trait ImageTestProviderTrait

trait ImageTestProviderTrait {
    
    /**
     * Tests that alt text is required for images.
     *
     * @see https://ckeditor.com/docs/ckeditor5/latest/framework/guides/architecture/editing-engine.html#conversion
     *
     * @dataProvider providerAltTextRequired
     */
    public function testAltTextRequired(bool $unrestricted) : void {
        // Disable filter_html.
        if ($unrestricted) {
            FilterFormat::load('test_format')->setFilterConfig('filter_html', [
                'status' => FALSE,
            ])
                ->save();
        }
        // Make the test content has a block image and an inline image.
        $img_tag = preg_replace('/width="\\d+" height="\\d+"/', 'width="500"', '<img ' . $this->imageAttributesAsString() . ' />');
        $this->host->body->value .= $img_tag . "<p>{$img_tag}</p>";
        $this->host
            ->save();
        $page = $this->getSession()
            ->getPage();
        $this->drupalGet($this->host
            ->toUrl('edit-form'));
        $this->waitForEditor();
        $assert_session = $this->assertSession();
        // Confirm both of the images exist.
        $this->assertNotEmpty($image_block = $assert_session->waitForElementVisible('css', ".ck-content .ck-widget.image"));
        $this->assertNotEmpty($image_inline = $assert_session->waitForElementVisible('css', ".ck-content .ck-widget.image-inline"));
        // Confirm both of the images have an alt text required warning.
        $this->assertNotEmpty($image_block->find('css', '.image-alternative-text-missing-wrapper'));
        $this->assertNotEmpty($image_inline->find('css', '.image-alternative-text-missing-wrapper'));
        // Add alt text to the block image.
        $image_block->find('css', '.image-alternative-text-missing button')
            ->click();
        $this->assertNotEmpty($assert_session->waitForElementVisible('css', '.ck-balloon-panel'));
        $this->assertVisibleBalloon('.ck-text-alternative-form');
        // Ensure that the missing alt text warning is hidden when the alternative
        // text form is open.
        $assert_session->waitForElement('css', '.ck-content .ck-widget.image .image-alternative-text-missing.ck-hidden');
        $assert_session->elementExists('css', '.ck-content .ck-widget.image-inline .image-alternative-text-missing');
        $assert_session->elementNotExists('css', '.ck-content .ck-widget.image-inline .image-alternative-text-missing.ck-hidden');
        // Ensure that the missing alt text error is not added to decorative images.
        $this->assertNotEmpty($decorative_button = $this->getBalloonButton('Decorative image'));
        $assert_session->elementExists('css', '.ck-balloon-panel .ck-text-alternative-form input[type=text]');
        $decorative_button->click();
        $assert_session->elementExists('css', '.ck-content .ck-widget.image .image-alternative-text-missing.ck-hidden');
        $assert_session->elementExists('css', ".ck-content .ck-widget.image-inline .image-alternative-text-missing-wrapper");
        $assert_session->elementNotExists('css', '.ck-content .ck-widget.image-inline .image-alternative-text-missing.ck-hidden');
        // Ensure that the missing alt text error is removed after saving the
        // changes.
        $this->assertNotEmpty($save_button = $this->getBalloonButton('Save'));
        $save_button->click();
        $this->assertTrue($assert_session->waitForElementRemoved('css', ".ck-content .ck-widget.image .image-alternative-text-missing-wrapper"));
        $assert_session->elementExists('css', '.ck-content .ck-widget.image-inline .image-alternative-text-missing-wrapper');
        // Ensure that the decorative image downcasts into empty alt attribute.
        $editor_dom = $this->getEditorDataAsDom();
        $decorative_img = $editor_dom->getElementsByTagName('img')
            ->item(0);
        $this->assertTrue($decorative_img->hasAttribute('alt'));
        $this->assertEmpty($decorative_img->getAttribute('alt'));
        // Ensure that missing alt text error is not added to images with alt text.
        $this->assertNotEmpty($alt_text_button = $this->getBalloonButton('Change image alternative text'));
        $alt_text_button->click();
        $decorative_button->click();
        $this->assertNotEmpty($save_button = $this->getBalloonButton('Save'));
        $this->assertTrue($save_button->hasClass('ck-disabled'));
        $this->assertNotEmpty($alt_override_input = $page->find('css', '.ck-balloon-panel .ck-text-alternative-form input[type=text]'));
        $alt_override_input->setValue('There is now alt text');
        $this->assertTrue($assert_session->waitForElementRemoved('css', '.ck-balloon-panel .ck-text-alternative-form .ck-disabled'));
        $this->assertFalse($save_button->hasClass('ck-disabled'));
        $save_button->click();
        // Save the node and confirm that the alt text is retained.
        $page->pressButton('Save');
        $this->assertNotEmpty($assert_session->waitForElement('css', 'img[alt="There is now alt text"]'));
        // Ensure that alt form is opened after image upload.
        $this->drupalGet($this->host
            ->toUrl('edit-form'));
        $this->waitForEditor();
        $this->addImage();
        $this->assertNotEmpty($assert_session->waitForElementVisible('css', '.ck-text-alternative-form'));
        $this->assertVisibleBalloon('.ck-text-alternative-form');
    }
    public static function providerAltTextRequired() : array {
        return [
            'Restricted' => [
                FALSE,
            ],
            'Unrestricted' => [
                TRUE,
            ],
        ];
    }
    
