// import { createServer } from "http"
import { Server, AttachOptions, ServerOptions } from "./server";
import transports from "./transports/index";
import * as parser from "../engine.io-parser";

// export { Server, transports, listen, attach, parser }
export { Server, transports, attach, parser };
export { AttachOptions, ServerOptions } from "./server";
// export { uServer } from "./userver";
export { Socket } from "./socket";
export { Transport } from "./transport";
export const protocol = parser.protocol;

// /**
//  * Creates an http.Server exclusively used for WS upgrades.
//  *
//  * @param {Number} port
//  * @param {Function} callback
//  * @param {Object} options
//  * @return {Server} websocket.io server
//  * @api public
//  */
//
// function listen(port, options: AttachOptions & ServerOptions, fn) {
//   if ("function" === typeof options) {
//     fn = options;
//     options = {};
//   }

//   const server = createServer(function(req, res) {
//     res.writeHead(501);
//     res.end("Not Implemented");
//   });

//   // create engine server
//   const engine = attach(server, options);
//   engine.httpServer = server;

//   server.listen(port, fn);

//   return engine;
// }

/**
 * Captures upgrade requests for a http.Server.
 *
 * @param {http.Server} server
 * @param {Object} options
 * @return {Server} engine server
 * @api public
 */

function attach(server, options: AttachOptions & ServerOptions) {
  const engine = new Server(options);
  engine.attach(server, options);
  return engine;
}