import { IConfig } from '../types';
/**
 * Main application class that orchestrates the DNS update process
 * with continuous monitoring capability
 */
export declare class DynDnsApp {
    private configManager;
    private logger;
    private ipDetectionService;
    private cloudflareService;
    private ipFileManager;
    private isRunning;
    private checkInterval;
    private adaptiveInterval;
    private maxInterval;
    private minInterval;
    private consecutiveStableChecks;
    private shutdownRequested;
    private debugMode;
    /**
     * Creates a new DynDns application instance
     * @param directConfig Optional configuration overrides
     * @param debug Enable debug logging
     */
    constructor(directConfig?: Partial<IConfig>, debug?: boolean);
    /**
     * Checks if configuration setup is needed
     * @returns True if configuration is missing or incomplete
     */
    needsSetup(): boolean;
    /**
     * Handles graceful shutdown on SIGINT/SIGTERM
     */
    private handleShutdown;
    /**
     * Calculates the next check interval using adaptive algorithm
     * @param ipChanged Whether the IP changed in the last check
     * @returns Time in milliseconds to wait before next check
     */
    private calculateNextInterval;
    /**
     * Runs a single DNS update check
     * @returns True if check completed successfully (even if no update needed)
     */
    runOnce(): Promise<boolean>;
    /**
     * Starts continuous monitoring for IP changes
     * Uses adaptive intervals to check more frequently when IP is changing
     */
    startMonitoring(): Promise<void>;
}