class MediaTestBase

abstract class MediaTestBase extends WebDriverTestBase {
    use CKEditor5TestTrait;
    use MediaTypeCreationTrait;
    use TestFileCreationTrait;
    
    /**
     * The user to use during testing.
     *
     * @var \Drupal\user\UserInterface
     */
    protected $adminUser;
    
    /**
     * The sample Media entity to embed.
     *
     * @var \Drupal\media\MediaInterface
     */
    protected $media;
    
    /**
     * The second sample Media entity to embed used in one of the tests.
     *
     * @var \Drupal\media\MediaInterface
     */
    protected $mediaFile;
    
    /**
     * A host entity with a body field to embed media in.
     *
     * @var \Drupal\node\NodeInterface
     */
    protected $host;
    
    /**
     * {@inheritdoc}
     */
    protected static $modules = [
        'ckeditor5',
        'media',
        'node',
        'text',
        'media_test_embed',
        'media_library',
        'ckeditor5_test',
    ];
    
    /**
     * {@inheritdoc}
     */
    protected $defaultTheme = 'starterkit_theme';
    
    /**
     * {@inheritdoc}
     */
    protected function setUp() : void {
        parent::setUp();
        EntityViewMode::create([
            'id' => 'media.view_mode_1',
            'targetEntityType' => 'media',
            'status' => TRUE,
            'enabled' => TRUE,
            'label' => 'View Mode 1',
        ])->save();
        EntityViewMode::create([
            'id' => 'media.22222',
            'targetEntityType' => 'media',
            'status' => TRUE,
            'enabled' => TRUE,
            'label' => 'View Mode 2 has Numeric ID',
        ])->save();
        FilterFormat::create([
            'format' => 'test_format',
            'name' => 'Test format',
            'filters' => [
                'filter_html' => [
                    'status' => TRUE,
                    'settings' => [
                        'allowed_html' => '<p> <br> <strong> <em> <a href> <drupal-media data-entity-type data-entity-uuid data-align data-view-mode data-caption alt>',
                    ],
                ],
                'filter_align' => [
                    'status' => TRUE,
                ],
                'filter_caption' => [
                    'status' => TRUE,
                ],
                'media_embed' => [
                    'status' => TRUE,
                    'settings' => [
                        'default_view_mode' => 'view_mode_1',
                        'allowed_view_modes' => [
                            'view_mode_1' => 'view_mode_1',
                            '22222' => '22222',
                        ],
                        'allowed_media_types' => [],
                    ],
                ],
            ],
        ])->save();
        Editor::create([
            'editor' => 'ckeditor5',
            'format' => 'test_format',
            'settings' => [
                'toolbar' => [
                    'items' => [
                        'sourceEditing',
                        'link',
                        'bold',
                        'italic',
                    ],
                ],
                'plugins' => [
                    'ckeditor5_sourceEditing' => [
                        'allowed_tags' => [],
                    ],
                    'media_media' => [
                        'allow_view_mode_override' => TRUE,
                    ],
                ],
            ],
            'image_upload' => [
                'status' => FALSE,
            ],
        ])->save();
        $this->assertSame([], array_map(function (ConstraintViolation $v) {
            return (string) $v->getMessage();
        }, iterator_to_array(CKEditor5::validatePair(Editor::load('test_format'), FilterFormat::load('test_format')))));
        // Note that media_install() grants 'view media' to all users by default.
        $this->adminUser = $this->drupalCreateUser([
            'use text format test_format',
            'bypass node access',
        ]);
        // Create a sample media entity to be embedded.
        $this->createMediaType('image', [
            'id' => 'image',
        ]);
        File::create([
            'uri' => $this->getTestFiles('image')[0]->uri,
        ])
            ->save();
        $this->media = Media::create([
            'bundle' => 'image',
            'name' => 'Screaming hairy armadillo',
            'field_media_image' => [
                [
                    'target_id' => 1,
                    'alt' => 'default alt',
                    'title' => 'default title',
                ],
            ],
        ]);
        $this->media
            ->save();
        $this->createMediaType('file', [
            'id' => 'file',
        ]);
        File::create([
            'uri' => $this->getTestFiles('text')[0]->uri,
        ])
            ->save();
        $this->mediaFile = Media::create([
            'bundle' => 'file',
            'name' => 'Information about screaming hairy armadillo',
            'field_media_file' => [
                [
                    'target_id' => 2,
                ],
            ],
        ]);
        $this->mediaFile
            ->save();
        // Set created media types for each view mode.
        EntityViewDisplay::create([
            'id' => 'media.image.view_mode_1',
            'targetEntityType' => 'media',
            'status' => TRUE,
            'bundle' => 'image',
            'mode' => 'view_mode_1',
        ])->save();
        EntityViewDisplay::create([
            'id' => 'media.image.22222',
            'targetEntityType' => 'media',
            'status' => TRUE,
            'bundle' => 'image',
            'mode' => '22222',
        ])->save();
        // Create a sample host entity to embed media in.
        $this->drupalCreateContentType([
            'type' => 'blog',
        ]);
        $this->host = $this->createNode([
            'type' => 'blog',
            'title' => 'Animals with strange names',
            'body' => [
                'value' => '<drupal-media data-entity-type="media" data-entity-uuid="' . $this->media
                    ->uuid() . '" data-caption="baz"></drupal-media>',
                'format' => 'test_format',
            ],
        ]);
        $this->host
            ->save();
        $this->drupalLogin($this->adminUser);
    }
    
    /**
     * Verifies value of an attribute on the downcast <drupal-media> element.
     *
     * Assumes CKEditor is in source mode.
     *
     * @param string $attribute
     *   The attribute to check.
     * @param string|null $value
     *   Either a string value or if NULL, asserts that <drupal-media> element
     *   doesn't have the attribute.
     *
     * @internal
     */
    protected function assertSourceAttributeSame(string $attribute, ?string $value) : void {
        $dom = $this->getEditorDataAsDom();
        $drupal_media = (new \DOMXPath($dom))->query('//drupal-media');
        $this->assertNotEmpty($drupal_media);
        if ($value === NULL) {
            $this->assertFalse($drupal_media[0]->hasAttribute($attribute));
        }
        else {
            $this->assertSame($value, $drupal_media[0]->getAttribute($attribute));
        }
    }
    
    /**
     * Gets the transfer size of the last preview request.
     *
     * @return int
     *   The size of the bytes transferred.
     */
    protected function getLastPreviewRequestTransferSize() {
        $javascript = <<<JS
(function(){
  return window.performance
    .getEntries()
    .filter(function (entry) {
      return entry.initiatorType == 'fetch' && entry.name.indexOf('/media/test_format/preview') !== -1;
    })
    .pop()
    .transferSize;
})()
JS;
        return $this->getSession()
            ->evaluateScript($javascript);
    }

}