/**
 * WEBSOCKET MANAGER
 * Handles real-time connection to Relay service
 *
 * Features:
 * - JWT-based authentication
 * - Automatic reconnection with exponential backoff
 * - Message routing and subscription management
 * - Presence tracking
 * - Heartbeat monitoring
 */
import type { DocumentId, MessageType, UserId, WebSocketMessage } from '@materi.ai/frame/core/types';
type MessageHandler = (message: WebSocketMessage) => void;
type StatusListener = (status: 'connecting' | 'connected' | 'disconnected' | 'error') => void;
/**
 * WebSocket Manager for real-time collaboration
 */
export declare class WebSocketManager {
    private ws;
    private url;
    private token;
    private userId;
    private documentId;
    private messageHandlers;
    private statusListeners;
    private reconnectAttempts;
    private reconnectDelay;
    private heartbeatTimer;
    private reconnectTimer;
    constructor();
    /**
     * Connect to WebSocket server
     */
    connect(token: string, userId: UserId, documentId: DocumentId): Promise<void>;
    /**
     * Disconnect from WebSocket
     */
    disconnect(): void;
    /**
     * Subscribe to document for real-time updates
     */
    subscribe(documentId: DocumentId): void;
    /**
     * Unsubscribe from document
     */
    unsubscribe(documentId: DocumentId): void;
    /**
     * Send message to server
     */
    send(message: WebSocketMessage): void;
    /**
     * Register handler for specific message type
     */
    on(type: MessageType, handler: MessageHandler): void;
    /**
     * Unregister handler
     */
    off(type: MessageType, handler: MessageHandler): void;
    /**
     * Listen to connection status changes
     */
    onStatusChange(listener: StatusListener): () => void;
    /**
     * Get connection status
     */
    isConnected(): boolean;
    /**
     * Handle incoming WebSocket message
     */
    private handleMessage;
    /**
     * Start heartbeat to keep connection alive
     */
    private startHeartbeat;
    /**
     * Stop heartbeat
     */
    private stopHeartbeat;
    /**
     * Attempt to reconnect with exponential backoff
     */
    private attemptReconnect;
    /**
     * Notify status change listeners
     */
    private notifyStatus;
}
/**
 * Global WebSocket manager instance
 */
export declare const wsManager: WebSocketManager;
/**
 * Connect WebSocket manager
 */
export declare function connectWebSocket(token: string, userId: UserId, documentId: DocumentId): Promise<void>;
/**
 * Disconnect WebSocket manager
 */
export declare function disconnectWebSocket(): void;
/**
 * Get WebSocket connection status
 */
export declare function isWebSocketConnected(): boolean;
export {};
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