/// <reference types="express" />
import { Request, Response } from '@loopback/rest';
import { FlclLoggerLb4 } from 'fc-logger';
import { SecurityConfig, SecurityValidationResult } from '../types';
export declare class SecurityMiddleware {
    private logger?;
    private corsHandler;
    private securityHeadersHandler;
    private fileUploadHandler;
    private inputValidator;
    private sqlInjectionDetector;
    private xssDetector;
    private securityLogger;
    private config;
    constructor(config?: SecurityConfig, logger?: FlclLoggerLb4 | undefined);
    /**
     * Create a SecurityMiddleware instance with default configuration
     */
    static createWithDefaults(logger?: FlclLoggerLb4): SecurityMiddleware;
    /**
     * Create a SecurityMiddleware instance with custom configuration
     */
    static createWithConfig(config: SecurityConfig, logger?: FlclLoggerLb4): SecurityMiddleware;
    private mergeWithDefaults;
    private initializeHandlers;
    /**
     * Check if the request is a health check request
     */
    private isHealthCheckRequest;
    /**
     * Check if the request URL should be skipped from security checks
     */
    private isSkippedUrl;
    /**
     * Apply comprehensive security checks to the incoming request
     */
    applySecurityChecks(req: Request, res: Response): Promise<SecurityValidationResult>;
    /**
     * Handle security violations and generate appropriate responses
     */
    private handleSecurityViolation;
    /**
     * Get list of security checks that are currently enabled
     */
    private getAppliedChecks;
    /**
     * Generate a unique request ID for tracking
     */
    private generateRequestId;
    /**
     * Update security configuration at runtime
     */
    updateConfiguration(newConfig: Partial<SecurityConfig>): void;
    /**
     * Add health check paths to bypass security
     */
    addHealthCheckPaths(paths: string[]): void;
    /**
     * Remove health check paths
     */
    removeHealthCheckPaths(paths: string[]): void;
    /**
     * Get current health check paths
     */
    getHealthCheckPaths(): string[];
    /**
     * Get current security configuration
     */
    getConfiguration(): SecurityConfig;
}