From cd7ad3829d7be00ca512cdecd66c952e5da0e7ae Mon Sep 17 00:00:00 2001
From: mhsdesign <85400359+mhsdesign@users.noreply.github.com>
Date: Mon, 12 Feb 2024 19:28:55 +0100
Subject: [PATCH] FEATURE: Add `NodeSerializer`

---
 .../Classes/SharedModel/Node/NodeIdentity.php |  2 +-
 .../Classes/NodeSerializer.php                | 59 +++++++++++++++++++
 2 files changed, 60 insertions(+), 1 deletion(-)
 create mode 100644 Neos.ContentRepositoryRegistry/Classes/NodeSerializer.php

diff --git a/Neos.ContentRepository.Core/Classes/SharedModel/Node/NodeIdentity.php b/Neos.ContentRepository.Core/Classes/SharedModel/Node/NodeIdentity.php
index cc69386ce68..bb4ddfc7f64 100644
--- a/Neos.ContentRepository.Core/Classes/SharedModel/Node/NodeIdentity.php
+++ b/Neos.ContentRepository.Core/Classes/SharedModel/Node/NodeIdentity.php
@@ -41,7 +41,7 @@ public static function create(
         WorkspaceName $workspaceName,
         DimensionSpacePoint $dimensionSpacePoint,
         NodeAggregateId $nodeAggregateId,
-    ) {
+    ): self {
         return new self($contentRepositoryId, $workspaceName, $dimensionSpacePoint, $nodeAggregateId);
     }
 
diff --git a/Neos.ContentRepositoryRegistry/Classes/NodeSerializer.php b/Neos.ContentRepositoryRegistry/Classes/NodeSerializer.php
new file mode 100644
index 00000000000..431cb8555bc
--- /dev/null
+++ b/Neos.ContentRepositoryRegistry/Classes/NodeSerializer.php
@@ -0,0 +1,59 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Neos\ContentRepositoryRegistry;
+
+use Neos\ContentRepository\Core\Projection\ContentGraph\Node;
+use Neos\ContentRepository\Core\Projection\ContentGraph\VisibilityConstraints;
+use Neos\ContentRepository\Core\SharedModel\Node\NodeIdentity;
+use Neos\Flow\Annotations as Flow;
+
+/**
+ * Utility to convert the {@see Node} to its {@see NodeIdentity} and reverse.
+ *
+ * @api
+ */
+#[Flow\Scope('singleton')]
+final readonly class NodeSerializer
+{
+    public function __construct(
+        private ContentRepositoryRegistry $contentRepositoryRegistry
+    ) {
+    }
+
+    public function denormalizeNodeFromIdentity(NodeIdentity $identity): Node
+    {
+        $contentRepository = $this->contentRepositoryRegistry->get($identity->contentRepositoryId);
+        $workspace = $contentRepository->getWorkspaceFinder()->findOneByName($identity->workspaceName);
+        if (!$workspace) {
+            throw new \RuntimeException(sprintf('Workspace could not be found while deserializing node NodeIdentity<%s>.', json_encode($identity, JSON_PARTIAL_OUTPUT_ON_ERROR)), 1707757488);
+        }
+        $subgraph = $contentRepository->getContentGraph()->getSubgraph(
+            $workspace->currentContentStreamId,
+            $identity->dimensionSpacePoint,
+            // todo policy? Or what to prevent from accidentally showing unwanted nodes.
+            VisibilityConstraints::withoutRestrictions()
+        );
+        $node = $subgraph->findNodeById($identity->nodeAggregateId);
+        if (!$node) {
+            throw new \RuntimeException(sprintf('NodeAggregateId could not be found while deserializing node NodeIdentity<%s>.', json_encode($identity, JSON_PARTIAL_OUTPUT_ON_ERROR)), 1707772263);
+        }
+        return $node;
+    }
+
+    public function normalizeNodeToIdentity(Node $node): NodeIdentity
+    {
+        $contentRepository = $this->contentRepositoryRegistry->get($node->subgraphIdentity->contentRepositoryId);
+        $workspace = $contentRepository->getWorkspaceFinder()->findOneByCurrentContentStreamId($node->subgraphIdentity->contentStreamId);
+        if (!$workspace) {
+            throw new \RuntimeException(sprintf('Workspace could not be found for current content stream %s.', $node->subgraphIdentity->contentStreamId->value), 1707757787);
+        }
+        return NodeIdentity::create(
+            $node->subgraphIdentity->contentRepositoryId,
+            $workspace->workspaceName,
+            $node->subgraphIdentity->dimensionSpacePoint,
+            $node->nodeAggregateId
+        );
+    }
+}