    /**
     * Tests alignment integration.
     *
     * @dataProvider providerAlignment
     */
    public function testAlignment(string $image_type) : void {
        $assert_session = $this->assertSession();
        $page = $this->getSession()
            ->getPage();
        // Make the test content have either a block image or an inline image.
        $img_tag = '<img alt="drupalimage test image" ' . $this->imageAttributesAsString() . ' />';
        $this->host->body->value .= $image_type === 'block' ? $img_tag : "<p>{$img_tag}</p>";
        $this->host
            ->save();
        $image_selector = $image_type === 'block' ? '.ck-widget.image' : '.ck-widget.image-inline';
        $default_alignment = $image_type === 'block' ? 'Break text' : 'In line';
        $this->drupalGet($this->host
            ->toUrl('edit-form'));
        $this->waitForEditor();
        $this->assertNotEmpty($assert_session->waitForElementVisible('css', $image_selector));
        // Ensure that the default alignment option matches expectation.
        $this->click($image_selector);
        $this->assertVisibleBalloon('[aria-label="Image toolbar"]');
        $this->assertTrue($this->getBalloonButton($default_alignment)
            ->hasClass('ck-on'));
        $editor_dom = $this->getEditorDataAsDom();
        $drupal_media_element = $editor_dom->getElementsByTagName('img')
            ->item(0);
        $this->assertFalse($drupal_media_element->hasAttribute('data-align'));
        $this->getBalloonButton('Align center and break text')
            ->click();
        // Assert the alignment class exists after editing downcast.
        $this->assertNotEmpty($assert_session->waitForElement('css', '.ck-widget.image.image-style-align-center'));
        $editor_dom = $this->getEditorDataAsDom();
        $drupal_media_element = $editor_dom->getElementsByTagName('img')
            ->item(0);
        $this->assertEquals('center', $drupal_media_element->getAttribute('data-align'));
        $page->pressButton('Save');
        // Check that the 'content has been updated' message status appears to confirm we left the editor.
        $this->assertNotEmpty($assert_session->waitForElementVisible('css', '[data-drupal-messages]'));
        // Check that the class is correct in the front end.
        $assert_session->elementExists('css', 'img.align-center');
        // Go back to the editor to check that the alignment class still exists.
        $edit_url = $this->getSession()
            ->getCurrentURL() . '/edit';
        $this->drupalGet($edit_url);
        $this->waitForEditor();
        $assert_session->elementExists('css', '.ck-widget.image.image-style-align-center');
        // Ensure that "Centered image" alignment option is selected.
        $this->click('.ck-widget.image');
        $this->assertVisibleBalloon('[aria-label="Image toolbar"]');
        $this->assertTrue($this->getBalloonButton('Align center and break text')
            ->hasClass('ck-on'));
        $this->getBalloonButton('Break text')
            ->click();
        $this->assertTrue($assert_session->waitForElementRemoved('css', '.ck-widget.image.image-style-align-center'));
        $editor_dom = $this->getEditorDataAsDom();
        $drupal_media_element = $editor_dom->getElementsByTagName('img')
            ->item(0);
        $this->assertFalse($drupal_media_element->hasAttribute('data-align'));
    }
    public static function providerAlignment() {
        return [
            'Block image' => [
                'block',
            ],
            'Inline image' => [
                'inline',
            ],
        ];
    }
    
