import { Handler } from '@sigiljs/pathfinder';
import { default as http, IncomingMessage } from 'node:http';
import { IncomingRequestProcessorResponse } from '../requests/containers';
import { SigilResponse } from '../responses';
import { Exception } from '../responses/exceptions';
import { MiddlewareModificationRequestOptions } from '../responses/middleware-modification-request';
import { default as SigilPluginSystem } from './sigil-plugin-system';
import { SigilOptions } from './types';
import { Internal } from '../types';
/**
 * Core request processor for the Sigil framework.
 * Extends plugin system to handle incoming HTTP messages,
 * execute route handlers, format responses, and send them over HTTP.
 *
 * @template T type of SigilOptions for runtime configuration.
 */
export default class SigilRequestProcessor<T extends Partial<SigilOptions>> extends SigilPluginSystem<T> {
    /**
     * Binds the incoming message handler implementation.
     */
    constructor(options?: T);
    /**
     * Entry point for handling HTTP requests.
     * Delegates to the internal handler reference.
     *
     * @param req incoming HTTP message.
     * @param res HTTP server response object.
     */
    incomingMessageHandler(req: IncomingMessage, res: http.ServerResponse): any;
    /**
     * Sends a formatted response back to the client.
     * Applies the response template, triggers plugin hooks,
     * logs the request, and writes the HTTP response.
     *
     * @param request inbound HTTP message for context.
     * @param processedRequest processed request
     * @param response sigilResponse or Exception to send.
     * @param res HTTP server response object.
     * @param modification Modified options
     * @param at timestamp when request processing started.
     */
    protected $sendResponse(request: IncomingMessage, processedRequest: IncomingRequestProcessorResponse | null, response: SigilResponse | Exception, res: http.ServerResponse, modification: MiddlewareModificationRequestOptions, at: number): Promise<void>;
    /**
     * Executes a registered route handler safely, converting errors to Exception.
     *
     * @param handler pathfinder handler function.
     * @param req client request object.
     * @returns handler's response or an Exception on error.
     */
    protected $executeHandler(handler: Handler, req: Internal.Requests.ClientRequest<any>): Promise<Internal.Requests.HandlerResponse>;
    /**
     * Formats a raw handler response into a SigilResponse or Exception.
     * Handles file reading, redirections, and exception wrapping.
     *
     * @param response raw handler response.
     * @returns SigilResponse or Exception ready for sending.
     */
    protected $formatResponse(response: Internal.Requests.HandlerResponse): Promise<SigilResponse | Exception>;
    /**
     * Internal implementation for handling incoming HTTP messages.
     * Parses the request, invokes middleware, routes lookup, and
     * delegates to handler execution and response sending.
     *
     * @param req incoming HTTP message.
     * @param res HTTP server response object.
     */
    private $incomingMessageHandlerImpl;
}