/**
 * Copyright (C) 2019-2021 Carl Kittelberger <icedream@icedream.pw>
 * 
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 * 
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

import { shouldPolyfill } from '@formatjs/intl-numberformat/should-polyfill';
import '@formatjs/intl-numberformat/polyfill';
import '@formatjs/intl-numberformat/locale-data/de';
import '@formatjs/intl-numberformat/locale-data/en';
import { UnboxPromise } from './types';

export const defaultLocale = 'en';
export const defaultLocaleDescription = 'English';

export const availableLocales: Array<string> = [
  defaultLocale,
  'de',
];

export const localeDescriptions: Record<string, string> = {
  [defaultLocale]: defaultLocaleDescription,
  de: 'German',
};

export async function loadLocalePolyfill(
  locale: string,
): Promise<void> {
  // if (shouldPolyfill()) {
  //   // Load the polyfill 1st BEFORE loading data
  //   console.log('Loading intl-numberformat polyfill');
  //   await import('@formatjs/intl-numberformat/polyfill');
  // } else {
  //   console.log('Skipping intl-numberformat polyfill');
  // }

  // if (Object.keys(Intl.NumberFormat).includes('polyfilled')) {
  //   console.log('Intl.NumberFormat is polyfilled, let\'s load intl-numberformat locale data');
  //   switch (locale) {
  //     case 'de':
  //       await import('@formatjs/intl-numberformat/locale-data/de');
  //       break;
  //     default:
  //       await import('@formatjs/intl-numberformat/locale-data/en');
  //       break;
  //   }
  //   console.log('intl-numberformat locale data loaded');
  // } else {
  //   console.log('Intl.NumberFormat is native');
  // }
}

export async function loadLocaleData(
  locale: string,
) {
  let localeData;

  switch (locale) {
    case 'de':
      localeData = await import('../compiled-lang/de.json');
      break;
    default:
      localeData = await import('../compiled-lang/en.json');
      break;
  }

  return localeData.default;
}

export function isPolyfilled(): boolean {
  return !Object.keys(Intl.NumberFormat).includes('polyfilled');
}

export function isPolyfillPhaseDone(): boolean {
  // return shouldPolyfill() && isPolyfilled();
  return true;
}

export type LocaleData = UnboxPromise<ReturnType<typeof loadLocaleData>>;