private ContainableItem VerifyCollection(int id)
{
if (collection.Count < 1)
{
throw new Exception("Collection is empty!");
}
ContainableItem toDispense = collection.FindByID(id);
if (toDispense == null)
{
throw new NullReferenceException();
}
return(toDispense);
}
public void Add(ContainableItem added)
{
if (head == null)
{
head = new Node();
head.next = null;
head.item = added;
current = head;
}
else
{
Node newNode = new Node();
newNode.item = added;
newNode.next = null;
current.next = newNode;
current = newNode;
}
count++;
}
public void Remove(ContainableItem removed)
{
Node temp = head;
Node prev = new Node();
if (count <= -1)
{
throw new NullReferenceException();
}
if (removed.Equals(head.item))
{
head = head.next;
count--;
return;
}
for (int i = 0; i < count; i++)
{
if (!temp.item.Equals(removed))
{
prev = temp;
temp = temp.next;
}
else
{
prev.next = temp.next;
count--;
break;
}
}
if (removed.Equals(current.item))
{
current = temp;
current.next = null;
count--;
return;
}
}
public void RemoveByPosition(Position position)
{
Node element = head;
if (count <= -1)
{
throw new NullReferenceException();
}
if (element.item.position.Equals(position))
{
ContainableItem toDelete = element.item;
Remove(toDelete);
return;
}
while (element.next != null)
{
if (element.item.position.Equals(position))
{
ContainableItem toDelete = element.item;
Remove(toDelete);
}
else
{
element = element.next;
}
}
if (element == current && element.item.position.Equals(position))
{
ContainableItem toDelete = element.item;
Remove(toDelete);
}
else if (element == current && !element.item.position.Equals(position))
{
throw new Exception("Element not found!");
}
}
static void Main(string[] args)
{
ContainableItemsCollection col = new ContainableItemsCollection();
ProductCategory candyCategory = new ProductCategory("Candy");
ProductCategory utilityCategory = new ProductCategory("Utility");
Product candybar = new Product("Candybar", 10, 5, candyCategory);
Product bubblegum = new Product("Bubblegum", 5, 10, candyCategory);
Product toothpick = new Product("Toothpick", 1.1m, 900, utilityCategory);
ContainableItem first = new ContainableItem(new Position(0, 0, 1, 0), candybar);
ContainableItem second = new ContainableItem(new Position(0, 1, 2, 1), bubblegum);
ContainableItem third = new ContainableItem(new Position(0, 2, 1, 2), toothpick);
col.Add(first);
col.Add(second);
col.Add(third);
Dispenser dispenser = new Dispenser(col);
PaymentTerminal terminal = new PaymentTerminal(dispenser);
Console.WriteLine();
Console.WriteLine("Select a product (insert ID):");
for (int index = 0; index < col.Count; index++)
{
Console.WriteLine($"{col[index].position.id}:{col[index].product.Name}");
}
int choice = Int32.Parse(Console.ReadLine());
decimal amountToPay = col.FindByID(choice).product.Price;
Console.WriteLine();
System.Console.WriteLine("1.Pay with Credit Card");
System.Console.WriteLine("2.Pay with Coins");
System.Console.WriteLine("Select the desired payment method");
int paymentChoice = Int32.Parse(Console.ReadLine());
switch (paymentChoice)
{
case 1:
System.Console.WriteLine("Insert your credit card pin:");
int pin = Int32.Parse(Console.ReadLine());
CreditCard card = new CreditCard(pin);
Payment payment = new CreditCardPayment(amountToPay, card);
System.Console.WriteLine("Confirm your credit card pin:");
(decimal, bool)result = terminal.Pay(choice, payment);
decimal change = result.Item1;
if (result.Item2)
{
System.Console.WriteLine("Payment succeeded!");
}
else
{
System.Console.WriteLine("Payment failed!");
}
System.Console.WriteLine($"Your change is :{change}");
break;
case 2:
System.Console.WriteLine("How many coins do you have in your wallet:");
int nrOfCoins = Int32.Parse(Console.ReadLine());
System.Console.WriteLine("How much does one coin value:");
int coinValue = Int32.Parse(Console.ReadLine());
payment = new CoinPayment(amountToPay, nrOfCoins, coinValue);
result = terminal.Pay(choice, payment);
change = result.Item1;
if (result.Item2)
{
System.Console.WriteLine("Payment succeeded!");
}
else
{
System.Console.WriteLine("Payment failed!");
}
System.Console.WriteLine($"Your change is :{change}");
break;
default:
System.Console.WriteLine("Please press 1 or 2");
break;
}
DataAcquisition.Instance.ExportToCSV();
Console.ReadKey();
}
public Product GetProduct(int id)
{
ContainableItem toDispense = VerifyCollection(id);
return(toDispense.product);
}
private void Dispense(int id)
{
ContainableItem toDispense = VerifyCollection(id);
toDispense.product.Quantity--;
}