public async Task <JsonResult> getAuctionUpdateData(int?id)
{
var auctionToUpdate = await _context.auctions.Include(a => a.winner).FirstOrDefaultAsync(a => a.Id == id);
var bids = await _context.bids.Where(b => b.auctionId == auctionToUpdate.Id).ToListAsync();
UpdatedAuction resultAuction = new UpdatedAuction()
{
currentPrice = auctionToUpdate.currentPrice,
RowVersion = auctionToUpdate.RowVersion,
winnerUsername = auctionToUpdate.winner.UserName,
numberOfBids = bids.Count
};
return(Json(resultAuction));
}
public async Task <JsonResult> Bid(int?id, byte[] rowVersion)
{
if (id == null)
{
return(Json(false));
}
var auctionToUpdate = await _context.auctions.Include(a => a.winner).Include(a => a.owner).FirstOrDefaultAsync(a => a.Id == id);
if (auctionToUpdate == null)
{
return(Json(false));
}
_context.Entry(auctionToUpdate).Property("RowVersion").OriginalValue = rowVersion;
if (await TryUpdateModelAsync <Auction>(auctionToUpdate, "", a => a.currentPrice))
{
try{
User loggedUser = await this._userManager.GetUserAsync(base.User);
if (loggedUser.tokens <= 0)
{
return(Json("ERROR"));
}
auctionToUpdate.currentPrice += incCurrentPrice;
auctionToUpdate.winner = loggedUser;
auctionToUpdate.winnerId = loggedUser.Id;
Bid bid = new Bid()
{
price = auctionToUpdate.currentPrice,
bidDate = DateTime.Now,
user = loggedUser,
userId = loggedUser.Id,
auctionId = auctionToUpdate.Id
};
_context.Add(bid);
loggedUser.tokens -= 1;
await _context.SaveChangesAsync();
auctionToUpdate = await _context.auctions.Include(a => a.winner).Include(a => a.bids).FirstOrDefaultAsync(a => a.Id == id);
UpdatedAuction resultAuction = new UpdatedAuction()
{
currentPrice = auctionToUpdate.currentPrice,
RowVersion = auctionToUpdate.RowVersion,
winnerUsername = auctionToUpdate.winner.UserName,
numberOfBids = auctionToUpdate.bids.Count()
};
return(Json(resultAuction));
}
catch (DbUpdateConcurrencyException ex) {
return(Json(ex));
}
}
return(Json(false));
}
