class BlockDragTest

class BlockDragTest extends WebDriverTestBase {
    
    /**
     * {@inheritdoc}
     */
    protected static $modules = [
        'user',
        'block',
        'node',
    ];
    
    /**
     * {@inheritdoc}
     */
    protected $defaultTheme = 'olivero';
    
    /**
     * {@inheritdoc}
     */
    protected function setUp() : void {
        parent::setUp();
        $admin_user = $this->drupalCreateUser([
            'administer blocks',
        ]);
        $this->drupalLogin($admin_user);
    }
    
    /**
     * Tests drag and drop blocks.
     */
    public function testDragAndDropBlocks() : void {
        // Resize window to work around https://github.com/bitovi/syn/issues/164.
        $this->getSession()
            ->resizeWindow(1024, 2048);
        $this->drupalGet('admin/structure/block');
        $assertSession = $this->assertSession();
        $session = $this->getSession();
        $page = $session->getPage();
        // Test if drag orientation on block layout page was applied with success.
        $this->assertNotEmpty($assertSession->waitForElementVisible('css', '.tabledrag-handle-y'));
        // Dragging main-menu and status messages to header region.
        $siteBranding = $this->getDragRow($page, 'edit-blocks-olivero-site-branding');
        $mainMenuRow = $this->getDragRow($page, 'edit-blocks-olivero-main-menu');
        $mainMenuRow->dragTo($siteBranding);
        $messages = $this->getDragRow($page, 'edit-blocks-olivero-messages');
        $messages->dragTo($siteBranding);
        // Test if both blocks above was positioned on the header region.
        $this->assertEquals('header', $page->findField('edit-blocks-olivero-main-menu-region')
            ->getValue(), 'Main menu should be positioned on header region');
        $this->assertEquals('header', $page->findField('edit-blocks-olivero-messages-region')
            ->getValue(), 'Status messages should be positioned on header region');
        // Check if the message unsaved changed appears.
        $assertSession->pageTextContains('You have unsaved changes.');
        // Test if the message for empty regions appear after drag the unique block on the region.
        $noBlockMessage = $page->find('css', 'tr[data-drupal-selector="edit-blocks-region-primary-menu-message"] td')
            ->getText();
        $this->assertSession()
            ->assert($noBlockMessage === 'No blocks in this region', 'Region primary menu should be empty.');
        // Testing drag row to an empty region.
        $pageTitle = $this->getDragRow($page, 'edit-blocks-olivero-page-title');
        $heroRegion = $page->find('css', 'tr[data-drupal-selector="edit-blocks-region-hero-message"]');
        $pageTitle->dragTo($heroRegion);
        $this->assertSession()
            ->assert($page->find('css', 'tr[data-drupal-selector="edit-blocks-region-hero-message"] td')
            ->getText() !== 'No blocks in this region', "Region here shouldn't be empty");
    }
    
    /**
     * Helper function to find block tr element on the page.
     */
    private function getDragRow($page, $blockId) {
        return $page->find('css', '#blocks tbody tr[data-drupal-selector="' . $blockId . '"] a.tabledrag-handle');
    }

}