Teknik/Teknik/Filters/TrackPageView.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Web;
using Teknik.Configuration;
using Teknik.Utilities;
using Teknik.Tracking;
using Microsoft.AspNetCore.Mvc.Filters;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Http.Extensions;
using Microsoft.AspNetCore.Mvc;

namespace Teknik.Filters
{
    public class TrackPageViewAttribute : TypeFilterAttribute
    {
        public TrackPageViewAttribute() : base(typeof(TrackPageView))
        {
        }
        public class TrackPageView : ActionFilterAttribute
        {
            private readonly IBackgroundTaskQueue _queue;
            private readonly Config _config;

            public TrackPageView(IBackgroundTaskQueue queue, Config config)
            {
                _queue = queue;
                _config = config;
            }

            public override void OnActionExecuting(ActionExecutingContext filterContext)
            {
            }

            public override void OnActionExecuted(ActionExecutedContext filterContext)
            {
                HttpRequest request = filterContext.HttpContext.Request;

                string doNotTrack = request.Headers["DNT"];
                if (string.IsNullOrEmpty(doNotTrack) || doNotTrack != "1")
                {
                    string title = (filterContext.Controller as Controller)?.ViewBag?.Title;

                    string sub = filterContext.RouteData.Values["sub"].ToString();
                    if (string.IsNullOrEmpty(sub))
                    {
                        sub = request.Host.ToUriComponent().GetSubdomain();
                    }

                    string clientIp = request.ClientIPFromRequest(true);

                    string url = UriHelper.GetEncodedUrl(request);

                    string urlReferrer = request.Headers["Referer"].ToString();

                    string userAgent = request.Headers["User-Agent"].ToString();

                    int pixelWidth = 0;
                    int pixelHeight = 0;

                    bool hasCookies = false;

                    string acceptLang = request.Headers["Accept-Language"];

                    bool hasJava = false;

                    // Fire and forget.  Don't need to wait for it.
                    _queue.QueueBackgroundWorkItem(async token =>
                    {
                        Tracking.Tracking.TrackPageView(filterContext.HttpContext, _config, title, sub, clientIp, url, urlReferrer, userAgent, pixelWidth, pixelHeight, hasCookies, acceptLang, hasJava);
                    });
                }
            }
        }
    }
}