/*
* Generate card
* Add card number to list of cards and funds, starting with no funds
* Return the new card
*/
public static Int32 registerCreditCard()
{
ServiceReference1.ServiceClient serviceClient = new ServiceReference1.ServiceClient();
Random rnd = new Random();
bool valid;
Int32 newCard;
string encryptedCard = "";
do
{
valid = true;
newCard = rnd.Next(5000, 10000);
for (int i = 0; i < cardList.Count && valid; i++)
{
if (newCard == Int32.Parse(serviceClient.Decrypt(cardList[i])))
{
valid = false;
}
}
} while (!valid);
encryptedCard = serviceClient.Encrypt(newCard.ToString());
cardList.Add(encryptedCard);
fundsList.Add(0);
return(newCard);
}
/*
* Adds funds and returns true if the creditCard is found, otherwise returns false
*/
public static bool deposit(Int32 creditCardNumber, double amount)
{
ServiceReference1.ServiceClient serviceClient = new ServiceReference1.ServiceClient();
int index = -1;
for (int i = 0; i < cardList.Count && index == -1; i++)
{
if (creditCardNumber == Int32.Parse(serviceClient.Decrypt(cardList[i])))
{
index = i;
}
}
if (index != -1)
{
fundsList[index] += amount;
return(true);
}
else
{
return(false);
}
}
/*Validate orders by checking that the credit card has been registered and that it has sufficient funds*/
public static string validate(Int32 creditCardNumber, double amount)
{
ServiceReference1.ServiceClient serviceClient = new ServiceReference1.ServiceClient();
int index = -1;
for (int i = 0; i < cardList.Count && index == -1; i++)
{
if (creditCardNumber == Int32.Parse(serviceClient.Decrypt(cardList[i])))
{
index = i;
}
}
if (index != -1 && fundsList[index] > amount)
{
fundsList[index] -= amount;
return("valid");
}
else
{
return("not valid");
}
}