package entity

import (
	"github.com/gocql/gocql"
	"github.com/google/uuid"
)

// Message 對應 Cassandra 的 messages_by_room 表
// Primary Key: (room_id, bucket_day)
// Clustering Key: ts DESC
type Message struct {
	RoomID    gocql.UUID `db:"room_id" partition_key:"true"`
	BucketDay string     `db:"bucket_day" partition_key:"true"` // yyyyMMdd
	TS        int64      `db:"ts" clustering_key:"true"`        // timestamp
	UID       string     `db:"uid"`
	Content   string     `db:"content"`
	MsgID     uuid.UUID  `db:"msg_id"`
}

// TableName 返回表名
func (m Message) TableName() string {
	return "messages_by_room"
}