using System.Data.Entity.Validation;
using System.Text;
using EnVisage.Code;
using EnVisage.Models;
using NLog;
using jQuery.DataTables.Mvc;
using System;
using System.Data.Entity;
using System.Web;
using System.Web.Mvc;
using System.Web.Optimization;
using System.Web.Routing;
using System.Web.Helpers;
using Microsoft.IdentityModel.Claims;
using System.Linq;
using DevExpress.XtraReports.Native;
using Envisage.Code.BLL;

namespace EnVisage
{
    public class MvcApplication : System.Web.HttpApplication
    {         
        protected void Application_Start()
        {
            Database.SetInitializer<ApplicationDbContext>(null);
            AreaRegistration.RegisterAllAreas();
            FilterConfig.RegisterGlobalFilters(GlobalFilters.Filters);
            RouteConfig.RegisterRoutes(RouteTable.Routes);
            BundleConfig.RegisterBundles(BundleTable.Bundles);
            ModelBinders.Binders.Add(typeof(JQueryDataTablesModel), new JQueryDataTablesModelBinder());
            AntiForgeryConfig.UniqueClaimTypeIdentifier = ClaimTypes.Name;
            MongoMigrationConfig.RunMigration();

            var jsonFactory = ValueProviderFactories.Factories.FirstOrDefault(x => x.GetType() == typeof(JsonValueProviderFactory));
            if (jsonFactory != null)
                ValueProviderFactories.Factories.Remove(jsonFactory);
            ValueProviderFactories.Factories.Add(new AdvancedJsonValueProviderFactory());
			ModelBinders.Binders.DefaultBinder = new DevExpress.Web.Mvc.DevExpressEditorsBinder();
            // NOTE: Register DataSource serializer for XtraReport
            // required for client-server communication
            SerializationService.RegisterSerializer(CustomDataSourceSerializer.Name, new CustomDataSourceSerializer());
            DevExpress.Web.ASPxWebControl.CallbackError += Application_Error;
        }

        protected void Application_Error(object sender, EventArgs e)
        {
            var exception = Server.GetLastError();
            if (exception == null)
                return;
            var sb = new StringBuilder();
            sb.AppendLine(string.Format("{0}: {1}", exception.GetType(), exception.Message));
            sb.AppendLine(exception.StackTrace);

            var innerCount = 0;
            var innerEx = exception;
            while (innerEx.InnerException != null && innerCount++ < Constants.MAX_INNER_EXCEPTION_LOG_LEVEL)
            {
                if (innerEx.Message != innerEx.InnerException.Message)
                    sb.AppendLine("Inner Exception Message: " + exception.InnerException.Message);
                innerEx = innerEx.InnerException;
            }
            if (exception is DbEntityValidationException)
            {
                sb.AppendLine();
                foreach (var validationErrors in ((DbEntityValidationException)exception).EntityValidationErrors)
                {

                    foreach (var validationError in validationErrors.ValidationErrors)
                    {
                        sb.AppendFormat("Property: {0} Error: {1}", validationError.PropertyName,
                            validationError.ErrorMessage);

                    }
                }
                sb.AppendLine(exception.StackTrace);
            }
            if (HttpContext.Current != null)
            {
                try
                {
                    sb.AppendLine();
                    sb.AppendLine(string.Format("URL: {0}", HttpContext.Current.Request.Url));
                    sb.AppendLine(string.Format("Referrer: {0}", HttpContext.Current.Request.UrlReferrer));
                    sb.AppendLine(string.Format("QueryString: {0}", HttpContext.Current.Request.QueryString));
                    sb.AppendLine(string.Format("UserHostAddress: {0}", HttpContext.Current.Request.UserHostAddress));
                    sb.AppendLine(string.Format("UserAgent: {0}", HttpContext.Current.Request.UserAgent));
                    if (HttpContext.Current.Request.Form.Count > 0)
                    {
                        sb.AppendLine();
                        sb.AppendLine("Form:");
                        foreach (string key in HttpContext.Current.Request.Form.Keys)
                        {
                            sb.AppendLine(string.Format("{0}: {1}", key, HttpContext.Current.Request.Form[key]));
                        }
                    }
                }
                catch (Exception ex) //HttpContext.Current.Request could throw exception
                {
                    sb.AppendLine();
                    sb.AppendLine("Error while handling exception details from HttpContext.Current:");
                    sb.AppendLine(ex.ToString());
                }
            }
            var logger = LogManager.GetCurrentClassLogger();
            if (logger != null)
                logger.Fatal(sb.ToString());
        }

		// SA. ENV-502
		protected void Session_OnStart()
		{
			try
			{
				FileManager mngr = new FileManager(null);
				mngr.EmptyUserTempFolder();
			}
			catch
			{
			}
		}

		// SA. ENV-502
		protected void Session_OnEnd()
		{
			try
			{
				using (EnVisageEntities dbContext = new EnVisageEntities())
				{
					FileManager mngr = new FileManager(dbContext);
					// Remove user tempory files
					mngr.EmptyUserTempFolder();
					// Remove user unattached permanent files
					//mngr.DeleteUserUnattachedPermanentFiles();
				}
			}
			catch
			{
			}
		}
	}
}