From af52f928c53ed20ec14fe1f0be75ee5410023e09 Mon Sep 17 00:00:00 2001
From: Kaitlin Newson <kaitlin.newson@gmail.com>
Date: Wed, 13 Nov 2024 11:32:13 -0400
Subject: [PATCH] pkp/pkp-lib#9928 add related identifiers to onix exports

---
 .../filter/MonographONIX30XmlFilter.inc.php   | 57 +++++++++++++++----
 1 file changed, 45 insertions(+), 12 deletions(-)

diff --git a/plugins/importexport/onix30/filter/MonographONIX30XmlFilter.inc.php b/plugins/importexport/onix30/filter/MonographONIX30XmlFilter.inc.php
index 7f67fa29406..fc84a92607c 100644
--- a/plugins/importexport/onix30/filter/MonographONIX30XmlFilter.inc.php
+++ b/plugins/importexport/onix30/filter/MonographONIX30XmlFilter.inc.php
@@ -91,9 +91,19 @@ function createSubmissionNode($doc, $rootNode, $submission) {
 			$deployment->addError(ASSOC_TYPE_MONOGRAPH, $submission->getId(), __('plugins.importExport.onix30.common.error.monographWithNoPublicationFormats', ['monographId' => $submission->getId()]));
 		}
 
+		// Collect identifiers for all publication formats to connect related products
+		$identificationCodes = [];
+		foreach ($publicationFormats as $publicationFormat) {
+			$pubIdentificationCodes = $publicationFormat->getIdentificationCodes();
+			$pubId = $publicationFormat->getId();
+			while ($code = $pubIdentificationCodes->next()) {
+				$identificationCodes[$pubId][$code->getCode()] = $code->getValue();
+			}
+		}
+
 		// Append all publication formats as Product nodes.
 		foreach ($publicationFormats as $publicationFormat) {
-			$rootNode->appendChild($this->createProductNode($doc, $submission, $publicationFormat));
+			$rootNode->appendChild($this->createProductNode($doc, $submission, $publicationFormat, $identificationCodes));
 		}
 	}
 
@@ -139,7 +149,7 @@ function createHeaderNode($doc) {
 	 * @param $publicationFormat PublicationFormat
 	 * @return DOMElement
 	 */
-	function createProductNode($doc, $submission, $publicationFormat) {
+	function createProductNode($doc, $submission, $publicationFormat, $identificationCodes) {
 
 		$deployment = $this->getDeployment();
 		$context = $deployment->getContext();
@@ -154,18 +164,18 @@ function createProductNode($doc, $submission, $publicationFormat) {
 
 		$identifierGiven = false;
 
-		$identificationCodes = $publicationFormat->getIdentificationCodes();
+		if (array_key_exists($publicationFormat->getId(), $identificationCodes)) {
+			foreach ($identificationCodes[$publicationFormat->getId()] as $code => $value) {
+				$productIdentifierNode = $doc->createElementNS($deployment->getNamespace(), 'ProductIdentifier');
+				$productIdentifierNode->appendChild($this->_buildTextNode($doc, 'ProductIDType', $code));
+				$productIdentifierNode->appendChild($this->_buildTextNode($doc, 'IDValue', $value));
+				$productNode->appendChild($productIdentifierNode);
 
-		while ($code = $identificationCodes->next()) {
-			$productIdentifierNode = $doc->createElementNS($deployment->getNamespace(), 'ProductIdentifier');
-			$productIdentifierNode->appendChild($this->_buildTextNode($doc, 'ProductIDType', $code->getCode())); // GTIN-13 (ISBN-13 as GTIN)
-			$productIdentifierNode->appendChild($this->_buildTextNode($doc, 'IDValue', $code->getValue()));
-			$productNode->appendChild($productIdentifierNode);
-
-			unset($productIdentifierNode);
-			unset($code);
+				unset($productIdentifierNode);
+				unset($code);
 
-			$identifierGiven = true;
+				$identifierGiven = true;
+			}
 		}
 
 		// Deal with the possibility of a DOI pubId from the plugin.
@@ -630,6 +640,29 @@ function createProductNode($doc, $submission, $publicationFormat) {
 			$publishingDetailNode->appendChild($this->_buildTextNode($doc, 'ROWSalesRightsType', $salesRightsROW->getType()));
 		}
 
+		/* --- Related Material --- */
+
+		unset($identificationCodes[$publicationFormat->getId()]);  // remove identifiers for the current publication format
+
+		if (count($identificationCodes) > 0) {
+			$relatedMaterialNode = $doc->createElementNS($deployment->getNamespace(), 'RelatedMaterial');
+
+			$relatedProductNode = $doc->createElementNS($deployment->getNamespace(), 'RelatedProduct');
+			$relatedProductNode->appendChild($this->_buildTextNode($doc, 'ProductRelationCode', '06')); // alternative format
+
+			foreach ($identificationCodes as $pubId => $idCodes) {
+				foreach ($idCodes as $code => $value) {
+					$productIdentifierNode = $doc->createElementNS($deployment->getNamespace(), 'ProductIdentifier');
+					$productIdentifierNode->appendChild($this->_buildTextNode($doc, 'ProductIDType', $code));
+					$productIdentifierNode->appendChild($this->_buildTextNode($doc, 'IDValue', $value));
+					$relatedProductNode->appendChild($productIdentifierNode);
+					unset($productIdentifierNode);
+				}
+			}
+			$relatedMaterialNode->appendChild($relatedProductNode);
+			$productNode->appendChild($relatedMaterialNode);
+		}
+
 		/* --- Product Supply.  We create one of these per defined Market. --- */
 
 		$representativeDao = DAORegistry::getDAO('RepresentativeDAO'); /* @var $representativeDao RepresentativeDAO */