74 lines
2.3 KiB
TypeScript
74 lines
2.3 KiB
TypeScript
import { NextResponse } from 'next/server';
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import type { NextRequest } from 'next/server';
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import { SUPPORTED_LOCALES, DEFAULT_LOCALE } from './lib/locales';
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// Paths that should not be localized
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const PUBLIC_FILE = /\.(.*)$/;
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const SKIP_PATHS = ['/_next', '/api', '/favicon.ico', '/robots.txt', '/sitemap.xml', '/sitemap'];
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export function proxy(request: NextRequest) {
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const { pathname } = request.nextUrl;
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// Skip Next.js internals, APIs, and public files
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if (
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SKIP_PATHS.some((p) => pathname.startsWith(p)) ||
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PUBLIC_FILE.test(pathname)
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) {
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return NextResponse.next();
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}
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// Check if the pathname already has a locale
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const matchedLocale = SUPPORTED_LOCALES.find(
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(locale) => pathname.startsWith(`/${locale}/`) || pathname === `/${locale}`
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);
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if (matchedLocale) {
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const requestHeaders = new Headers(request.headers);
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requestHeaders.set('x-homaroma-locale', matchedLocale);
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return NextResponse.next({
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request: {
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headers: requestHeaders,
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},
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});
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}
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// Determine the preferred locale
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// 1. Check cookie
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const cookieLocale = request.cookies.get('app_lang')?.value;
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let targetLocale = DEFAULT_LOCALE;
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if (cookieLocale && (SUPPORTED_LOCALES as readonly string[]).includes(cookieLocale)) {
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targetLocale = cookieLocale as typeof SUPPORTED_LOCALES[number];
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} else {
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// 2. Check Accept-Language header
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const acceptLang = request.headers.get('accept-language');
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if (acceptLang) {
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const preferred = acceptLang.split(',')[0].split('-')[0].toLowerCase();
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if ((SUPPORTED_LOCALES as readonly string[]).includes(preferred)) {
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targetLocale = preferred as typeof SUPPORTED_LOCALES[number];
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}
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}
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}
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// Redirect to the localized path
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const newUrl = request.nextUrl.clone();
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newUrl.pathname = `/${targetLocale}${pathname === '/' ? '' : pathname}`;
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return NextResponse.redirect(newUrl);
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}
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// Next.js 16 Proxy configuration
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export const config = {
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matcher: [
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/*
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* Match all request paths except for the ones starting with:
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* - api (API routes)
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* - _next/static (static files)
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* - _next/image (image optimization files)
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* - favicon.ico, sitemap.xml, robots.txt (metadata files)
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*/
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'/((?!api|_next/static|_next/image|favicon.ico|sitemap.xml|robots.txt).*)',
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],
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};
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