i18n-Fundament: Cookie-basierte Sprachumschaltung (DE/EN/PL)
Wörterbücher unter lib/i18n statt next-intl (Next.js 16 ist neu genug, dass eine externe Routing-Middleware zusätzliches Risiko bedeutet hätte); Sprache liegt in einem Cookie, kein URL-Präfix nötig, dadurch bleibt proxy.ts unverändert. LocaleProvider stellt Wörterbuch + Sprache per Context für Client-Komponenten bereit (lib/i18n/shared.ts ist bewusst getrennt von lib/i18n/index.ts, damit next/headers nicht in den Client-Bundle gelangt).
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@@ -0,0 +1,23 @@
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import { NextResponse } from "next/server";
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import { isLocale, LOCALE_COOKIE } from "@/lib/i18n";
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import { isSameOrigin } from "@/lib/origin";
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// Setzt das Sprach-Cookie. Kein Login nötig (auch anonyme Besucher
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// der öffentlichen Speisekarte sollen die Sprache wechseln können).
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export async function POST(request: Request) {
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if (!isSameOrigin(request)) {
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return NextResponse.json({ error: "Nicht erlaubt." }, { status: 403 });
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}
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const body = await request.json().catch(() => null);
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const locale = body?.locale;
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if (!isLocale(locale)) {
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return NextResponse.json({ error: "Ungültige Sprache." }, { status: 400 });
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}
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const response = NextResponse.json({ ok: true });
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response.cookies.set(LOCALE_COOKIE, locale, {
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path: "/",
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maxAge: 60 * 60 * 24 * 365,
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sameSite: "lax",
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});
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return response;
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}
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+11
-7
@@ -3,6 +3,8 @@ import { Geist } from "next/font/google";
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import "./globals.css";
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import { createClient } from "@/lib/supabase/server";
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import { COLOR_VARS, DEFAULT_COLORS, faviconUrl, SITE_TITLE } from "@/lib/types";
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import { getDictionary, getLocale } from "@/lib/i18n";
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import { LocaleProvider } from "@/components/i18n/LocaleProvider";
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import packageJson from "@/package.json";
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// Farben/Logo/Favicon sollen Änderungen sofort widerspiegeln.
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@@ -37,11 +39,11 @@ export default async function RootLayout({
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children: React.ReactNode;
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}>) {
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const supabase = await createClient();
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const { data: settings } = await supabase
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.from("settings")
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.select("colors")
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.eq("id", 1)
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.maybeSingle();
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const [{ data: settings }, locale] = await Promise.all([
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supabase.from("settings").select("colors").eq("id", 1).maybeSingle(),
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getLocale(),
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]);
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const dict = getDictionary(locale);
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const colors: Record<string, string> = {
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...DEFAULT_COLORS,
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@@ -52,9 +54,11 @@ export default async function RootLayout({
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) as React.CSSProperties;
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return (
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<html lang="de" className={`${geistSans.variable} h-full antialiased`}>
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<html lang={locale} className={`${geistSans.variable} h-full antialiased`}>
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<body style={style} className="min-h-full flex flex-col">
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{children}
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<LocaleProvider locale={locale} dict={dict}>
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{children}
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</LocaleProvider>
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<footer className="mt-auto px-4 py-2 text-right text-xs text-gray-400 select-none">
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Version {packageJson.version}
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</footer>
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