import { AssetBundle, DownloadProgress, EventCallback } from '../types/index';
import { StorageManager } from './StorageManager';
/**
 * Download manager for handling asset bundle downloads and extraction
 */
export declare class DownloadManager {
    private storageManager;
    private activeDownloads;
    private downloadCallbacks;
    private enableLogging;
    private customHeaders;
    constructor(storageManager: StorageManager, enableLogging?: boolean, customHeaders?: Record<string, string>);
    /**
     * Download and extract a bundle
     */
    downloadBundle(bundle: AssetBundle, progressCallback?: EventCallback<DownloadProgress>): Promise<void>;
    /**
     * Cancel all active downloads
     */
    cancelAllDownloads(): void;
    /**
     * Get number of active downloads
     */
    getActiveDownloadCount(): number;
    /**
     * Download a file with progress tracking
     */
    private downloadFile;
    /**
     * Extract a downloaded bundle
     */
    private extractBundle;
    /**
     * Emit download progress event
     */
    private emitProgress;
    /**
     * Cleanup temporary files
     */
    cleanupTempFiles(): Promise<void>;
    /**
     * Log message if logging is enabled
     */
    private log;
    /**
     * Cleanup resources
     */
    destroy(): void;
}