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// Next.js Bilingual (Arabic/English) RTL/LTR Localization Engine
import { match as matchLocale } from '@formatjs/intl-localematcher';
import Negotiator from 'negotiator';
import { NextResponse, type NextRequest } from 'next/server';

const locales = ['en', 'ar'];
const defaultLocale = 'en';

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

  if (pathnameIsMissingLocale) {
    const locale = getLocale(request);
    return NextResponse.redirect(new URL(`/${locale}${pathname}`, request.url));
  }
}