static void Main(string[] args)
{
var invoiceService = new InvoiceService();
var inventoryService = new InventoryService();
var history = new CommandHistory();
var products = new List <Product>
{
new Product {
Name = "Soap", Price = 10.00m
},
new Product {
Name = "Juice", Price = 5.99m
},
new Product {
Name = "PaperTowel", Price = 2.99m
},
new Product {
Name = "Yogurt", Price = 4.99m
},
};
var command = new CompositeCommand();
command.Add(new AddProductCommand(products[0], invoiceService, inventoryService, history));
command.Add(new AddProductCommand(products[1], invoiceService, inventoryService, history));
// Option 1 - If a command is undoable then we can just add undo action to revert back
command.Add(new AddProductCommand(products[3], invoiceService, inventoryService, history));
command.Add(new UndoCommand(history)); // First undo to remove last product added
command.Add(new UndoCommand(history)); // Second undo to remove last but one product added
// Option 2 - If a command is not undoable then we can have explicit remove command to revert the changes
command.Add(new AddProductCommand(products[2], invoiceService, inventoryService, history));
command.Add(new RemoveProductCommand(products[2], invoiceService, inventoryService));
var cart = new Cart(command);
cart.OneClickBuy();
System.Console.WriteLine($"You purchased {invoiceService.TotalCountofProducts} item/s and your total price is {invoiceService.TotalPrice}");
System.Console.WriteLine($"The {inventoryService.TotalCountofProducts} item/s purchased will be delivered on {inventoryService.DeliveryDate}");
}
public AddProductCommand(Product product, InvoiceService invoiceService, InventoryService inventoryService, CommandHistory commandHistory)
{
_product = product;
_invoiceService = invoiceService;
_inventoryService = inventoryService;
_commandHistory = commandHistory;
}