public IActionResult Calculate(CalculatorViewModel model)
{
if (model == null)
{
throw new ArgumentNullException("model", "Argument cannot be null");
}
var operation = model.Operator;
if (operation == CalculatorConstants.OperatorAdd)
{
//perform add
model.ResultValue = _Calculatorservice.Add(model.Value1, model.Value2);
model.IsResultValid = true;
model.Message = CalculatorConstants.Message_Success;
PopulateOperators(model, operation);
return(View("Index", model));
}
else if (operation == CalculatorConstants.OperatorDivide)
{
if (model.Value2 == 0)
{
model.Value2 = 0;
model.IsResultValid = false;
model.Message = CalculatorConstants.Message_CantDivideByZero;
PopulateOperators(model, operation);
}
else
{
model.ResultValue = new Calculator().Divide(model.Value1, model.Value2);
model.Message = CalculatorConstants.Message_Success;
model.IsResultValid = true;
PopulateOperators(model, operation);
}
return(View("Index", model));
}
else if (operation == CalculatorConstants.OperatorSubtract)
{
var newoperation = CalculatorConstants.OperatorSubtract;
model.ResultValue = _Calculatorservice.Subtract(model.Value1, model.Value2);
model.IsResultValid = true;
model.Message = CalculatorConstants.Message_Success;
PopulateOperators(model, newoperation);
return(View("Index", model));
}
else if (operation == CalculatorConstants.OperatorMultiply)
{
var newoperation = CalculatorConstants.OperatorMultiply;
model.ResultValue = _Calculatorservice.Multiply(model.Value1, model.Value2);
model.IsResultValid = true;
model.Message = CalculatorConstants.Message_Success;
PopulateOperators(model, newoperation);
return(View("Index", model));
}
return(View(model));
}
