public List<Tuple<string, List<Product>>> GetMostExpensivetProductsPerProvider(ShoppingCart shoppingCart, List<Provider> providers, int numOfItemsToTake)
{
return (from provider in providers
let mostExpensieveProducts = provider.Products.Intersect(shoppingCart.Products)
.OrderByDescending(p => p.Price)
.Take(3).ToList()
select new Tuple<string, List<Product>>(provider.Name, mostExpensieveProducts)).ToList();
}
public List<Tuple<string, List<Product>>> GetCheapestProductsPerProvider(ShoppingCart shoppingCart, List<Provider> providers, int numOfItemsToTake)
{
return (from provider in providers
let cheapestProducts = provider.Products.Intersect(shoppingCart.Products)
.OrderBy(p => p.Price)
.Take(numOfItemsToTake).ToList()
select new Tuple<string, List<Product>>(provider.Name, cheapestProducts)).ToList();
}
public List<Tuple<string, double>> GetCartsTotalPrices(ShoppingCart shoppingCart, List<Provider> providers)
{
return (from provider in providers
let sum = (from product in shoppingCart.Products
let productPrice = provider.Products.Find(p => p.ItemCode == product.ItemCode).Price
select productPrice*product.Amount).Sum()
select new Tuple<string, double>(provider.Name, sum)).ToList();
}
public WiseCartManager()
{
ShoppingCart = new ShoppingCart();
Providers = new List<Provider>();
AllProvidersIntersected = new Provider("Intersected");
ProvidersXDocuments = new Dictionary<string, XDocument>();
XmlFilesPath = @"..\..\..\Resources\ProvidersXml";
XmlFilesPaths = Directory.GetFiles(XmlFilesPath).ToList();
}
public void LoadCart()
{
XmlSerializer deserializer = new XmlSerializer(typeof(ShoppingCart));
if (File.Exists(CartXmlPath))
{
using (TextReader reader = new StreamReader(CartXmlPath))
{
ShoppingCart = (ShoppingCart)deserializer.Deserialize(reader);
}
}
else
{
Debug.WriteLine("File missing");
}
}
public CartSerializer(ShoppingCart shoppingCart)
{
CartXmlPath = Environment.CurrentDirectory + @"\..\..\..\Resources\UserCart.xml";
ShoppingCart = shoppingCart;
}