import type { BuildConfig } from './build';
import { getBuildConfig } from './build';

export function getClientConfig() {
  if (typeof document !== 'undefined') {
    // client side
    return JSON.parse(queryMeta('config') || '{}') as BuildConfig;
  }

  if (typeof process !== 'undefined') {
    // server side
    return getBuildConfig();
  }
}

function queryMeta(key: string, defaultValue?: string): string {
  let ret: string;
  if (document) {
    const meta = document.head.querySelector(
      `meta[name='${key}']`,
    ) as HTMLMetaElement;
    ret = meta?.content ?? '';
  } else {
    ret = defaultValue ?? '';
  }

  return ret;
}