import { NextResponse } from 'next/server';
import type { NextRequest } from 'next/server';
import { i18n } from './app/dictionaries';

function getLocale(request: NextRequest): string {
  // Always return default locale for now (can be improved to read headers)
  return i18n.defaultLocale;
}

export function proxy(request: NextRequest) {
  const pathname = request.nextUrl.pathname;
  
  // Skip public files and _next requests
  if (
    pathname.startsWith('/_next') ||
    pathname.includes('.') ||
    pathname.startsWith('/api')
  ) {
    return;
  }

  // Check if there is any supported locale in the 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 === '/' ? '' : pathname}`, request.url)
    );
  }
}

export const config = {
  matcher: ['/((?!api|_next/static|_next/image|favicon.ico).*)'],
};