/// <summary>
/// Increments the quantity of a product in the shopping cart
/// </summary>
/// <param name="product">The Product whose quantity to increment</param>
public OrderDetail IncrementProduct(ProductBase product)
{
OrderDetail orderDetail = Order.OrderDetails.Find(p => p.Product.Id == product.Id);
if (orderDetail == null)
{
throw new Exception("Product is not in shopping cart!");
}
orderDetail.Quantity++;
UpdateShippingCharges();
return(orderDetail);
}
/// <summary>
/// Removes all quantities of a product in the shopping cart, clears all promocodes if no items remain
/// </summary>
/// <param name="product">The Product to remove</param>
public void RemoveProduct(ProductBase product)
{
OrderDetail orderDetail = Order.OrderDetails.Find(p => p.Product.Id == product.Id);
if (!(orderDetail == null))
{
Order.OrderDetails.Remove(orderDetail);
}
if (Order.OrderDetails.Count == 0)
{
PromoCodes.Clear();
}
}
/// <summary>
/// Decrements the quantity of a product in the shopping cart, removes if none remaining after decrement
/// </summary>
/// <param name="product">The Product whose quantity to decrement</param>
public OrderDetail DecrementProduct(ProductBase product)
{
OrderDetail orderDetail = Order.OrderDetails.Find(p => p.Product.Id == product.Id);
if (!(orderDetail == null) && orderDetail.Quantity > 0)
{
orderDetail.Quantity--;
}
if (orderDetail.Quantity == 0)
{
RemoveProduct(product);
}
UpdateShippingCharges();
return(orderDetail);
}
/// <summary>
/// Adds a product to the shopping cart
/// </summary>
/// <param name="product">The Product to add</param>
public void AddProduct(ProductBase product)
{
if (Order.OrderDetails.Exists(p => p.Product.Id == product.Id))
{
throw new Exception("Product is already in shopping cart!");
}
var orderDetail = new OrderDetail()
{
Product = product,
PlacedInCart = DateTime.Now,
Quantity = 1,
UnitPrice = product.Price,
Shipping = product.Shipping
};
Order.OrderDetails.Add(orderDetail);
UpdateShippingCharges();
}