middleware.ts

import { authMiddleware } from "@clerk/nextjs";
import { NextResponse } from "next/server";
import type { NextRequest } from "next/server";
import { i18n } from "./i18n-config";
import { match as matchLocale } from "@formatjs/intl-localematcher";
import Negotiator from "negotiator";

function getLocale(request: NextRequest): string | undefined {
  const negotiatorHeaders: Record<string, string> = {};
  request.headers.forEach((value, key) => (negotiatorHeaders[key] = value));

  // @ts-ignore locales are readonly
  const locales: string[] = i18n.locales;

  let languages = new Negotiator({ headers: negotiatorHeaders }).languages(
    locales,
  );

  const locale = matchLocale(languages, locales, i18n.defaultLocale);

  return locale;
}

export function i18Middleware(request: NextRequest) {
  const pathname = request.nextUrl.pathname;
  const pathnameIsMissingLocale = i18n.locales.every(
    (locale) =>
      !pathname.startsWith(`/${locale}/`) && pathname !== `/${locale}`,
  );


  if (pathnameIsMissingLocale) {
    const locale = getLocale(request);

    return NextResponse.redirect(
      new URL(
        `/${locale}${pathname.startsWith("/") ? "" : "/"}${pathname}`,
        request.url,
      ),
    );
  }
}

export default authMiddleware({
  beforeAuth: (req) => {
    return i18Middleware(req);
  },
 
  publicRoutes: ["/", "/es","/ca","/en","/fr","/:locale/property/:id","/:locale/api/ai","/:locale/api/ai-ft","/:locale/api/pg"],
});
 
export const config = {
  matcher: ['/((?!.+\\.[\\w]+$|_next).*)', '/', '/(api|trpc)(.*)'],
};