class MediaLinkabilityTest

class MediaLinkabilityTest extends MediaTestBase {
    
    /**
     * Ensures arbitrary attributes can be added on links wrapping media via GHS.
     *
     * @dataProvider providerLinkability
     */
    public function testLinkedMediaArbitraryHtml(bool $unrestricted) : void {
        $assert_session = $this->assertSession();
        $editor = Editor::load('test_format');
        $settings = $editor->getSettings();
        $filter_format = $editor->getFilterFormat();
        if ($unrestricted) {
            $filter_format->setFilterConfig('filter_html', [
                'status' => FALSE,
            ]);
        }
        else {
            // Allow the data-foo attribute in <a> via GHS. Also, add support for div's
            // with data-foo attribute to ensure that linked drupal-media elements can
            // be wrapped with <div>.
            $settings['plugins']['ckeditor5_sourceEditing']['allowed_tags'] = [
                '<a data-foo>',
                '<div data-bar>',
            ];
            $editor->setSettings($settings);
            $filter_format->setFilterConfig('filter_html', [
                'status' => TRUE,
                'settings' => [
                    'allowed_html' => '<p> <br> <strong> <em> <a href data-foo> <drupal-media data-entity-type data-entity-uuid data-align data-caption alt data-view-mode> <div data-bar>',
                ],
            ]);
        }
        $editor->save();
        $filter_format->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')))));
        // Wrap the existing drupal-media tag with a div and an a that include
        // attributes allowed via GHS.
        $original_value = $this->host->body->value;
        $this->host->body->value = '<div data-bar="baz"><a href="https://example.com" data-foo="bar">' . $original_value . '</a></div>';
        $this->host
            ->save();
        $this->drupalGet($this->host
            ->toUrl('edit-form'));
        // Confirm data-foo is present in the editing view.
        $this->assertNotEmpty($link = $assert_session->waitForElementVisible('css', 'a[href="https://example.com"]'));
        $this->assertEquals('bar', $link->getAttribute('data-foo'));
        // Confirm that the media is wrapped by the div on the editing view.
        $assert_session->elementExists('css', 'div[data-bar="baz"] > .drupal-media > a[href="https://example.com"] > div[data-drupal-media-preview]');
        // Confirm that drupal-media is wrapped by the div and a, and that GHS has
        // retained arbitrary HTML allowed by source editing.
        $editor_dom = new \DOMXPath($this->getEditorDataAsDom());
        $this->assertNotEmpty($editor_dom->query('//div[@data-bar="baz"]/a[@data-foo="bar"]/drupal-media'));
    }
    
