import { hasLocale } from 'next-intl';
import { getRequestConfig } from 'next-intl/server';
import { routing } from './routing';

async function loadTranslationType(type: string, locale: string) {
  try {
    return (await import(`./translations/${type}/${locale}.json`)).default;
  } catch {
    return (await import(`./translations/${type}/${routing.defaultLocale}.json`)).default;
  }
}

async function loadMessages(locale: string) {
  const resources = ['messages', 'pages', 'components', 'errors', 'form'].map((type) => {
    return loadTranslationType(type, locale);
  });
  const loaded = await Promise.all(resources);

  return Object.assign({}, ...loaded);
}

export default getRequestConfig(async ({ requestLocale }) => {
  const requested = await requestLocale;
  const locale = hasLocale(routing.locales, requested) ? requested : routing.defaultLocale;
  const messages = await loadMessages(locale);

  return { locale, messages };
});