fix(metadata): route prefix in the operation name

src/Metadata/Operations.php

@@ -26,6 +26,11 @@ public function __construct(array $operations = [])
             // When we use an int-indexed array in the constructor, compute priorities
             if (\is_int($operationName)) {
                 $operation = $operation->withPriority($operationName);
+                $operationName = (string) $operationName;
+            }
+
+            if ($operation->getName()) {
+                $operationName = $operation->getName();
             }
 
             $this->operations[] = [$operationName, $operation];

src/Metadata/Resource/Factory/OperationNameResourceMetadataCollectionFactory.php

@@ -52,7 +52,8 @@ public function create(string $resourceClass): ResourceMetadataCollection
                     continue;
                 }
 
-                $newOperationName = sprintf('_api_%s_%s%s', $operation->getUriTemplate() ?: $operation->getShortName(), strtolower($operation->getMethod() ?? HttpOperation::METHOD_GET), $operation instanceof CollectionOperationInterface ? '_collection' : '');
+                $path = ($operation->getRoutePrefix() ?? '').($operation->getUriTemplate() ?? '');
+                $newOperationName = sprintf('_api_%s_%s%s', $path ?: ($operation->getShortName() ?? $this->getDefaultShortname($resourceClass)), strtolower($operation->getMethod() ?? HttpOperation::METHOD_GET), $operation instanceof CollectionOperationInterface ? '_collection' : '');
                 $operations->remove($operationName)->add($newOperationName, $operation->withName($newOperationName));
             }
 
@@ -61,4 +62,9 @@ public function create(string $resourceClass): ResourceMetadataCollection
 
         return $resourceMetadataCollection;
     }
+
+    private function getDefaultShortname(string $resourceClass): string
+    {
+        return (false !== $pos = strrpos($resourceClass, '\\')) ? substr($resourceClass, $pos + 1) : $resourceClass;
+    }
 }

tests/Metadata/Resource/Factory/OperationNameResourceMetadataFactoryTest.php

@@ -0,0 +1,56 @@
+<?php
+
+/*
+ * This file is part of the API Platform project.
+ *
+ * (c) Kévin Dunglas <dunglas@gmail.com>
+ *
+ * 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\Tests\Metadata\Resource\Factory;
+
+use ApiPlatform\Metadata\ApiResource;
+use ApiPlatform\Metadata\Get;
+use ApiPlatform\Metadata\Operation;
+use ApiPlatform\Metadata\Resource\Factory\OperationNameResourceMetadataCollectionFactory;
+use ApiPlatform\Metadata\Resource\Factory\ResourceMetadataCollectionFactoryInterface;
+use ApiPlatform\Metadata\Resource\ResourceMetadataCollection;
+use PHPUnit\Framework\TestCase;
+use Prophecy\PhpUnit\ProphecyTrait;
+
+class OperationNameResourceMetadataFactoryTest extends TestCase
+{
+    use ProphecyTrait;
+
+    /**
+     * @dataProvider operationProvider
+     */
+    public function testGeneratesName(Operation $operation, string $expectedOperationName): void
+    {
+        $decorated = $this->prophesize(ResourceMetadataCollectionFactoryInterface::class);
+        $decorated->create('a')->willReturn(new ResourceMetadataCollection('a', [
+            new ApiResource(operations: [$operation]),
+        ]));
+
+        $operationNameResourceMetadataFactory = new OperationNameResourceMetadataCollectionFactory($decorated->reveal());
+        $result = $operationNameResourceMetadataFactory->create('a');
+
+        $this->assertEquals($operation->withName($expectedOperationName), $result->getOperation($expectedOperationName));
+    }
+
+public function operationProvider(): array
+{
+    return [
+        [new Get(), '_api_a_get'],
+        [new Get(shortName: 'Foo'), '_api_Foo_get'],
+        [new Get(name: 'test'), 'test'],
+        [new Get(routePrefix: 'foo'), '_api_foo_get'],
+        [new Get(uriTemplate: '/foo'), '_api_/foo_get'],
+        [new Get(routePrefix: '/admin', uriTemplate: '/foo'), '_api_/admin/foo_get'],
+    ];
+}
+}