using System;
using System.Globalization;
using System.Web.Http.Controllers;
using System.Web.Http.ModelBinding;
using System.Web.Http.ValueProviders;

namespace Kreta.Web.ModelBinder
{
    public class IntegerModelBinder : IModelBinder
    {
        public bool BindModel(HttpActionContext actionContext, ModelBindingContext bindingContext)
        {
            ValueProviderResult valueResult = bindingContext.ValueProvider.GetValue(bindingContext.ModelName);
            var modelState = new ModelState { Value = valueResult };
            bindingContext.ModelState[bindingContext.ModelName] = modelState;

            if ((valueResult != null) && !(string.IsNullOrWhiteSpace(valueResult.AttemptedValue) && (bindingContext.ModelType == typeof(int?))))
            {
                try
                {
                    bindingContext.Model = int.Parse(valueResult.AttemptedValue, NumberStyles.Number, CultureInfo.CreateSpecificCulture("hu-HU"));
                }
                catch (FormatException e)
                {
                    modelState.Errors.Add(e);
                    return false;
                }
            }
            return true;
        }
    }
}