class ContentExportTest

class ContentExportTest extends BrowserTestBase {
  use EntityReferenceFieldCreationTrait;
  use RecipeTestTrait;
  use TaxonomyTestTrait;
  
  /**
   * {@inheritdoc}
   */
  protected $defaultTheme = 'stark';
  
  /**
   * Scans for content in the fixture.
   */
  private readonly Finder $finder;
  
  /**
   * The directory where the default content is located.
   */
  private readonly string $contentDir;
  
  /**
   * The user account which is doing the content import and export.
   */
  private readonly UserInterface $adminUser;
  
  /**
   * {@inheritdoc}
   */
  protected function setUp() : void {
    parent::setUp();
    // Apply the recipe that sets up the fields and configuration for our
    // default content.
    $fixtures_dir = $this->getDrupalRoot() . '/core/tests/fixtures';
    $this->applyRecipe($fixtures_dir . '/recipes/default_content_base');
    // We need an administrative user to import and export content.
    $this->adminUser = $this->setUpCurrentUser(admin: TRUE);
    // Import all of the default content from the fixture.
    $this->contentDir = $fixtures_dir . '/default_content';
    $this->finder = new Finder($this->contentDir);
    $this->assertNotEmpty($this->finder->data);
    $this->container
      ->get(Importer::class)
      ->importContent($this->finder);
  }
  
  /**
   * Ensures that all imported content can be exported properly.
   */
  public function testExportContent() : void {
    // We should get an error if we try to export a non-existent entity type.
    $process = $this->runDrupalCommand([
      'content:export',
      'camels',
      42,
      '--no-ansi',
    ]);
    $this->assertSame(1, $process->wait());
    $this->assertStringContainsString('The entity type "camels" does not exist.', $process->getOutput());
    // We should get an error if we try to export a non-existent entity.
    $process = $this->runDrupalCommand([
      'content:export',
      'taxonomy_term',
      42,
      '--no-ansi',
    ]);
    $this->assertSame(1, $process->wait());
    $this->assertStringContainsString('taxonomy_term 42 does not exist.', $process->getOutput());
    // We should get an error if we try to export a config entity.
    $process = $this->runDrupalCommand([
      'content:export',
      'taxonomy_vocabulary',
      'tags',
      '--no-ansi',
    ]);
    $this->assertSame(1, $process->wait());
    $this->assertStringContainsString('taxonomy_vocabulary is not a content entity type.', $process->getOutput());
    $entity_repository = $this->container
      ->get(EntityRepositoryInterface::class);
    foreach ($this->finder->data as $uuid => $imported_data) {
      $entity_type_id = $imported_data['_meta']['entity_type'];
      $entity = $entity_repository->loadEntityByUuid($entity_type_id, $uuid);
      $this->assertInstanceOf(ContentEntityInterface::class, $entity);
      $process = $this->runDrupalCommand([
        'content:export',
        $entity->getEntityTypeId(),
        $entity->id(),
      ]);
      // The export should succeed without error.
      $this->assertSame(0, $process->wait());
      // The path is added by the importer and is never exported.
      unset($imported_data['_meta']['path']);
      // The output should be identical to the imported data. Sort recursively
      // by key to prevent false negatives.
      $exported_data = Yaml::decode($process->getOutput());
      // If the entity is a file, the file URI might vary slightly -- i.e., if
      // the file already existed, the imported one would have been renamed. We
      // need to account for that.
      if ($entity->getEntityTypeId() === 'file') {
        $imported_uri = $entity->getFileUri();
        $extension = strlen('.' . pathinfo($imported_uri, PATHINFO_EXTENSION));
        $imported_uri = substr($imported_uri, 0, -$extension);
        $exported_uri = substr($exported_data['default']['uri'][0]['value'], 0, -$extension);
        $this->assertStringStartsWith($imported_uri, $exported_uri);
        // We know they match; no need to consider them further.
        unset($exported_data['default']['uri'][0]['value'], $imported_data['default']['uri'][0]['value']);
      }
      // This specific node is special -- it is always reassigned to the current
      // user during import, because its owner does not exist. Therefore, the
      // current user is who it should be referring to when exported.
      if ($uuid === '7f1dd75a-0be2-4d3b-be5d-9d1a868b9267') {
        $new_owner = $this->adminUser
          ->uuid();
        $exported_data['_meta']['depends'] = $imported_data['_meta']['depends'] = [
          $new_owner => 'user',
        ];
        $exported_data['default']['uid'][0]['entity'] = $imported_data['default']['uid'][0]['entity'] = $new_owner;
      }
      SortArray::sortByKeyRecursive($exported_data);
      SortArray::sortByKeyRecursive($imported_data);
      $this->assertSame($imported_data, $exported_data);
    }
  }
  
