1 files changed, 25 insertions, 2 deletions
diff --git a/lib/bulk_imports/groups/loaders/group_loader.rb b/lib/bulk_imports/groups/loaders/group_loader.rb
index a631685c2ad..5f5307123a5 100644
--- a/lib/bulk_imports/groups/loaders/group_loader.rb
+++ b/lib/bulk_imports/groups/loaders/group_loader.rb
@@ -4,10 +4,21 @@ module BulkImports
   module Groups
     module Loaders
       class GroupLoader
+        GroupCreationError = Class.new(StandardError)
+
         def load(context, data)
-          return unless user_can_create_group?(context.current_user, data)
+          path = data['path']
+          current_user = context.current_user
+          destination_namespace = context.entity.destination_namespace
+
+          raise(GroupCreationError, 'Path is missing') unless path.present?
+          raise(GroupCreationError, 'Destination is not a group') if user_namespace_destination?(destination_namespace)
+          raise(GroupCreationError, 'User not allowed to create group') unless user_can_create_group?(current_user, data)
+          raise(GroupCreationError, 'Group exists') if group_exists?(destination_namespace, path)
+
+          group = ::Groups::CreateService.new(current_user, data).execute
 
-          group = ::Groups::CreateService.new(context.current_user, data).execute
+          raise(GroupCreationError, group.errors.full_messages.to_sentence) if group.errors.any?
 
           context.entity.update!(group: group)
 
@@ -25,6 +36,18 @@ module BulkImports
             Ability.allowed?(current_user, :create_group)
           end
         end
+
+        def group_exists?(destination_namespace, path)
+          full_path = destination_namespace.present? ? File.join(destination_namespace, path) : path
+
+          Group.find_by_full_path(full_path).present?
+        end
+
+        def user_namespace_destination?(destination_namespace)
+          return false unless destination_namespace.present?
+
+          Namespace.find_by_full_path(destination_namespace)&.user_namespace?
+        end
       end
     end
   end