From 9ed08004affee1e2a5de2e20911b3d5b794e4439 Mon Sep 17 00:00:00 2001
From: Marc Mintel <marc@mintel.me>
Date: Wed, 11 Feb 2026 12:07:08 +0100
Subject: [PATCH] fix(i18n): harden locale validation and fix missing
 translation tags

---
 i18n/request.ts         | 17 ++++++++++++-----
 messages/de.json        |  4 ++--
 messages/en.json        |  4 ++--
 sentry.edge.config.ts   |  8 ++++++--
 sentry.server.config.ts |  8 ++++++--
 5 files changed, 28 insertions(+), 13 deletions(-)

diff --git a/i18n/request.ts b/i18n/request.ts
index 3b1795b8..5cf50a78 100644
--- a/i18n/request.ts
+++ b/i18n/request.ts
@@ -2,11 +2,18 @@ import { getRequestConfig } from 'next-intl/server';
 import * as Sentry from '@sentry/nextjs';
 
 export default getRequestConfig(async ({ requestLocale }) => {
-  let locale = await requestLocale;
+  // Hardened locale validation: only allow 'en' or 'de'
+  // Use a temporary variable to validate before assigning to locale
+  const rawLocale = await requestLocale;
+  const supportedLocales = ['en', 'de'];
+  const locale =
+    typeof rawLocale === 'string' && supportedLocales.includes(rawLocale) ? rawLocale : 'en';
 
-  // Ensure that a valid locale is used
-  if (!locale || !['en', 'de'].includes(locale)) {
-    locale = 'en';
+  // Log to Sentry if we had to fallback, as it might indicate a routing issue
+  if (!rawLocale || !supportedLocales.includes(rawLocale as string)) {
+    console.warn(
+      `[i18n] Invalid or missing requestLocale received: "${rawLocale}". Falling back to "en".`,
+    );
   }
 
   return {
@@ -26,6 +33,6 @@ export default getRequestConfig(async ({ requestLocale }) => {
         return path;
       }
       return 'fallback';
-    }
+    },
   } as any;
 });
diff --git a/messages/de.json b/messages/de.json
index f5e974e0..c9a8dd11 100644
--- a/messages/de.json
+++ b/messages/de.json
@@ -206,7 +206,7 @@
       "title": "Produktportfolio | Hochwertige Kabel für jede Anwendung",
       "description": "Entdecken Sie unser umfassendes Sortiment an zertifizierten Kabeln: von Niederspannung über Mittel- und Hochspannung bis hin zu spezialisierten Solarkabeln."
     },
-    "title": "Unsere Produkte",
+    "title": "Unsere <green>Produkte</green>",
     "subtitle": "Entdecken Sie unser umfassendes Sortiment an hochwertigen Kabeln für jede Anwendung.",
     "heroSubtitle": "Produktportfolio",
     "categoryLabel": "Kategorie",
@@ -393,4 +393,4 @@
       "cta": "Zurück zur Sicherheit"
     }
   }
-}
\ No newline at end of file
+}
diff --git a/messages/en.json b/messages/en.json
index 3abc721d..c7b7764e 100644
--- a/messages/en.json
+++ b/messages/en.json
@@ -206,7 +206,7 @@
       "title": "Product Portfolio | High-Quality Cables for Every Application",
       "description": "Explore our comprehensive range of certified cables: from low voltage to medium and high voltage, as well as specialized solar cables."
     },
-    "title": "Our Products",
+    "title": "Our <green>Products</green>",
     "subtitle": "Explore our comprehensive range of high-quality cables designed for every application.",
     "heroSubtitle": "Product Portfolio",
     "categoryLabel": "Category",
@@ -393,4 +393,4 @@
       "cta": "Back to Safety"
     }
   }
-}
\ No newline at end of file
+}
diff --git a/sentry.edge.config.ts b/sentry.edge.config.ts
index 4beaf25f..471d7cd6 100644
--- a/sentry.edge.config.ts
+++ b/sentry.edge.config.ts
@@ -5,6 +5,10 @@ const dsn = process.env.SENTRY_DSN;
 Sentry.init({
   dsn,
   enabled: Boolean(dsn),
-  tracesSampleRate: 0,
-});
 
+  // Adjust this value in production, or use tracesSampler for greater control
+  tracesSampleRate: 1,
+
+  // Setting this option to true will print useful information to the console while you're setting up Sentry.
+  debug: false,
+});
diff --git a/sentry.server.config.ts b/sentry.server.config.ts
index 4beaf25f..471d7cd6 100644
--- a/sentry.server.config.ts
+++ b/sentry.server.config.ts
@@ -5,6 +5,10 @@ const dsn = process.env.SENTRY_DSN;
 Sentry.init({
   dsn,
   enabled: Boolean(dsn),
-  tracesSampleRate: 0,
-});
 
+  // Adjust this value in production, or use tracesSampler for greater control
+  tracesSampleRate: 1,
+
+  // Setting this option to true will print useful information to the console while you're setting up Sentry.
+  debug: false,
+});