package entities

import (
	"time"

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

// LinkStatus 主从关系状态
type LinkStatus string

const (
	LinkStatusActive  LinkStatus = "active"
	LinkStatusRevoked LinkStatus = "revoked"
)

// UserSubordinateLink 主账号与下属关系
type UserSubordinateLink struct {
	ID         string `gorm:"primaryKey;type:varchar(36)" json:"id" comment:"唯一标识"`
	ParentUserID string `gorm:"type:varchar(36);not null;index:idx_parent,priority:1" json:"parent_user_id" comment:"主账号用户ID"`
	ChildUserID  string `gorm:"type:varchar(36);not null;uniqueIndex" json:"child_user_id" comment:"子账号用户ID(唯一)"`
	InvitationID *string `gorm:"type:varchar(36);index" json:"invitation_id,omitempty" comment:"关联的邀请ID"`
	Status     LinkStatus `gorm:"type:varchar(20);not null;default:active" json:"status" comment:"状态"`

	CreatedAt time.Time      `gorm:"autoCreateTime" json:"created_at"`
	UpdatedAt time.Time      `gorm:"autoUpdateTime" json:"updated_at"`
	DeletedAt gorm.DeletedAt `gorm:"index" json:"-"`
}

// TableName 表名
func (UserSubordinateLink) TableName() string {
	return "user_subordinate_links"
}

// BeforeCreate 生成ID
func (l *UserSubordinateLink) BeforeCreate(tx *gorm.DB) error {
	if l.ID == "" {
		l.ID = uuid.New().String()
	}
	return nil
}