//BiddingForSingleAuction
/// <summary>
/// Add bid, resolve proxy bidding situation
/// </summary>
/// <returns> 0 - winner, 1 - outbidder, 2 - update bid, 3 - wrong bid</returns>
public byte BiddingForSingleAuction(AuctionDetail auction, BidCurrent currentBid, out BidCurrent previousBid, out BidCurrent loserBid, out BidCurrent winnerBid)
{
long?bid_id = -1;
previousBid = loserBid = winnerBid = null;
List <BidCurrent> allbids = dataContext.spBid_LotBids(auction.LinkParams.ID).ToList();
// no bids
if (!allbids.Any())
{
currentBid.Amount = currentBid.IsProxy ? auction.Price : currentBid.MaxBid;
dataContext.spBid_PlaceBidsForSingleBidding(auction.LinkParams.ID, ref bid_id, currentBid.User_ID, currentBid.Amount,
currentBid.MaxBid, currentBid.DateMade, currentBid.IP,
currentBid.IsProxy, false, currentBid.IsActive, null, null, null,
null, null, null, null, null, null, null, null, currentBid.User_ID,
currentBid.Amount, currentBid.MaxBid);
currentBid.ID = bid_id.GetValueOrDefault(-1);
winnerBid = new BidCurrent(currentBid);
return(0);
}
previousBid = allbids.FirstOrDefault(q => q.User_ID == currentBid.User_ID);
// the duplicate
if (previousBid != null)
{
currentBid.ID = previousBid.ID;
if (previousBid.IsProxy == currentBid.IsProxy && previousBid.MaxBid >= currentBid.Amount)
{
return(3);
}
}
BidCurrent topBid = allbids.First();
// current is highbidder
if (topBid.User_ID == currentBid.User_ID)
{
currentBid.Amount = (!currentBid.IsProxy && currentBid.Amount > topBid.Amount)
? currentBid.Amount
: topBid.Amount;
currentBid.MaxBid = Math.Max(currentBid.MaxBid, topBid.MaxBid);
currentBid.IsProxy = currentBid.Amount <= currentBid.MaxBid;
bid_id = topBid.ID;
dataContext.spBid_PlaceBidsForSingleBidding(auction.LinkParams.ID, ref bid_id, currentBid.User_ID, currentBid.Amount,
currentBid.MaxBid, currentBid.DateMade, currentBid.IP,
currentBid.IsProxy, true, currentBid.IsActive, null, null, null,
null, null, null, null, null, null, null, null, currentBid.User_ID,
currentBid.Amount, currentBid.MaxBid);
currentBid.ID = bid_id.GetValueOrDefault(-1);
previousBid = new BidCurrent(topBid);
winnerBid = new BidCurrent(currentBid);
return(2);
}
decimal amount;
bool isautobid;
// current max bid is bigger than the top bid
if (topBid.MaxBid < currentBid.MaxBid)
{
amount = currentBid.IsProxy ? Math.Min(topBid.Amount + Consts.GetIncrement(topBid.Amount), currentBid.MaxBid) : currentBid.MaxBid;
isautobid = topBid.Amount != topBid.MaxBid;
topBid.Amount = topBid.MaxBid;
currentBid.Amount = !isautobid ? amount : (currentBid.IsProxy ? Math.Min(topBid.Amount + Consts.GetIncrement(topBid.Amount), currentBid.MaxBid) : currentBid.MaxBid);
bid_id = previousBid == null ? -1 : currentBid.ID;
if (isautobid)
{
dataContext.spBid_PlaceBidsForSingleBidding(auction.LinkParams.ID, ref bid_id, currentBid.User_ID, amount, currentBid.MaxBid, currentBid.DateMade, currentBid.IP,
currentBid.IsProxy, false, currentBid.IsActive, currentBid.Amount, currentBid.MaxBid, DateTime.Now,
topBid.ID, topBid.User_ID, topBid.Amount, topBid.MaxBid, topBid.DateMade, DateTime.Now, topBid.IP, topBid.IsProxy,
currentBid.User_ID, currentBid.Amount, currentBid.MaxBid);
}
else
{
dataContext.spBid_PlaceBidsForSingleBidding(auction.LinkParams.ID, ref bid_id, currentBid.User_ID, currentBid.Amount,
currentBid.MaxBid, currentBid.DateMade, currentBid.IP,
currentBid.IsProxy, false, currentBid.IsActive, null, null, null, null, null, null, null, null, null, null, null,
currentBid.User_ID, currentBid.Amount, currentBid.MaxBid);
}
currentBid.ID = bid_id.GetValueOrDefault(-1);
loserBid = new BidCurrent(topBid);
winnerBid = new BidCurrent(currentBid);
return(0);
}
amount = currentBid.IsProxy ? Math.Min(topBid.Amount + Consts.GetIncrement(topBid.Amount), currentBid.MaxBid) : currentBid.MaxBid;
isautobid = amount < currentBid.MaxBid;
currentBid.Amount = currentBid.MaxBid;
bid_id = previousBid == null ? -1 : currentBid.ID;
if (topBid.Amount == topBid.MaxBid || (topBid.Amount > currentBid.Amount && topBid.MaxBid > currentBid.MaxBid))
{
dataContext.spBid_PlaceBidsForSingleBidding(auction.LinkParams.ID, ref bid_id, currentBid.User_ID, amount,
currentBid.MaxBid, currentBid.DateMade, currentBid.IP,
currentBid.IsProxy, false, currentBid.IsActive,
isautobid ? (decimal?)currentBid.Amount : null,
isautobid ? (decimal?)currentBid.MaxBid : null,
isautobid ? (DateTime?)DateTime.Now : null,
null, null, null, null, null, null, null, null, null, null, null);
}
else
{
topBid.Amount = Math.Min(currentBid.MaxBid + Consts.GetIncrement(currentBid.MaxBid), topBid.MaxBid);
dataContext.spBid_PlaceBidsForSingleBidding(auction.LinkParams.ID, ref bid_id, currentBid.User_ID, amount,
currentBid.MaxBid, currentBid.DateMade, currentBid.IP,
currentBid.IsProxy, false, currentBid.IsActive,
isautobid ? (decimal?)currentBid.Amount : null,
isautobid ? (decimal?)currentBid.MaxBid : null,
isautobid ? (DateTime?)DateTime.Now : null,
topBid.ID, topBid.User_ID, topBid.Amount, topBid.MaxBid,
topBid.DateMade, DateTime.Now,
topBid.IP, topBid.IsProxy, topBid.User_ID, topBid.Amount, topBid.MaxBid);
}
currentBid.ID = bid_id.GetValueOrDefault(-1);
loserBid = new BidCurrent(currentBid);
winnerBid = new BidCurrent(topBid);
return(1);
}