class SearchCommentTest

class SearchCommentTest extends BrowserTestBase {
  use CommentTestTrait;
  use CronRunTrait;
  
  /**
   * {@inheritdoc}
   */
  protected static $modules = [
    'filter',
    'node',
    'comment',
    'search',
  ];
  
  /**
   * {@inheritdoc}
   */
  protected $defaultTheme = 'stark';
  
  /**
   * Test subject for comments.
   *
   * @var string
   */
  protected $commentSubject;
  
  /**
   * ID for the administrator role.
   *
   * @var string
   */
  protected $adminRole;
  
  /**
   * A user with various administrative permissions.
   *
   * @var \Drupal\user\UserInterface
   */
  protected $adminUser;
  
  /**
   * Test node for searching.
   *
   * @var \Drupal\node\NodeInterface
   */
  protected $node;
  
  /**
   * {@inheritdoc}
   */
  protected function setUp() : void {
    parent::setUp();
    $this->drupalCreateContentType([
      'type' => 'page',
      'name' => 'Basic page',
    ]);
    $this->drupalCreateContentType([
      'type' => 'article',
      'name' => 'Article',
    ]);
    $full_html_format = FilterFormat::create([
      'format' => 'full_html',
      'name' => 'Full HTML',
      'weight' => 1,
      'filters' => [],
    ]);
    $full_html_format->save();
    // Create and log in an administrative user having access to the Full HTML
    // text format.
    $permissions = [
      'administer filters',
      $full_html_format->getPermissionName(),
      'administer permissions',
      'create page content',
      'post comments',
      'skip comment approval',
      'access comments',
    ];
    $this->adminUser = $this->drupalCreateUser($permissions);
    $this->drupalLogin($this->adminUser);
    // Add a comment field.
    $this->addDefaultCommentField('node', 'article');
  }
  
