mirror of
https://github.com/chillpadclub/bedolaga-cabinet.git
synced 2026-07-28 09:33:46 +00:00
28c682500c
index.html ships <html lang='ru'> and that attribute never changed at runtime, regardless of the user's selected language. Consequences: - screen readers pronounced en/zh/fa content using Russian phonics - browsers offered to translate already-translated content - the Telegram login button and an OAuth widget read documentElement.lang to set their own locale and got the wrong one LanguageSwitcher had a half-fix that only touched dir for fa, and only locally — i18n changes from anywhere else (initial detect, Telegram adopt) were not covered. Move both lang and dir updates into a single languageChanged subscriber inside i18n.ts, run once for the initial detected language, and drop the now-redundant dir-setting in LanguageSwitcher. Layout direction flips automatically for the full RTL set (fa + future ar/he/ur).
103 lines
3.1 KiB
TypeScript
103 lines
3.1 KiB
TypeScript
import i18n, { type ResourceLanguage } from 'i18next';
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import { initReactI18next } from 'react-i18next';
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import LanguageDetector from 'i18next-browser-languagedetector';
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import { getTelegramLanguageCode } from './hooks/useTelegramSDK';
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const localeLoaders: Record<string, () => Promise<{ default: ResourceLanguage }>> = {
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ru: () => import('./locales/ru.json'),
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en: () => import('./locales/en.json'),
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zh: () => import('./locales/zh.json'),
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fa: () => import('./locales/fa.json'),
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};
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const SUPPORTED_LANGS = Object.keys(localeLoaders);
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const FALLBACK_LNG = 'ru';
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const LANGUAGE_STORAGE_KEY = 'cabinet_language';
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const loadedLanguages = new Set<string>();
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async function loadLanguage(lng: string): Promise<void> {
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if (loadedLanguages.has(lng)) return;
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const loader = localeLoaders[lng];
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if (!loader) return;
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const mod = await loader();
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i18n.addResourceBundle(lng, 'translation', mod.default, true, true);
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loadedLanguages.add(lng);
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}
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i18n
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.use(LanguageDetector)
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.use(initReactI18next)
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.init({
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fallbackLng: FALLBACK_LNG,
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supportedLngs: SUPPORTED_LANGS,
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partialBundledLanguages: true,
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detection: {
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order: ['localStorage', 'navigator'],
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caches: ['localStorage'],
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lookupLocalStorage: 'cabinet_language',
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},
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interpolation: {
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escapeValue: false,
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},
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react: {
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useSuspense: false,
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},
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showSupportNotice: false,
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});
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// Load detected language + fallback on startup
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const detectedLng = i18n.language?.split('-')[0] || FALLBACK_LNG;
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const langsToLoad = [FALLBACK_LNG, ...(detectedLng !== FALLBACK_LNG ? [detectedLng] : [])];
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Promise.all(langsToLoad.map(loadLanguage));
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// Keep <html lang> + dir in sync with i18n so screen readers pronounce
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// content correctly, browsers don't offer to translate it, and RTL
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// languages (fa) flip layout direction. index.html ships with lang="ru"
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// for the first paint; runtime updates take over from there.
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const RTL_LANGS = new Set(['fa', 'ar', 'he', 'ur']);
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function syncHtmlLang(lng: string): void {
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const code = lng.split('-')[0];
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if (typeof document === 'undefined') return;
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if (document.documentElement.lang !== code) {
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document.documentElement.lang = code;
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}
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const dir = RTL_LANGS.has(code) ? 'rtl' : 'ltr';
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if (document.documentElement.dir !== dir) {
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document.documentElement.dir = dir;
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}
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}
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syncHtmlLang(detectedLng);
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// Lazy-load on language change
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i18n.on('languageChanged', (lng: string) => {
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const code = lng.split('-')[0];
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loadLanguage(code);
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syncHtmlLang(code);
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});
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/**
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* On first run inside Telegram (no explicit stored choice), adopt the user's
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* Telegram client language. Must be called after the Telegram SDK is initialised
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* (e.g. from main.tsx), since launch params are unavailable before init().
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*/
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export function applyTelegramLanguage(): void {
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try {
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if (localStorage.getItem(LANGUAGE_STORAGE_KEY)) return; // explicit choice wins
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} catch {
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return;
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}
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const code = getTelegramLanguageCode();
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if (code && SUPPORTED_LANGS.includes(code) && i18n.language?.split('-')[0] !== code) {
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i18n.changeLanguage(code);
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}
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}
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export default i18n;
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