ebayxmler.php

<?php
namespace Bitrix\Catalog\Ebay;
 
class EbayXMLer
{
    protected $fieldsMap = array(
        "NAME" => array(
            "PATH" => "ProductInformation/Title"
        ),
        "CATEGORIES" => array(
            "PATH" => "ProductInformation/Categories/Category",
            "TYPE" => "eBayLeafCategory"
        )
    );
 
    public function makeProductNode($product)
    {
        $dom = new \DOMDocument('1.0', 'utf-8');
 
        $productNode = $dom->createElement('Product');
 
        foreach($this->fieldsMap as $bitrixFieldId => $ebayFieldPath)
        {
            if(isset($product[$bitrixFieldId]))
            {
                $arPath = $this->parsePath($ebayFieldPath);
 
                $newNode = $oldNewNode = null;
 
                foreach($arPath as $pathItem)
                {
                    if(!$this->isChildExist($productNode, $pathItem))
                    {
                        $newNode = $dom->createElement($pathItem);
 
                        if($oldNewNode)
                            $oldNewNode->appendChild($newNode);
                        else
                            $productNode->appendChild($newNode);
 
                        $oldNewNode = $newNode;
                    }
                }
 
                if($newNode)
                    $newNode->nodeValue = $product[$bitrixFieldId];
            }
        }
 
        return $dom->saveXML($productNode);
    }
 
    public function isChildExist(\DOMNode $node, $childName)
    {
        $result = false;
        $children = $node->childNodes;
 
        foreach($children as $childNode)
        {
            if($childNode->nodeName == $childName)
            {
                $result = true;
                break;
            }
        }
 
        return $result;
    }
 
    protected function parsePath($path)
    {
        return explode("/", $path);
    }
}