state

type MessageEvent struct {
	Id        string    `json:"id"`
	MessageId string    `json:"messageId"`
	DID       string    `json:"did"`
	Type      string    `json:"type"`
	EventTime time.Time `json:"added"`
}

type MessageState struct {
	Id         string         `json:"id"`
	Type       string         `json:"type"`
	Recipients []string       `json:"recipients"`
	Data       []byte         `json:"data"`
	Transport  string         `json:"transport"`
	GroupId    string         `json:"group_id"`
	Events     []MessageEvent `json:"events"`
	Added      time.Time      `json:"added"`
}

type MessagesState interface {
	SaveMessage(*MessageState) error
	SaveMessageEvent(*MessageEvent) error
	ListMessages(*MessageState) ([]*MessageState, error)
	FindMessage(id string) (*MessageState, error)
	DeleteMessage(id string) error
	DeleteMessages(groupId string) error
}