public ActionResult Index(GameParameters parameters)
        {
            var model = new IndexViewModel { Parameters = parameters };

            if (model.IsValid())
            {
                var game = new GameGenerator();
                var gameGeneratorParameters = MapGameParametersToGameGeneratorParameters(parameters);
                var cards = game.GetGameCards(gameGeneratorParameters);

                switch (parameters.SortBy)
                {
                    case "Cost":
                        model.Cards = cards.OrderBy(x => x.Cost).ToList();
                        break;
                    case "Name":
                        model.Cards = cards.OrderBy(x => x.Name).ToList();
                        break;
                    case "Set":
                        model.Cards = cards.OrderBy(x => x.Set).ToList();
                        break;
                    default:
                        model.Cards = cards.ToList();
                        break;
                }
            }
            return View(model);
        }
        public ActionResult Index()
        {
            var model = new IndexViewModel {Parameters = new GameParameters()};

            return View(model);
        }