/**
 * Context Sync Manager - Handles synchronization between terminals
 */
import { EventEmitter } from 'events';
import { ContextStore } from './context-store';
import { WebSocketManager } from '../terminal/websocket-manager';
import { ContextQuery, SyncSubscription, ContextScope, ContextType, ConflictResolution } from './types';
/**
 * Sync manager configuration
 */
export interface SyncManagerConfig {
    batchSize: number;
    syncInterval: number;
    maxRetries: number;
    retryDelay: number;
    compressionThreshold: number;
    deltaSync: boolean;
    conflictResolution: ConflictResolution;
    heartbeatInterval: number;
}
/**
 * Context Sync Manager
 */
export declare class ContextSyncManager extends EventEmitter {
    private config;
    private store;
    private wsManager;
    private subscriptions;
    private pendingUpdates;
    private sequenceCounters;
    private syncTimers;
    private heartbeatTimer?;
    private logger;
    constructor(store: ContextStore, wsManager: WebSocketManager, config?: Partial<SyncManagerConfig>);
    /**
     * Setup event handlers
     */
    private setupEventHandlers;
    /**
     * Subscribe terminal to context updates
     */
    subscribe(terminalId: string, query: ContextQuery): SyncSubscription;
    /**
     * Unsubscribe terminal from context updates
     */
    unsubscribe(terminalId: string): void;
    /**
     * Send initial sync to terminal
     */
    private sendInitialSync;
    /**
     * Handle context event from store
     */
    private handleContextEvent;
    /**
     * Check if subscriber should be notified of event
     */
    private shouldNotifySubscriber;
    /**
     * Queue update for terminal
     */
    private queueUpdate;
    /**
     * Get operation from event type
     */
    private getOperationFromEvent;
    /**
     * Start sync timer for terminal
     */
    private startSyncTimer;
    /**
     * Sync terminal with pending updates
     */
    private syncTerminal;
    /**
     * Handle sync message from terminal
     */
    private handleSyncMessage;
    /**
     * Handle update from terminal
     */
    private handleTerminalUpdate;
    /**
     * Handle sync request from terminal
     */
    private handleSyncRequest;
    /**
     * Handle conflict report from terminal
     */
    private handleConflictReport;
    /**
     * Handle acknowledgment from terminal
     */
    private handleAcknowledgment;
    /**
     * Handle heartbeat from terminal
     */
    private handleHeartbeat;
    /**
     * Handle terminal disconnect
     */
    private handleTerminalDisconnect;
    /**
     * Send sync message to terminal
     */
    private sendSyncMessage;
    /**
     * Check if payload should be compressed
     */
    private shouldCompress;
    /**
     * Compress payload
     */
    private compress;
    /**
     * Get next sequence number for terminal
     */
    private getNextSequence;
    /**
     * Start heartbeat monitoring
     */
    startHeartbeatMonitoring(): void;
    /**
     * Stop heartbeat monitoring
     */
    stopHeartbeatMonitoring(): void;
    /**
     * Broadcast context update to all subscribed terminals
     */
    broadcast(key: string, value: any, type: ContextType, scope: ContextScope): Promise<void>;
    /**
     * Get sync statistics
     */
    getSyncStatistics(): any;
    /**
     * Destroy sync manager
     */
    destroy(): void;
}
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