feat: Delete all Summary 2.0 components that has a reference to a deleted component

backend/src/Designer/Controllers/AppDevelopmentController.cs

@@ -123,16 +123,28 @@
 
                 if (formLayoutPayload.ComponentIdsChange is not null && !string.IsNullOrEmpty(layoutSetName))
                 {
                     foreach (var componentIdChange in formLayoutPayload.ComponentIdsChange)
                     {
-                        await _mediator.Publish(new ComponentIdChangedEvent
+                        if (componentIdChange.OldComponentId != componentIdChange.NewComponentId)
                         {
-                            OldComponentId = componentIdChange.OldComponentId,
-                            NewComponentId = componentIdChange.NewComponentId,
-                            LayoutSetName = layoutSetName,
-                            EditingContext = editingContext
-                        }, cancellationToken);
+                            if (componentIdChange.NewComponentId == null)
+                            {
+                                await _mediator.Publish(new ComponentDeletedEvent
+                                {
+                                    ComponentId = componentIdChange.OldComponentId,
+                                    LayoutSetName = layoutSetName,
+                                    EditingContext = editingContext
+                                }, cancellationToken);
+                            }
+                            await _mediator.Publish(new ComponentIdChangedEvent
+                            {
+                                OldComponentId = componentIdChange.OldComponentId,
+                                NewComponentId = componentIdChange.NewComponentId,
+                                LayoutSetName = layoutSetName,
+                                EditingContext = editingContext
+                            }, cancellationToken);
+                        }
                     }
                 }
                 if (!formLayouts.ContainsKey(layoutName))
                 {
@@ -159,16 +171,26 @@
         /// <param name="app">Application identifier which is unique within an organisation.</param>
         /// <param name="layoutSetName">The name of the layout set the specific layout belongs to</param>
         /// <param name="layoutName">The form layout to be deleted</param>
+        /// <param name="cancellationToken">A <see cref="CancellationToken"/> that observes if operation is cancelled.</param>
         /// <returns>A success message if the save was successful</returns>
         [HttpDelete]
         [Route("form-layout/{layoutName}")]
-        public ActionResult DeleteFormLayout(string org, string app, [FromQuery] string layoutSetName, [FromRoute] string layoutName)
+        public async Task<ActionResult> DeleteFormLayout(string org, string app, [FromQuery] string layoutSetName, [FromRoute] string layoutName, CancellationToken cancellationToken)
         {
             try
             {
                 string developer = AuthenticationHelper.GetDeveloperUserName(HttpContext);
                 var editingContext = AltinnRepoEditingContext.FromOrgRepoDeveloper(org, app, developer);
+
+                await _mediator.Publish(new LayoutPageDeletedEvent
+                {
+                    EditingContext = editingContext,
+                    LayoutSetName = layoutSetName,
+                    LayoutName = layoutName,
+                }, cancellationToken);
+
                 _appDevelopmentService.DeleteFormLayout(editingContext, layoutSetName, layoutName);
+
                 return Ok();
             }
             catch (FileNotFoundException exception)
@@ -402,13 +424,15 @@
         {
             string developer = AuthenticationHelper.GetDeveloperUserName(HttpContext);
             var editingContext = AltinnRepoEditingContext.FromOrgRepoDeveloper(org, app, developer);
-            LayoutSets layoutSets = await _appDevelopmentService.DeleteLayoutSet(editingContext, layoutSetIdToUpdate, cancellationToken);
 
             await _mediator.Publish(new LayoutSetDeletedEvent
             {
                 EditingContext = editingContext,
-                LayoutSetId = layoutSetIdToUpdate
+                LayoutSetName = layoutSetIdToUpdate
             }, cancellationToken);
+
+            LayoutSets layoutSets = await _appDevelopmentService.DeleteLayoutSet(editingContext, layoutSetIdToUpdate, cancellationToken);
+
             return Ok(layoutSets);
         }
 

backend/src/Designer/EventHandlers/ComponentDeleted/ComponentDeletedLayoutsHandler.cs

@@ -0,0 +1,26 @@
+using System.Collections.Generic;
+using System.Threading;
+using System.Threading.Tasks;
+using Altinn.Studio.Designer.Events;
+using Altinn.Studio.Designer.Hubs.SyncHub;
+using Altinn.Studio.Designer.Models;
+using Altinn.Studio.Designer.Services.Interfaces;
+using MediatR;
+
+namespace Altinn.Studio.Designer.EventHandlers.ComponentDeleted;
+
+public class ComponentDeletedLayoutsHandler(IFileSyncHandlerExecutor fileSyncHandlerExecutor, IAppDevelopmentService appDevelopmentService) : INotificationHandler<ComponentDeletedEvent>
+{
+    public async Task Handle(ComponentDeletedEvent notification, CancellationToken cancellationToken)
+    {
+        await fileSyncHandlerExecutor.ExecuteWithExceptionHandlingAndConditionalNotification(
+            notification.EditingContext,
+            SyncErrorCodes.ComponentDeletedLayoutsSyncError,
+            "layouts",
+            async () =>
+            {
+                List<Reference> referencesToDelete = [new Reference("component", notification.LayoutSetName, notification.ComponentId)];
+                return await appDevelopmentService.DeleteReferencesFromLayouts(notification.EditingContext, referencesToDelete, cancellationToken);
+            });
+    }
+}

backend/src/Designer/EventHandlers/LayoutPageDeleted/LayoutPageDeletedLayoutsHandler.cs

