checkBookingisWithIn12Hours method
Implementation
int checkBookingisWithIn12Hours(String dDate, String dTime, {int defaultHours = 12}){
final now = DateTime.now();
DateTime departureDate = DateTime.tryParse(dDate) ?? DateTime(1971);
List<String> departureTime = (dTime).split(':');
int hours = int.parse(departureTime[0]);
int minutes = int.parse(departureTime[1]);
DateTime combinedDateTime = DateTime(
departureDate.year,
departureDate.month,
departureDate.day,
hours,
minutes,
).subtract(Duration(hours: defaultHours));
final elapsedTime = combinedDateTime.difference(now);
return elapsedTime.inSeconds;
}