class SCConversationTimeFormatter {
  const SCConversationTimeFormatter._();

  static String format(DateTime date, {DateTime? now}) {
    final current = now ?? DateTime.now();
    if (date.year != current.year) {
      return '${date.year}-${_twoDigits(date.month)}-${_twoDigits(date.day)}';
    }

    final time = '${_twoDigits(date.hour)}.${_twoDigits(date.minute)}';
    if (date.month != current.month || date.day != current.day) {
      return '${_twoDigits(date.month)}-${_twoDigits(date.day)} $time';
    }
    return time;
  }

  static String _twoDigits(int value) => value.toString().padLeft(2, '0');
}