using System;
using System.Web.Mvc;

namespace SEIeSCM
{
    public class UserInfoModelBinder : IModelBinder
    {
        private const string userSessionKey = "_user_info";

        public object BindModel(ControllerContext controllerContext, ModelBindingContext bindingContext)
        {
            if (bindingContext.Model != null)
            {
                throw new InvalidOperationException("Cannot updte instances");
            }
            UserInfo userInfo = controllerContext.HttpContext.Session["_user_info"] as UserInfo;
            if (userInfo == null)
            {
                userInfo = new UserInfo();
                controllerContext.HttpContext.Session["_user_info"] = userInfo;
            }
            return userInfo;
        }
    }
}