1 files changed, 64 insertions, 0 deletions
diff --git a/app/graphql/mutations/work_items/create_from_task.rb b/app/graphql/mutations/work_items/create_from_task.rb
new file mode 100644
index 00000000000..16d1e646167
--- /dev/null
+++ b/app/graphql/mutations/work_items/create_from_task.rb
@@ -0,0 +1,64 @@
+# frozen_string_literal: true
+
+module Mutations
+  module WorkItems
+    class CreateFromTask < BaseMutation
+      graphql_name 'WorkItemCreateFromTask'
+
+      include Mutations::SpamProtection
+
+      description "Creates a work item from a task in another work item's description." \
+                  " Available only when feature flag `work_items` is enabled. This feature is experimental and is subject to change without notice."
+
+      authorize :update_work_item
+
+      argument :id, ::Types::GlobalIDType[::WorkItem],
+               required: true,
+               description: 'Global ID of the work item.'
+      argument :work_item_data, ::Types::WorkItems::ConvertTaskInputType,
+               required: true,
+               description: 'Arguments necessary to convert a task into a work item.',
+               prepare: ->(attributes, _ctx) { attributes.to_h }
+
+      field :work_item, Types::WorkItemType,
+            null: true,
+            description: 'Updated work item.'
+
+      field :new_work_item, Types::WorkItemType,
+            null: true,
+            description: 'New work item created from task.'
+
+      def resolve(id:, work_item_data:)
+        work_item = authorized_find!(id: id)
+
+        unless Feature.enabled?(:work_items, work_item.project, default_enabled: :yaml)
+          return { errors: ['`work_items` feature flag disabled for this project'] }
+        end
+
+        spam_params = ::Spam::SpamParams.new_from_request(request: context[:request])
+
+        result = ::WorkItems::CreateFromTaskService.new(
+          work_item: work_item,
+          current_user: current_user,
+          work_item_params: work_item_data,
+          spam_params: spam_params
+        ).execute
+
+        check_spam_action_response!(result[:work_item]) if result[:work_item]
+
+        response = { errors: result.errors }
+        response.merge!(work_item: work_item, new_work_item: result[:work_item]) if result.success?
+
+        response
+      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