deleteLocale method

Future<void> deleteLocale(String locale)

Deletes a locale file permanently.

Implementation

Future<void> deleteLocale(String locale) async {
  final normalizedLocale = locale.trim().replaceAll('-', '_');

  if (normalizedLocale == config.fallbackLocale) {
    throw CatalogOperationException('Cannot delete the default locale "$normalizedLocale".');
  }

  final dataset = await _repository.load();
  if (!dataset.locales.contains(normalizedLocale)) {
    throw CatalogOperationException('Locale "$normalizedLocale" does not exist.');
  }

  await _repository.deleteLocaleFile(normalizedLocale);

  // T028: Clean up language group fallback references when a locale is deleted.
  // If the deleted locale was a fallback target, remove it from all locales' fallback lists.
  // This implements FR-011: automatically clear fallback references when fallback locale is deleted.
  // Issue #131: Also collect affected locales for notification
  final affectedLocales = await _clearFallbackReferencesOnDelete(normalizedLocale);

  // Issue #131: Emit notification if there were affected fallback references
  if (affectedLocales.isNotEmpty) {
    _emitFallbackCascadeNotification(
      deletedLocale: normalizedLocale,
      affectedSourceLocales: affectedLocales,
    );
  }
}