import { ITask } from "../models";
import { ConferenceParticipant } from "../state/Conferences/ConferenceParticipant";
/**
 * @package
 * @typedef VoiceActionPayload
 * @property {ITask} [task] Task
 * @property {string} [sid] taskSid
 * @memberof Actions
 */
export interface VoiceActionPayload {
    task?: ITask;
    sid?: string;
}
/**
 * Hold Call Action Payload
 *
 * @typedef HoldCallActionPayload
 * @property {string} [participantCallSid] Sid of the participant within the call
 * @property {string} [holdMusicUrl] Request URL to fetch the hold music from
 * @property {string} [holdMusicMethod] Request method to fetch the hold music with
 * @memberof Actions
 */
export interface HoldCallActionPayload extends VoiceActionPayload {
    participantCallSid?: Pick<ConferenceParticipant, "callSid">;
    holdMusicUrl?: string;
    holdMusicMethod?: string;
}
/**
 * Unhold Call Action Payload
 *
 * @typedef UnholdCallActionPayload
 * @property {string} [participantCallSid] Sid of the participant within the call
 * @memberof Actions
 */
export interface UnholdCallActionPayload extends VoiceActionPayload {
    participantCallSid?: Pick<ConferenceParticipant, "callSid">;
}
export interface StartExternalWarmTransferPayload extends VoiceActionPayload {
    callerId: string;
    phoneNumber: string;
}
export declare class VoiceActions {
    static registerActions(): void;
    private static toggleMute;
    private static holdCall;
    private static unholdCall;
    private static sendTrackingTaskCompletionEvent;
    private static hangupCall;
    private static endConferenceForAll;
    private static startExternalWarmTransfer;
    private static updateVoiceActionPayload;
}
export declare const isValidVoiceActionPayload: (task: ITask) => (payload: any) => boolean;