1 files changed, 61 insertions, 0 deletions
diff --git a/app/graphql/mutations/work_items/update.rb b/app/graphql/mutations/work_items/update.rb
new file mode 100644
index 00000000000..3ab9ba2d502
--- /dev/null
+++ b/app/graphql/mutations/work_items/update.rb
@@ -0,0 +1,61 @@
+# frozen_string_literal: true
+
+module Mutations
+  module WorkItems
+    class Update < BaseMutation
+      graphql_name 'WorkItemUpdate'
+      description "Updates a work item by Global ID." \
+                  " Available only when feature flag `work_items` is enabled. The feature is experimental and is subject to change without notice."
+
+      include Mutations::SpamProtection
+
+      authorize :update_work_item
+
+      argument :id, ::Types::GlobalIDType[::WorkItem],
+               required: true,
+               description: 'Global ID of the work item.'
+      argument :state_event, Types::WorkItems::StateEventEnum,
+               description: 'Close or reopen a work item.',
+               required: false
+      argument :title, GraphQL::Types::String,
+               required: false,
+               description: copy_field_description(Types::WorkItemType, :title)
+
+      field :work_item, Types::WorkItemType,
+            null: true,
+            description: 'Updated work item.'
+
+      def resolve(id:, **attributes)
+        work_item = authorized_find!(id: id)
+
+        unless Feature.enabled?(:work_items, work_item.project)
+          return { errors: ['`work_items` feature flag disabled for this project'] }
+        end
+
+        spam_params = ::Spam::SpamParams.new_from_request(request: context[:request])
+
+        ::WorkItems::UpdateService.new(
+          project: work_item.project,
+          current_user: current_user,
+          params: attributes,
+          spam_params: spam_params
+        ).execute(work_item)
+
+        check_spam_action_response!(work_item)
+
+        {
+          work_item: work_item.valid? ? work_item : nil,
+          errors: errors_on_object(work_item)
+        }
+      end
+
+      private
+
+      def find_object(id:)
+        # TODO: Remove coercion when working on https://gitlab.com/gitlab-org/gitlab/-/issues/257883
+        id = ::Types::GlobalIDType[::WorkItem].coerce_isolated_input(id)
+        GitlabSchema.find_by_gid(id)
+      end
+    end
+  end
+end