package entities

import (
	"gorm.io/gorm"
	"gorm.io/plugin/optimisticlock"
	"time"
)

// FeatureContent 栏目内容表（文章、视频、课程）
type FeatureContent struct {
	ID         uint                   `json:"id"          xml:"id"          gorm:"primaryKey;not null;comment:内容编号"`
	FeatureID  uint                   `json:"feature_id"  xml:"feature_id"  gorm:"comment:所属栏目编号"`
	CategoryID *uint                  `json:"category_id" xml:"category_id" gorm:"default:null;comment:所属分类编号"`
	Type       string                 `json:"type"        xml:"type"        gorm:"not null;comment:内容类型"`
	Title      string                 `json:"title"       xml:"title"       gorm:"size:100;not null;comment:内容标题"`
	Intro      string                 `json:"intro"       xml:"intro"       gorm:"size:250;comment:内容简介"`
	Version    optimisticlock.Version `json:"-"           xml:"-"           gorm:"comment:乐观锁"`
	CreatedAt  time.Time              `json:"create_time" xml:"create_time" gorm:"<-:false;comment:创建时间"`
	UpdatedAt  time.Time              `json:"update_time" xml:"update_time" gorm:"<-:false;comment:更新时间"`
	DeletedAt  gorm.DeletedAt         `json:"-"           xml:"-"           gorm:"comment:删除时间"`

	Chapters []*FeatureContentChapter `json:"chapters" xml:"chapters" gorm:"foreignKey:ContentID"`
	Details  []*FeatureContentDetail  `json:"details"  xml:"details"  gorm:"foreignKey:ContentID"`

	// 只有当该记录作为课程时才有效，所以这里需要 check
	Departments []*FeatureContent `json:"departments" xml:"departments" gorm:"many2many:company_course_to_department_relations"`
}