Moved fetching a singleton to its own controller

Controller/Direct/Page.php

@@ -42,10 +42,6 @@ public function execute()
         $contentType = $this->getRequest()
             ->getParam('type');
 
-        if ($uid === 'singleton') {
-            return $this->page->renderPageBySingleton($contentType);
-        }
-
         return $this->page->renderPageByUid($uid, $contentType);
     }
 }

Controller/Direct/Singleton.php

@@ -0,0 +1,37 @@
+<?php declare(strict_types=1);
+
+namespace Elgentos\PrismicIO\Controller\Direct;
+
+use Elgentos\PrismicIO\Renderer\Page as PageRenderer;
+use Magento\Framework\App\Action\Context;
+use Magento\Framework\App\Action\HttpPostActionInterface;
+use Magento\Framework\App\Action\HttpGetActionInterface;
+use Magento\Framework\App\Action\Action;
+
+class Singleton extends Action implements HttpGetActionInterface, HttpPostActionInterface
+{
+
+    /** @var PageRenderer */
+    public $page;
+
+    public function __construct(
+        Context $context,
+        PageRenderer $page
+    ) {
+        parent::__construct($context);
+        $this->page = $page;
+    }
+
+    /**
+     * View CMS page action
+     *
+     * @return \Magento\Framework\Controller\ResultInterface
+     */
+    public function execute()
+    {
+        $contentType = $this->getRequest()
+            ->getParam('type');
+
+        return $this->page->renderPageBySingleton($contentType);
+    }
+}