feat(metadata): cascade resource to operation

Author: soyuka

src/Metadata/ApiResource.php

@@ -32,6 +32,7 @@
 class ApiResource extends Metadata
 {
     use WithResourceTrait;
+    use CascadeToOperationsTrait;
 
     protected ?Operations $operations;
 

src/Metadata/CascadeToOperationsTrait.php

@@ -0,0 +1,55 @@
+<?php
+
+/*
+ * This file is part of the API Platform project.
+ *
+ * (c) Kévin Dunglas <[email protected]>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+declare(strict_types=1);
+
+namespace ApiPlatform\Metadata;
+
+/**
+ * @phpstan-require-extends ApiResource
+ */
+trait CascadeToOperationsTrait
+{
+    public function cascadeToOperations(): static
+    {
+        if (null === ($currentOperations = $this->getOperations())) {
+            return $this;
+        }
+
+        $newOperations = new Operations();
+        foreach ($currentOperations as $key => $operation) {
+            foreach (get_class_methods($operation) as $method) {
+                if (!preg_match('/^(?:get|is|can)(.*)$/', $method, $matches)) {
+                    continue;
+                }
+
+                $propertyName = $matches[1];
+                $wither = 'with'.$propertyName;
+
+                if ($operation->{$method}() !== null) {
+                    continue;
+                }
+
+                if (!method_exists($this, $method) || null === ($v = $this->{$method}())) {
+                    continue;
+                }
+
+                $operation = $operation->{$wither}($v);
+            }
+
+            $newOperations->add($key, $operation);
+        }
+
+        $newResource = clone $this;
+
+        return $newResource->withOperations($newOperations);
+    }
+}