/**
 * Get the system locale language code
 * @returns The system locale (e.g., 'zh', 'ja', 'en', etc.)
 */
export function getSystemLocale(): string {
  const envLang = process.env.LANG || process.env.LC_ALL || process.env.LC_MESSAGES || '';

  // Parse locale from environment variables
  // Examples: 'zh_CN.UTF-8', 'en_US.UTF-8', 'ja_JP.UTF-8'
  const match = envLang.match(/^([a-z]{2})/i);
  if (match) {
    return match[1].toLowerCase();
  }

  // Try to get from other environment variables
  const language = process.env.LANGUAGE || '';
  const langMatch = language.match(/^([a-z]{2})/i);
  if (langMatch) {
    return langMatch[1].toLowerCase();
  }

  // Default to English if no locale can be determined
  return 'en';
}

/**
 * Get translated description based on system locale
 * @param translations - Array of translation objects
 * @param systemLocale - The system locale (e.g., 'zh', 'ja')
 * @returns The translated description or original description if no translation found
 */
export function getTranslatedDescription(
  translations: any[] | undefined,
  systemLocale: string,
  originalDescription: string
): string {
  if (!translations || translations.length === 0) {
    return originalDescription;
  }

  // Find translation matching the system locale
  const translation = translations.find(t => t.locale === systemLocale);

  // Return translated description if found, otherwise return original
  return translation?.description || originalDescription;
}