public void ValidateLodgingCosts(ILodgingReservation reservation)
{
var pricePerPerson = reservation.PricePerPerson;
if (pricePerPerson < 0)
{
throw new LodgingCostException();
}
}
public void ValidateLodgingDestination(ILodgingReservation reservation)
{
var destination = reservation.Destination;
if (string.IsNullOrWhiteSpace(destination))
{
throw new InvalidDestinatinationException();
}
}
public void ValidateLodgingVacancy(ILodgingReservation reservation)
{
var numberInParty = reservation.Occupants.Count;
var vacancy = new LodgingVacancy();
if (!vacancy.HasVacancy(numberInParty))
{
throw new NoVacancyException();
}
}
public void ValidateLodgingReservation(ILodgingReservation reservation)
{
var departureDate = reservation.DepartureDate;
var returnDate = reservation.ReturnDate;
if (returnDate.HasValue)
{
if (departureDate > returnDate.Value)
{
throw new DateRangeException();
}
}
}
public int GetAgeDiscountEligibility(ILodgingReservation reservation)
{
int?numberOfPayingAge = 0;
foreach (var hotelOccupant in reservation.Occupants)
{
TimeSpan span = (DateTime.Now - hotelOccupant.DateOfBirth);
int ageInYears = (int)(span.Days / 365.25);
if (ageInYears > 5)
{
numberOfPayingAge = numberOfPayingAge + 1;
}
}
return(numberOfPayingAge.Value);
}
public decimal CalculateTotalLodgingFees(ILodgingReservation reservation)
{
decimal?totalFees = 0;
_validation.ValidateLodgingReservation(reservation);
_validation.ValidateLodgingCosts(reservation);
_validation.ValidateLodgingDestination(reservation);
_validation.ValidateLodgingVacancy(reservation);
if (reservation.FeesPerPerson.HasValue)
{
var ageDiscountEligible = GetAgeDiscountEligibility(reservation);
totalFees = reservation.FeesPerPerson.Value * reservation.Occupants.Count;
var adjustedFees = reservation.FeesPerPerson.Value * ageDiscountEligible;
}
return((decimal)totalFees);
}