@@ -0,0 +1,26 @@
+using System.Collections.Generic;
+using System.Threading;
+using System.Threading.Tasks;
+using Altinn.Studio.Designer.Events;
+using Altinn.Studio.Designer.Hubs.SyncHub;
+using Altinn.Studio.Designer.Models;
+using Altinn.Studio.Designer.Services.Interfaces;
+using MediatR;
+
+namespace Altinn.Studio.Designer.EventHandlers.LayoutPageDeleted;
+
+public class LayoutPageDeletedLayoutsHandler(IFileSyncHandlerExecutor fileSyncHandlerExecutor, IAppDevelopmentService appDevelopmentService) : INotificationHandler<LayoutPageDeletedEvent>
+{
+    public async Task Handle(LayoutPageDeletedEvent notification, CancellationToken cancellationToken)
+    {
+        await fileSyncHandlerExecutor.ExecuteWithExceptionHandlingAndConditionalNotification(
+            notification.EditingContext,
+            SyncErrorCodes.LayoutPageDeletedLayoutsSyncError,
+            "layouts",
+            async () =>
+            {
+                List<Reference> referencesToDelete = [new Reference("page", notification.LayoutSetName, notification.LayoutName)];
+                return await appDevelopmentService.DeleteReferencesFromLayouts(notification.EditingContext, referencesToDelete, cancellationToken);
+            });
+    }
+}

backend/src/Designer/EventHandlers/LayoutSetDeleted/LayoutSetDeletedLayoutsHandler.cs

@@ -0,0 +1,26 @@
+using System.Collections.Generic;
+using System.Threading;
+using System.Threading.Tasks;
+using Altinn.Studio.Designer.Events;
+using Altinn.Studio.Designer.Hubs.SyncHub;
+using Altinn.Studio.Designer.Models;
+using Altinn.Studio.Designer.Services.Interfaces;
+using MediatR;
+
+namespace Altinn.Studio.Designer.EventHandlers.LayoutSetDeleted;
+
+public class LayoutSetDeletedLayoutsHandler(IFileSyncHandlerExecutor fileSyncHandlerExecutor, IAppDevelopmentService appDevelopmentService) : INotificationHandler<LayoutSetDeletedEvent>
+{
+    public async Task Handle(LayoutSetDeletedEvent notification, CancellationToken cancellationToken)
+    {
+        await fileSyncHandlerExecutor.ExecuteWithExceptionHandlingAndConditionalNotification(
+            notification.EditingContext,
+            SyncErrorCodes.LayoutSetDeletedLayoutsSyncError,
+            "layouts",
+            async () =>
+            {
+                List<Reference> referencesToDelete = [new Reference("layoutSet", notification.LayoutSetName, notification.LayoutSetName)];
+                return await appDevelopmentService.DeleteReferencesFromLayouts(notification.EditingContext, referencesToDelete, cancellationToken);
+            });
+    }
+}

backend/src/Designer/Events/ComponentDeletedEvent.cs

@@ -0,0 +1,11 @@
+using Altinn.Studio.Designer.Models;
+using MediatR;
+
+namespace Altinn.Studio.Designer.Events;
+
+public class ComponentDeletedEvent : INotification
+{
+    public AltinnRepoEditingContext EditingContext { get; set; }
+    public string LayoutSetName { get; set; }
+    public string ComponentId { get; set; }
+}

backend/src/Designer/Events/LayoutPageDeletedEvent.cs

@@ -0,0 +1,11 @@
+using Altinn.Studio.Designer.Models;
+using MediatR;
+
+namespace Altinn.Studio.Designer.Events;
+
+public class LayoutPageDeletedEvent : INotification
+{
+    public AltinnRepoEditingContext EditingContext { get; set; }
+    public string LayoutSetName { get; set; }
+    public string LayoutName { get; set; }
+}

backend/src/Designer/Events/LayoutSetDeletedEvent.cs

@@ -5,6 +5,6 @@ namespace Altinn.Studio.Designer.Events;
 
 public class LayoutSetDeletedEvent : INotification
 {
-    public string LayoutSetId { get; set; }
     public AltinnRepoEditingContext EditingContext { get; set; }
+    public string LayoutSetName { get; set; }
 }

backend/src/Designer/Hubs/SyncHub/SyncErrorCodes.cs

@@ -9,8 +9,10 @@ public static class SyncErrorCodes
     public const string ApplicationMetadataDataTypeSyncError = nameof(ApplicationMetadataDataTypeSyncError);
     public const string LayoutSetsDataTypeSyncError = nameof(LayoutSetsDataTypeSyncError);
     public const string LayoutSetComponentIdSyncError = nameof(LayoutSetComponentIdSyncError);
-    public const string LayoutSetSubLayoutSyncError = nameof(LayoutSetSubLayoutSyncError);
+    public const string LayoutSetDeletedLayoutsSyncError = nameof(LayoutSetDeletedLayoutsSyncError);
     public const string LayoutSetSubFormButtonSyncError = nameof(LayoutSetSubFormButtonSyncError);
     public const string SettingsComponentIdSyncError = nameof(SettingsComponentIdSyncError);
     public const string LayoutPageAddSyncError = nameof(LayoutPageAddSyncError);
+    public const string ComponentDeletedLayoutsSyncError = nameof(ComponentDeletedLayoutsSyncError);
+    public const string LayoutPageDeletedLayoutsSyncError = nameof(LayoutPageDeletedLayoutsSyncError);
 }

backend/src/Designer/Models/Reference.cs

@@ -0,0 +1,15 @@
+namespace Altinn.Studio.Designer.Models;
+
+public class Reference
+{
+    public string Type { get; }
+    public string LayoutSetName { get; }
+    public string Id { get; }
+
+    public Reference(string type, string layoutSetName, string id)
+    {
+        Type = type;
+        LayoutSetName = layoutSetName;
+        Id = id;
+    }
+}