import { NextResponse, NextRequest } from 'next/server';
import acceptLanguage from 'accept-language';
import {
fallbackLng,
languages,
cookieName,
} from '@/components/providers/i18n/settings';
acceptLanguage.languages(languages);
export const config = {
matcher: [
'/((?!api|_next/static|_next/image|assets|favicon.ico|sw.js|site.webmanifest|\\.well-known|images|fonts|icons|lang).*)',
],
};
export function proxy(req: NextRequest) {
const pathname = req.nextUrl.pathname;
// widget prefix는 i18n 리다이렉트/쿠키 처리에서 제외
if (pathname.startsWith('/w')) {
return NextResponse.next();
}
let lng;
if (!lng) lng = acceptLanguage.get(req.headers.get('Accept-Language'));
if (!lng) lng = fallbackLng;
const search = req.nextUrl.search;
// locale 없는 경로는 리다이렉트
if (
!languages.some((loc) => pathname.startsWith(`/${loc}`)) &&
!pathname.startsWith('/_next')
) {
return NextResponse.redirect(
new URL(`/${lng}${pathname}${search}`, req.url),
);
}
// referer에서 언어 감지
if (req.headers.has('referer')) {
const refererUrl = new URL(req.headers.get('referer') ?? '');
const lngInReferer = languages.find((l) =>
refererUrl.pathname.startsWith(`/${l}`),
);
if (lngInReferer) {
const response = NextResponse.next();
response.cookies.set(cookieName, lngInReferer);
return response;
}
}
return NextResponse.next();
}
