public IEnumerable <WinningBid> GenerateNextSequenceOfBidsAfter(Offer offer, WinningBid currentWinningBid)
{
var bids = new List <WinningBid>();
if (currentWinningBid.MaximumBid.IsGreaterThanOrEqualTo(offer.MaximumBid))
{
var bidFromOffer = new WinningBid(offer.Bidder, offer.MaximumBid, offer.MaximumBid, offer.TimeOfOffer);
bids.Add(bidFromOffer);
bids.Add(CalculateNextBid(bidFromOffer, new Offer(currentWinningBid.Bidder, currentWinningBid.MaximumBid, currentWinningBid.TimeOfBid)));
}
else
{
if (currentWinningBid.HasNotReachedMaximumBid())
{
var currentBiddersLastBid = new WinningBid(currentWinningBid.Bidder, currentWinningBid.MaximumBid, currentWinningBid.MaximumBid, currentWinningBid.TimeOfBid);
bids.Add(currentBiddersLastBid);
bids.Add(CalculateNextBid(currentBiddersLastBid, offer));
}
else
{
bids.Add(new WinningBid(offer.Bidder, currentWinningBid.CurrentAuctionPrice.BidIncrement(), offer.MaximumBid, offer.TimeOfOffer));
}
}
return(bids);
}
private void Place(WinningBid newBid)
{
if (!FirstOffer() && WinningBid.WasMadeBy(newBid.Bidder))
{
DomainEvents.Raise(new OutBid(Id, WinningBid.Bidder));
}
WinningBid = newBid;
DomainEvents.Raise(new BidPlaced(Id, newBid.Bidder, newBid.CurrentAuctionPrice.Amount, newBid.TimeOfBid));
}
private WinningBid CalculateNextBid(WinningBid winningbid, Offer offer)
{
WinningBid bid;
if (winningbid.CanBeExceededBy(offer.MaximumBid))
{
bid = new WinningBid(offer.Bidder, offer.MaximumBid, winningbid.CurrentAuctionPrice.BidIncrement(), offer.TimeOfOffer);
}
else
{
bid = new WinningBid(offer.Bidder, offer.MaximumBid, offer.MaximumBid, offer.TimeOfOffer);
}
return(bid);
}
public void PlaceBidFor(Offer offer, DateTime currentTime)
{
if (StillInProgress(currentTime))
{
if (FirstOffer())
{
PlaceABidForTheFirst(offer);
}
else if (BidderIsIncreasingMaximumBidToNew(offer))
{
WinningBid = WinningBid.RaiseMaximumBidTo(offer.MaximumBid);
}
else if (WinningBid.CanBeExceededBy(offer.MaximumBid))
{
var newBids = new AutomaticBidder().GenerateNextSequenceOfBidsAfter(offer, WinningBid);
foreach (var bid in newBids)
{
Place(bid);
}
}
}
}
private bool BidderIsIncreasingMaximumBidToNew(Offer offer)
{
return(WinningBid.WasMadeBy(offer.Bidder) && offer.MaximumBid.IsGreaterThan(WinningBid.MaximumBid));
}