import { QueuedFile, ScannedFile } from './types';
/**
 * Upload Queue Manager
 * Manages upload queue and controls concurrency
 */
export declare class UploadQueue {
    private queue;
    private queueHead;
    private activeUploads;
    private maxConcurrency;
    private paused;
    private requestIdCounter;
    constructor(maxConcurrency?: number);
    /**
     * Add files to queue
     */
    enqueue(files: ScannedFile[], baseDir: string, priority?: 'high' | 'normal'): QueuedFile[];
    /**
     * Get next file to upload
     */
    dequeue(): QueuedFile | undefined;
    /**
     * Mark file as complete
     */
    complete(requestId: number): void;
    /**
     * Pause queue
     */
    pause(): void;
    /**
     * Resume queue
     */
    resume(): void;
    /**
     * Clear queue
     */
    clear(): void;
    /**
     * Get queue status
     */
    getStatus(): {
        pending: number;
        active: number;
        paused: boolean;
    };
    /**
     * Get active uploads
     */
    getActiveUploads(): QueuedFile[];
    /**
     * Get pending files
     */
    getPendingFiles(): QueuedFile[];
    /**
     * Generate request ID
     */
    private generateRequestId;
    /**
     * Build upload path
     */
    private buildUploadPath;
}