    /**
     * Tests linkability of the media CKEditor widget.
     *
     * Due to the very different HTML markup generated for the editing view and
     * the data view, this is explicitly testing the "editingDowncast" and
     * "dataDowncast" results. These are CKEditor 5 concepts.
     *
     * @see https://ckeditor.com/docs/ckeditor5/latest/framework/guides/architecture/editing-engine.html#conversion
     *
     * @dataProvider providerLinkability
     */
    public function testLinkability(bool $unrestricted) : void {
        // Disable filter_html.
        if ($unrestricted) {
            FilterFormat::load('test_format')->setFilterConfig('filter_html', [
                'status' => FALSE,
            ])
                ->save();
        }
        $page = $this->getSession()
            ->getPage();
        $this->drupalGet($this->host
            ->toUrl('edit-form'));
        $this->waitForEditor();
        $assert_session = $this->assertSession();
        // Initial state: the Drupal Media CKEditor Widget is not selected.
        $drupalmedia = $assert_session->waitForElementVisible('css', '.ck-content .ck-widget.drupal-media');
        $this->assertNotEmpty($drupalmedia);
        $this->assertFalse($drupalmedia->hasClass('.ck-widget_selected'));
        // Assert the "editingDowncast" HTML before making changes.
        $assert_session->elementExists('css', '.ck-content .ck-widget.drupal-media > [data-drupal-media-preview]');
        // Assert the "dataDowncast" HTML before making changes.
        $xpath = new \DOMXPath($this->getEditorDataAsDom());
        $this->assertNotEmpty($xpath->query('//drupal-media'));
        $this->assertEmpty($xpath->query('//a'));
        // Assert the link button is present and not pressed.
        $link_button = $this->getEditorButton('Link');
        $this->assertSame('false', $link_button->getAttribute('aria-pressed'));
        // Wait for the preview to load.
        $preview = $assert_session->waitForElement('css', '.ck-content .ck-widget.drupal-media [data-drupal-media-preview="ready"]');
        $this->assertNotEmpty($preview);
        // Tests linking Drupal media.
        $drupalmedia->click();
        $this->assertTrue($drupalmedia->hasClass('ck-widget_selected'));
        $this->assertEditorButtonEnabled('Link');
        // Assert structure of image toolbar balloon.
        $this->assertVisibleBalloon('.ck-toolbar[aria-label="Drupal Media toolbar"]');
        $link_media_button = $this->getBalloonButton('Link media');
        // Click the "Link media" button.
        $this->assertSame('false', $link_media_button->getAttribute('aria-pressed'));
        $link_media_button->press();
        // Assert structure of link form balloon.
        $balloon = $this->assertVisibleBalloon('.ck-link-form');
        $url_input = $balloon->find('css', '.ck-labeled-field-view__input-wrapper .ck-input-text');
        // Fill in link form balloon's <input> and hit "Save".
        $url_input->setValue('http://linking-embedded-media.com');
        $balloon->pressButton('Save');
        // Assert the "editingDowncast" HTML after making changes. Assert the link
        // exists, then assert the link exists. Then assert the expected DOM
        // structure in detail.
        $assert_session->elementExists('css', '.ck-content a[href="http://linking-embedded-media.com"]');
        $assert_session->elementExists('css', '.ck-content .drupal-media.ck-widget > a[href="http://linking-embedded-media.com"] > div[aria-label] > article > div > img[src*="image-test.png"]');
        // Assert the "dataDowncast" HTML after making changes.
        $xpath = new \DOMXPath($this->getEditorDataAsDom());
        $this->assertNotEmpty($xpath->query('//drupal-media'));
        $this->assertNotEmpty($xpath->query('//a[@href="http://linking-embedded-media.com"]'));
        $this->assertNotEmpty($xpath->query('//a[@href="http://linking-embedded-media.com"]/drupal-media'));
        // Ensure that the media caption is retained and not linked as a result of
        // linking media.
        $this->assertNotEmpty($xpath->query('//a[@href="http://linking-embedded-media.com"]/drupal-media[@data-caption="baz"]'));
        // Add `class="trusted"` to the link.
        $this->assertEmpty($xpath->query('//a[@href="http://linking-embedded-media.com" and @class="trusted"]'));
        $this->pressEditorButton('Source');
        $source_text_area = $assert_session->waitForElement('css', '.ck-source-editing-area textarea');
        $this->assertNotEmpty($source_text_area);
        $new_value = str_replace('<a ', '<a class="trusted" ', $source_text_area->getValue());
        $source_text_area->setValue('<p>temp</p>');
        $source_text_area->setValue($new_value);
        $this->pressEditorButton('Source');
        // When unrestricted, additional attributes on links should be retained.
        $xpath = new \DOMXPath($this->getEditorDataAsDom());
        $this->assertCount($unrestricted ? 1 : 0, $xpath->query('//a[@href="http://linking-embedded-media.com" and @class="trusted"]'));
        // Save the entity whose text field is being edited.
        $page->pressButton('Save');
        // Assert the HTML the end user sees.
        $assert_session->elementExists('css', $unrestricted ? 'a[href="http://linking-embedded-media.com"].trusted img[src*="image-test.png"]' : 'a[href="http://linking-embedded-media.com"] img[src*="image-test.png"]');
        // Go back to edit the now *linked* <drupal-media>. Everything from this
        // point onwards is effectively testing "upcasting" and proving there is no
        // data loss.
        $this->drupalGet($this->host
            ->toUrl('edit-form'));
        $this->waitForEditor();
        // Assert the "dataDowncast" HTML before making changes.
        $xpath = new \DOMXPath($this->getEditorDataAsDom());
        $this->assertNotEmpty($xpath->query('//drupal-media'));
        $this->assertNotEmpty($xpath->query('//a[@href="http://linking-embedded-media.com"]'));
        $this->assertNotEmpty($xpath->query('//a[@href="http://linking-embedded-media.com"]/drupal-media'));
        // Tests unlinking media.
        $drupalmedia->click();
        $this->assertEditorButtonEnabled('Link');
        $this->assertSame('true', $this->getEditorButton('Link')
            ->getAttribute('aria-pressed'));
        // Assert structure of Drupal media toolbar balloon.
        $this->assertVisibleBalloon('.ck-toolbar[aria-label="Drupal Media toolbar"]');
        $link_media_button = $this->getBalloonButton('Link media');
        $this->assertSame('true', $link_media_button->getAttribute('aria-pressed'));
        $link_media_button->click();
        // Assert structure of link actions balloon.
        $this->getBalloonButton('Edit link');
        $unlink_image_button = $this->getBalloonButton('Unlink');
        // Click the "Unlink" button.
        $unlink_image_button->click();
        $this->assertSame('false', $this->getEditorButton('Link')
            ->getAttribute('aria-pressed'));
        // Assert the "editingDowncast" HTML after making changes. Assert the link
        // exists, then assert no link exists. Then assert the expected DOM
        // structure in detail.
        $assert_session->elementNotExists('css', '.ck-content a');
        $assert_session->elementExists('css', '.ck-content .drupal-media.ck-widget > div[aria-label] > article > div > img[src*="image-test.png"]');
        // Ensure that figcaption exists.
        // @see https://www.drupal.org/project/drupal/issues/3268318
        $assert_session->elementExists('css', '.ck-content .drupal-media.ck-widget > figcaption');
        // Assert the "dataDowncast" HTML after making changes.
        $xpath = new \DOMXPath($this->getEditorDataAsDom());
        $this->assertNotEmpty($xpath->query('//drupal-media'));
        $this->assertEmpty($xpath->query('//a'));
    }
    public static function providerLinkability() : array {
        return [
            'restricted' => [
                FALSE,
            ],
            'unrestricted' => [
                TRUE,
            ],
        ];
    }
    
