class AjaxTest

class AjaxTest extends WebDriverTestBase {
    
    /**
     * {@inheritdoc}
     */
    public static $modules = [
        'ajax_test',
    ];
    
    /**
     * {@inheritdoc}
     */
    protected $defaultTheme = 'stark';
    public function testAjaxWithAdminRoute() {
        \Drupal::service('theme_installer')->install([
            'stable',
            'seven',
        ]);
        $theme_config = \Drupal::configFactory()->getEditable('system.theme');
        $theme_config->set('admin', 'seven');
        $theme_config->set('default', 'stable');
        $theme_config->save();
        $account = $this->drupalCreateUser([
            'view the administration theme',
        ]);
        $this->drupalLogin($account);
        // First visit the site directly via the URL. This should render it in the
        // admin theme.
        $this->drupalGet('admin/ajax-test/theme');
        $assert = $this->assertSession();
        $assert->pageTextContains('Current theme: seven');
        // Now click the modal, which should also use the admin theme.
        $this->drupalGet('ajax-test/dialog');
        $assert->pageTextNotContains('Current theme: stable');
        $this->clickLink('Link 8 (ajax)');
        $assert->assertWaitOnAjaxRequest();
        $assert->pageTextContains('Current theme: stable');
        $assert->pageTextNotContains('Current theme: seven');
    }
    
    /**
     * Test that AJAX loaded libraries are not retained between requests.
     *
     * @see https://www.drupal.org/node/2647916
     */
    public function testDrupalSettingsCachingRegression() {
        $this->drupalGet('ajax-test/dialog');
        $assert = $this->assertSession();
        $session = $this->getSession();
        // Insert a fake library into the already loaded library settings.
        $fake_library = 'fakeLibrary/fakeLibrary';
        $session->evaluateScript("drupalSettings.ajaxPageState.libraries = drupalSettings.ajaxPageState.libraries + ',{$fake_library}';");
        $libraries = $session->evaluateScript('drupalSettings.ajaxPageState.libraries');
        // Test that the fake library is set.
        $this->assertStringContainsString($fake_library, $libraries);
        // Click on the AJAX link.
        $this->clickLink('Link 8 (ajax)');
        $assert->assertWaitOnAjaxRequest();
        // Test that the fake library is still set after the AJAX call.
        $libraries = $session->evaluateScript('drupalSettings.ajaxPageState.libraries');
        $this->assertStringContainsString($fake_library, $libraries);
        // Reload the page, this should reset the loaded libraries and remove the
        // fake library.
        $this->drupalGet('ajax-test/dialog');
        $libraries = $session->evaluateScript('drupalSettings.ajaxPageState.libraries');
        $this->assertStringNotContainsString($fake_library, $libraries);
        // Click on the AJAX link again, and the libraries should still not contain
        // the fake library.
        $this->clickLink('Link 8 (ajax)');
        $assert->assertWaitOnAjaxRequest();
        $libraries = $session->evaluateScript('drupalSettings.ajaxPageState.libraries');
        $this->assertStringNotContainsString($fake_library, $libraries);
    }
    
