// http://blog.duc.as/2011/06/07/making-mvc-3-a-little-more-dynamic/

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using System.IO;
using System.Web.Helpers;
using HeuristicLab.Services.Optimization.ControllerService.Model;
using HeuristicLab.Services.Optimization.ControllerService.Parsers;

namespace Mvc3TestApplication.Binders
{
  public class ExperimentJsonAttribute : CustomModelBinderAttribute {
    public override IModelBinder GetBinder() {
      return new ExperimentJsonBinder();
    }
  }

  public class ExperimentJsonBinder : IModelBinder {
    public ExperimentJsonBinder() {
    }

    public object BindModel(ControllerContext controllerCtx, ModelBindingContext bindingCtx) {
      var contentType = controllerCtx.HttpContext.Request.ContentType;
      if (!contentType.StartsWith("application/json", StringComparison.OrdinalIgnoreCase))
        return null;

      string body;
      using (var stream = controllerCtx.HttpContext.Request.InputStream) {
        stream.Seek(0, System.IO.SeekOrigin.Begin);
        using (var reader = new StreamReader(stream))
          body = reader.ReadToEnd();
      }
      if (string.IsNullOrEmpty(body)) return null;
      return AlgorithmConverter.ConvertJsonToExperiment(body);
    }


  }
}