  /**
   * Tests various entity export scenarios.
   */
  public function testEntityExportScenarios() : void {
    $this->doTestExportSingleEntityToDirectory();
    $this->doTestExportWithDependencies();
    $this->doTestCircularDependency();
    $this->doTestMissingDependenciesAreLogged();
    $this->doTestExportFileEntityWithMissingPhysicalFile();
    $this->doTestExportedPasswordIsPreserved();
    $this->doTestExportEntitiesFilteredByType();
  }
  
  /**
   * Tests that an exported user account can be logged in with after import.
   */
  protected function doTestExportedPasswordIsPreserved() : void {
    $account = $this->createUser();
    $this->assertNotEmpty($account->passRaw);
    // Export the account to temporary file.
    $process = $this->runDrupalCommand([
      'content:export',
      'user',
      $account->id(),
    ]);
    $this->assertSame(0, $process->wait());
    $dir = 'public://user-content';
    mkdir($dir);
    file_put_contents($dir . '/user.yml', $process->getOutput());
    // Delete the account and re-import it.
    $account->delete();
    $this->container
      ->get(Importer::class)
      ->importContent(new Finder($dir));
    // Ensure the import succeeded, and that we can log in with the imported
    // account. We want to use the standard login form, rather than a one-time
    // login link, to ensure the password is preserved.
    $this->assertIsObject(user_load_by_name($account->getAccountName()));
    $this->useOneTimeLoginLinks = FALSE;
    $this->drupalLogin($account);
    $this->assertSession()
      ->addressMatches('/\\/user\\/[0-9]+$/');
  }
  
  /**
   * Tests exporting a single entity to a directory with attachments.
   */
  protected function doTestExportSingleEntityToDirectory() : void {
    $file = $this->container
      ->get(EntityRepositoryInterface::class)
      ->loadEntityByUuid('file', '7fb09f9f-ba5f-4db4-82ed-aa5ccf7d425d');
    $this->assertInstanceOf(File::class, $file);
    $dir = 'public://export-content';
    $process = $this->runDrupalCommand([
      'content:export',
      'file',
      $file->id(),
      "--dir={$dir}",
    ]);
    $this->assertSame(0, $process->wait());
    $this->assertStringContainsString('One entity was exported to', $process->getOutput());
    $this->assertFileExists($dir . '/file/' . $file->uuid() . '.yml');
    $this->assertFileExists($dir . '/file/' . $file->getFilename());
  }
  
