multica/apps/web/features/landing/i18n/context.tsx
Jiayuan 7e2b328e3c feat(web): add i18n support to landing page with Simplified Chinese
- Add dictionary-based i18n system (en/zh) with React Context provider
- Extract all hardcoded text from landing components into translation dictionaries
- Auto-detect browser language, persist preference in localStorage
- Add language switcher (EN/中文) to footer
- Add Noto Serif SC font for Chinese serif headings
- Rewrite about page Chinese copy with user-provided translation
2026-04-01 05:47:40 +08:00

51 lines
1.4 KiB
TypeScript

"use client";
import { createContext, useContext, useState, useCallback } from "react";
import { en } from "./en";
import { zh } from "./zh";
import type { LandingDict, Locale } from "./types";
const dictionaries: Record<Locale, LandingDict> = { en, zh };
const STORAGE_KEY = "multica-locale";
function getInitialLocale(): Locale {
if (typeof window === "undefined") return "en";
const stored = localStorage.getItem(STORAGE_KEY);
if (stored === "en" || stored === "zh") return stored;
// Detect from browser language
const lang = navigator.language;
if (lang.startsWith("zh")) return "zh";
return "en";
}
type LocaleContextValue = {
locale: Locale;
t: LandingDict;
setLocale: (locale: Locale) => void;
};
const LocaleContext = createContext<LocaleContextValue | null>(null);
export function LocaleProvider({ children }: { children: React.ReactNode }) {
const [locale, setLocaleState] = useState<Locale>(getInitialLocale);
const setLocale = useCallback((l: Locale) => {
setLocaleState(l);
localStorage.setItem(STORAGE_KEY, l);
}, []);
return (
<LocaleContext.Provider
value={{ locale, t: dictionaries[locale], setLocale }}
>
{children}
</LocaleContext.Provider>
);
}
export function useLocale() {
const ctx = useContext(LocaleContext);
if (!ctx) throw new Error("useLocale must be used within LocaleProvider");
return ctx;
}