public async Task <MakeBetResponseDto> MakeBet(MakeBet cmd, string ipAddress)
{
var validationResult = CheckBets.IsValid(cmd.Bet);
if (!validationResult.getIsValid())
{
throw new BadRequestException(Constants.InvalidBetExceptionTest);
}
var user = await _dbHelper.GetUserAsync(_securityService.CurrentUser.Id, User.ControlFlags.Basic | User.ControlFlags.Bets);
if (user.RowVersion != cmd.RowVersion)
{
throw new ConcurrencyException();
}
var winningNumber = new Random().Next(0, 36);
var(spinId, won, wonAmount) = user.MakeBat(cmd, CheckBets.EstimateWin, winningNumber, validationResult.getBetAmount(), ipAddress);
await _dbHelper.UpdateUserAsync(user, cmd.RowVersion);
return(new MakeBetResponseDto
{
WinningNumber = winningNumber,
Won = won,
SpinId = spinId,
WonAmount = wonAmount,
});
}
public delegate int EstimateWin(string bet, int winingNumber); // Using delegate to decouple domain logic to external lib and to test better
public (Guid spinId, bool won, decimal?wonAmount) MakeBat(MakeBet cmd, EstimateWin estimateWin, int winningNumber, long betAmount, string ipAddress)
{
if (betAmount > Balance)
{
throw new BadRequestException(Constants.NotEnoughBalanceExceptionText);
}
var estWin = estimateWin(cmd.Bet, winningNumber);
var won = estWin > 0;
var wonAmount = won ? estWin : default(int?);
var spinId = Guid.NewGuid();
Balance = won ? Balance - betAmount + estWin : Balance - betAmount;
if (Bets == null)
{
Bets = new List <UserBet>();
}
Bets.Add(new UserBet
{
UserId = Id,
Bet = cmd.Bet,
Amount = betAmount,
WonAmount = wonAmount,
SpinId = spinId,
Won = won,
WinningNumber = winningNumber,
IpAddress = ipAddress,
DateCreated = DateTime.Now
});
BetMade = true;
return(spinId, won, wonAmount);
}
public async Task <ActionResult <MakeBetResponseDto> > MakeBet([FromBody] MakeBet cmd) => Ok(await _service.MakeBet(cmd, Request.HttpContext.Connection.RemoteIpAddress.ToString()));