  /**
   * Tests exporting a piece of content with its dependencies.
   */
  protected function doTestExportWithDependencies() : void {
    $image_uri = $this->getRandomGenerator()
      ->image(uniqid('public://') . '.png', '200x200', '300x300');
    $file = File::create([
      'uri' => $image_uri,
    ]);
    $file->save();
    $media = Media::create([
      'bundle' => 'image',
      'field_media_image' => [
        $file,
      ],
    ]);
    $media->save();
    $this->createEntityReferenceField('node', 'article', 'field_media', 'Media', 'media', selection_handler_settings: [
      'target_bundles' => [
        'image' => 'image',
      ],
    ]);
    $node = $this->drupalCreateNode([
      'type' => 'article',
      'field_tags' => Term::load(1),
      'field_media' => $media,
      'uid' => User::load(2),
    ]);
    $command = [
      'content:export',
      'node',
      $node->id(),
      '--with-dependencies',
    ];
    // With no `--dir` option, we should get an error.
    $process = $this->runDrupalCommand($command);
    $this->assertGreaterThan(0, $process->wait());
    $this->assertStringContainsString('The --dir option is required to export multiple entities', $process->getErrorOutput());
    $command[] = "--dir=public://content";
    $process = $this->runDrupalCommand($command);
    $this->assertSame(0, $process->wait());
    $expected_output_dir = $this->container
      ->get(FileSystemInterface::class)
      ->realpath('public://content');
    $this->assertStringContainsString('5 entities were exported to ', $process->getOutput());
    $this->assertFileExists($expected_output_dir . '/node/' . $node->uuid() . '.yml');
    $this->assertFileExists($expected_output_dir . '/taxonomy_term/' . $node->field_tags[0]->entity
      ->uuid() . '.yml');
    $this->assertFileExists($expected_output_dir . '/media/' . $media->uuid() . '.yml');
    $this->assertFileExists($expected_output_dir . '/file/' . $file->uuid() . '.yml');
    $this->assertFileExists($expected_output_dir . '/user/' . $node->getOwner()
      ->uuid() . '.yml');
    // The physical file should have been copied too.
    $original_file_hash = hash_file('sha256', $file->getFileUri());
    $this->assertIsString($original_file_hash);
    $exported_file_hash = hash_file('sha256', $expected_output_dir . '/file/' . $file->getFilename());
    $this->assertIsString($exported_file_hash);
    $this->assertTrue(hash_equals($original_file_hash, $exported_file_hash));
  }
  
  /**
   * Tests that the exporter handles circular dependencies gracefully.
   */
  protected function doTestCircularDependency() : void {
    $this->createEntityReferenceField('node', 'article', 'field_related', 'Related Content', 'node', selection_handler_settings: [
      'target_bundles' => [
        'page' => 'page',
      ],
    ]);
    $this->createEntityReferenceField('node', 'page', 'field_related', 'Related Content', 'node', selection_handler_settings: [
      'target_bundles' => [
        'article' => 'article',
      ],
    ]);
    $page = $this->drupalCreateNode([
      'type' => 'page',
    ]);
    $article = $this->drupalCreateNode([
      'type' => 'article',
      'field_related' => $page,
    ]);
    $page->set('field_related', $article)
      ->save();
    $command = [
      'content:export',
      'node',
      $page->id(),
      '--with-dependencies',
      '--dir=public://content',
    ];
    // If the export takes more than 10 seconds, it's probably stuck in an
    // infinite loop.
    $process = $this->runDrupalCommand($command, 10);
    $this->assertSame(0, $process->wait());
    $destination = 'public://content/node';
    $this->assertFileExists($destination . '/' . $page->uuid() . '.yml');
    $this->assertFileExists($destination . '/' . $article->uuid() . '.yml');
  }
  
