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fix: match browser default language error #291

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merged 1 commit into from
Jan 16, 2025
Merged

fix: match browser default language error #291

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57 changes: 21 additions & 36 deletions src/theme/Layout/BrowserLanguage.tsx
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Original file line number Diff line number Diff line change
@@ -1,57 +1,42 @@
import React, {useEffect} from 'react';
import { useEffect } from 'react';
import useDocusaurusContext from '@docusaurus/useDocusaurusContext';

const LANGUAGE_PREFERENCE_KEY = '_lang_browser_';

export default function BrowserLanguageRedirect() {
const {
siteConfig: {
i18n: {defaultLocale, locales},
i18n: { defaultLocale },
},
} = useDocusaurusContext();

useEffect(() => {
window.addEventListener('languagechange', () => {
localStorage.setItem(LANGUAGE_PREFERENCE_KEY, navigator.language);
})

const currentPath = window.location.pathname;
const storageLocale = localStorage.getItem('_lang_user_') || localStorage.getItem(LANGUAGE_PREFERENCE_KEY);
const storageLocaleIsDefault = storageLocale === defaultLocale;

if (storageLocale) {
if (storageLocaleIsDefault) {
if (currentPath === '/') return;
return;
} else {
if (currentPath.startsWith(`/${storageLocale}`)) {
return;
} else {
window.location.pathname = `/${storageLocale}${currentPath}`;
return;
}

const isZhCN = navigator.language.toLowerCase() === 'zh-cn';
const isStoredZhCN = storageLocale === 'zh-CN';

if ((isZhCN || isStoredZhCN) && !currentPath.startsWith('/zh-CN')) {
if (isZhCN) {
localStorage.setItem(LANGUAGE_PREFERENCE_KEY, 'zh-CN');
}
} else {
const browserLanguage = navigator.language.toLowerCase();
const matchedLocale = locales.find(locale =>
browserLanguage === locale.toLowerCase() ||
browserLanguage.startsWith(locale.toLowerCase() + '-')
);
if (matchedLocale) {
localStorage.setItem(LANGUAGE_PREFERENCE_KEY, matchedLocale);
window.location.pathname = `/${matchedLocale}${currentPath}`;
} else {
window.location.pathname = currentPath;
if (isStoredZhCN || storageLocale === null) {
window.location.pathname = `/zh-CN${currentPath}`;
}
}

// remove the event listener
const handleLanguageChange = () => {
if (navigator.language.toLowerCase() === 'zh-cn') {
localStorage.setItem(LANGUAGE_PREFERENCE_KEY, 'zh-CN');
}
};
window.addEventListener('languagechange', handleLanguageChange);

return () => {
window.removeEventListener('languagechange', () => {
localStorage.setItem(LANGUAGE_PREFERENCE_KEY, navigator.language);
})
}
}, []);
window.removeEventListener('languagechange', handleLanguageChange);
};
}, [defaultLocale]);

return null;
}
4 changes: 2 additions & 2 deletions src/theme/Layout/index.tsx
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Original file line number Diff line number Diff line change
Expand Up @@ -23,7 +23,7 @@ import LayoutProvider from '@theme/Layout/Provider';
import ErrorPageContent from '@theme/ErrorPageContent';
import type {Props} from '@theme/Layout';
import mixpanel from 'mixpanel-browser';
// import BrowserLanguage from './BrowserLanguage';
import BrowserLanguage from './BrowserLanguage';

import styles from './styles.module.css';

Expand Down Expand Up @@ -58,7 +58,7 @@ export default function Layout(props: Props): JSX.Element {
<AnnouncementBar />

<Navbar />
{/* <BrowserLanguage /> */}
<BrowserLanguage />

<div
id={SkipToContentFallbackId}
Expand Down
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