1 files changed, 29 insertions, 0 deletions
diff --git a/app/graphql/types/range_input_type.rb b/app/graphql/types/range_input_type.rb
new file mode 100644
index 00000000000..766e523a99e
--- /dev/null
+++ b/app/graphql/types/range_input_type.rb
@@ -0,0 +1,29 @@
+# frozen_string_literal: true
+
+module Types
+  # rubocop: disable Graphql/AuthorizeTypes
+  class RangeInputType < BaseInputObject
+    def self.[](type, closed = true)
+      @subtypes ||= {}
+
+      @subtypes[[type, closed]] ||= Class.new(self) do
+        argument :start, type,
+                 required: closed,
+                 description: 'The start of the range'
+
+        argument :end, type,
+                 required: closed,
+                 description: 'The end of the range'
+      end
+    end
+
+    def prepare
+      if self[:end] && self[:start] && self[:end] < self[:start]
+        raise ::Gitlab::Graphql::Errors::ArgumentError, 'start must be before end'
+      end
+
+      to_h
+    end
+  end
+  # rubocop: enable Graphql/AuthorizeTypes
+end