import { Server } from "@modelcontextprotocol/sdk/dist/server/index.js";
import type * as cron from "node-cron";
export interface EventSubscription {
    id: string;
    contractId: string;
    eventName: string;
    responseMethodName: string;
    responseParameterName: string;
    cronExpression: string;
    server: Server;
    cronJob?: cron.ScheduledTask;
    isActive: boolean;
    createdAt: number;
    lastEventAt?: number;
}
export interface SubscriptionConfig {
    contractId: string;
    eventName: string;
    responseMethodName: string;
    responseParameterName: string;
    cronExpression: string;
    server: Server;
}
export declare class SubscriptionManager {
    private static instance;
    private subscriptions;
    private readonly DEFAULT_CRON_EXPRESSION;
    private readonly DEFAULT_RESPONSE_METHOD;
    private readonly DEFAULT_RESPONSE_PARAMETER_NAME;
    private constructor();
    /**
     * Get singleton instance of SubscriptionManager
     */
    static getInstance(): SubscriptionManager;
    /**
     * Subscribe to a new event
     */
    subscribe(config: SubscriptionConfig): EventSubscription;
    /**
     * Unsubscribe from an event
     */
    unsubscribe(contractId: string, eventName: string): boolean;
    /**
     * Check if a subscription exists
     */
    hasSubscription(contractId: string, eventName: string): boolean;
    /**
     * Get a specific subscription
     */
    getSubscription(contractId: string, eventName: string): EventSubscription | undefined;
    /**
     * Get all active subscriptions
     */
    getActiveSubscriptions(): EventSubscription[];
    /**
     * Get all subscriptions for a specific contract
     */
    getSubscriptionsByContract(contractId: string): EventSubscription[];
    /**
     * Update subscription's cron job
     */
    updateCronJob(contractId: string, eventName: string, cronJob: cron.ScheduledTask): boolean;
    /**
     * Mark subscription as having received an event
     */
    markEventReceived(contractId: string, eventName: string): void;
    /**
     * Pause a subscription (keeps it in memory but marks as inactive)
     */
    pauseSubscription(contractId: string, eventName: string): boolean;
    /**
     * Resume a paused subscription
     */
    resumeSubscription(contractId: string, eventName: string): boolean;
    /**
     * Get subscription statistics
     */
    getStats(): {
        total: number;
        active: number;
        paused: number;
        contractCounts: {
            [k: string]: number;
        };
        oldestSubscription: number | null;
    };
    /**
     * Clean up all subscriptions (useful for shutdown)
     */
    cleanup(): void;
    /**
     * Generate a unique subscription ID
     */
    private generateSubscriptionId;
    /**
     * Get all subscription IDs (useful for debugging)
     */
    getSubscriptionIds(): string[];
}
export declare const subscriptionManager: SubscriptionManager;