elapsed_time.dart

void main() {
  print(DateTime(2023, 6, 10).elapsed);
}


extension Elapsed on DateTime {
  String get elapsed {
    String result = "";
    DateTime now = DateTime.now();
    int years = now.year - this.year;
    int months = now.month - this.month;
    int days = now.day - this.day;
    print("Now year: ${now.year}");
    print("This year: ${this.year}");
    print("Now months: ${now.month}");
    print("This months: ${this.month}");
    print("Now days: ${now.day}");
    print("This days: ${this.day}");
    if (days < 0) {
      final previousMonth = DateTime(now.year, now.month - 1, this.day);
      days = (now.difference(previousMonth).inDays);
      months -= 1;
    }
    if (months < 0) {
      months += 12;
      years -= 1;
    }
    result = days > 0 ? "${days}d" : result;
    result = months > 0 ? "${months}mo  $result" : result;
    result = years > 0 ? "${years}yr  $result" : result;
    return result;
  }
}