/**
 * Session Timeout Manager for NotebookLM MCP Server
 *
 * Provides configurable session timeout enforcement:
 * - Hard timeout: Maximum session lifetime (default: 8 hours)
 * - Inactivity timeout: Auto-logout after idle period (default: 30 minutes)
 * - Warning callbacks before timeout
 * - Memory scrubbing on timeout
 *
 * Added by Pantheon Security for hardened fork.
 */
/**
 * Session timeout configuration
 */
export interface SessionTimeoutConfig {
    /** Maximum session lifetime in milliseconds (default: 8 hours) */
    maxLifetimeMs: number;
    /** Inactivity timeout in milliseconds (default: 30 minutes) */
    inactivityTimeoutMs: number;
    /** Warning before timeout in milliseconds (default: 5 minutes) */
    warningBeforeMs: number;
    /** Enable hard timeout (default: true) */
    enableHardTimeout: boolean;
    /** Enable inactivity timeout (default: true) */
    enableInactivityTimeout: boolean;
}
/**
 * Timeout callback type
 */
export type TimeoutCallback = (sessionId: string, reason: "lifetime" | "inactivity") => Promise<void>;
/**
 * Warning callback type
 */
export type WarningCallback = (sessionId: string, reason: "lifetime" | "inactivity", remainingMs: number) => void;
/**
 * Session Timeout Manager
 *
 * Manages session timeouts with configurable lifetime and inactivity limits.
 */
export declare class SessionTimeoutManager {
    private config;
    private sessions;
    private checkInterval;
    private onTimeout;
    private onWarning;
    constructor(config?: Partial<SessionTimeoutConfig>);
    /**
     * Format duration for logging
     */
    private formatDuration;
    /**
     * Register a new session
     */
    startSession(sessionId: string): void;
    /**
     * Update session activity (reset inactivity timer)
     */
    touchSession(sessionId: string): void;
    /**
     * Remove a session from tracking
     */
    removeSession(sessionId: string): void;
    /**
     * Check if a session has expired
     */
    isExpired(sessionId: string): {
        expired: boolean;
        reason?: "lifetime" | "inactivity";
    };
    /**
     * Get time remaining for a session
     */
    getTimeRemaining(sessionId: string): {
        lifetime: number;
        inactivity: number;
    } | null;
    /**
     * Get session info for all tracked sessions
     */
    getAllSessionsInfo(): Array<{
        sessionId: string;
        createdAt: number;
        lastActivity: number;
        ageMs: number;
        inactiveMs: number;
        lifetimeRemainingMs: number;
        inactivityRemainingMs: number;
    }>;
    /**
     * Set callback for when a session times out
     */
    setTimeoutCallback(callback: TimeoutCallback): void;
    /**
     * Set callback for timeout warnings
     */
    setWarningCallback(callback: WarningCallback): void;
    /**
     * Start periodic timeout check
     */
    private startPeriodicCheck;
    /**
     * Check all sessions for expiry and warnings
     */
    private checkAllSessions;
    /**
     * Stop the timeout manager
     */
    stop(): void;
    /**
     * Get configuration
     */
    getConfig(): SessionTimeoutConfig;
    /**
     * Update configuration
     */
    updateConfig(config: Partial<SessionTimeoutConfig>): void;
}
/**
 * Get or create the global timeout manager
 */
export declare function getSessionTimeoutManager(): SessionTimeoutManager;