    /**
     * Tests that various AJAX responses with DOM elements are correctly inserted.
     *
     * After inserting DOM elements, Drupal JavaScript behaviors should be
     * reattached and all top-level elements of type Node.ELEMENT_NODE need to be
     * part of the context.
     */
    public function testInsertAjaxResponse() {
        $render_single_root = [
            'pre-wrapped-div' => '<div class="pre-wrapped">pre-wrapped<script> var test;</script></div>',
            'pre-wrapped-span' => '<span class="pre-wrapped">pre-wrapped<script> var test;</script></span>',
            'pre-wrapped-whitespace' => ' <div class="pre-wrapped-whitespace">pre-wrapped-whitespace</div>' . "\n",
            'not-wrapped' => 'not-wrapped',
            'comment-string-not-wrapped' => '<!-- COMMENT -->comment-string-not-wrapped',
            'comment-not-wrapped' => '<!-- COMMENT --><div class="comment-not-wrapped">comment-not-wrapped</div>',
            'svg' => '<svg xmlns="http://www.w3.org/2000/svg" width="10" height="10"><rect x="0" y="0" height="10" width="10" fill="green"/></svg>',
            'empty' => '',
        ];
        $render_multiple_root_unwrapper = [
            'mixed' => ' foo <!-- COMMENT -->  foo bar<div class="a class"><p>some string</p></div> additional not wrapped strings, <!-- ANOTHER COMMENT --> <p>final string</p>',
            'top-level-only' => '<div>element #1</div><div>element #2</div>',
            'top-level-only-pre-whitespace' => ' <div>element #1</div><div>element #2</div> ',
            'top-level-only-middle-whitespace-span' => '<span>element #1</span> <span>element #2</span>',
            'top-level-only-middle-whitespace-div' => '<div>element #1</div> <div>element #2</div>',
        ];
        // This is temporary behavior for BC reason.
        $render_multiple_root_wrapper = [];
        foreach ($render_multiple_root_unwrapper as $key => $render) {
            $render_multiple_root_wrapper["{$key}--effect"] = '<div>' . $render . '</div>';
        }
        $expected_renders = array_merge($render_single_root, $render_multiple_root_wrapper, $render_multiple_root_unwrapper);
        // Checking default process of wrapping Ajax content.
        foreach ($expected_renders as $render_type => $expected) {
            $this->assertInsert($render_type, $expected);
        }
        // Checking custom ajaxWrapperMultipleRootElements wrapping.
        $custom_wrapper_multiple_root = <<<JS
    (function(\$, Drupal){
      Drupal.theme.ajaxWrapperMultipleRootElements = function (elements) {
        return \$('<div class="my-favorite-div"></div>').append(elements);
      };
    }(jQuery, Drupal));
JS;
        $expected = '<div class="my-favorite-div"><span>element #1</span> <span>element #2</span></div>';
        $this->assertInsert('top-level-only-middle-whitespace-span--effect', $expected, $custom_wrapper_multiple_root);
        // Checking custom ajaxWrapperNewContent wrapping.
        $custom_wrapper_new_content = <<<JS
    (function(\$, Drupal){
      Drupal.theme.ajaxWrapperNewContent = function (elements) {
        return \$('<div class="div-wrapper-forever"></div>').append(elements);
      };
    }(jQuery, Drupal));
JS;
        $expected = '<div class="div-wrapper-forever"></div>';
        $this->assertInsert('empty', $expected, $custom_wrapper_new_content);
    }
    
    /**
     * Assert insert.
     *
     * @param string $render_type
     *   Render type.
     * @param string $expected
     *   Expected result.
     * @param string $script
     *   Script for additional theming.
     */
    public function assertInsert($render_type, $expected, $script = '') {
        // Check insert to block element.
        $this->drupalGet('ajax-test/insert-block-wrapper');
        $this->getSession()
            ->executeScript($script);
        $this->clickLink("Link html {$render_type}");
        $this->assertWaitPageContains('<div class="ajax-target-wrapper"><div id="ajax-target">' . $expected . '</div></div>');
        $this->drupalGet('ajax-test/insert-block-wrapper');
        $this->getSession()
            ->executeScript($script);
        $this->clickLink("Link replaceWith {$render_type}");
        $this->assertWaitPageContains('<div class="ajax-target-wrapper">' . $expected . '</div>');
        // Check insert to inline element.
        $this->drupalGet('ajax-test/insert-inline-wrapper');
        $this->getSession()
            ->executeScript($script);
        $this->clickLink("Link html {$render_type}");
        $this->assertWaitPageContains('<div class="ajax-target-wrapper"><span id="ajax-target-inline">' . $expected . '</span></div>');
        $this->drupalGet('ajax-test/insert-inline-wrapper');
        $this->getSession()
            ->executeScript($script);
        $this->clickLink("Link replaceWith {$render_type}");
        $this->assertWaitPageContains('<div class="ajax-target-wrapper">' . $expected . '</div>');
    }
    
    /**
     * Asserts that page contains an expected value after waiting.
     *
     * @param string $expected
     *   A needle text.
     */
    protected function assertWaitPageContains($expected) {
        $page = $this->getSession()
            ->getPage();
        $this->assertTrue($page->waitFor(10, function () use ($page, $expected) {
            // Clear content from empty styles and "processed" classes after effect.
            $content = str_replace([
                ' class="processed"',
                ' processed',
                ' style=""',
            ], '', $page->getContent());
            return stripos($content, $expected) !== FALSE;
        }), "Page contains expected value: {$expected}");
    }

}