  /**
   * Tests that the exporter handles missing dependencies gracefully.
   */
  protected function doTestMissingDependenciesAreLogged() : void {
    $this->createEntityReferenceField('node', 'article', 'field_related', 'Related Content', 'node', selection_handler_settings: [
      'target_bundles' => [
        'page' => 'page',
      ],
    ]);
    $page = $this->drupalCreateNode([
      'type' => 'page',
    ]);
    $page_id = $page->id();
    $article = $this->drupalCreateNode([
      'type' => 'article',
      'field_related' => $page,
    ]);
    $page->delete();
    // We need to clear the caches or the related content is included because
    // the article is cached.
    $entity_storage = $this->container
      ->get(EntityTypeManagerInterface::class)
      ->getStorage('node');
    $entity_storage->resetCache([
      $page->id(),
      $article->id(),
    ]);
    $article = $entity_storage->load($article->id());
    /** @var \Drupal\Core\DefaultContent\Exporter $exporter */
    $exporter = $this->container
      ->get(Exporter::class);
    $logger = new TestLogger();
    $exporter->setLogger($logger);
    $dependencies = $exporter->export($article)->metadata
      ->getDependencies();
    // The export succeeded without throwing an exception, and depends only on
    // the author. The page should not be among the dependencies.
    $author_uuid = $this->adminUser
      ->uuid();
    $this->assertCount(1, $dependencies);
    $this->assertSame([
      'user',
      $author_uuid,
    ], $dependencies[0]);
    // The invalid reference should have been logged.
    $predicate = function (array $record) use ($page_id, $article) : bool {
      return $record['message'] === 'Failed to export reference to @target_type %missing_id referenced by %field on @entity_type %label because the referenced @target_type does not exist.' && $record['context']['@target_type'] === 'content item' && $record['context']['%missing_id'] === $page_id && $record['context']['%field'] === 'Related Content' && $record['context']['@entity_type'] === 'content item' && $record['context']['%label'] === $article->label();
    };
    $this->assertTrue($logger->hasRecordThatPasses($predicate, LogLevel::WARNING));
  }
  
  /**
   * Tests exporting file entities without an accompanying physical file.
   */
  protected function doTestExportFileEntityWithMissingPhysicalFile() : void {
    $file = $this->container
      ->get(EntityRepositoryInterface::class)
      ->loadEntityByUuid('file', '2b8e0616-3ef0-4a91-8cfb-b31d9128f9f8');
    $this->assertInstanceOf(File::class, $file);
    $this->assertFileDoesNotExist($file->getFileUri());
    $logger = new TestLogger();
    $this->container
      ->get('logger.factory')
      ->addLogger($logger);
    /** @var \Drupal\Core\DefaultContent\Exporter $exporter */
    $exporter = $this->container
      ->get(Exporter::class);
    $attachments = $exporter->export($file)->metadata
      ->getAttachments();
    // The export succeeded without throwing an exception, but the physical file
    // does not exist, so it should not have been attached.
    $this->assertEmpty($attachments);
    // The problem should have been logged.
    $predicate = function (array $record) use ($file) : bool {
      return $record['level'] === RfcLogLevel::WARNING && $record['message'] === 'The file (%uri) associated with file entity %name does not exist.' && $record['context']['%uri'] === $file->getFileUri() && $record['context']['%name'] === $file->label();
    };
    $this->assertTrue($logger->hasRecordThatPasses($predicate));
  }
  
  /**
   * Tests exporting entities filtered by type.
   */
  protected function doTestExportEntitiesFilteredByType() : void {
    // We should get an error if we try to export a non-existent entity type.
    $process = $this->runDrupalCommand([
      'content:export',
      'camels',
    ]);
    $this->assertSame(1, $process->wait());
    $this->assertStringContainsString('The entity type "camels" does not exist.', $process->getOutput());
    // We should get an error if we try to export a config entity.
    $process = $this->runDrupalCommand([
      'content:export',
      'taxonomy_vocabulary',
    ]);
    $this->assertSame(1, $process->wait());
    $this->assertStringContainsString('taxonomy_vocabulary is not a content entity type.', $process->getOutput());
    $content = Node::loadMultiple();
    $this->assertNotEmpty($content);
    $command = [
      'content:export',
      'node',
    ];
    // With no `--dir` option, we should get an error.
    $process = $this->runDrupalCommand($command);
    $this->assertGreaterThan(0, $process->wait());
    $this->assertStringContainsString('The --dir option is required to export multiple entities', $process->getErrorOutput());
    $command[] = "--dir=public://content";
    $process = $this->runDrupalCommand($command);
    $this->assertSame(0, $process->wait());
    $expected_output_dir = $this->container
      ->get(FileSystemInterface::class)
      ->realpath('public://content');
    $this->assertStringContainsString(count($content) . ' entities were exported to ', $process->getOutput());
    /** @var \Drupal\node\NodeInterface $node */
    foreach ($content as $node) {
      $this->assertFileExists($expected_output_dir . '/node/' . $node->uuid() . '.yml');
    }
  }
  
