/// <reference types="socket.io" />
import { IEventAggregator } from '@essential-projects/event_aggregator_contracts';
import { BaseSocketEndpoint } from '@essential-projects/http_node';
import { IIdentityService } from '@essential-projects/iam_contracts';
import { APIs } from '@process-engine/management_api_contracts';
export declare class EmptyActivitySocketEndpoint extends BaseSocketEndpoint {
    private connections;
    private notificationService;
    private eventAggregator;
    private identityService;
    private endpointSubscriptions;
    private userSubscriptions;
    constructor(eventAggregator: IEventAggregator, identityService: IIdentityService, notificationService: APIs.INotificationManagementApi);
    get namespace(): string;
    initializeEndpoint(socketIo: SocketIO.Namespace): Promise<void>;
    dispose(): Promise<void>;
    /**
     * Creates a number of Subscriptions for globally published events.
     * These events will be published for every user connected to the socketIO
     * instance.
     *
     * @async
     * @param socketIoInstance The socketIO instance for which to create the
     *                         subscriptions.
     */
    private createSocketScopeNotifications;
    /**
     * Creates a number of Subscriptions for events that are only published for
     * certain identities.
     * An example would be "EmptyActivity started by User with ID 123456".
     *
     * @async
     * @param socket   The socketIO client on which to create the subscriptions.
     * @param identity The identity for which to create the subscriptions
     */
    private createUserScopeNotifications;
    /**
     * Clears out all Subscriptions for the given identity.
     * Should only be used when a client disconnects.
     *
     * @async
     * @param identity The identity for which to remove the Subscriptions.
     */
    private clearUserScopeNotifications;
}