public IActionResult Index(string expressionOperation = null)
{
var success = Enum.TryParse(expressionOperation
?? ExpressionOperation.Addition.ToString(),
out ExpressionOperation chosenOperation);
if (!success)
{
chosenOperation = ExpressionOperation.Addition;
}
var model = new IndexViewModel();
model.InitializeSelectLists(
this.expressionExtractor.Extract(new List <ExpressionOperation> {
chosenOperation
}),
this.HttpContext.GetLanguageFromCookie());
model.ChosenExpressionOperation = chosenOperation.ToString();
return(View(model));
}
public async Task <IActionResult> Index(IndexViewModel model)
{
if (model.SelectedVariableSymbol.IsNotNullOrWhiteSpace())
{
Constants.VariableSymbol = model.SelectedVariableSymbol;
}
model.InitializeSelectLists(
this.expressionExtractor.Extract(new List <ExpressionOperation>
{
Enum.Parse <ExpressionOperation>(model.ChosenExpressionOperation)
}),
this.HttpContext.GetLanguageFromCookie());
if (!this.ModelState.IsValid)
{
return(View(model));
}
var chosenExpressionType = Assembly
.GetAssembly(typeof(IMathExpression))
.GetType(model.ChosenExpressionType);
var mathExpressions = this.mathService.GenerateMathExpressions(
chosenExpressionType,
model.OperandMinValue,
model.OperandMaxValue,
model.ExpressionsCount,
model.ShouldRandomize,
model.SelectedVariableSymbol);
if (mathExpressions.Any())
{
await this.sessionContainer.AddAsync(this.HttpContext, mathExpressions);
}
return(View(model));
}
