public void ValidateFlightTicketCosts(IFlightReservation reservation)
{
var ticketCost = reservation.PricePerTicket;
if (ticketCost < 0)
{
throw new TicketCostException();
}
}
public void ValidateFlightDestination(IFlightReservation reservation)
{
var destination = reservation.Destination;
if (string.IsNullOrWhiteSpace(destination))
{
throw new InvalidDestinatinationException();
}
}
public void ValidateFlightOriginAndDestination(IFlightReservation reservation)
{
var destination = reservation.Destination;
var origin = reservation.Origin;
if ((!string.IsNullOrWhiteSpace(destination) || !string.IsNullOrWhiteSpace(origin)) && (string.Compare(origin, destination, StringComparison.OrdinalIgnoreCase) == 0))
{
throw new InvalidFlightOriginAndDestinationException();
}
}
public decimal CalculateTotalReservationFees(IFlightReservation reservation)
{
decimal?totalFees = 0;
if (reservation.FeesPerTicket.HasValue)
{
totalFees = reservation.FeesPerTicket.Value * reservation.Passengers.Count;
}
return((decimal)totalFees);
}
public void ValidateFlightReservation(IFlightReservation reservation)
{
var departureDate = reservation.DepartureDate;
var returnDate = reservation.ReturnDate;
if (returnDate.HasValue)
{
if (departureDate > returnDate.Value)
{
throw new DateRangeException();
}
}
}
public decimal CalculateTotalReservationCost(IFlightReservation reservation)
{
decimal?totalPrice = 0;
decimal?totalFees = 0;
_validation.ValidateFlightReservation(reservation);
_validation.ValidateFlightTicketCosts(reservation);
_validation.ValidateFlightOriginAndDestination(reservation);
_validation.ValidateFlightDestination(reservation);
if (reservation.FeesPerTicket.HasValue)
{
totalFees = reservation.FeesPerTicket.Value * reservation.Passengers.Count;
}
totalPrice = reservation.PricePerTicket * reservation.Passengers.Count + totalFees;
return((decimal)totalPrice);
}