import { tryUseNuxtApp } from '#app';

/**
 * Synchronous translation helper usable outside of Vue components.
 *
 * It resuses the request-scoped `@nuxtjs/i18n` instance exposed on the Nuxt app
 * as `$i18n`, so translations stay in sync with the active locale (including
 * server-side rendering and language switches). Falls back to the raw key when
 * no Nuxt context is available (e.g. in unit tests).
 *
 * @param key Translation key
 * @param named Named/list arguments forwarded to vue-i18n
 * @returns The translated string, or `key` when no i18n instance is found
 */
export const t = <T extends string = string>(key: T, named?: Record<string, unknown> | unknown[]): string => {
  const i18n = tryUseNuxtApp()?.$i18n;
  if (!i18n) {
    return key;
  }
  return i18n.t(key, named as never);
};