package entities

import (
	"time"

	"github.com/google/uuid"
	"gorm.io/gorm"
)

// ProductPackageItem 产品组合包项目
type ProductPackageItem struct {
	ID        string `gorm:"primaryKey;type:varchar(36)"`
	PackageID string `gorm:"type:varchar(36);not null;index" comment:"组合包产品ID"`
	ProductID string `gorm:"type:varchar(36);not null;index" comment:"子产品ID"`
	SortOrder int    `gorm:"default:0" comment:"排序"`

	// 关联关系
	Package *Product `gorm:"foreignKey:PackageID" comment:"组合包产品"`
	Product *Product `gorm:"foreignKey:ProductID" comment:"子产品"`

	CreatedAt time.Time      `gorm:"autoCreateTime"`
	UpdatedAt time.Time      `gorm:"autoUpdateTime"`
	DeletedAt gorm.DeletedAt `gorm:"index"`
}

// BeforeCreate GORM钩子：创建前自动生成UUID
func (ppi *ProductPackageItem) BeforeCreate(tx *gorm.DB) error {
	if ppi.ID == "" {
		ppi.ID = uuid.New().String()
	}
	return nil
}