class CommentNewIndicatorTest

class CommentNewIndicatorTest extends CommentTestBase {
    
    /**
     * Use the main node listing to test rendering on teasers.
     *
     * @var array
     *
     * @todo Remove this dependency.
     */
    protected static $modules = [
        'views',
    ];
    
    /**
     * {@inheritdoc}
     */
    protected $defaultTheme = 'stark';
    
    /**
     * Get node "x new comments" metadata from the server for the current user.
     *
     * @param array $node_ids
     *   An array of node IDs.
     *
     * @return \Psr\Http\Message\ResponseInterface
     *   The HTTP response.
     */
    protected function renderNewCommentsNodeLinks(array $node_ids) {
        $client = $this->getHttpClient();
        $url = Url::fromRoute('comment.new_comments_node_links');
        return $client->request('POST', $this->buildUrl($url), [
            'cookies' => $this->getSessionCookies(),
            'http_errors' => FALSE,
            'form_params' => [
                'node_ids' => $node_ids,
                'field_name' => 'comment',
            ],
        ]);
    }
    
    /**
     * Tests new comment marker.
     */
    public function testCommentNewCommentsIndicator() : void {
        // Test if the right links are displayed when no comment is present for the
        // node.
        $this->drupalLogin($this->adminUser);
        $this->drupalGet('node');
        $this->assertSession()
            ->linkNotExists('0 comments');
        $this->assertSession()
            ->linkExists('Read more');
        // Verify the data-history-node-last-comment-timestamp attribute, which is
        // used by the drupal.node-new-comments-link library to determine whether
        // a "x new comments" link might be necessary or not. We do this in
        // JavaScript to prevent breaking the render cache.
        $this->assertSession()
            ->elementNotExists('xpath', '//*[@data-history-node-last-comment-timestamp]');
        // Create a new comment. This helper function may be run with different
        // comment settings so use $comment->save() to avoid complex setup.
        
        /** @var \Drupal\comment\CommentInterface $comment */
        $comment = Comment::create([
            'cid' => NULL,
            'entity_id' => $this->node
                ->id(),
            'entity_type' => 'node',
            'field_name' => 'comment',
            'pid' => 0,
            'uid' => $this->loggedInUser
                ->id(),
            'status' => CommentInterface::PUBLISHED,
            'subject' => $this->randomMachineName(),
            'hostname' => '127.0.0.1',
            'langcode' => LanguageInterface::LANGCODE_NOT_SPECIFIED,
            'comment_body' => [
                LanguageInterface::LANGCODE_NOT_SPECIFIED => [
                    $this->randomMachineName(),
                ],
            ],
        ]);
        $comment->save();
        $this->drupalLogout();
        // Log in with 'web user' and check comment links.
        $this->drupalLogin($this->webUser);
        $this->drupalGet('node');
        // Verify the data-history-node-last-comment-timestamp attribute. Given its
        // value, the drupal.node-new-comments-link library would determine that the
        // node received a comment after the user last viewed it, and hence it would
        // perform an HTTP request to render the "new comments" node link.
        $this->assertSession()
            ->elementsCount('xpath', '//*[@data-history-node-last-comment-timestamp="' . $comment->getChangedTime() . '"]', 1);
        $this->assertSession()
            ->elementsCount('xpath', '//*[@data-history-node-field-name="comment"]', 1);
        // The data will be pre-seeded on this particular page in drupalSettings, to
        // avoid the need for the client to make a separate request to the server.
        $settings = $this->getDrupalSettings();
        $this->assertEquals([
            'lastReadTimestamps' => [
                1 => 0,
            ],
        ], $settings['history']);
        $this->assertEquals([
            'newCommentsLinks' => [
                'node' => [
                    'comment' => [
                        1 => [
                            'new_comment_count' => 1,
                            'first_new_comment_link' => Url::fromRoute('entity.node.canonical', [
                                'node' => 1,
                            ])->setOptions([
                                'fragment' => 'new',
                            ])
                                ->toString(),
                        ],
                    ],
                ],
            ],
        ], $settings['comment']);
        // Pretend the data was not present in drupalSettings, i.e. test the
        // separate request to the server.
        $response = $this->renderNewCommentsNodeLinks([
            $this->node
                ->id(),
        ]);
        $this->assertSame(200, $response->getStatusCode());
        $json = Json::decode($response->getBody());
        $expected = [
            $this->node
                ->id() => [
                'new_comment_count' => 1,
                'first_new_comment_link' => $this->node
                    ->toUrl('canonical', [
                    'fragment' => 'new',
                ])
                    ->toString(),
            ],
        ];
        $this->assertSame($expected, $json);
        // Failing to specify node IDs for the endpoint should return a 404.
        $response = $this->renderNewCommentsNodeLinks([]);
        $this->assertSame(404, $response->getStatusCode());
        // Accessing the endpoint as the anonymous user should return a 403.
        $this->drupalLogout();
        $response = $this->renderNewCommentsNodeLinks([
            $this->node
                ->id(),
        ]);
        $this->assertSame(403, $response->getStatusCode());
        $response = $this->renderNewCommentsNodeLinks([]);
        $this->assertSame(403, $response->getStatusCode());
    }

}