public static function validateNewDates($user, $termId, $tutorId, $startDate, $endDate, $existingAppointmentId = false)
{
$nowDate = new DateTime();
date_default_timezone_set('Europe/Athens');
// TODO: remove hardcoded $user
if ($nowDate > $startDate && !$user->isAdmin()) {
throw new Exception("Starting datetime cannot be less than current datetime.");
}
$minutesAppointmentDuration = ($endDate->getTimestamp() - $startDate->getTimestamp()) / 60;
if ($minutesAppointmentDuration < 30 || $minutesAppointmentDuration > 480) {
throw new Exception("Appointment's duration can be between 30 min and 8 hours.");
}
if (!$user->isAdmin() && !ScheduleFetcher::existsTutorsSchedulesBetween($tutorId, $termId, $startDate, $endDate)) {
throw new Exception("There is a conflict with start/end date with tutor's schedule. ");
}
if (AppointmentFetcher::existsTutorsAppointmentsBetween($tutorId, $termId, $startDate, $endDate, $existingAppointmentId)) {
throw new Exception("There is a conflict with the start/end date with another appointment for selected tutor.");
}
}
