import type { TranslationKeys } from 'i18n';
import type { InterpolationParams } from 'i18n';
import { useTranslation as useTranslationBase } from 'i18n';
import type en from '../locales/en-GB.json';

type AppTranslationKey = TranslationKeys<typeof en>;

// The `app.` prefix is namespace wiring for the merged catalog (D6) — callers never spell it, they
// pass the same bare key the JSON file uses.
export const useTranslation = () => {
  const { t: baseT, locale } = useTranslationBase();
  const t = (key: AppTranslationKey, params?: InterpolationParams) => baseT(`app.${key}`, params);
  return { t, locale };
};