public bool ExecuteTransaction(Func <long, bool> condition, Action <RefLong> ifTrue, Action <RefLong> ifFalse = null)
{
lock (_balance)
{
bool conditionResult = condition(_balance.Value);
RefLong dummyBalance = new RefLong(_balance.Value);
if (conditionResult)
{
ifTrue(dummyBalance);
}
else
{
ifFalse?.Invoke(dummyBalance);
}
if (_balance.Value != dummyBalance.Value)
{
_balance.Value = dummyBalance.Value;
_userService.SaveChanges(UserId, _balance.Value);
}
return(conditionResult);
}
}
public Balance(string userId, long balance, UserService userService)
{
UserId = userId;
_balance = new RefLong(balance);
_userService = userService;
}