Nested folders: Fix error response codes (#66943)

* Nested folders: Fix error response codes

Fix error handling

pkg/services/folder/folderimpl/folder.go

@@ -558,7 +558,7 @@ func (s *Service) Move(ctx context.Context, cmd *folder.MoveFolderCommand) (*fol
 
 	// current folder height + current folder + parent folder + parent folder depth should be less than or equal 8
 	if folderHeight+len(parents)+2 > folder.MaxNestedFolderDepth {
-		return nil, folder.ErrMaximumDepthReached
+		return nil, folder.ErrMaximumDepthReached.Errorf("failed to move folder")
 	}
 
 	// if the current folder is already a parent of newparent, we should return error
@@ -775,7 +775,7 @@ func (s *Service) validateParent(ctx context.Context, orgID int64, parentUID str
 	}
 
 	if len(ancestors) == folder.MaxNestedFolderDepth {
-		return folder.ErrMaximumDepthReached
+		return folder.ErrMaximumDepthReached.Errorf("failed to validate parent folder")
 	}
 
 	// Create folder under itself is not allowed

pkg/services/folder/folderimpl/sqlstore.go

@@ -284,7 +284,7 @@ func (ss *sqlStore) getParentsMySQL(ctx context.Context, cmd folder.GetParentsQu
 			folders = append(folders, f)
 			uid = f.ParentUID
 			if len(folders) > folder.MaxNestedFolderDepth {
-				return folder.ErrFolderTooDeep
+				return folder.ErrMaximumDepthReached.Errorf("failed to get parent folders iteratively")
 			}
 		}
 		return nil

pkg/services/folder/model.go

@@ -11,7 +11,6 @@ var ErrMaximumDepthReached = errutil.NewBase(errutil.StatusBadRequest, "folder.m
 var ErrBadRequest = errutil.NewBase(errutil.StatusBadRequest, "folder.bad-request")
 var ErrDatabaseError = errutil.NewBase(errutil.StatusInternal, "folder.database-error")
 var ErrInternal = errutil.NewBase(errutil.StatusInternal, "folder.internal")
-var ErrFolderTooDeep = errutil.NewBase(errutil.StatusInternal, "folder.too-deep")
 var ErrCircularReference = errutil.NewBase(errutil.StatusBadRequest, "folder.circular-reference", errutil.WithPublicMessage("Circular reference detected"))
 var ErrTargetRegistrySrvConflict = errutil.NewBase(errutil.StatusInternal, "folder.target-registry-srv-conflict")