private bool IsGuestAvailable(int reservationGuestId, DateTime arrivingDate, DateTime leavingDate)
{
var guestReservations = _reservationRepo.GetAllReservationsOfGuest(reservationGuestId);
var relevantGuesReservations = guestReservations.Where(reserv => reserv.LeavingDate > arrivingDate).ToList();
foreach (Reservation reservation in relevantGuesReservations)
{
if (reservation.LeavingDate < leavingDate || (reservation.ArrivingDate > arrivingDate && reservation.ArrivingDate < leavingDate))
{
return(false);
}
}
return(true);
}