LastChanceContentFinder with global

LastChanceContentFinder.cs

using System.Linq;
using Umbraco.Core;
using Umbraco.Core.Models;
using Umbraco.Web;
using Umbraco.Web.Routing;

namespace Business.ContentFinders
{
    public class LastChanceContentFinder : IContentFinder
    {
        public bool TryFindContent(PublishedContentRequest contentRequest)
        {
            if (!contentRequest.Is404) return contentRequest.PublishedContent != null;

            contentRequest.SetResponseStatus(404, "404 Page Not Found");
            contentRequest.PublishedContent =
                GetFileNotFound(contentRequest, contentRequest.Uri.Segments[1].TrimEnd("/")) ??
                GetGlobalFileNotFound(contentRequest);

            return contentRequest.PublishedContent != null;
        }

        private static IPublishedContent GetFileNotFound(PublishedContentRequest contentRequest, string languageCode)
        {
            var helper = new UmbracoHelper(contentRequest.RoutingContext.UmbracoContext);

            var global = helper
                .TypedContentAtRoot()
                .FirstOrDefault(x => x.DocumentTypeAlias == Shared.StaticValues.DocumentTypes.GlobalHomepage);

            var language = global?
                .FirstChild(x =>
                    x.DocumentTypeAlias == Shared.StaticValues.DocumentTypes.Homepage &&
                    string.Equals(x.Name, languageCode, System.StringComparison.OrdinalIgnoreCase));

            var fileNotFound = language?
                .FirstChild(x => x.DocumentTypeAlias == Shared.StaticValues.DocumentTypes.FileNotFound);

            return fileNotFound;
        }
        private static IPublishedContent GetGlobalFileNotFound(PublishedContentRequest contentRequest)
        {
            var helper = new UmbracoHelper(contentRequest.RoutingContext.UmbracoContext);

            var global = helper
                .TypedContentAtRoot()
                .FirstOrDefault(x => x.DocumentTypeAlias == Shared.StaticValues.DocumentTypes.GlobalHomepage);

            var fileNotFound = global?
                .FirstChild(x => x.DocumentTypeAlias == Shared.StaticValues.DocumentTypes.FileNotFound);

            return fileNotFound;
        }
    }
}