  /**
   * Verify that comments are rendered using proper format in search results.
   */
  public function testSearchResultsComment() : void {
    $node_storage = $this->container
      ->get('entity_type.manager')
      ->getStorage('node');
    // Create basic_html format that escapes all HTML.
    $basic_html_format = FilterFormat::create([
      'format' => 'basic_html',
      'name' => 'Basic HTML',
      'weight' => 1,
      'filters' => [
        'filter_html_escape' => [
          'status' => 1,
        ],
      ],
      'roles' => [
        RoleInterface::AUTHENTICATED_ID,
      ],
    ]);
    $basic_html_format->save();
    $comment_body = 'Test comment body';
    // Make preview optional.
    $field = FieldConfig::loadByName('node', 'article', 'comment');
    $field->setSetting('preview', DRUPAL_OPTIONAL);
    $field->save();
    // Allow anonymous users to search content.
    $edit = [
      RoleInterface::ANONYMOUS_ID . '[search content]' => 1,
      RoleInterface::ANONYMOUS_ID . '[access comments]' => 1,
      RoleInterface::ANONYMOUS_ID . '[post comments]' => 1,
    ];
    $this->drupalGet('admin/people/permissions');
    $this->submitForm($edit, 'Save permissions');
    // Create a node.
    $node = $this->drupalCreateNode([
      'type' => 'article',
    ]);
    // Post a comment using 'Full HTML' text format.
    $edit_comment = [];
    $edit_comment['subject[0][value]'] = 'Test comment subject';
    $edit_comment['comment_body[0][value]'] = '<h1>' . $comment_body . '</h1>';
    $full_html_format_id = 'full_html';
    $edit_comment['comment_body[0][format]'] = $full_html_format_id;
    $this->drupalGet('comment/reply/node/' . $node->id() . '/comment');
    $this->submitForm($edit_comment, 'Save');
    // Post a comment with an evil script tag in the comment subject and a
    // script tag nearby a keyword in the comment body. Use the 'FULL HTML' text
    // format so the script tag stored.
    $edit_comment2 = [];
    $edit_comment2['subject[0][value]'] = "<script>alert('subject_keyword');</script>";
    $edit_comment2['comment_body[0][value]'] = "nearby-keyword<script>alert('something generic');</script>";
    $edit_comment2['comment_body[0][format]'] = $full_html_format_id;
    $this->drupalGet('comment/reply/node/' . $node->id() . '/comment');
    $this->submitForm($edit_comment2, 'Save');
    // Post a comment with a keyword inside an evil script tag in the comment
    // body. Use the 'FULL HTML' text format so the script tag is stored.
    $edit_comment3 = [];
    $edit_comment3['subject[0][value]'] = 'a subject';
    $edit_comment3['comment_body[0][value]'] = "<script>alert('inside-keyword');</script>";
    $edit_comment3['comment_body[0][format]'] = $full_html_format_id;
    $this->drupalGet('comment/reply/node/' . $node->id() . '/comment');
    $this->submitForm($edit_comment3, 'Save');
    // Invoke search index update.
    $this->drupalLogout();
    $this->cronRun();
    // Search for the comment subject.
    $edit = [
      'keys' => "'" . $edit_comment['subject[0][value]'] . "'",
    ];
    $this->drupalGet('search/node');
    $this->submitForm($edit, 'Search');
    $node_storage->resetCache([
      $node->id(),
    ]);
    $node2 = $node_storage->load($node->id());
    $this->assertSession()
      ->pageTextContains($node2->label());
    $this->assertSession()
      ->pageTextContains($edit_comment['subject[0][value]']);
    // Search for the comment body.
    $edit = [
      'keys' => "'" . $comment_body . "'",
    ];
    $this->submitForm($edit, 'Search');
    $this->assertSession()
      ->pageTextContains($node2->label());
    // Verify that comment is rendered using proper format.
    $this->assertSession()
      ->pageTextContains($comment_body);
    // Verify that HTML in comment body is not hidden.
    $this->assertSession()
      ->pageTextNotContains('n/a');
    $this->assertSession()
      ->assertNoEscaped($edit_comment['comment_body[0][value]']);
    // Search for the evil script comment subject.
    $edit = [
      'keys' => 'subject_keyword',
    ];
    $this->drupalGet('search/node');
    $this->submitForm($edit, 'Search');
    // Verify the evil comment subject is escaped in search results.
    $this->assertSession()
      ->responseContains('&lt;script&gt;alert(&#039;<strong>subject_keyword</strong>&#039;);');
    $this->assertSession()
      ->responseNotContains('<script>');
    // Search for the keyword near the evil script tag in the comment body.
    $edit = [
      'keys' => 'nearby-keyword',
    ];
    $this->drupalGet('search/node');
    $this->submitForm($edit, 'Search');
    // Verify that nearby script tag in the evil comment body is stripped from
    // search results.
    $this->assertSession()
      ->responseContains('<strong>nearby-keyword</strong>');
    $this->assertSession()
      ->responseNotContains('<script>');
    // Search for contents inside the evil script tag in the comment body.
    $edit = [
      'keys' => 'inside-keyword',
    ];
    $this->drupalGet('search/node');
    $this->submitForm($edit, 'Search');
    // @todo Verify the actual search results.
    //   https://www.drupal.org/node/2551135
    // Verify there is no script tag in search results.
    $this->assertSession()
      ->responseNotContains('<script>');
    // Hide comments.
    $this->drupalLogin($this->adminUser);
    $node->set('comment', CommentItemInterface::HIDDEN);
    $node->save();
    // Invoke search index update.
    $this->drupalLogout();
    $this->cronRun();
    // Search for $title.
    $this->drupalGet('search/node');
    $this->submitForm($edit, 'Search');
    $this->assertSession()
      ->pageTextContains('Your search yielded no results.');
  }
  
