public async Task <AccountCreditCard> AddAccountAsync(AccountCreditCard account)
{
var creditCard = await _accountContext.FindAsync <CreditCard>(account.CreditCardNumber).ConfigureAwait(false);
if (creditCard == null)
{
throw new InvalidCreditCardException("Credit Card Number Invalid");
}
var accountCreditCard = await _accountContext.AccountCreditCards
.FirstOrDefaultAsync <AccountCreditCard>(x => x.Name.Equals(account.Name) && x.CreditCardNumber.Equals(account.CreditCardNumber))
.ConfigureAwait(false);
if (accountCreditCard == null)
{
_accountContext.AccountCreditCards.Add(account);
await _accountContext.SaveChangesAsync().ConfigureAwait(false);
}
return(account);
}