using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using HeuristicLab.Services.Optimization.ControllerService.General;
using HeuristicLab.Services.Optimization.ControllerService;
using System.ServiceModel;
using System.Web.Security;
using System.ServiceModel.Description;

namespace HeuristicLab.Services.Optimization.Web.Helpers
{
    public class ControllerServiceHelper
    {
      public static readonly string DEFAULT_CONTROLLER_ENDPOINT = Configuration.ControllerEndpointName;

      public delegate T ControllerServiceDelegate<T>(IControllerService service);
      
      private string pw;

      public ControllerServiceHelper(string pw) { 
        this.pw = pw;
      }

      public bool Valid { get { return pw != null; } }

      public T withControllerService<T>(ControllerServiceDelegate<T> del) {
        if (!Valid)
          return default(T);

        using (var cf = new ChannelFactory<IControllerService>(DEFAULT_CONTROLLER_ENDPOINT)) {
          var credentialBehaviour = cf.Endpoint.Behaviors.Find<ClientCredentials>();
          credentialBehaviour.UserName.UserName = Membership.GetUser().UserName;          
          credentialBehaviour.UserName.Password = pw;
          var controllerProxy = cf.CreateChannel();
          return del(controllerProxy);
        }
      }
    }
}