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71 lines
2.2 KiB
TypeScript
71 lines
2.2 KiB
TypeScript
import { NextResponse } from 'next/server';
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import type { NextRequest } from 'next/server';
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import { match } from '@formatjs/intl-localematcher';
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import Negotiator from 'negotiator';
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import { i18n } from '@/i18n-config';
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import { getPathnameLocale } from '@/src/utils/getLocale';
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/** Pick the best locale from the Accept-Language header */
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function getLocale(request: NextRequest): string {
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// Negotiator wants a plain JS object, not a Headers instance
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const negotiatorHeaders: Record<string, string> = {};
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request.headers.forEach((value, key) => {
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negotiatorHeaders[key] = value;
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});
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try {
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const languages = new Negotiator({ headers: negotiatorHeaders }).languages();
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// Filter out invalid locale values that would cause Intl.getCanonicalLocales to fail
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const validLanguages = languages.filter((lang) => {
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try {
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Intl.getCanonicalLocales(lang);
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return true;
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} catch {
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return false;
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}
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});
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if (validLanguages.length === 0) {
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return i18n.defaultLocale;
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}
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return match(validLanguages, i18n.locales, i18n.defaultLocale);
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} catch (error) {
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// Fallback to default locale if locale negotiation fails
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console.error('Locale negotiation error:', error);
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return i18n.defaultLocale;
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}
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}
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export function middleware(request: NextRequest) {
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const { pathname } = request.nextUrl;
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/* ------------------------------------------------------------------ */
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/* Locale handling: redirect /dashboard → /en-US/dashboard */
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/* ------------------------------------------------------------------ */
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const hasLocale = Boolean(getPathnameLocale(pathname));
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if (!hasLocale) {
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const locale = getLocale(request);
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const url = request.nextUrl.clone();
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url.pathname = `/${locale}${pathname}`;
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return NextResponse.redirect(url);
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}
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// Auth is handled client-side by swissoid-front
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return NextResponse.next();
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}
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/**
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* Run the middleware on every request except:
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* • /_next/static & /_next/image
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* • any file that looks like a static asset (has a file extension)
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* • images folder
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*/
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export const config = {
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matcher: [
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'/((?!_next/static|_next/image|images/.*|favicon.ico|robots.txt|sitemap.xml|.*\\.(?:jpg|jpeg|gif|png|svg|ico|webp|avif)).*)',
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],
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};
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