[Metadata] Register metadata configuration

src/Bundle/DependencyInjection/Configuration.php

@@ -39,6 +39,9 @@ public function getConfigTreeBuilder(): TreeBuilder
                 ->arrayNode('mapping')
                     ->addDefaultsIfNotSet()
                     ->children()
+                        ->arrayNode('imports')
+                            ->prototype('scalar')->end()
+                        ->end()
                         ->arrayNode('paths')
                             ->prototype('scalar')->end()
                         ->end()

src/Bundle/DependencyInjection/SyliusResourceExtension.php

@@ -33,11 +33,14 @@
 use Sylius\Resource\Twig\Context\Factory\ContextFactoryInterface;
 use Symfony\Component\Config\FileLocator;
 use Symfony\Component\Config\Loader\LoaderInterface;
+use Symfony\Component\Config\Resource\DirectoryResource;
 use Symfony\Component\DependencyInjection\ContainerBuilder;
 use Symfony\Component\DependencyInjection\Exception\InvalidArgumentException;
+use Symfony\Component\DependencyInjection\Exception\RuntimeException;
 use Symfony\Component\DependencyInjection\Extension\Extension;
 use Symfony\Component\DependencyInjection\Extension\PrependExtensionInterface;
 use Symfony\Component\DependencyInjection\Loader\XmlFileLoader;
+use Symfony\Component\Finder\Finder;
 use function Symfony\Component\String\u;
 
 final class SyliusResourceExtension extends Extension implements PrependExtensionInterface
@@ -66,6 +69,7 @@ public function load(array $configs, ContainerBuilder $container): void
         $container->setParameter('sylius.resource.settings', $config['settings']);
         $container->setAlias('sylius.resource_controller.authorization_checker', $config['authorization_checker']);
 
+        $this->registerMetadataConfiguration($container, $config);
         $this->autoRegisterResources($config, $container);
 
         $this->loadPersistence($config['drivers'], $config['resources'], $loader, $container);
@@ -320,4 +324,43 @@ private function loadResources(array $loadedResources, ContainerBuilder $contain
             }
         }
     }
+
+    private function registerMetadataConfiguration(ContainerBuilder $container, array $config): void
+    {
+        $resources = $this->getResourceFilesToWatch($container, $config);
+
+        $container->getDefinition('sylius.metadata.resource_extractor.php_file')->replaceArgument(0, $resources);
+    }
+
+    private function getResourceFilesToWatch(ContainerBuilder $container, array $config): array
+    {
+        $files = [];
+
+        /** @var string $path */
+        foreach ($config['mapping']['imports'] ?? [] as $path) {
+            if (is_dir($path)) {
+                foreach (Finder::create()->followLinks()->files()->in($path)->name('/\.php$/')->sortByName() as $file) {
+                    $files[] = $file->getRealPath();
+                }
+
+                $container->addResource(new DirectoryResource($path, '/\.php$/'));
+
+                continue;
+            }
+
+            if ($container->fileExists($path, false)) {
+                if (!str_ends_with($path, '.php')) {
+                    throw new RuntimeException(\sprintf('Unsupported mapping type in "%s", supported type is PHP.', $path));
+                }
+
+                $files[] = $path;
+
+                continue;
+            }
+
+            throw new RuntimeException(\sprintf('Could not open file or directory "%s".', $path));
+        }
+
+        return $files;
+    }
 }

src/Bundle/Resources/config/services/metadata/extractor.xml

@@ -0,0 +1,8 @@
+<container xmlns="http://symfony.com/schema/dic/services" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://symfony.com/schema/dic/services http://symfony.com/schema/dic/services/services-1.0.xsd">
+    <services>
+        <service id="sylius.metadata.resource_extractor.php_file" class="Sylius\Resource\Metadata\Extractor\PhpFileResourceExtractor" public="false">
+            <argument type="collection" />
+            <argument type="service" id="service_container" />
+        </service>
+    </services>
+</container>

tests/Bundle/Configuration/ConfigurationTest.php

@@ -71,6 +71,7 @@ public function it_has_no_default_mapping_paths(): void
             ],
             [
                 'mapping' => [
+                    'imports' => [],
                     'paths' => [],
                 ],
             ],
@@ -89,6 +90,7 @@ public function its_mapping_paths_can_be_customized(): void
             ],
             [
                 'mapping' => [
+                    'imports' => [],
                     'paths' => [
                         'path/to/resources',
                     ],

tests/Bundle/DependencyInjection/SyliusResourceExtensionTest.php

@@ -123,6 +123,7 @@ public function it_registers_parameter_for_paths(): void
         ]);
 
         $this->assertContainerBuilderHasParameter('sylius.resource.mapping', [
+            'imports' => [],
             'paths' => [
                 __DIR__ . '/Dummy',
             ],
@@ -181,6 +182,36 @@ public function it_registers_doctrine_related_services_when_doctrine_is_availabl
         $this->assertContainerBuilderHasService(RemoveProcessor::class);
     }
 
+    public function testItRegistersMetadataConfigurationWithADirectoryAsImportPath(): void
+    {
+        $this->load([
+            'mapping' => [
+                'imports' => [
+                    __DIR__ . '/php',
+                ],
+            ],
+        ]);
+
+        $emptyPhpFile = realpath(__DIR__ . '/php/empty_file.php');
+        $this->assertContainerBuilderHasService('sylius.metadata.resource_extractor.php_file');
+        $this->assertSame([$emptyPhpFile], $this->container->getDefinition('sylius.metadata.resource_extractor.php_file')->getArgument(0));
+    }
+
+    public function testItRegistersMetadataConfigurationWithAFileAsImportPath(): void
+    {
+        $this->load([
+            'mapping' => [
+                'imports' => [
+                    __DIR__ . '/php/empty_file.php',
+                ],
+            ],
+        ]);
+
+        $emptyPhpFile = realpath(__DIR__ . '/php/empty_file.php');
+        $this->assertContainerBuilderHasService('sylius.metadata.resource_extractor.php_file');
+        $this->assertSame([$emptyPhpFile], $this->container->getDefinition('sylius.metadata.resource_extractor.php_file')->getArgument(0));
+    }
+
     protected function getContainerExtensions(): array
     {
         $this->setParameter('kernel.bundles', []);

tests/Bundle/DependencyInjection/php/empty_file.php

@@ -0,0 +1,12 @@
+<?php
+
+/*
+ * This file is part of the Sylius package.
+ *
+ * (c) Sylius Sp. z o.o.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+declare(strict_types=1);