/// <summary>
/// Used to calculate price for a given day
/// </summary>
/// <param name="priceToCalculate">price with date information for calculation</param>
/// <param name="promotionsAvailable">available promotions to check for calculating</param>
/// <returns>Calculated price with names for the day</returns>
public virtual IPromotable CalculatePriceForDate(List<Promotion> promotionsAvailable, IPromotable priceToCalculate)
{
// no promotions for business, return what was sent in
if (promotionsAvailable == null ||
!promotionsAvailable.Any())
{
return priceToCalculate;
}
// logic here
IEnumerable<Promotion> validPromos =
promotionsAvailable.Where(p => IsPromotionAvailable(p, priceToCalculate));
// work out best discount if promotions available
if (validPromos.Any())
{
// get the Maximum promo discount promotion
var maxPromo = validPromos.Aggregate((vp, x) => (vp == null || x.Discount > vp.Discount ? x : vp));
var newRate = priceToCalculate.Rate * (1 - (maxPromo.Discount / 100));
priceToCalculate.WasRate = priceToCalculate.Rate;
priceToCalculate.Rate = newRate;
priceToCalculate.PromoName = string.IsNullOrWhiteSpace(maxPromo.DisplayName) ? maxPromo.Name : maxPromo.DisplayName;
priceToCalculate.Discount = maxPromo.Discount;
}
return priceToCalculate;
}
/// <summary>
/// Used to calculate price for a given day
/// </summary>
/// <param name="businessId">business id for these prices</param>
/// <param name="priceToCalculate">price with date information for calculation</param>
/// <returns>Calculated price with names for the day</returns>
public IPromotable CalculatePriceForDate(long businessId, IPromotable priceToCalculate)
{
// Get promos for the given business
// Using Cache, which will be thread safe
// Will filter later
var cache = Cache.Cache.PromoCache;
List<Promotion> promos = cache.TryGetValue(businessId);
return CalculatePriceForDate(promos, priceToCalculate);
}
/// <summary>
/// Checks Rate Plan
/// Status
/// Booking Window
/// DayOfWeek
/// </summary>
/// <remarks>
/// Change for date checks
/// </remarks>
/// <param name="promo">promotion to check</param>
/// <param name="price">price to check</param>
/// <returns>true if available for this price</returns>
private bool IsPromotionAvailable(Promotion promo, IPromotable price)
{
return promo.Status.Type == PromotionStatusEnum.Active &&
promo.AssociatedRatePlanIds != null &&
promo.AssociatedRatePlanIds.Any(i => i == price.RatePlanId) &&
IsPromotionInWindow(promo, price.Date) &&
IsPromotionStayDateValid(promo, price.Date) &&
IsPromotionValidOnDay(promo, price.Date);
}
public void CalculatePriceForDateDoesCorrectCalculationForGivenPromotions(List<Promotion> promotionsAvailable,
IPromotable price,
IPromotable resultPrice)
{
// Arrange done in test case
// Act
var calculatedPrice = promoCalculator.CalculatePriceForDate(promotionsAvailable, price);
// Assert
Assert.AreEqual(resultPrice.RoomTypeId, calculatedPrice.RoomTypeId, "Roomtype did not match");
Assert.AreEqual(resultPrice.RatePlanId, calculatedPrice.RatePlanId, "Rateplan did not match");
Assert.AreEqual(resultPrice.PromoName, calculatedPrice.PromoName, "Promo name did not match");
Assert.AreEqual(resultPrice.Rate, calculatedPrice.Rate, "price did not match");
Assert.AreEqual(resultPrice.WasRate, calculatedPrice.WasRate, "was price did not match");
Assert.AreEqual(resultPrice.Discount, calculatedPrice.Discount, "Discount did not match");
}
