import * as plugins from '../../plugins.js';
import { EventEmitter } from 'node:events';
import type { IEmailRoute, IEmailMatch, IEmailAction, IEmailContext } from './interfaces.js';
import type { Email } from '../core/classes.email.js';

/**
 * Email router that evaluates routes and determines actions
 */
export class EmailRouter extends EventEmitter {
  private routes: IEmailRoute[];
  private patternCache: Map<string, boolean> = new Map();
  
  /**
   * Create a new email router
   * @param routes Array of email routes
   */
  constructor(routes: IEmailRoute[]) {
    super();
    this.routes = this.sortRoutesByPriority(routes);
  }
  
  /**
   * Sort routes by priority (higher priority first)
   * @param routes Routes to sort
   * @returns Sorted routes
   */
  private sortRoutesByPriority(routes: IEmailRoute[]): IEmailRoute[] {
    return [...routes].sort((a, b) => {
      const priorityA = a.priority ?? 0;
      const priorityB = b.priority ?? 0;
      return priorityB - priorityA; // Higher priority first
    });
  }
  
  /**
   * Get all configured routes
   * @returns Array of routes
   */
  public getRoutes(): IEmailRoute[] {
    return [...this.routes];
  }
  
  /**
   * Update routes
   * @param routes New routes
   */
  public updateRoutes(routes: IEmailRoute[]): void {
    this.routes = this.sortRoutesByPriority(routes);
    this.clearCache();
    this.emit('routesUpdated', this.routes);
  }
  
  /**
   * Clear the pattern cache
   */
  public clearCache(): void {
    this.patternCache.clear();
    this.emit('cacheCleared');
  }
}