V13: Eaglery route domains for virtual page controllers (#16635)

* Do domain routing eagerly

* Cleanup

* Fix comment

src/Umbraco.Web.Website/Routing/EagerMatcherPolicy.cs

@@ -8,7 +8,9 @@
 using Umbraco.Cms.Core.Configuration.Models;
 using Umbraco.Cms.Core.Routing;
 using Umbraco.Cms.Core.Services;
+using Umbraco.Cms.Core.Web;
 using Umbraco.Cms.Web.Common.Controllers;
+using Umbraco.Cms.Web.Common.Routing;
 using Umbraco.Cms.Web.Website.Controllers;
 using Umbraco.Extensions;
 
@@ -37,6 +39,8 @@ internal class EagerMatcherPolicy : MatcherPolicy, IEndpointSelectorPolicy
     private readonly IRuntimeState _runtimeState;
     private readonly EndpointDataSource _endpointDataSource;
     private readonly UmbracoRequestPaths _umbracoRequestPaths;
+    private readonly IUmbracoContextAccessor _umbracoContextAccessor;
+    private readonly IPublishedRouter _publishedRouter;
     private GlobalSettings _globalSettings;
     private readonly Lazy<Endpoint> _installEndpoint;
     private readonly Lazy<Endpoint> _renderEndpoint;
@@ -45,11 +49,15 @@ public EagerMatcherPolicy(
         IRuntimeState runtimeState,
         EndpointDataSource endpointDataSource,
         UmbracoRequestPaths umbracoRequestPaths,
-        IOptionsMonitor<GlobalSettings> globalSettings)
+        IOptionsMonitor<GlobalSettings> globalSettings,
+        IUmbracoContextAccessor umbracoContextAccessor,
+        IPublishedRouter publishedRouter)
     {
         _runtimeState = runtimeState;
         _endpointDataSource = endpointDataSource;
         _umbracoRequestPaths = umbracoRequestPaths;
+        _umbracoContextAccessor = umbracoContextAccessor;
+        _publishedRouter = publishedRouter;
         _globalSettings = globalSettings.CurrentValue;
         globalSettings.OnChange(settings => _globalSettings = settings);
         _installEndpoint = new Lazy<Endpoint>(GetInstallEndpoint);
@@ -112,11 +120,22 @@ public async Task ApplyAsync(HttpContext httpContext, CandidateSet candidates)
             ControllerActionDescriptor? controllerDescriptor = routeEndpoint.Metadata.GetMetadata<ControllerActionDescriptor>();
             TypeInfo? controllerTypeInfo = controllerDescriptor?.ControllerTypeInfo;
             if (controllerTypeInfo is not null &&
-                (controllerTypeInfo.IsType<RenderController>() || controllerTypeInfo.IsType<SurfaceController>()))
+                (controllerTypeInfo.IsType<RenderController>()
+                 || controllerTypeInfo.IsType<SurfaceController>()))
             {
                 return;
             }
 
+            // If it's an UmbracoPageController we need to do some domain routing.
+            // We need to do this in oder to handle cultures for our Dictionary.
+            // This is because UmbracoPublishedContentCultureProvider is ued to set the Thread.CurrentThread.CurrentUICulture
+            // The CultureProvider is run before the actual routing, this means that our UmbracoVirtualPageFilterAttribute is hit AFTER the culture is set.
+            // Meaning we have to route the domain part already now, this is not pretty, but it beats having to look for content we know doesn't exist.
+            if (controllerTypeInfo is not null && controllerTypeInfo.IsType<UmbracoPageController>())
+            {
+                await RouteVirtualRequestAsync(httpContext);
+            }
+
             if (routeEndpoint.Order < lowestOrder)
             {
                 // We have to ensure that the route is valid for the current request method.
@@ -153,6 +172,22 @@ public async Task ApplyAsync(HttpContext httpContext, CandidateSet candidates)
         }
     }
 
+    private async Task RouteVirtualRequestAsync(HttpContext context)
+    {
+        if (_umbracoContextAccessor.TryGetUmbracoContext(out IUmbracoContext? umbracoContext) is false)
+        {
+            return;
+        }
+
+        IPublishedRequestBuilder requestBuilder =
+            await _publishedRouter.CreateRequestAsync(umbracoContext.CleanedUmbracoUrl);
+        _publishedRouter.RouteDomain(requestBuilder);
+        // This is just a temporary RouteValues object just for culture which will be overwritten later
+        // so we can just use a dummy action descriptor.
+        var umbracoRouteValues = new UmbracoRouteValues(requestBuilder.Build(), new ControllerActionDescriptor());
+        context.Features.Set(umbracoRouteValues);
+    }
+
     /// <summary>
     /// Replaces the first endpoint candidate with the specified endpoint, invalidating all other candidates,
     /// guaranteeing that the specified endpoint will be hit.