Implement Seo Generator

Model/Config/Generator/SeoGenerator.php

+<?php
+declare(strict_types=1);
+
+namespace Firegento\ContentProvisioning\Model\Config\Generator;
+
+use Firegento\ContentProvisioning\Api\Data\BlockEntryInterface;
+use Firegento\ContentProvisioning\Api\Data\EntryInterface;
+use Firegento\ContentProvisioning\Api\Data\PageEntryInterface;
+use Firegento\ContentProvisioning\Model\Config\Generator\Query\GetNodeByKey;
+use SimpleXMLElement;
+
+class SeoGenerator implements GeneratorInterface
+{
+    /**
+     * @var GetNodeByKey
+     */
+    private $getNodeByKey;
+
+    /**
+     * @param GetNodeByKey $getNodeByKey
+     */
+    public function __construct(
+        GetNodeByKey $getNodeByKey
+    ) {
+        $this->getNodeByKey = $getNodeByKey;
+    }
+
+    /**
+     * @param EntryInterface|PageEntryInterface|BlockEntryInterface $entry
+     * @param SimpleXMLElement $xml
+     */
+    public function execute(EntryInterface $entry, SimpleXMLElement $xml): void
+    {
+        $entryNode = $this->getNodeByKey->execute($xml, $entry->getKey());
+        if (!$entryNode) {
+            return;
+        }
+
+        $seoTitle       = $entry->getMetaTitle();
+        $seoKeywords    = $entry->getMetaKeywords();
+        $seoDescription = $entry->getMetaDescription();
+
+        if (!$seoTitle && !$seoKeywords && !$seoDescription) {
+            return;
+        }
+
+        $nodeCustomDesign = $entryNode->addChild('seo');
+
+        if ($seoTitle) {
+            $nodeCustomDesign->addChild('title', $seoTitle);
+        }
+        if ($seoKeywords) {
+            $nodeCustomDesign->addChild('keywords', $seoKeywords);
+        }
+        if ($seoDescription) {
+            $nodeCustomDesign->addChild('description', $seoDescription);
+        }
+    }
+}
\ No newline at end of file

etc/di.xml

@@ -130,6 +130,7 @@
                 <item name="title" xsi:type="object">Firegento\ContentProvisioning\Model\Config\Generator\TitleGenerator</item>
                 <item name="content" xsi:type="object">Firegento\ContentProvisioning\Model\Config\Generator\ContentGenerator</item>
                 <item name="stores" xsi:type="object">Firegento\ContentProvisioning\Model\Config\Generator\StoresGenerator</item>
+                <item name="seo" xsi:type="object">Firegento\ContentProvisioning\Model\Config\Generator\SeoGenerator</item>
                 <item name="design" xsi:type="object">Firegento\ContentProvisioning\Model\Config\Generator\DesignGenerator</item>
                 <item name="custom_design" xsi:type="object">Firegento\ContentProvisioning\Model\Config\Generator\CustomDesignGenerator</item>
             </argument>