class BookJavascriptTest

class BookJavascriptTest extends WebDriverTestBase {
    
    /**
     * {@inheritdoc}
     */
    protected static $modules = [
        'book',
    ];
    
    /**
     * {@inheritdoc}
     */
    protected $defaultTheme = 'stark';
    
    /**
     * Tests re-ordering of books.
     */
    public function testBookOrdering() {
        $book = Node::create([
            'type' => 'book',
            'title' => 'Book',
            'book' => [
                'bid' => 'new',
            ],
        ]);
        $book->save();
        $page1 = Node::create([
            'type' => 'book',
            'title' => '1st page',
            'book' => [
                'bid' => $book->id(),
                'pid' => $book->id(),
                'weight' => 0,
            ],
        ]);
        $page1->save();
        $page2 = Node::create([
            'type' => 'book',
            'title' => '2nd page',
            'book' => [
                'bid' => $book->id(),
                'pid' => $book->id(),
                'weight' => 1,
            ],
        ]);
        $page2->save();
        // Head to admin screen and attempt to re-order.
        $this->drupalLogin($this->drupalCreateUser([
            'administer book outlines',
        ]));
        $this->drupalGet('admin/structure/book/' . $book->id());
        $page = $this->getSession()
            ->getPage();
        $weight_select1 = $page->findField("table[book-admin-{$page1->id()}][weight]");
        $weight_select2 = $page->findField("table[book-admin-{$page2->id()}][weight]");
        // Check that rows weight selects are hidden.
        $this->assertFalse($weight_select1->isVisible());
        $this->assertFalse($weight_select2->isVisible());
        // Check that '2nd page' row is heavier than '1st page' row.
        $this->assertGreaterThan($weight_select1->getValue(), $weight_select2->getValue());
        // Check that '1st page' precedes the '2nd page'.
        $this->assertOrderInPage([
            '1st page',
            '2nd page',
        ]);
        // Check that the 'unsaved changes' text is not present in the message area.
        $this->assertSession()
            ->pageTextNotContains('You have unsaved changes.');
        // Drag and drop the '1st page' row over the '2nd page' row.
        // @todo Test also the reverse, '2nd page' over '1st page', when
        //   https://www.drupal.org/node/2769825 is fixed.
        // @see https://www.drupal.org/node/2769825
        $dragged = $this->xpath("//tr[@data-drupal-selector='edit-table-book-admin-{$page1->id()}']//a[@class='tabledrag-handle']")[0];
        $target = $this->xpath("//tr[@data-drupal-selector='edit-table-book-admin-{$page2->id()}']//a[@class='tabledrag-handle']")[0];
        $dragged->dragTo($target);
        // Give javascript some time to manipulate the DOM.
        $this->assertJsCondition('jQuery(".tabledrag-changed-warning").is(":visible")');
        // Check that the 'unsaved changes' text appeared in the message area.
        $this->assertSession()
            ->pageTextContains('You have unsaved changes.');
        // Check that '2nd page' page precedes the '1st page'.
        $this->assertOrderInPage([
            '2nd page',
            '1st page',
        ]);
        $this->submitForm([], 'Save book pages');
        $this->assertSession()
            ->pageTextContains(new FormattableMarkup('Updated book @book.', [
            '@book' => $book->getTitle(),
        ]));
        // Check that page reordering was done in the backend for drag-n-drop.
        $page1 = Node::load($page1->id());
        $page2 = Node::load($page2->id());
        $this->assertGreaterThan($page2->book['weight'], $page1->book['weight']);
        // Check again that '2nd page' is on top after form submit in the UI.
        $this->assertOrderInPage([
            '2nd page',
            '1st page',
        ]);
        // Toggle row weight selects as visible.
        $page->findButton('Show row weights')
            ->click();
        // Check that rows weight selects are visible.
        $this->assertTrue($weight_select1->isVisible());
        $this->assertTrue($weight_select2->isVisible());
        // Check that '1st page' row became heavier than '2nd page' row.
        $this->assertGreaterThan($weight_select2->getValue(), $weight_select1->getValue());
        // Reverse again using the weight fields. Use the current values so the test
        // doesn't rely on knowing the values in the select boxes.
        $value1 = $weight_select1->getValue();
        $value2 = $weight_select2->getValue();
        $weight_select1->setValue($value2);
        $weight_select2->setValue($value1);
        // Toggle row weight selects back to hidden.
        $page->findButton('Hide row weights')
            ->click();
        // Check that rows weight selects are hidden again.
        $this->assertFalse($weight_select1->isVisible());
        $this->assertFalse($weight_select2->isVisible());
        $this->submitForm([], 'Save book pages');
        $this->assertSession()
            ->pageTextContains(new FormattableMarkup('Updated book @book.', [
            '@book' => $book->getTitle(),
        ]));
        // Check that the '1st page' is first again.
        $this->assertOrderInPage([
            '1st page',
            '2nd page',
        ]);
        // Check that page reordering was done in the backend for manual weight
        // field usage.
        $page1 = Node::load($page1->id());
        $page2 = Node::load($page2->id());
        $this->assertGreaterThan($page2->book['weight'], $page1->book['weight']);
    }
    
    /**
     * Asserts that several pieces of markup are in a given order in the page.
     *
     * @param string[] $items
     *   An ordered list of strings.
     *
     * @throws \Behat\Mink\Exception\ExpectationException
     *   When any of the given string is not found.
     *
     * @internal
     *
     * @todo Remove this once https://www.drupal.org/node/2817657 is committed.
     */
    protected function assertOrderInPage(array $items) : void {
        $session = $this->getSession();
        $text = $session->getPage()
            ->getHtml();
        $strings = [];
        foreach ($items as $item) {
            if (($pos = strpos($text, $item)) === FALSE) {
                throw new ExpectationException("Cannot find '{$item}' in the page", $session->getDriver());
            }
            $strings[$pos] = $item;
        }
        ksort($strings);
        $ordered = implode(', ', array_map(function ($item) {
            return "'{$item}'";
        }, $items));
        $this->assertSame($items, array_values($strings), "Found strings, ordered as: {$ordered}.");
    }
    
    /**
     * Tests book outline AJAX request.
     */
    public function testBookAddOutline() {
        $this->drupalLogin($this->drupalCreateUser([
            'create book content',
            'create new books',
            'add content to books',
        ]));
        $this->drupalGet('node/add/book');
        $assert_session = $this->assertSession();
        $session = $this->getSession();
        $page = $session->getPage();
        $page->find('css', '#edit-book')
            ->click();
        $book_select = $page->findField("book[bid]");
        $book_select->setValue('new');
        $assert_session->waitForText('This will be the top-level page in this book.');
        $assert_session->pageTextContains('This will be the top-level page in this book.');
        $assert_session->pageTextNotContains('No book selected.');
        $book_select->setValue(0);
        $assert_session->waitForText('No book selected.');
        $assert_session->pageTextContains('No book selected.');
        $assert_session->pageTextNotContains('This will be the top-level page in this book.');
    }

}