package model

import "time"

// MessageDelete maps table message_deletes. Business unique key is (user_id, msg_id).
type MessageDelete struct {
	ID             int64     `gorm:"column:id;primaryKey;autoIncrement;comment:行 id，表内自增，仅内部用；业务唯一键是 (user_id, msg_id)"`
	UserID         int64     `gorm:"column:user_id;comment:删除者 user_id，仅该用户历史不可见"`
	MsgID          int64     `gorm:"column:msg_id;comment:被删除的 Snowflake MsgId"`
	ConversationID int64     `gorm:"column:conversation_id;comment:所属会话，便于按会话过滤"`
	CreatedAt      time.Time `gorm:"column:created_at;comment:删除时间"`
}

func (MessageDelete) TableName() string { return "t_message_deletes" }