/**
 * Virus Scan Plugin
 * Scans files for viruses/malware before upload to storage
 * Supports multiple providers (VirusTotal, ClamAV, etc.)
 */
import { BasePlugin } from '../../base/BasePlugin';
import type { StoragePluginFile, StoragePluginContext, BeforeUploadResult, StoragePluginHealth, VirusScanPluginConfig } from '@plyaz/types/storage';
/**
 * Virus Scan Plugin
 * Scans files for malware before upload using configurable providers
 *
 * @example
 * ```typescript
 * import { VirusScanPlugin, VirusTotalProvider } from '@plyaz/storage/plugins';
 *
 * const plugin = new VirusScanPlugin({
 *   provider: new VirusTotalProvider(),
 *   // API configuration for REST-based providers (managed by plugin)
 *   apiKey: process.env.VIRUSTOTAL_API_KEY!,
 *   apiEndpoint: 'https://www.virustotal.com/api/v3',
 *   priority: 90, // Run after size validation
 * });
 *
 * const service = new StorageService({
 *   adapters: [adapter],
 *   plugins: [plugin],
 * });
 * ```
 */
export declare class VirusScanPlugin extends BasePlugin {
    private readonly provider;
    private readonly rejectOnError;
    private readonly skipAboveSize?;
    private readonly skipExtensions;
    constructor(config: VirusScanPluginConfig);
    /**
     * Initialize the plugin
     * Validates provider is available
     */
    initialize(): Promise<void>;
    /**
     * Scan file before upload (BLOCKING)
     * Rejects upload if file is infected
     */
    beforeUpload(file: StoragePluginFile, _context: StoragePluginContext): Promise<BeforeUploadResult>;
    /**
     * Check if file should be skipped
     */
    private shouldSkipFile;
    /**
     * Get file extension from filename
     */
    private getFileExtension;
    /**
     * Health check
     */
    healthCheck(): Promise<StoragePluginHealth>;
}