/// <summary>
/// Calculates the cost of the specified optional services.
/// </summary>
/// <param name="rentalPeriod">The period of rental.</param>
/// <param name="unit">The type of unit the customer will be staying in.</param>
/// <param name="services">The optional services the customer has selected.</param>
/// <returns>The cost of the optional services in USD.</returns>
public static decimal OptionalServicesCost(TimeSpan rentalPeriod, RentalUnit unit, OptionalServices services)
{
decimal cost = 0;
// Maid service is $100/day
if ((services & OptionalServices.Maid) == OptionalServices.Maid)
{
cost += 100 * rentalPeriod.Days;
}
// The penthouse has 4 bedrooms; the cost is $20/day per bedroom, so we multiply by 4 bedrooms
// if the penthouse was selected, otherwise just multiply by 1 bedroom
if ((services & OptionalServices.Linen) == OptionalServices.Linen)
{
cost += 20 * rentalPeriod.Days * (unit == RentalUnit.Penthouse ? 4 : 1);
}
// Limo service is $75/day
if ((services & OptionalServices.Limo) == OptionalServices.Limo)
{
cost += 75 * rentalPeriod.Days;
}
return cost;
}
/// <summary>
/// Calculates the customer's total bill for the rental period with the unit and services selected.
/// </summary>
/// <param name="rentalPeriod">The period of rental.</param>
/// <param name="unit">The type of unit the customer will be staying in.</param>
/// <param name="services">The optional services the customer has selected.</param>
/// <returns>The customer's total bill in USD.</returns>
public static decimal CalculateTotal(TimeSpan rentalPeriod, RentalUnit unit, OptionalServices services)
{
// Cost of the unit for the amount of days in the rental period
decimal totalCost = (RentalCalculator.WeeklyUnitPrice(unit) / 7) * rentalPeriod.Days;
// If they're renting for 3 months or more, give them a 20% discount
if (rentalPeriod.Days >= 90)
{
totalCost *= 0.8m;
}
totalCost += RentalCalculator.OptionalServicesCost(rentalPeriod, unit, services);
return totalCost * (1 + RentalCalculator.TaxRate);
}
/// <summary>
/// Calculates the cost to rent the specified unit for one week.
/// </summary>
/// <param name="unit">The unit to rent.</param>
public static decimal WeeklyUnitPrice(RentalUnit unit)
{
switch (unit)
{
case RentalUnit.Studio:
return 1000;
case RentalUnit.TwoBedroomSuite:
return 2000;
case RentalUnit.ThreeBedroomSuite:
return 3000;
case RentalUnit.Penthouse:
return 15000;
default:
return 0;
}
}