public static List <IPricingRule> GetPricingRulesGivenInTheChallenge()
{
var items = GetItemsGivenInTheChallenge();
var ruleB = new NItemsForXPricingRule(items[1], 2, 20);
var ruleC = new NItemsForXPricingRule(items[2], 3, 10);
var ruleD = new Buy1Get1FreePricingRule(items[3]);
var ruleE = new NItemsForThePriceOfXItemsPricingRule(items[4], 3, 2);
return(new List <IPricingRule> {
ruleB, ruleC, ruleD, ruleE
});
}
// This simple console app is an example of how the interface may be used
static void Main(string[] args)
{
// Create the items that were given in the challenge
var itemA = new Item {
Id = 'A', Price = 8
};
var itemB = new Item {
Id = 'B', Price = 12
};
var itemC = new Item {
Id = 'C', Price = 4
};
var itemD = new Item {
Id = 'D', Price = 7
};
var itemE = new Item {
Id = 'E', Price = 5
};
// Create the rules for the items that were given in the challenge
// A doesn't have a pricing rule that would apply a discount so we skip it
var ruleB = new NItemsForXPricingRule(itemB, 2, 20);
var ruleC = new NItemsForXPricingRule(itemC, 3, 10);
var ruleD = new Buy1Get1FreePricingRule(itemD);
var ruleE = new NItemsForThePriceOfXItemsPricingRule(itemE, 3, 2);
var pricingRules = new List <IPricingRule> {
ruleB, ruleC, ruleD, ruleE
};
// Initialize our UnidaysDiscountChallenge with the set of pricing rules
var example = new UnidaysDiscountChallenge(pricingRules);
// Add some items to the basket
example.AddToBasket(itemD);
example.AddToBasket(itemD);
// Get amount to pay
var result = example.CalculateTotalPrice();
var totalPrice = result.Total;
var deliveryCharge = result.DeliveryCharge;
var overallTotal = totalPrice + deliveryCharge;
Console.WriteLine("Items in the basket: DD");
Console.WriteLine($"\nPrice after discounts: £{totalPrice:0.00}");
Console.WriteLine($"Delivery charge: £{deliveryCharge:0.00}");
Console.WriteLine($"Overall total: £{overallTotal:0.00}");
}