    /**
     * Ensures that width attribute upcasts and downcasts correctly.
     *
     * @param string $width
     *   The width input for the image.
     *
     * @dataProvider providerWidth
     */
    public function testWidth(string $width) : void {
        $page = $this->getSession()
            ->getPage();
        $assert_session = $this->assertSession();
        // Despite the absence of a `height` attribute on the `<img>`, CKEditor 5
        // should generate an appropriate `height`, matching with the aspect ratio
        // of the image.
        $expected_computed_height = $width;
        if (!str_ends_with($width, '%')) {
            $ratio = $width / (int) $this->imageAttributes()['width'];
            $expected_computed_height = (string) (int) round($ratio * (int) $this->imageAttributes()['height']);
        }
        // Add image to the host body.
        $this->host->body->value = sprintf('<img data-foo="bar" alt="drupalimage test image" ' . $this->imageAttributesAsString() . ' width="%s" />', $width);
        $this->host
            ->save();
        $this->drupalGet($this->host
            ->toUrl('edit-form'));
        $this->waitForEditor();
        // Ensure that the image is upcast as expected. In the editing view, the
        // width attribute should downcast to an inline style on the container
        // element.
        $assert_session->waitForElementVisible('css', ".ck-widget.image");
        $this->assertNotEmpty($assert_session->waitForElementVisible('css', ".ck-widget.image[style] img"));
        // Ensure that the width attribute is retained on downcast.
        $editor_data = $this->getEditorDataAsDom();
        $img_in_editor = $editor_data->getElementsByTagName('img')
            ->item(0);
        $this->assertSame($width, $img_in_editor->getAttribute('width'));
        $this->assertSame($expected_computed_height, $img_in_editor->getAttribute('height'));
        // Save the node and ensure that the width attribute is retained, and ensure
        // that a natural image ratio-respecting height attribute has been added.
        $page->pressButton('Save');
        $this->assertNotEmpty($assert_session->waitForElement('css', "img[width='{$width}'][height='{$expected_computed_height}']"));
    }
    
    /**
     * Data provider for ::testWidth().
     *
     * @return string[][]
     */
    public static function providerWidth() : array {
        return [
            'Image resize with percent unit (only allowed in HTML 4)' => [
                'width' => '33%',
            ],
            'Image resize with (implied) px unit' => [
                'width' => '100',
            ],
        ];
    }
    
    /**
     * Tests the image resize plugin.
     *
     * Confirms that enabling the resize plugin introduces the resize class to
     * images within CKEditor 5.
     *
     * @param bool $is_resize_enabled
     *   Boolean flag to test enabled or disabled.
     *
     * @dataProvider providerResize
     */
    public function testResize(bool $is_resize_enabled) : void {
        // Disable resize plugin because it is enabled by default.
        if (!$is_resize_enabled) {
            Editor::load('test_format')->setSettings([
                'toolbar' => [
                    'items' => [
                        'drupalInsertImage',
                    ],
                ],
                'plugins' => [
                    'ckeditor5_imageResize' => [
                        'allow_resize' => FALSE,
                    ],
                ],
            ])
                ->save();
        }
        $page = $this->getSession()
            ->getPage();
        $assert_session = $this->assertSession();
        $this->drupalGet('node/add');
        $page->fillField('title[0][value]', 'My test content');
        $this->addImage();
        $image_figure = $assert_session->waitForElementVisible('css', 'figure');
        $this->assertSame($is_resize_enabled, $image_figure->hasClass('ck-widget_with-resizer'));
    }
    
    /**
     * Data provider for ::testResize().
     *
     * @return array
     *   The test cases.
     */
    public static function providerResize() : array {
        return [
            'Image resize is enabled' => [
                'is_resize_enabled' => TRUE,
            ],
            'Image resize is disabled' => [
                'is_resize_enabled' => FALSE,
            ],
        ];
    }

}