class MoveBlockFormTest

class MoveBlockFormTest extends WebDriverTestBase {
    use ContextualLinkClickTrait;
    
    /**
     * Path prefix for the field UI for the test bundle.
     *
     * @var string
     */
    const FIELD_UI_PREFIX = 'admin/structure/types/manage/bundle_with_section_field';
    
    /**
     * {@inheritdoc}
     */
    protected static $modules = [
        'layout_builder',
        'block',
        'node',
        'contextual',
    ];
    
    /**
     * {@inheritdoc}
     */
    protected $defaultTheme = 'classy';
    
    /**
     * {@inheritdoc}
     */
    protected function setUp() {
        parent::setUp();
        $page = $this->getSession()
            ->getPage();
        $assert_session = $this->assertSession();
        $this->createContentType([
            'type' => 'bundle_with_section_field',
        ]);
        $this->drupalLogin($this->drupalCreateUser([
            'configure any layout',
            'administer node display',
            'administer node fields',
            'access contextual links',
        ]));
        // Enable layout builder.
        $this->drupalPostForm(static::FIELD_UI_PREFIX . '/display/default', [
            'layout[enabled]' => TRUE,
        ], 'Save');
        $page->clickLink('Manage layout');
        $assert_session->addressEquals(static::FIELD_UI_PREFIX . '/display/default/layout');
        $expected_block_order = [
            '.block-extra-field-blocknodebundle-with-section-fieldlinks',
            '.block-field-blocknodebundle-with-section-fieldbody',
        ];
        $this->assertRegionBlocksOrder(0, 'content', $expected_block_order);
        // Add a top section using the Two column layout.
        $page->clickLink('Add section');
        $assert_session->waitForElementVisible('css', '#drupal-off-canvas');
        $assert_session->assertWaitOnAjaxRequest();
        $page->clickLink('Two column');
        $assert_session->assertWaitOnAjaxRequest();
        $this->assertNotEmpty($assert_session->waitForElementVisible('css', 'input[value="Add section"]'));
        $page->pressButton('Add section');
        $this->assertRegionBlocksOrder(1, 'content', $expected_block_order);
        // Add a 'Powered by Drupal' block in the 'first' region of the new section.
        $first_region_block_locator = '[data-layout-delta="0"].layout--twocol-section [data-region="first"] [data-layout-block-uuid]';
        $assert_session->elementNotExists('css', $first_region_block_locator);
        $assert_session->elementExists('css', '[data-layout-delta="0"].layout--twocol-section [data-region="first"] .layout-builder__add-block')
            ->click();
        $this->assertNotEmpty($assert_session->waitForElementVisible('css', '#drupal-off-canvas a:contains("Powered by Drupal")'));
        $assert_session->assertWaitOnAjaxRequest();
        $page->clickLink('Powered by Drupal');
        $this->assertNotEmpty($assert_session->waitForElementVisible('css', 'input[value="Add block"]'));
        $assert_session->assertWaitOnAjaxRequest();
        $page->pressButton('Add block');
        $assert_session->assertNoElementAfterWait('css', '#drupal-off-canvas');
        $this->assertNotEmpty($assert_session->waitForElementVisible('css', $first_region_block_locator));
        // Ensure the request has completed before the test starts.
        $assert_session->assertWaitOnAjaxRequest();
    }
    
    /**
     * Tests moving a block.
     */
    public function testMoveBlock() {
        $page = $this->getSession()
            ->getPage();
        // Reorder body field in current region.
        $this->openBodyMoveForm(1, 'content', [
            'Links',
            'Body (current)',
        ]);
        $this->moveBlockWithKeyboard('up', 'Body (current)', [
            'Body (current)*',
            'Links',
        ]);
        $page->pressButton('Move');
        $expected_block_order = [
            '.block-field-blocknodebundle-with-section-fieldbody',
            '.block-extra-field-blocknodebundle-with-section-fieldlinks',
        ];
        $this->assertRegionBlocksOrder(1, 'content', $expected_block_order);
        $page->pressButton('Save layout');
        $page->clickLink('Manage layout');
        $this->assertRegionBlocksOrder(1, 'content', $expected_block_order);
        // Move the body block into the first region above existing block.
        $this->openBodyMoveForm(1, 'content', [
            'Body (current)',
            'Links',
        ]);
        $page->selectFieldOption('Region', '0:first');
        $this->assertBlockTable([
            'Powered by Drupal',
            'Body (current)',
        ]);
        $this->moveBlockWithKeyboard('up', 'Body', [
            'Body (current)*',
            'Powered by Drupal',
        ]);
        $page->pressButton('Move');
        $expected_block_order = [
            '.block-field-blocknodebundle-with-section-fieldbody',
            '.block-system-powered-by-block',
        ];
        $this->assertRegionBlocksOrder(0, 'first', $expected_block_order);
        // Ensure the body block is no longer in the content region.
        $this->assertRegionBlocksOrder(1, 'content', [
            '.block-extra-field-blocknodebundle-with-section-fieldlinks',
        ]);
        $page->pressButton('Save layout');
        $page->clickLink('Manage layout');
        $this->assertRegionBlocksOrder(0, 'first', $expected_block_order);
        // Move into the second region that has no existing blocks.
        $this->openBodyMoveForm(0, 'first', [
            'Body (current)',
            'Powered by Drupal',
        ]);
        $page->selectFieldOption('Region', '0:second');
        $this->assertBlockTable([
            'Body (current)',
        ]);
        $page->pressButton('Move');
        $this->assertRegionBlocksOrder(0, 'second', [
            '.block-field-blocknodebundle-with-section-fieldbody',
        ]);
    }
    
