formatTripDate function
A friendly date: "Bugun"/"Today", "Yesterday"-class words, else d MMM.
Implementation
String formatTripDate(DateTime at) {
final now = DateTime.now();
final today = DateTime(now.year, now.month, now.day);
final day = DateTime(at.year, at.month, at.day);
final diff = today.difference(day).inDays;
if (diff == 0) return S.t('today');
if (diff == 1) return S.t('yesterday');
return '${at.day}.${at.month.toString().padLeft(2, '0')}.${at.year}';
}