1 files changed, 71 insertions, 0 deletions
diff --git a/lib/gitlab/import_export/group/group_restorer.rb b/lib/gitlab/import_export/group/group_restorer.rb
new file mode 100644
index 00000000000..b338950fb71
--- /dev/null
+++ b/lib/gitlab/import_export/group/group_restorer.rb
@@ -0,0 +1,71 @@
+# frozen_string_literal: true
+
+module Gitlab
+  module ImportExport
+    module Group
+      class GroupRestorer
+        def initialize(
+          user:,
+          shared:,
+          group:,
+          attributes:,
+          importable_path:,
+          relation_reader:,
+          reader:
+        )
+          @user = user
+          @shared = shared
+          @group = group
+          @group_attributes = attributes
+          @importable_path = importable_path
+          @relation_reader = relation_reader
+          @reader = reader
+        end
+
+        def restore
+          # consume_relation returns a list of [relation, index]
+          @group_members = @relation_reader
+            .consume_relation(@importable_path, 'members')
+            .map(&:first)
+
+          return unless members_mapper.map
+
+          restorer.restore
+        end
+
+        private
+
+        def restorer
+          @relation_tree_restorer ||= RelationTreeRestorer.new(
+            user: @user,
+            shared: @shared,
+            relation_reader: @relation_reader,
+            members_mapper: members_mapper,
+            object_builder: object_builder,
+            relation_factory: relation_factory,
+            reader: @reader,
+            importable: @group,
+            importable_attributes: @group_attributes,
+            importable_path: @importable_path
+          )
+        end
+
+        def members_mapper
+          @members_mapper ||= Gitlab::ImportExport::MembersMapper.new(
+            exported_members: @group_members,
+            user: @user,
+            importable: @group
+          )
+        end
+
+        def relation_factory
+          Gitlab::ImportExport::Group::RelationFactory
+        end
+
+        def object_builder
+          Gitlab::ImportExport::Group::ObjectBuilder
+        end
+      end
+    end
+  end
+end