using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Hosting;
using System.Web.Http;
using System.Web.Http.Filters;
using System.Web.Mvc;
using System.Web.Optimization;
using System.Web.Routing;

namespace Tango.MachineService
{
    public class WebApiApplication : System.Web.HttpApplication
    {
        //Create filter
        public class LogExceptionFilterAttribute : ExceptionFilterAttribute
        {
            public override void OnException(HttpActionExecutedContext context)
            {
                ErrorLogService.LogError(context.Exception);
            }
        }

        protected void Application_Start()
        {
            GlobalConfiguration.Configure(WebApiConfig.Register);
            FilterConfig.RegisterGlobalFilters(GlobalFilters.Filters);
            RouteConfig.RegisterRoutes(RouteTable.Routes);

            //register your filter with Web API pipeline
            GlobalConfiguration.Configuration.Filters.Add(new LogExceptionFilterAttribute());
        }

        //common service to be used for logging errors
        public static class ErrorLogService
        {
            public static void LogError(Exception ex)
            {
                //Email developers, call fire department, log to database etc.
            }
        }
    }
}