public string RegisterOrder(string username, Book[] books, string creditcard, ContactDetails shipping, ContactDetails invoicing)
{
string guid = null;
if (Order.VerifyCreditCard(creditcard) == true)
{
int i = 0;
bool verifybook = true;
Library lib = new Library();
lib.UpdateDB();
while (i < books.Length && verifybook == true)
{
verifybook = lib.Contains(books[i++]);
}
if (verifybook == true)
{
Order toregister = new Order(shipping, invoicing, creditcard, books);
toregister.OrderSerializer();
toregister.OrderStorage(username);
guid = toregister.Ordernumber;
}
}
return guid;
}
