import { PresenceMessage } from '../../constants';
import { DeepstreamConfig, DeepstreamServices, SocketWrapper, StateRegistry, Handler, SubscriptionRegistry, ConnectionListener } from '@deepstream/types';
/**
 * This class handles incoming and outgoing messages in relation
 * to deepstream presence. It provides a way to inform clients
 * who else is logged into deepstream
 */
export default class PresenceHandler extends Handler<PresenceMessage> implements ConnectionListener {
    private services;
    private metaData?;
    private localClients;
    private subscriptionRegistry;
    private connectedClients;
    constructor(config: DeepstreamConfig, services: DeepstreamServices, subscriptionRegistry?: SubscriptionRegistry, stateRegistry?: StateRegistry, metaData?: any | undefined);
    /**
    * The main entry point to the presence handler class.
    *
    * Handles subscriptions, unsubscriptions and queries
    */
    handle(socketWrapper: SocketWrapper, message: PresenceMessage): void;
    /**
    * Called whenever a client has succesfully logged in with a username
    */
    onClientConnected(socketWrapper: SocketWrapper): void;
    /**
    * Called whenever a client has disconnected
    */
    onClientDisconnected(socketWrapper: SocketWrapper): void;
    private handleQueryAll;
    /**
    * Handles finding clients who are connected and splicing out the client
    * querying for users
    */
    private handleQuery;
    /**
    * Alerts all clients who are subscribed to
    * PRESENCE_JOIN that a new client has been added.
    */
    private onClientAdded;
    /**
    * Alerts all clients who are subscribed to
    * PRESENCE_LEAVE that the client has left.
    */
    private onClientRemoved;
}