	banners = make([]*Banner, 0)
	err = m.GetList(&banners, "pid = ?", []interface{}{pid}, limits)
	return
}