Creating composition root

src/Umbraco.Web.BackOffice/AspNetCore/UmbracoBackOfficeServiceCollectionExtensions.cs

@@ -1,4 +1,12 @@
+using Microsoft.AspNetCore.Hosting;
+using Microsoft.AspNetCore.Http;
 using Microsoft.Extensions.DependencyInjection;
+using Umbraco.Core;
+using Umbraco.Core.Cache;
+using Umbraco.Core.Configuration;
+using Umbraco.Core.IO;
+using Umbraco.Core.Logging;
+using Umbraco.Core.Logging.Serilog;
 
 namespace Umbraco.Web.BackOffice.AspNetCore
 {
@@ -6,8 +14,37 @@ namespace Umbraco.Web.BackOffice.AspNetCore
     {
         public static IServiceCollection AddUmbracoBackOffice(this IServiceCollection services)
         {
+
+
+            services.AddSingleton<IHttpContextAccessor, HttpContextAccessor>();
+
+            CreateCompositionRoot(services);
+
+
             return services;
         }
 
+        private static void CreateCompositionRoot(IServiceCollection services)
+        {
+            var serviceProvider = services.BuildServiceProvider();
+
+            var httpContextAccessor = serviceProvider.GetService<IHttpContextAccessor>();
+            var webHostEnvironment = serviceProvider.GetService<IWebHostEnvironment>();
+
+            var configFactory = new ConfigsFactory();
+
+            var hostingSettings = configFactory.HostingSettings;
+            var coreDebug = configFactory.CoreDebug;
+
+            var hostingEnvironment = new AspNetCoreHostingEnvironment(hostingSettings, webHostEnvironment);
+            var ioHelper = new IOHelper(hostingEnvironment);
+            var configs = configFactory.Create(ioHelper);
+
+            var logger = SerilogLogger.CreateWithDefaultConfiguration(hostingEnvironment,  new AspNetCoreSessionIdResolver(httpContextAccessor), () => services.BuildServiceProvider().GetService<IRequestCache>(), coreDebug, ioHelper, new AspNetCoreMarchal());
+            var backOfficeInfo = new AspNetCoreBackOfficeInfo(configs.Global());
+            var profiler = new LogProfiler(logger);
+
+            Composing.Current.Initialize(logger, configs, ioHelper, hostingEnvironment, backOfficeInfo, profiler);
+        }
     }
 }