using System.Linq;
using System.Web.Mvc;
using System.Configuration;
using System.Web.Routing;
using Neo.LegitimateLicences.Web.FrameworkExtensions;
using System;
using Neo.Legitimate.Web.DBUp;
using Sentry;
using Sentry.AspNet;
using System.Net;

namespace Neo.LegitimateLicences.Web
{
    // Note: For instructions on enabling IIS6 or IIS7 classic mode, 
    // visit http://go.microsoft.com/?LinkId=9394801

    public class MvcApplication : System.Web.HttpApplication
    {
        private IDisposable _sentry;

        public static void RegisterGlobalFilters(GlobalFilterCollection filters)
        {
            //filters.Add(new HandleErrorAttribute());

            // Use the fixed HandleErrorAttributeWithHealthMonitoring
            ////filters.Add(new HandleErrorAttributeWithHealthMonitoring());
        }

        public static void RegisterRoutes(RouteCollection routes)
        {
            routes.IgnoreRoute("{*favicon}", new
            {
                favicon = @"(.*/)?favicon.([iI][cC][oO]|[gG][iI][fF])(/.*)?"
            });

            routes.IgnoreRoute("{resource}.axd/{*pathInfo}");

            var ignorePaths = ConfigurationManager.AppSettings["ExternalRouteIgnores"];
            if (ignorePaths != null)
            {
                foreach (var s in ignorePaths.Split(',').Where(s => !string.IsNullOrEmpty(s)))
                {
                    routes.IgnoreRoute(s);
                }
            }

            routes.MapRoute(
                "Default", // Route name
                "{controller}/{action}/{id}", // URL with parameters
                new
                {
                    controller = "Home",
                    action = "Default",
                    id = UrlParameter.Optional
                } // Parameter defaults
            );
        }

        protected void Application_Start()
        {
            ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls12;

            ModelBinders.Binders.Add(typeof(decimal), new DecimalModelBinder());
            ModelBinders.Binders.Add(typeof(decimal?), new DecimalModelBinder());
            //ViewEngines.Engines.Add(new CustomViewEngine());

            AreaRegistration.RegisterAllAreas();

            RegisterGlobalFilters(GlobalFilters.Filters);
            RegisterRoutes(RouteTable.Routes);

            // Initialize Sentry to capture AppDomain unhandled exceptions and more.
            _sentry = SentrySdk.Init(o =>
            {
                o.AddAspNet();
                o.Dsn = ConfigurationManager.AppSettings["SentryDsn"];
                // When configuring for the first time, to see what the SDK is doing:
                o.Debug = true;
                // Set TracesSampleRate to 1.0 to capture 100%
                // of transactions for performance monitoring.
                // We recommend adjusting this value in production
                o.TracesSampleRate = 1.0;
                // If you are using EF (and installed the NuGet package):
                o.AddEntityFramework();
            });

            // Attempt database update, but don't crash if database is unavailable
            // This allows the application to start for testing purposes (e.g., eNatis API testing)
            try
            {
                DatabaseUpdator.UpdateDB();
            }
            catch (Exception ex)
            {
                // Log the error but don't crash the application
                // This allows the application to start even if database is unavailable
                System.Diagnostics.Debug.WriteLine($"Database update failed during startup: {ex.Message}");
                // Optionally log to a file or event log if needed
            }
        }

        protected void Application_Error() => Server.CaptureLastError();

        protected void Application_End()
        {
            // Flushes out events before shutting down.
            _sentry?.Dispose();
        }

        protected void Application_BeginRequest()
        {
            Context.StartSentryTransaction();
        }

        protected void Application_EndRequest()
        {
            Context.FinishSentryTransaction();
        }
    }
}