  /**
   * Tests exporting entities filtered by bundle.
   */
  public function testExportEntitiesFilteredByBundle() : void {
    $command = [
      'content:export',
      'node',
      '--bundle=article',
    ];
    // With no `--dir` option, we should get an error.
    $process = $this->runDrupalCommand($command);
    $this->assertGreaterThan(0, $process->wait());
    $this->assertStringContainsString('The --dir option is required to export multiple entities', $process->getErrorOutput());
    $command[] = "--dir=public://content";
    $process = $this->runDrupalCommand($command);
    $this->assertSame(0, $process->wait());
    $expected_output_dir = $this->container
      ->get(FileSystemInterface::class)
      ->realpath('public://content');
    $this->assertStringContainsString('2 entities were exported to ', $process->getOutput());
    $this->assertFileExists($expected_output_dir . '/node/2d3581c3-92c7-4600-8991-a0d4b3741198.yml');
    $this->assertFileExists($expected_output_dir . '/node/e1714f23-70c0-4493-8e92-af1901771921.yml');
    // Create two additional taxonomy vocabularies, with two terms each, to
    // test multiple `--bundle` options.
    $vocabulary1 = $this->createVocabulary();
    $vocabulary2 = $this->createVocabulary();
    $term1 = $this->createTerm($vocabulary1)
      ->uuid();
    $term2 = $this->createTerm($vocabulary1)
      ->uuid();
    $term3 = $this->createTerm($vocabulary2)
      ->uuid();
    $term4 = $this->createTerm($vocabulary2)
      ->uuid();
    $process = $this->runDrupalCommand([
      'content:export',
      'taxonomy_term',
      '--bundle=tags',
      '--bundle=' . $vocabulary2->id(),
      '--dir=public://content',
    ]);
    $this->assertSame(0, $process->wait());
    $this->assertStringContainsString('4 entities were exported to ', $process->getOutput());
    $tags = $this->container
      ->get(EntityTypeManagerInterface::class)
      ->getStorage('taxonomy_term')
      ->loadByProperties([
      'vid' => 'tags',
    ]);
    $this->assertCount(2, $tags);
    foreach ($tags as $tag) {
      $this->assertFileExists($expected_output_dir . '/taxonomy_term/' . $tag->uuid() . '.yml');
    }
    $this->assertFileDoesNotExist($expected_output_dir . '/taxonomy_term/' . $term1 . '.yml');
    $this->assertFileDoesNotExist($expected_output_dir . '/taxonomy_term/' . $term2 . '.yml');
    $this->assertFileExists($expected_output_dir . '/taxonomy_term/' . $term3 . '.yml');
    $this->assertFileExists($expected_output_dir . '/taxonomy_term/' . $term4 . '.yml');
    // Export a single entity, with the bundle filter matching the entity's
    // bundle.
    $process = $this->runDrupalCommand([
      'content:export',
      'taxonomy_term',
      1,
      '--bundle=tags',
    ]);
    $this->assertSame(0, $process->wait());
    // If we try that with a mismatched bundle filter, it should result in no
    // entity being exported, which is an error, but a hint should be given.
    $process = $this->runDrupalCommand([
      'content:export',
      'taxonomy_term',
      1,
      '--bundle=' . $vocabulary1->id(),
    ]);
    $this->assertSame(1, $process->wait());
    $output = $process->getOutput();
    $this->assertStringContainsString('taxonomy_term 1 does not exist.', $output);
    $this->assertStringContainsString('Maybe this entity is not one of the specified bundles: ' . $vocabulary1->id(), $output);
    // We should get an error if we try to export bundles that don't exist.
    $process = $this->runDrupalCommand([
      'content:export',
      'taxonomy_term',
      '--bundle=junk',
      '--bundle=tags',
    ]);
    $this->assertSame(1, $process->wait());
    $this->assertStringContainsString('These bundles do not exist on the taxonomy_term entity type: junk', $process->getOutput());
  }

}