import { EventEmitter } from 'node:events';
import type { IEmailRoute, IEmailContext } from './interfaces.js';
/**
 * Email router that evaluates routes and determines actions
 */
export declare class EmailRouter extends EventEmitter {
    private routes;
    private patternCache;
    private storageManager?;
    private persistChanges;
    /**
     * Create a new email router
     * @param routes Array of email routes
     * @param options Router options
     */
    constructor(routes: IEmailRoute[], options?: {
        storageManager?: any;
        persistChanges?: boolean;
    });
    /**
     * Sort routes by priority (higher priority first)
     * @param routes Routes to sort
     * @returns Sorted routes
     */
    private sortRoutesByPriority;
    /**
     * Get all configured routes
     * @returns Array of routes
     */
    getRoutes(): IEmailRoute[];
    /**
     * Update routes
     * @param routes New routes
     * @param persist Whether to persist changes (defaults to persistChanges setting)
     */
    updateRoutes(routes: IEmailRoute[], persist?: boolean): Promise<void>;
    /**
     * Set routes (alias for updateRoutes)
     * @param routes New routes
     * @param persist Whether to persist changes
     */
    setRoutes(routes: IEmailRoute[], persist?: boolean): Promise<void>;
    /**
     * Clear the pattern cache
     */
    clearCache(): void;
    /**
     * Evaluate routes and find the first match
     * @param context Email context
     * @returns Matched route or null
     */
    evaluateRoutes(context: IEmailContext): Promise<IEmailRoute | null>;
    /**
     * Check if a route matches the context
     * @param route Route to check
     * @param context Email context
     * @returns True if route matches
     */
    private matchesRoute;
    /**
     * Check if email recipients match patterns
     * @param email Email to check
     * @param patterns Patterns to match
     * @returns True if any recipient matches
     */
    private matchesRecipients;
    /**
     * Check if email sender matches patterns
     * @param email Email to check
     * @param patterns Patterns to match
     * @returns True if sender matches
     */
    private matchesSenders;
    /**
     * Check if client IP matches patterns
     * @param context Email context
     * @param patterns IP patterns to match
     * @returns True if IP matches
     */
    private matchesClientIp;
    /**
     * Check if email headers match patterns
     * @param email Email to check
     * @param headerPatterns Header patterns to match
     * @returns True if headers match
     */
    private matchesHeaders;
    /**
     * Check if email size matches range
     * @param email Email to check
     * @param sizeRange Size range to match
     * @returns True if size is in range
     */
    private matchesSize;
    /**
     * Check if email subject matches pattern
     * @param email Email to check
     * @param pattern Pattern to match
     * @returns True if subject matches
     */
    private matchesSubject;
    /**
     * Check if a string matches a glob pattern
     * @param str String to check
     * @param pattern Glob pattern
     * @returns True if matches
     */
    private matchesPattern;
    /**
     * Convert glob pattern to RegExp
     * @param pattern Glob pattern
     * @returns Regular expression
     */
    private globToRegExp;
    /**
     * Check if IP is in CIDR range
     * @param ip IP address to check
     * @param cidr CIDR notation (e.g., '192.168.0.0/16')
     * @returns True if IP is in range
     */
    private ipInCidr;
    /**
     * Convert IP address to number
     * @param ip IP address
     * @returns Number representation
     */
    private ipToNumber;
    /**
     * Calculate approximate email size in bytes
     * @param email Email to measure
     * @returns Size in bytes
     */
    private calculateEmailSize;
    /**
     * Save current routes to storage
     */
    saveRoutes(): Promise<void>;
    /**
     * Load routes from storage
     * @param options Load options
     */
    loadRoutes(options?: {
        merge?: boolean;
        replace?: boolean;
    }): Promise<IEmailRoute[]>;
    /**
     * Add a route
     * @param route Route to add
     * @param persist Whether to persist changes
     */
    addRoute(route: IEmailRoute, persist?: boolean): Promise<void>;
    /**
     * Remove a route by name
     * @param name Route name
     * @param persist Whether to persist changes
     */
    removeRoute(name: string, persist?: boolean): Promise<void>;
    /**
     * Update a route
     * @param name Route name
     * @param route Updated route data
     * @param persist Whether to persist changes
     */
    updateRoute(name: string, route: IEmailRoute, persist?: boolean): Promise<void>;
    /**
     * Get a route by name
     * @param name Route name
     * @returns Route or undefined
     */
    getRoute(name: string): IEmailRoute | undefined;
}