started refactoring import export reader - WIP

1 files changed, 35 insertions, 0 deletions

diff --git a/lib/gitlab/import_export/attributes_finder.rb b/lib/gitlab/import_export/attributes_finder.rb
new file mode 100644
index 00000000000..12ae79a8773
--- /dev/null
+++ b/lib/gitlab/import_export/attributes_finder.rb
@@ -0,0 +1,35 @@
+module Gitlab
+  module ImportExport
+    class AttributesFinder
+      def initialize(included_attributes:, excluded_attributes:)
+        @included_attributes = included_attributes || {}
+        @excluded_attributes = excluded_attributes || {}
+      end
+
+      def find(model_object)
+        parsed_hash = find_attributes_only(model_object)
+        parsed_hash.empty? ? model_object : { model_object => parsed_hash }
+      end
+
+      def find_attributes_only(value)
+        find_included(value).merge(find_excluded(value))
+      end
+
+      def find_included(value)
+        key = key_from_hash(value)
+        @included_attributes[key].nil? ? {} : { only: @included_attributes[key] }
+      end
+
+      def find_excluded(value)
+        key = key_from_hash(value)
+        @excluded_attributes[key].nil? ? {} : { except: @excluded_attributes[key] }
+      end
+
+      private
+
+      def key_from_hash(value)
+        value.is_a?(Hash) ? value.keys.first : value
+      end
+    end
+  end
+end
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