| 1 | import { |
| 2 | createContext, |
| 3 | useContext, |
| 4 | useState, |
| 5 | useEffect, |
| 6 | ReactNode, |
| 7 | } from "react"; |
| 8 | import { translations, SupportedLanguage, Translation } from "../utils/i18n"; |
| 9 | |
| 10 | interface LanguageContextType { |
| 11 | lang: SupportedLanguage; |
| 12 | setLang: (lang: SupportedLanguage) => void; |
| 13 | t: Translation; |
| 14 | } |
| 15 | |
| 16 | const LanguageContext = createContext<LanguageContextType | undefined>( |
| 17 | undefined, |
| 18 | ); |
| 19 | |
| 20 | interface LanguageProviderProps { |
| 21 | children: ReactNode; |
| 22 | } |
| 23 | |
| 24 | export function LanguageProvider({ children }: LanguageProviderProps) { |
| 25 | const [lang, setLang] = useState<SupportedLanguage>("en"); |
| 26 | const t = translations[lang]; |
| 27 | |
| 28 | // Update HTML lang and dir attributes when language changes |
| 29 | useEffect(() => { |
| 30 | const htmlElement = document.documentElement; |
| 31 | const isRTL = lang === "fa"; |
| 32 | |
| 33 | htmlElement.lang = lang; |
| 34 | htmlElement.dir = isRTL ? "rtl" : "ltr"; |
| 35 | }, [lang]); |
| 36 | |
| 37 | return ( |
| 38 | <LanguageContext.Provider value={{ lang, setLang, t }}> |
| 39 | {children} |
| 40 | </LanguageContext.Provider> |
| 41 | ); |
| 42 | } |
| 43 | |
| 44 | export function useLang(): LanguageContextType { |
| 45 | const context = useContext(LanguageContext); |
| 46 | if (context === undefined) { |
| 47 | throw new Error("useLang must be used within a LanguageProvider"); |
| 48 | } |
| 49 | return context; |
| 50 | } |