v14: Implement backoffice signalR hub (#16723)

* Implement backoffice signalR hub

* Fix test

* Refactor to use object instead of string

* Update src/Umbraco.Cms.Api.Management/Routing/BackofficeHub.cs

Co-authored-by: Bjarke Berg <[email protected]>

---------

Co-authored-by: Bjarke Berg <[email protected]>

Author: Zeegaan

src/Umbraco.Cms.Api.Management/Routing/BackOfficeAreaRoutes.cs

@@ -7,8 +7,6 @@
 using Umbraco.Cms.Core.Configuration.Models;
 using Umbraco.Cms.Core.Hosting;
 using Umbraco.Cms.Core.Services;
-using Umbraco.Cms.Core.Web.Mvc;
-using Umbraco.Cms.Web.Common.Controllers;
 using Umbraco.Cms.Web.Common.Routing;
 using Umbraco.Extensions;
 
@@ -54,8 +52,8 @@ public void CreateRoutes(IEndpointRouteBuilder endpoints)
             case RuntimeLevel.Install:
             case RuntimeLevel.Upgrade:
             case RuntimeLevel.Run:
-
                 MapMinimalBackOffice(endpoints);
+                endpoints.MapHub<BackofficeHub>(_umbracoPathSegment + Constants.Web.BackofficeSignalRHub);
                 break;
             case RuntimeLevel.BootFailed:
             case RuntimeLevel.Unknown:

src/Umbraco.Cms.Api.Management/Routing/BackofficeHub.cs

@@ -0,0 +1,8 @@
+using Microsoft.AspNetCore.SignalR;
+
+namespace Umbraco.Cms.Api.Management.Routing;
+
+public class BackofficeHub : Hub
+{
+    public async Task SendPayload(object payload) => await Clients.All.SendAsync("payloadReceived", payload);
+}

src/Umbraco.Core/Constants-Web.cs

@@ -56,6 +56,7 @@ public const string
         ///     The "base" path to the Management API
         /// </summary>
         public const string ManagementApiPath = "/management/api/";
+        public const string BackofficeSignalRHub = "/backofficeHub";
 
         public static class Routing
         {

tests/Umbraco.Tests.UnitTests/Umbraco.Web.Common/Routing/BackOfficeAreaRoutesTests.cs

@@ -45,7 +45,7 @@ public void RuntimeState_All_Routes(RuntimeLevel level)
         var endpoints = new TestRouteBuilder();
         routes.CreateRoutes(endpoints);
 
-        Assert.AreEqual(1, endpoints.DataSources.Count);
+        Assert.AreEqual(2, endpoints.DataSources.Count);
         var route = endpoints.DataSources.First();
         Assert.AreEqual(2, route.Endpoints.Count);