    /**
     * Asserts the correct block labels appear in the draggable tables.
     *
     * @param string[] $expected_block_labels
     *   The expected block labels.
     */
    protected function assertBlockTable(array $expected_block_labels) {
        $page = $this->getSession()
            ->getPage();
        $this->assertSession()
            ->assertWaitOnAjaxRequest();
        $block_tds = $page->findAll('css', '.layout-builder-components-table__block-label');
        $this->assertCount(count($block_tds), $expected_block_labels);
        
        /** @var \Behat\Mink\Element\NodeElement $block_td */
        foreach ($block_tds as $block_td) {
            $this->assertSame(array_shift($expected_block_labels), trim($block_td->getText()));
        }
    }
    
    /**
     * Moves a block in the draggable table.
     *
     * @param string $direction
     *   The direction to move the block in the table.
     * @param string $block_label
     *   The block label.
     * @param array $updated_blocks
     *   The updated blocks order.
     */
    protected function moveBlockWithKeyboard($direction, $block_label, array $updated_blocks) {
        $keys = [
            'up' => 38,
            'down' => 40,
        ];
        $key = $keys[$direction];
        $handle = $this->findRowHandle($block_label);
        $handle->keyDown($key);
        $handle->keyUp($key);
        $handle->blur();
        $this->assertBlockTable($updated_blocks);
    }
    
    /**
     * Finds the row handle for a block in the draggable table.
     *
     * @param string $block_label
     *   The block label.
     *
     * @return \Behat\Mink\Element\NodeElement
     *   The row handle element.
     */
    protected function findRowHandle($block_label) {
        $assert_session = $this->assertSession();
        return $assert_session->elementExists('css', "[data-drupal-selector=\"edit-components\"] td:contains(\"{$block_label}\") a.tabledrag-handle");
    }
    
    /**
     * Asserts that blocks are in the correct order for a region.
     *
     * @param int $section_delta
     *   The section delta.
     * @param string $region
     *   The region.
     * @param array $expected_block_selectors
     *   The block selectors.
     */
    protected function assertRegionBlocksOrder($section_delta, $region, array $expected_block_selectors) {
        $page = $this->getSession()
            ->getPage();
        $assert_session = $this->assertSession();
        $assert_session->assertWaitOnAjaxRequest();
        $assert_session->assertNoElementAfterWait('css', '#drupal-off-canvas');
        $region_selector = "[data-layout-delta=\"{$section_delta}\"] [data-region=\"{$region}\"]";
        // Get all blocks currently in the region.
        $blocks = $page->findAll('css', "{$region_selector} [data-layout-block-uuid]");
        $this->assertCount(count($expected_block_selectors), $blocks);
        
        /** @var \Behat\Mink\Element\NodeElement $block */
        foreach ($blocks as $block) {
            $block_selector = array_shift($expected_block_selectors);
            $assert_session->elementsCount('css', "{$region_selector} {$block_selector}", 1);
            $expected_block = $page->find('css', "{$region_selector} {$block_selector}");
            $this->assertSame($expected_block->getAttribute('data-layout-block-uuid'), $block->getAttribute('data-layout-block-uuid'));
        }
    }
    
    /**
     * Open block for the body field.
     *
     * @param int $delta
     *   The section delta where the field should be.
     * @param string $region
     *   The region where the field should be.
     * @param array $initial_blocks
     *   The initial blocks that should be shown in the draggable table.
     */
    protected function openBodyMoveForm($delta, $region, array $initial_blocks) {
        $assert_session = $this->assertSession();
        $body_field_locator = "[data-layout-delta=\"{$delta}\"] [data-region=\"{$region}\"] .block-field-blocknodebundle-with-section-fieldbody";
        $this->clickContextualLink($body_field_locator, 'Move');
        $assert_session->assertWaitOnAjaxRequest();
        $this->assertNotEmpty($assert_session->waitForElementVisible('named', [
            'select',
            'Region',
        ]));
        $assert_session->fieldValueEquals('Region', "{$delta}:{$region}");
        $this->assertBlockTable($initial_blocks);
    }

}