public void PlaceBid(Guid userId, uint amount)
{
if (userId == Guid.Empty)
{
throw new ArgumentNullException("userId");
}
uint currentPrice = GetCurrentPrice();
if (amount <= currentPrice)
{
throw new ArgumentException("Amount is too low");
}
var bidPlacedEvent = new BidPlaced()
{
AuctionId = Id,
Time = DateTime.Now,
Amount = amount,
UserId = userId
};
base.RaiseEvent(bidPlacedEvent);
}
private void OnBidPlaced(BidPlaced bidPlacedEvent)
{
var bid = new Bid(bidPlacedEvent.UserId, bidPlacedEvent.Amount, bidPlacedEvent.Time);
_bids.Add(bid);
}
