public virtual decimal GetBalance(GiftCardInfo card)
{
Assert.ArgumentNotNull(card, "card");
var match = Assert.ResultNotNull(FindCard(card), InvalidCardMessage);
return(match != null ? match.Balance : 0);
}
public virtual void Credit(GiftCardInfo card, decimal amount)
{
Assert.ArgumentNotNull(card, "card");
Assert.ArgumentNotNull(amount, "amount");
var match = Assert.ResultNotNull(FindCard(card), InvalidCardMessage);
match.Balance += amount;
Repository.Flush();
}
public virtual void Debit(GiftCardInfo card, decimal amount)
{
Assert.ArgumentNotNull(card, "card");
Assert.ArgumentNotNull(amount, "amount");
var match = Assert.ResultNotNull(FindCard(card), InvalidCardMessage);
Assert.IsTrue(match.Balance >= amount, InsufficientBalanceMessage);
match.Balance -= amount;
Repository.Flush();
}
protected virtual GiftCard FindCard(GiftCardInfo card)
{
Assert.ArgumentNotNull(card, "card");
var match = Repository.GetAll().FirstOrDefault(x => x.Number == card.CardNumber);
// if pin exists, also match on that
if (match != null && !string.IsNullOrWhiteSpace(match.Pin) && card.Pin != match.Pin)
{
return(null);
}
return(match);
}
public virtual bool Validate(GiftCardInfo card)
{
Assert.ArgumentNotNull(card, "card");
return(FindCard(card) != null);
}
