From a7ff8a6b09281df2b971cddf30a95a4f8b774205 Mon Sep 17 00:00:00 2001
From: kewldan <40865857+kewldan@users.noreply.github.com>
Date: Mon, 13 Jul 2026 01:46:24 +0300
Subject: [PATCH] =?UTF-8?q?fix(header):=20=D0=BA=D1=8D=D1=88=D0=B8=D1=80?=
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---
 src/components/LanguageSwitcher.tsx | 24 +++++++++++-------------
 1 file changed, 11 insertions(+), 13 deletions(-)

diff --git a/src/components/LanguageSwitcher.tsx b/src/components/LanguageSwitcher.tsx
index 45585f3..47b95a7 100644
--- a/src/components/LanguageSwitcher.tsx
+++ b/src/components/LanguageSwitcher.tsx
@@ -1,25 +1,23 @@
 import { useTranslation } from 'react-i18next';
 import { useState, useRef, useEffect } from 'react';
-import { infoApi, type LanguageInfo } from '@/api/info';
+import { useQuery } from '@tanstack/react-query';
+import { infoApi } from '@/api/info';
 import { ChevronDownIcon } from '@/components/icons';
 
 export default function LanguageSwitcher() {
   const { i18n } = useTranslation();
   const [isOpen, setIsOpen] = useState(false);
-  const [availableLanguages, setAvailableLanguages] = useState<LanguageInfo[]>([]);
   const dropdownRef = useRef<HTMLDivElement>(null);
 
-  useEffect(() => {
-    const fetchLanguages = async () => {
-      try {
-        const data = await infoApi.getLanguages();
-        setAvailableLanguages(data.languages);
-      } catch {
-        // Silently fall back to empty list — component handles it gracefully
-      }
-    };
-    fetchLanguages();
-  }, []);
+  // Кэш react-query переживает перемонтирование AppShell при смене роута:
+  // локальный useState начинал каждый маунт с пустого списка, и до ответа API
+  // компонент рендерил null — переключатель «мигал» при каждой навигации.
+  const { data } = useQuery({
+    queryKey: ['languages'],
+    queryFn: infoApi.getLanguages,
+    staleTime: 1000 * 60 * 5,
+  });
+  const availableLanguages = data?.languages ?? [];
 
   const currentLang = availableLanguages.find((l) => l.code === i18n.language) ||
     availableLanguages[0] || { code: 'ru', name: 'RU', flag: '🇷🇺' };