middleware.ts

import acceptLanguage from "accept-language";
import { locales } from "@/i18n.config";
import { NextRequest, NextResponse } from "next/server";
import { getLocale, getPathnameLocale } from "./middlewares/getLocale";

acceptLanguage.languages(Array.from(locales));

export default function middleware(req: NextRequest) {
  const pathname = req.nextUrl.pathname;

  // Check if there is any supported locale in the pathname
  const locale = getLocale(req);
  const pathnameLocale = getPathnameLocale(pathname);

  // Redirect if there is no locale
  if (!pathnameLocale) {
    const response = NextResponse.redirect(
      new URL(`/${locale}/${pathname}`, req.url)
    );
    response.cookies.set("NEXT_LOCALE", locale);
    return response;
  } else {
    // Set locale in cookies
    const response = NextResponse.next();
    response.cookies.set("NEXT_LOCALE", pathnameLocale);
    return response;
  }
};

export const config = {
  matcher: ["/((?!api|_next/static|blog|_next/image|fonts|images|sounds|vectors|assets|favicon.ico).*)"],
};