// Package entity holds conversation domain types.
package entity

// Type is persisted as conversations.type.
type Type int

const (
	TypeP2P   Type = 1
	TypeGroup Type = 2
)

func (t Type) Valid() bool {
	return t == TypeP2P || t == TypeGroup
}

// Conversation is a P2P or group chat. LastMsgID is the Snowflake cursor, not ConversationSeq.
type Conversation struct {
	ID        int64
	Type      Type
	LastMsgID int64
	LastMsgAt int64
}

// DialogFace is the viewer-relative identity of one conversation.
// PeerID is the other member of a P2P chat. GroupID is groups.id, not the conversation id.
type DialogFace struct {
	ConversationID int64
	Type           Type
	PeerID         int64
	GroupID        int64
	LastReadMsgID  int64
}