public void Initiate()
{
var modifyPrice = new ModifyPrice(); // Invoker
var product = new Product("Phone", 500); // Reciever
WriteLine("Starting price for the Phone product is 500$.");
// Commands
Execute(modifyPrice, new ProductCommand(product, PriceAction.Increase, 100));
Execute(modifyPrice, new ProductCommand(product, PriceAction.Increase, 50));
Execute(modifyPrice, new ProductCommand(product, PriceAction.Decrease, 800));
Execute(modifyPrice, new ProductCommand(product, PriceAction.Decrease, 25));
WriteLine(product);
WriteLine();
WriteLine("UnDoing The Changes...");
Thread.Sleep(2000);
// Introducing the undo action using command pattern
modifyPrice.UndoActions();
WriteLine(product);
}
public static void Main()
{
var modifyPrice = new ModifyPrice();
var product = new Product("Phone", 500);
Execute(product, modifyPrice, new ProductCommand(product, PriceAction.Increase, 100));
Execute(product, modifyPrice, new ProductCommand(product, PriceAction.Increase, 50));
Execute(product, modifyPrice, new ProductCommand(product, PriceAction.Decrease, 25));
Console.WriteLine(product);
}
/// <summary>
/// Execute Commands by Invoker
/// </summary>
/// <param name="modifyPrice"></param>
/// <param name="productCommand"></param>
private static void Execute(ModifyPrice modifyPrice, ICommand productCommand)
{
modifyPrice.SetCommand(productCommand);
modifyPrice.Invoke();
}
