Fixed: Refresh tags after updating autotags

(cherry picked from commit 6a332b40ac94e6e7c23217074da8e18e0ca3a319)

Closes #5093

src/Lidarr.Api.V1/Tags/TagController.cs

@@ -3,6 +3,7 @@ using Lidarr.Http;
 using Lidarr.Http.REST;
 using Lidarr.Http.REST.Attributes;
 using Microsoft.AspNetCore.Mvc;
+using NzbDrone.Core.AutoTagging;
 using NzbDrone.Core.Datastore.Events;
 using NzbDrone.Core.Messaging.Events;
 using NzbDrone.Core.Tags;
@@ -11,7 +12,9 @@ using NzbDrone.SignalR;
 namespace Lidarr.Api.V1.Tags
 {
     [V1ApiController]
-    public class TagController : RestControllerWithSignalR<TagResource, Tag>, IHandle<TagsUpdatedEvent>
+    public class TagController : RestControllerWithSignalR<TagResource, Tag>,
+                                 IHandle<TagsUpdatedEvent>,
+                                 IHandle<AutoTagsUpdatedEvent>
     {
         private readonly ITagService _tagService;
 
@@ -60,5 +63,11 @@ namespace Lidarr.Api.V1.Tags
         {
             BroadcastResourceChange(ModelAction.Sync);
         }
+
+        [NonAction]
+        public void Handle(AutoTagsUpdatedEvent message)
+        {
+            BroadcastResourceChange(ModelAction.Sync);
+        }
     }
 }

src/NzbDrone.Core/AutoTagging/AutoTaggingService.cs

@@ -2,6 +2,7 @@ using System.Collections.Generic;
 using System.Linq;
 using NzbDrone.Common.Cache;
 using NzbDrone.Common.Extensions;
+using NzbDrone.Core.Messaging.Events;
 using NzbDrone.Core.Music;
 using NzbDrone.Core.RootFolders;
 
@@ -22,14 +23,18 @@ namespace NzbDrone.Core.AutoTagging
     {
         private readonly IAutoTaggingRepository _repository;
         private readonly RootFolderService _rootFolderService;
+        private readonly IEventAggregator _eventAggregator;
         private readonly ICached<Dictionary<int, AutoTag>> _cache;
 
         public AutoTaggingService(IAutoTaggingRepository repository,
                                   RootFolderService rootFolderService,
+                                  IEventAggregator eventAggregator,
                                   ICacheManager cacheManager)
         {
             _repository = repository;
             _rootFolderService = rootFolderService;
+            _eventAggregator = eventAggregator;
+
             _cache = cacheManager.GetCache<Dictionary<int, AutoTag>>(typeof(AutoTag), "autoTags");
         }
 
@@ -51,13 +56,17 @@ namespace NzbDrone.Core.AutoTagging
         public void Update(AutoTag autoTag)
         {
             _repository.Update(autoTag);
+
             _cache.Clear();
+            _eventAggregator.PublishEvent(new AutoTagsUpdatedEvent());
         }
 
         public AutoTag Insert(AutoTag autoTag)
         {
             var result = _repository.Insert(autoTag);
+
             _cache.Clear();
+            _eventAggregator.PublishEvent(new AutoTagsUpdatedEvent());
 
             return result;
         }
@@ -65,7 +74,9 @@ namespace NzbDrone.Core.AutoTagging
         public void Delete(int id)
         {
             _repository.Delete(id);
+
             _cache.Clear();
+            _eventAggregator.PublishEvent(new AutoTagsUpdatedEvent());
         }
 
         public List<AutoTag> AllForTag(int tagId)

src/NzbDrone.Core/AutoTagging/AutoTagsUpdatedEvent.cs

@@ -0,0 +1,8 @@
+using NzbDrone.Common.Messaging;
+
+namespace NzbDrone.Core.AutoTagging
+{
+    public class AutoTagsUpdatedEvent : IEvent
+    {
+    }
+}