middleware.ts

import type { NextRequest } from "next/server";
import { NextResponse } from "next/server";

import generateCspPolicy from "nextjs/csp/generateCspPolicy";
import * as middlewares from "nextjs/middlewares/index";

const cspPolicy = generateCspPolicy();

export function middleware(req: NextRequest) {
  const isPageRequest = req.headers.get("accept")?.includes("text/html");
  const start = Date.now();

  if (!isPageRequest) {
    return;
  }

  const accountResponse = middlewares.account(req);
  if (accountResponse) {
    return accountResponse;
  }

  const end = Date.now();
  const res = NextResponse.next();
  res.headers.append("Content-Security-Policy", cspPolicy);
  res.headers.append("Server-Timing", `middleware;dur=${end - start}`);
  res.headers.append("Docker-ID", process.env.HOSTNAME || "");

  return res;
}

/**
 * Configure which routes should pass through the Middleware.
 */
export const config = {
  matcher: ["/", "/:notunderscore((?!_next).+)"],
  // matcher: [
  //   '/((?!.*\\.|api\\/|node-api\\/).*)', // exclude all static + api + node-api routes
  // ],
};