import z from 'zod';
import { CallingPublicKey } from './sfu/crypto';
export type Uint32 = number & {
    Uint32: never;
};
export type HexString = string & {
    HexString: never;
};
export declare function getRandomHexString(size: number): HexString;
/**
 * Calling IDs
 * ----------------------------------------------------------------------------
 */
/**
 * In multi-participant calls, the room id is the permanent ID
 * equivalent to an ACI. It comes from a shared secret owned by the clients.
 */
export type CallingRoomId = string & {
    RoomId: never;
};
/**
 * Ephemeral, generated by calling service.
 * Only used for group/adhoc calls.
 */
export type CallingEraId = HexString & {
    EraId: never;
};
export declare function getRandomCallingEraId(): CallingEraId;
export type CallingDemuxId = Uint32 & {
    DemuxId: never;
};
export declare function getRandomCallingDemuxId(): CallingDemuxId;
export type CallingUserId = HexString & {
    UserId: never;
};
export declare enum CallType {
    Group = 0,
    Adhoc = 1
}
export declare enum CallLinkRestrictions {
    AdminApproval = 0,
    None = 1
}
/**
 * Http
 * ----------------------------------------------------------------------------
 */
export declare const CallingPublicKeySchema: z.ZodEffects<z.ZodString, HexString, string>;
export declare function decodeCallingPublicKey(input: HexString): CallingPublicKey;
export declare function encodeCallingPublicKey(key: CallingPublicKey): HexString;
/**
 * Peek
 * ----------------------------------------------------------------------------
 */
export type CallInfoClient = Readonly<{
    demuxId: CallingDemuxId;
    opaqueUserId: CallingUserId;
}>;
export type CallInfo = Readonly<{
    eraId: CallingEraId;
    maxClients: number;
    creatorUserId: CallingUserId;
    activeClients: ReadonlyArray<CallInfoClient>;
    pendingClients: ReadonlyArray<CallInfoClient> | null;
}>;
/**
 * Errors
 * ----------------------------------------------------------------------------
 */
export declare enum CallingErrorCode {
    AuthError = 0,
    CallNotFound = 1,
    TooManyClients = 2,
    NoPermissionToCreateCall = 3,
    DuplicateDemuxIdDetected = 4,
    InternalError = 5
}
export declare class CallingError extends Error {
    #private;
    constructor(code: CallingErrorCode, message?: string);
    get code(): CallingErrorCode;
}
export declare const CallingErrorCodesToHttpStatus: Record<CallingErrorCode, number>;
/**
 * Auth
 * ----------------------------------------------------------------------------
 */
export declare const CALLING_SERVICE_SECRET: NonSharedBuffer;
export type CallingAuthToken = Readonly<{
    userId: CallingUserId;
    groupId: CallingRoomId;
    time: number;
    isAllowedToInitiateGroupCall: boolean;
    macCiphertext: string;
    macDigest: Uint8Array<ArrayBuffer>;
}>;
export declare function parseCallingAuthHeader(authHeader?: string): CallingAuthToken;
export type CallingAuth = Readonly<{
    userId: CallingUserId;
    roomId: CallingRoomId;
    isAllowedToInitiateGroupCall: boolean;
}>;
export declare function verifyCallingAuthToken(token: CallingAuthToken, key: Uint8Array<ArrayBuffer>): CallingAuth;
export type GenerateCallingAuthTokenOptions = Readonly<{
    userId: Uint8Array<ArrayBuffer>;
    groupId: string;
    isAllowedToInitiateGroupCall: boolean;
    key: Uint8Array<ArrayBuffer>;
}>;
export declare function generateCallingAuthToken(options: GenerateCallingAuthTokenOptions): string;