/// <summary>
/// Checks if the order is valid.
/// The quantity of the ordered article has to be more than 0 and less than 10000.
/// </summary>
/// <param name="order">The order</param>
/// <returns>True, if order is valid</returns>
public static bool IsValidOrder(Order order)
{
bool isValid = true;
if (order.Quantity < 1 || order.Quantity > 10000)
{
isValid = false;
}
return isValid;
}
private static bool CalculatePrice(Order order)
{
bool result = true;
var priceCalculation = new PriceCalculation();
var price = priceCalculation.CalculatePrice(order.ArticleId, order.Quantity);
if (price == -1m)
{
result = false;
}
return result;
}
/// <summary>
/// This method is a facade which simplifies the placement of an order.
/// It orchestrates the steps needed to place an order.
/// The OrderPlacement process consists of a validation, price calculation and the storage of the order.
/// </summary>
/// <param name="articleId">The article id</param>
/// <param name="quantity">The quantity</param>
/// <returns>True if order was succesfully stored and will be shipped</returns>
public bool PlaceOrder(string articleId, int quantity)
{
Order order = new Order
{
ArticleId = articleId,
Quantity = quantity
};
// Validate order
bool result = OrderValidator.IsValidOrder(order);
// Calculate Price
result = result && CalculatePrice(order);
// Place Order
result = result & OrderStorage.PlaceOrder(order);
return result;
}
/// <summary>
/// Dummy implementation which represents the order placing
/// </summary>
/// <param name="order">The order to store</param>
/// <returns>True, if order has been successfully placed</returns>
public static bool PlaceOrder(Order order)
{
// Store Order for further processing
return true;
}
