fix: lang switch

app/[locale]/not-found.tsx

@@ -1,66 +1,137 @@
-'use client';
-import { useTranslations } from 'next-intl';
+import { getTranslations } from 'next-intl/server';
 import { Container, Button, Heading } from '@/components/ui';
 import Scribble from '@/components/Scribble';
-import { useEffect } from 'react';
-import { useAnalytics } from '@/components/analytics/useAnalytics';
-import { AnalyticsEvents } from '@/components/analytics/analytics-events';
+import { getPayload } from 'payload';
+import configPromise from '@payload-config';
+import { headers } from 'next/headers';
+import ClientNotFoundTracker from '@/components/analytics/ClientNotFoundTracker';
 
-export default function NotFound() {
-  const t = useTranslations('Error.notFound');
-  const { trackEvent } = useAnalytics();
+export default async function NotFound() {
+  const t = await getTranslations('Error.notFound');
 
-  useEffect(() => {
-    const errorUrl = typeof window !== 'undefined' ? window.location.pathname : 'unknown';
-    trackEvent(AnalyticsEvents.ERROR, {
-      type: '404_not_found',
-      path: errorUrl,
-    });
+  // Try to determine the requested path
+  const headersList = await headers();
+  const urlPath = headersList.get('x-invoke-path') || '';
 
-    // Explicitly send the 404 to Sentry so we have visibility into broken links
-    import('@sentry/nextjs').then((Sentry) => {
-      Sentry.withScope((scope) => {
-        scope.setTag('status_code', '404');
-        scope.setTag('path', errorUrl);
-        Sentry.captureMessage(`Route Not Found: ${errorUrl}`, 'warning');
-      });
-    });
-  }, [trackEvent]);
+  let suggestedUrl = null;
+  let suggestedLang = null;
+
+  // If we have a path, try to see if the last segment (slug) exists in ANY locale
+  if (urlPath) {
+    const slug = urlPath.split('/').filter(Boolean).pop();
+    if (slug) {
+      try {
+        const payload = await getPayload({ config: configPromise });
+
+        // Check posts
+        const postRes = await payload.find({
+          collection: 'posts',
+          where: { slug: { equals: slug } },
+          locale: 'all',
+          limit: 1,
+        });
+
+        // Check products
+        const productRes =
+          postRes.docs.length === 0
+            ? await payload.find({
+                collection: 'products',
+                where: { slug: { equals: slug } },
+                locale: 'all',
+                limit: 1,
+              })
+            : { docs: [] };
+
+        // Check pages
+        const pageRes =
+          postRes.docs.length === 0 && productRes.docs.length === 0
+            ? await payload.find({
+                collection: 'pages',
+                where: { slug: { equals: slug } },
+                locale: 'all',
+                limit: 1,
+              })
+            : { docs: [] };
+
+        const anyDoc = postRes.docs[0] || productRes.docs[0] || pageRes.docs[0];
+
+        if (anyDoc) {
+          // If the doc exists, we can figure out its native locale or
+          // offer the alternative locale (if we are in 'de', offer 'en')
+          const currentLocale = urlPath.startsWith('/en') ? 'en' : 'de';
+          const alternativeLocale = currentLocale === 'de' ? 'en' : 'de';
+
+          suggestedLang = alternativeLocale === 'de' ? 'Deutsch' : 'English';
+
+          // Reconstruct the URL for the alternative locale
+          const pathParts = urlPath.split('/').filter(Boolean);
+          if (pathParts.length > 0 && (pathParts[0] === 'en' || pathParts[0] === 'de')) {
+            pathParts[0] = alternativeLocale;
+          } else {
+            pathParts.unshift(alternativeLocale);
+          }
+          suggestedUrl = '/' + pathParts.join('/');
+        }
+      } catch (e) {
+        // Ignore Payload errors in 404
+      }
+    }
+  }
 
   return (
-    <Container className="relative py-24 flex flex-col items-center justify-center text-center min-h-[70vh] overflow-hidden">
-      {/* Industrial Background Element */}
-      <div className="absolute inset-0 -z-10 opacity-[0.03] pointer-events-none flex items-center justify-center">
-        <span className="text-[20rem] font-bold select-none">404</span>
-      </div>
+    <>
+      <ClientNotFoundTracker path={urlPath} />
+      <Container className="relative py-24 flex flex-col items-center justify-center text-center min-h-[70vh] overflow-hidden">
+        {/* Industrial Background Element */}
+        <div className="absolute inset-0 -z-10 opacity-[0.03] pointer-events-none flex items-center justify-center">
+          <span className="text-[20rem] font-bold select-none">404</span>
+        </div>
 
-      <div className="relative mb-8">
-        <Heading level={1} className="text-6xl md:text-8xl font-bold mb-2">
-          404
+        <div className="relative mb-8">
+          <Heading level={1} className="text-6xl md:text-8xl font-bold mb-2">
+            404
+          </Heading>
+          <Scribble
+            variant="circle"
+            className="w-[150%] h-[150%] -top-[25%] -left-[25%] text-accent/40"
+          />
+        </div>
+
+        <Heading level={2} className="text-2xl md:text-3xl font-bold mb-4 text-primary">
+          {t('title')}
         </Heading>
-        <Scribble
-          variant="circle"
-          className="w-[150%] h-[150%] -top-[25%] -left-[25%] text-accent/40"
-        />
-      </div>
 
-      <Heading level={2} className="text-2xl md:text-3xl font-bold mb-4 text-primary">
-        {t('title')}
-      </Heading>
+        <p className="text-text-secondary mb-10 max-w-md text-lg">{t('description')}</p>
 
-      <p className="text-white/60 mb-10 max-w-md text-lg">{t('description')}</p>
+        {suggestedUrl && (
+          <div className="mb-12 p-6 bg-accent/10 border border-accent/20 rounded-2xl animate-fade-in shadow-lg relative overflow-hidden group">
+            <div className="absolute inset-0 bg-accent/5 -skew-x-12 translate-x-full group-hover:translate-x-0 transition-transform duration-700" />
+            <div className="relative z-10">
+              <h3 className="text-primary font-bold mb-2 text-lg">
+                Did you mean to visit the {suggestedLang} version?
+              </h3>
+              <p className="text-text-secondary text-sm mb-4">
+                This page exists, but in another language.
+              </p>
+              <Button href={suggestedUrl} variant="accent" size="md" className="w-full sm:w-auto">
+                Go to {suggestedLang} Version
+              </Button>
+            </div>
+          </div>
+        )}
 
-      <div className="flex flex-col sm:flex-row gap-4">
-        <Button href="/" variant="accent" size="lg">
-          {t('cta')}
-        </Button>
-        <Button href="/contact" variant="outline" size="lg">
-          Contact Support
-        </Button>
-      </div>
+        <div className="flex flex-col sm:flex-row gap-4">
+          <Button href="/" variant={suggestedUrl ? 'outline' : 'accent'} size="lg">
+            {t('cta')}
+          </Button>
+          <Button href="/contact" variant={suggestedUrl ? 'ghost' : 'outline'} size="lg">
+            Contact Support
+          </Button>
+        </div>
 
-      {/* Decorative Industrial Line */}
-      <div className="absolute bottom-0 left-1/2 -translate-x-1/2 w-px h-24 bg-gradient-to-t from-accent/50 to-transparent" />
-    </Container>
+        {/* Decorative Industrial Line */}
+        <div className="absolute bottom-0 left-1/2 -translate-x-1/2 w-px h-24 bg-gradient-to-t from-accent/50 to-transparent" />
+      </Container>
+    </>
   );
 }