import { type Socket, type ManagerOptions, type SocketOptions } from 'socket.io-client';
import type { CloudTwinResponse } from '../types/twin.types';
import { type CloudAppToken, type CloudAppFetch } from './cloud-app-token.service';
export interface CloudAppConnectResult {
    socket: Socket;
    initialTwins: CloudTwinResponse[] | undefined;
}
export interface CloudAppConnectionParams {
    appRegistrationId: string;
    appSecret: string;
    coreApiUrl: string;
    phyhubUrl: string;
    refreshLeadMs?: number;
    fetch?: CloudAppFetch;
    ioFactory?: (url: string, opts: Partial<ManagerOptions & SocketOptions>) => Socket;
    logger?: Pick<Console, 'info' | 'warn' | 'error'>;
}
export declare class CloudAppConnection {
    private readonly params;
    private socket;
    private cachedToken;
    private refreshTimer;
    private connected;
    constructor(params: CloudAppConnectionParams);
    connect(): Promise<CloudAppConnectResult>;
    disconnect(): void;
    getToken(): CloudAppToken | null;
    getSocket(): Socket | null;
    private fetchToken;
    private scheduleRefresh;
    private runRefresh;
    private refreshIfStale;
}
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