public async Task <IActionResult> AddBuyer([FromBody] AddBuyerRequestModel auction)
{
bool success = await _service.AddBuyer(auction.AuctionId, auction.Buyer);
if (success)
{
await _hubContext.Clients.All.SendAsync("AddBuyer", JsonConvert.SerializeObject(auction));
return(Ok());
}
return(BadRequest());
}