public IActionResult Spin(SlotMachineSpinReq model)
{
var response = _slotMachineService.Spin(model);
if (response == null)
{
return(BadRequest(new { message = "User do not exist or not enough balance" }));
}
return(Ok(response));
}
public SlotMachineSpinRes Spin(SlotMachineSpinReq model)
{
List <SlotSymbol> symbolsList = new List <SlotSymbol>();
var user = _context.Users
.Where(u => u.Id == model.UserId)
.SingleOrDefault();
//Check if user exists and have enough balance for the spin
if (user.Balance < model.Bet)
{
return(null);
}
//Remove the bet from user's balance
user.Balance -= model.Bet;
_context.SaveChanges();
//Fill list with random symbols based on certain odds
for (var i = 0; i < 9; i++)
{
symbolsList.Add(getSymbolFromRandomNumber());
}
//Calculate reward(winning) from the spin
var reward = calculateReward(symbolsList, model.Bet);
//DB object to insert in 'SlotMachineSpins'
var dbSpinData = new SlotMachineSpin {
Id = 0,
Time = DateTime.Now,
User = user,
Game = model.Game,
Bet = model.Bet,
Reward = reward
};
//Insert the object
_context.SlotMachineSpins.Add(dbSpinData);
_context.SaveChanges();
//Add reward from the spin to user's balance
user.Balance += reward;
_context.SaveChanges();
//Return slot symbols to display in FE and the reward(winning)
return(new SlotMachineSpinRes {
SymbolsList = symbolsList,
Reward = reward
});
}