    /**
     * Ensure that manual link decorators work with linkable media.
     *
     * @dataProvider providerLinkability
     */
    public function testLinkManualDecorator(bool $unrestricted) : void {
        \Drupal::service('module_installer')->install([
            'ckeditor5_manual_decorator_test',
        ]);
        $this->resetAll();
        $decorator = 'Open in a new tab';
        $decorator_attributes = '[@target="_blank"][@rel="noopener noreferrer"][@class="link-new-tab"]';
        // Disable filter_html.
        if ($unrestricted) {
            FilterFormat::load('test_format')->setFilterConfig('filter_html', [
                'status' => FALSE,
            ])
                ->save();
            $decorator = 'Pink color';
            $decorator_attributes = '[@style="color:pink;"]';
        }
        $this->drupalGet($this->host
            ->toUrl('edit-form'));
        $this->waitForEditor();
        $assert_session = $this->assertSession();
        $page = $this->getSession()
            ->getPage();
        $this->assertNotEmpty($drupalmedia = $assert_session->waitForElementVisible('css', '.ck-content .ck-widget.drupal-media'));
        $drupalmedia->click();
        $this->assertVisibleBalloon('.ck-toolbar[aria-label="Drupal Media toolbar"]');
        // Turn off caption, so we don't accidentally put our link in that text
        // field instead of on the actual media.
        $this->getBalloonButton('Toggle caption off')
            ->click();
        $assert_session->assertNoElementAfterWait('css', 'figure.drupal-media > figcaption');
        $this->assertVisibleBalloon('.ck-toolbar[aria-label="Drupal Media toolbar"]');
        $this->getBalloonButton('Link media')
            ->click();
        $balloon = $this->assertVisibleBalloon('.ck-link-form');
        $url_input = $balloon->find('css', '.ck-labeled-field-view__input-wrapper .ck-input-text');
        $url_input->setValue('http://linking-embedded-media.com');
        $this->getBalloonButton($decorator)
            ->click();
        $balloon->pressButton('Save');
        $this->assertNotEmpty($assert_session->waitForElementVisible('css', '.drupal-media a'));
        $this->assertVisibleBalloon('.ck-link-actions');
        $xpath = new \DOMXPath($this->getEditorDataAsDom());
        $this->assertNotEmpty($xpath->query("//a[@href='http://linking-embedded-media.com']{$decorator_attributes}"));
        $this->assertNotEmpty($xpath->query("//a[@href='http://linking-embedded-media.com']{$decorator_attributes}/drupal-media"));
        // Ensure that manual decorators upcast correctly.
        $page->pressButton('Save');
        $this->drupalGet($this->host
            ->toUrl('edit-form'));
        $this->assertNotEmpty($drupalmedia = $assert_session->waitForElementVisible('css', '.ck-content .ck-widget.drupal-media'));
        $xpath = new \DOMXPath($this->getEditorDataAsDom());
        $this->assertNotEmpty($xpath->query("//a[@href='http://linking-embedded-media.com']{$decorator_attributes}"));
        $this->assertNotEmpty($xpath->query("//a[@href='http://linking-embedded-media.com']{$decorator_attributes}/drupal-media"));
        // Finally, ensure that media can be unlinked.
        $drupalmedia->click();
        $this->assertVisibleBalloon('.ck-toolbar[aria-label="Drupal Media toolbar"]');
        $this->getBalloonButton('Link media')
            ->click();
        $this->assertVisibleBalloon('.ck-link-actions');
        $this->getBalloonButton('Unlink')
            ->click();
        $this->assertTrue($assert_session->waitForElementRemoved('css', '.drupal-media a'));
        $xpath = new \DOMXPath($this->getEditorDataAsDom());
        $this->assertEmpty($xpath->query('//a'));
        $this->assertNotEmpty($xpath->query('//drupal-media'));
    }

}