// Smart App City — Internationalization (i18n)
import i18n from 'i18next';
import { initReactI18next } from 'react-i18next';
import * as Localization from 'expo-localization';

import { translations, Language } from '../stores/uiStore';

// Build i18next resources from our translation map
const resources: Record<string, { translation: Record<string, string> }> = {};
for (const [lang, trans] of Object.entries(translations)) {
  resources[lang] = { translation: trans };
}

i18n
  .use(initReactI18next)
  .init({
    resources,
    lng: Localization.locale?.split('-')[0] ?? 'fr',
    fallbackLng: 'fr',
    interpolation: { escapeValue: false },
  });

export default i18n;

// Helper: change language at runtime
export const changeLanguage = (lang: Language) => {
  return i18n.changeLanguage(lang);
};

// Helper: get current language
export const getCurrentLanguage = (): Language => {
  return (i18n.language?.split('-')[0] as Language) ?? 'fr';
};