package model

import (
	"gorm.io/gorm"
	"knowledge/global"
	"time"
)

// Label 标签表
type Label struct {
	LabelId    int64  `gorm:"column:label_id;type:bigint(19);primary_key;comment:主键id" json:"label_id"`
	LabelName  string `gorm:"column:label_name;type:varchar(255);comment:标签名称" json:"label_name"`
	ParentId   int64  `gorm:"column:parent_id;type:bigint(19);comment:父级ID（0表示一级）" json:"parent_id"`
	LabelLevel int    `gorm:"column:label_level;type:tinyint(1);default:1;comment:级别（1:1级 2:2级 3:3级）" json:"label_level"`
	Model
}

func (m *Label) TableName() string {
	return "kb_label"
}

func (m *Label) BeforeCreate(tx *gorm.DB) error {
	if m.LabelId == 0 {
		m.LabelId = global.Snowflake.Generate().Int64()
	}

	m.CreatedAt = LocalTime(time.Now())
	tx.Statement.SetColumn("CreatedAt", m.CreatedAt)

	m.UpdatedAt = LocalTime(time.Now())
	tx.Statement.SetColumn("UpdatedAt", m.UpdatedAt)

	return nil
}