  /**
   * Verify access rules for comment indexing with different permissions.
   */
  public function testSearchResultsCommentAccess() : void {
    $comment_body = 'Test comment body';
    $this->commentSubject = 'Test comment subject';
    $roles = $this->adminUser
      ->getRoles(TRUE);
    $this->adminRole = $roles[0];
    // Create a node.
    // Make preview optional.
    $field = FieldConfig::loadByName('node', 'article', 'comment');
    $field->setSetting('preview', DRUPAL_OPTIONAL);
    $field->save();
    $this->node = $this->drupalCreateNode([
      'type' => 'article',
    ]);
    // Post a comment using 'Full HTML' text format.
    $edit_comment = [];
    $edit_comment['subject[0][value]'] = $this->commentSubject;
    $edit_comment['comment_body[0][value]'] = '<h1>' . $comment_body . '</h1>';
    $this->drupalGet('comment/reply/node/' . $this->node
      ->id() . '/comment');
    $this->submitForm($edit_comment, 'Save');
    $this->drupalLogout();
    $this->setRolePermissions(RoleInterface::ANONYMOUS_ID);
    $this->assertCommentAccess(FALSE, 'Anon user has search permission but no access comments permission, comments should not be indexed');
    $this->setRolePermissions(RoleInterface::ANONYMOUS_ID, TRUE);
    $this->assertCommentAccess(TRUE, 'Anon user has search permission and access comments permission, comments should be indexed');
    $this->drupalLogin($this->adminUser);
    $this->drupalGet('admin/people/permissions');
    // Disable search access for authenticated user to test admin user.
    $this->setRolePermissions(RoleInterface::AUTHENTICATED_ID, FALSE, FALSE);
    $this->setRolePermissions($this->adminRole);
    $this->assertCommentAccess(FALSE, 'Admin user has search permission but no access comments permission, comments should not be indexed');
    $this->drupalGet('node/' . $this->node
      ->id());
    $this->setRolePermissions($this->adminRole, TRUE);
    $this->assertCommentAccess(TRUE, 'Admin user has search permission and access comments permission, comments should be indexed');
    $this->setRolePermissions(RoleInterface::AUTHENTICATED_ID);
    $this->assertCommentAccess(FALSE, 'Authenticated user has search permission but no access comments permission, comments should not be indexed');
    $this->setRolePermissions(RoleInterface::AUTHENTICATED_ID, TRUE);
    $this->assertCommentAccess(TRUE, 'Authenticated user has search permission and access comments permission, comments should be indexed');
    // Verify that access comments permission is inherited from the
    // authenticated role.
    $this->setRolePermissions(RoleInterface::AUTHENTICATED_ID, TRUE, FALSE);
    $this->setRolePermissions($this->adminRole);
    $this->assertCommentAccess(TRUE, 'Admin user has search permission and no access comments permission, but comments should be indexed because admin user inherits authenticated user\'s permission to access comments');
    // Verify that search content permission is inherited from the authenticated
    // role.
    $this->setRolePermissions(RoleInterface::AUTHENTICATED_ID, TRUE, TRUE);
    $this->setRolePermissions($this->adminRole, TRUE, FALSE);
    $this->assertCommentAccess(TRUE, 'Admin user has access comments permission and no search permission, but comments should be indexed because admin user inherits authenticated user\'s permission to search');
  }
  
  /**
   * Set permissions for role.
   */
  public function setRolePermissions($rid, $access_comments = FALSE, $search_content = TRUE) {
    $permissions = [
      'access comments' => $access_comments,
      'search content' => $search_content,
    ];
    user_role_change_permissions($rid, $permissions);
  }
  
  /**
   * Update search index and search for comment.
   *
   * @internal
   */
  public function assertCommentAccess(bool $assume_access, string $message) : void {
    // Invoke search index update.
    \Drupal::service('search.index')->markForReindex('node_search', $this->node
      ->id());
    $this->cronRun();
    // Search for the comment subject.
    $edit = [
      'keys' => "'" . $this->commentSubject . "'",
    ];
    $this->drupalGet('search/node');
    $this->submitForm($edit, 'Search');
    try {
      if ($assume_access) {
        $this->assertSession()
          ->pageTextContains($this->node
          ->label());
        $this->assertSession()
          ->pageTextContains($this->commentSubject);
      }
      else {
        $this->assertSession()
          ->pageTextContains('Your search yielded no results.');
      }
    } catch (ResponseTextException $exception) {
      $this->fail($message);
    }
  }
  
  /**
   * Verify that 'add new comment' does not appear in search results or index.
   */
  public function testAddNewComment() : void {
    // Create a node with a short body.
    $settings = [
      'type' => 'article',
      'title' => 'short title',
      'body' => [
        [
          'value' => 'short body text',
        ],
      ],
    ];
    $user = $this->drupalCreateUser([
      'search content',
      'create article content',
      'access content',
      'post comments',
      'access comments',
    ]);
    $this->drupalLogin($user);
    $node = $this->drupalCreateNode($settings);
    // Verify that if you view the node on its own page, 'add new comment'
    // is there.
    $this->drupalGet('node/' . $node->id());
    $this->assertSession()
      ->pageTextContains('Add new comment');
    // Run cron to index this page.
    $this->drupalLogout();
    $this->cronRun();
    // Search for 'comment'. Should be no results.
    $this->drupalLogin($user);
    $this->drupalGet('search/node');
    $this->submitForm([
      'keys' => 'comment',
    ], 'Search');
    $this->assertSession()
      ->pageTextContains('Your search yielded no results');
    // Search for the node title. Should be found, and 'Add new comment' should
    // not be part of the search snippet.
    $this->drupalGet('search/node');
    $this->submitForm([
      'keys' => 'short',
    ], 'Search');
    $this->assertSession()
      ->pageTextContains($node->label());
    $this->assertSession()
      ->pageTextNotContains('Add new comment');
  }

}