using Fab2ApprovalSystem.Misc;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Hosting;
using System.Web.Mvc;
using System.Web.Optimization;
using System.Web.Routing;
using System.Web.Security;
using System.Configuration;
using Fab2ApprovalSystem.DMO;

namespace Fab2ApprovalSystem
{
    public class MvcApplication : System.Web.HttpApplication
    {
        protected void Application_Start()
        {
            AreaRegistration.RegisterAllAreas();
            FilterConfig.RegisterGlobalFilters(GlobalFilters.Filters);
            RouteConfig.RegisterRoutes(RouteTable.Routes);
            BundleConfig.RegisterBundles(BundleTable.Bundles);

            //string DevAttachmentUrl = ConfigurationManager.AppSettings["DevAttachmentURl"].ToString();
            //string ProdAttachmentUrl = ConfigurationManager.AppSettings["ProdAttachmentURL"].ToString();
            string connectionstring = ConfigurationManager.ConnectionStrings["FabApprovalConnection"].ConnectionString.ToString();

            GlobalVars.hostURL = HttpRuntime.AppDomainAppVirtualPath;

             string DevWebSiteUrl = ConfigurationManager.AppSettings["DevWebSiteURL"].ToString();
            string ProdWebSiteUrl = ConfigurationManager.AppSettings["ProdWebSiteURL"].ToString();

            GlobalVars.SENDER_EMAIL = "FabApprovalSystem@Infineon.com"; // put in the Config File
            if (ConfigurationManager.AppSettings["Notification Sender"] != null)
                GlobalVars.SENDER_EMAIL = ConfigurationManager.AppSettings["Notification Sender"].ToString();

            GlobalVars.NDriveURL = ConfigurationManager.AppSettings["NDrive"].ToString();
            GlobalVars.WSR_URL = ConfigurationManager.AppSettings["WSR_URL"].ToString();
            GlobalVars.CA_BlankFormsLocation = ConfigurationManager.AppSettings["CA_BlankFormsLocation"].ToString();
            GlobalVars.DBConnection = connectionstring.ToUpper().Contains("TEST") ? "TEST" : connectionstring.ToUpper().Contains("QUALITY") ? "QUALITY" : "PROD";

            //GlobalVars.AttachmentUrl = connectionstring.ToUpper().Contains("TEST") ? @"http://" + DevAttachmentUrl + "/" : @"http://" + ProdAttachmentUrl + "/"; ;

            GlobalVars.hostURL = connectionstring.ToUpper().Contains("TEST") ? @"http://" + DevWebSiteUrl  : @"http://" + ProdWebSiteUrl ;
            

        }


        //void Application_BeginRequest(Object source, EventArgs e)
        //{

        //    HttpApplication app = (HttpApplication)source;
        //    HttpContext context = app.Context;
        //    GlobalVars.hostURL = context.Request.Url.AbsoluteUri;
        //    // Attempt to peform first request initialization

        //} 

        protected void Application_EndRequest()
        {
            var context = new HttpContextWrapper(Context);

            //Do a direct 401 unautorized
            if (Context.Response.StatusCode == 301 && context.Request.IsAjaxRequest())
            {
                Context.Response.Clear();
                Context.Response.StatusCode = 401;
            }

            else if (FormsAuthentication.IsEnabled && context.Response.StatusCode == 302
                && context.Request.IsAjaxRequest())
            {
                context.Response.Clear();
                context.Response.StatusCode = 401;
            }
        }

        protected void Session_Start(object sender, EventArgs e)
        {
            Session[GlobalVars.ECN_VIEW_OPTION] = "Pending Approvals"; ;
        }

        protected void Session_End(object sender, EventArgs e)
        {
            //FormsAuthentication.SignOut();
            try
            {
                Session[GlobalVars.SESSION_USERNAME] = "";
                Session[GlobalVars.SESSION_USERID] = "";
                Session[GlobalVars.IS_ADMIN] = "";

                //LotTravelerDMO LotTravDMO = new LotTravelerDMO();
                //LotTravDMO.ReleaseLockOnDocument((int)Session[GlobalVars.SESSION_USERID], -1);
            }

            catch(Exception ex)
            {
                Functions.WriteEvent(@User.Identity.Name + "\r\n Session Closed - \r\n" + ex.Message.ToString(), System.Diagnostics.EventLogEntryType.Error);
            }
            
            
        }

        // This code is to allow hyperlinks from Office products to load the site without always forcing the user to log in
        // It makes the browser reload the page so that the session cookies are sent properly
        private static string MSUserAgentsRegex = @"[^\w](Word|Excel|PowerPoint|ms-office)([^\w]|\z)";
        protected void Application_OnPostAuthenticateRequest(object sender, EventArgs e)
        {
            if (System.Text.RegularExpressions.Regex.IsMatch(Request.UserAgent, MSUserAgentsRegex))
            {
                Response.Write("<html><head><meta http-equiv='refresh' content='0'/></head><body></body></html>");
                Response.End();
            }
        }

        void Application_Error(object sender, EventArgs e)
        {
            var ex = Server.GetLastError();

            var exString = "Caught unhandled exception:\r\n";
            exString += String.Format("User: {0}\r\n", @User.Identity.Name);
            Exception x = ex;
            while (x != null)
            {
                exString += x.ToString();
                exString += "=====\r\n";
                x = x.InnerException;
            }

            //Misc.Functions.WriteEvent(exString, System.Diagnostics.EventLogEntryType.Error);

            try
            {
                if (exString.Length > 500)
                    exString = exString.Substring(0, 500);

                EventLogDMO.Add(new Fab2ApprovalSystem.Models.WinEventLog()
                {
                    UserID = @User.Identity.Name,
                    OperationType = "Error",
                    Comments = exString
                });
            }
            catch (Exception ex2)
            {
                Misc.Functions.WriteEvent("Failed to write error to event log in database: " + ex2.ToString(), System.Diagnostics.EventLogEntryType.Error);
            }
        }

    }
}