import NativeEvents from '../../utils/NativeEvents';
import type { Conference, UnsubscribeFunction, ParticipantInvited } from '../conference/models';
import type { ConferenceCreatedEventType, ConferenceStatusEventType, ConferenceEndedEventType, InvitationReceivedEventType, ParticipantJoinedEventType, ParticipantLeftEventType, ActiveParticipantsEventType } from './events';
import type { Subscription } from './models';
/**
 * The NotificationService allows inviting participants to a conference and subscribing to and unsubscribing from notifications.
 */
export declare class NotificationService {
    /** @internal */
    _nativeModule: any;
    /** @internal */
    _nativeEvents: NativeEvents;
    /**
     * Subscribes to the specified notifications. This method is supported in SDK 3.8 and later.
     * @param events An array of the subscribed subscription types.
     */
    subscribe(events: Subscription[]): Promise<void>;
    /**
     * Unsubscribes from the specified notifications. This method is supported in SDK 3.8 and later.
     * @param events An array of the subscribed subscription types.
     */
    unsubscribe(events: Subscription[]): Promise<void>;
    /**
     * Declines the conference invitation.
     * @param conference The conference object.
     */
    decline(conference: Conference): Promise<void>;
    /**
     * Notifies conference participants about a conference invitation.
     * @param conference The conference object.
     * @param participants Information about the invited application users.
     */
    invite(conference: Conference, participants: ParticipantInvited[]): Promise<void>;
    /**
     * Adds a listener to the invitation received event.
     * @param handler An event callback function.
     * @returns A function that unsubscribes from event listeners.
     */
    onInvitationReceived(handler: (data: InvitationReceivedEventType) => void): UnsubscribeFunction;
    /**
     * Adds a listener to the conference status event. This API is supported in SDK 3.8 and later.
     * @param handler An event callback function.
     * @returns A function that unsubscribes from event listeners.
     */
    onConferenceStatus(handler: (data: ConferenceStatusEventType) => void): UnsubscribeFunction;
    /**
     * Adds a listener to the conference created event. This API is supported in SDK 3.8 and later.
     * @param handler An event callback function.
     * @returns A function that unsubscribes from event listeners.
     */
    onConferenceCreated(handler: (data: ConferenceCreatedEventType) => void): UnsubscribeFunction;
    /**
     * Adds a listener to the conference ended event. This API is supported in SDK 3.8 and later.
     * @param handler An event callback function.
     * @returns A function that unsubscribes from event listeners.
     */
    onConferenceEnded(handler: (data: ConferenceEndedEventType) => void): UnsubscribeFunction;
    /**
     * Adds a listener to the participant joined event. This API is supported in SDK 3.8 and later.
     * @param handler An event callback function.
     * @returns A function that unsubscribes from event listeners.
     */
    onParticipantJoined(handler: (data: ParticipantJoinedEventType) => void): UnsubscribeFunction;
    /**
     * Adds a listener to the participant left event. This API is supported in SDK 3.8 and later.
     * @param handler An event callback function.
     * @returns A function that unsubscribes from event listeners.
     */
    onParticipantLeft(handler: (data: ParticipantLeftEventType) => void): UnsubscribeFunction;
    /**
     * Adds a listener to the participant active event. This API is supported in SDK 3.8 and later.
     * @param handler An event callback function.
     * @returns A function that unsubscribes from event listeners.
     */
    onActiveParticipants(handler: (data: ActiveParticipantsEventType) => void): UnsubscribeFunction;
}
declare const _default: NotificationService;
export default _default;