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import { HttpContext, PreRequestMiddleware } from "alosaur/mod.ts";import { ChatHandler } from "./chat.handler.ts";
export class WebsocketMiddleware implements PreRequestMiddleware {  async onPreRequest(context: HttpContext) {    const { request, respondWith } = context.request.serverRequest;
    if (request.headers.get("upgrade") != "websocket") {      return respondWith(        new Response("not trying to upgrade as websocket.", { status: 400 }),      );    }
    const { socket, response } = Deno.upgradeWebSocket(request);
    ChatHandler(socket);    respondWith(response);
    context.response.setNotRespond();  }}