class AreaDisplayLinkTest

class AreaDisplayLinkTest extends ViewsKernelTestBase {
    
    /**
     * {@inheritdoc}
     */
    protected static $modules = [
        'system',
        'user',
        'filter',
    ];
    
    /**
     * {@inheritdoc}
     */
    public static $testViews = [
        'test_view',
    ];
    
    /**
     * {@inheritdoc}
     */
    protected function setUp($import_test_views = TRUE) : void {
        parent::setUp($import_test_views);
        $this->installConfig([
            'system',
            'filter',
        ]);
        $this->installEntitySchema('user');
        $view = Views::getView('test_view');
        // Add two page displays and a block display.
        $page_1 = $view->newDisplay('page', 'Page 1', 'page_1');
        $page_1->setOption('path', 'page_1');
        $page_2 = $view->newDisplay('page', 'Page 2', 'page_2');
        $page_2->setOption('path', 'page_2');
        $view->newDisplay('block', 'Block 1', 'block_1');
        // Add default filter criteria, sort criteria, pager settings and contextual
        // filters.
        $default = $view->displayHandlers
            ->get('default');
        $default->setOption('filters', [
            'status' => [
                'id' => 'status',
                'table' => 'views_test_data',
                'field' => 'status',
                'relationship' => 'none',
                'operator' => '=',
                'value' => 1,
            ],
        ]);
        $default->setOption('sorts', [
            'name' => [
                'id' => 'name',
                'table' => 'views_test_data',
                'field' => 'name',
                'relationship' => 'none',
                'order' => 'ASC',
            ],
        ]);
        $default->setOption('pager', [
            'type' => 'mini',
            'options' => [
                'items_per_page' => 10,
            ],
        ]);
        $default->setOption('arguments', [
            'uid' => [
                'id' => 'uid',
                'table' => 'views_test_data',
                'field' => 'uid',
                'relationship' => 'none',
            ],
        ]);
        // Add display links to both page displays.
        $display_links = [
            'display_link_1' => [
                'id' => 'display_link_1',
                'table' => 'views',
                'field' => 'display_link',
                'display_id' => 'page_1',
                'label' => 'Page 1',
                'plugin_id' => 'display_link',
            ],
            'display_link_2' => [
                'id' => 'display_link_2',
                'table' => 'views',
                'field' => 'display_link',
                'display_id' => 'page_2',
                'label' => 'Page 2',
                'plugin_id' => 'display_link',
            ],
        ];
        $default->setOption('header', $display_links);
        $view->save();
        // Ensure that the theme system does not log any errors about missing theme
        // hooks when rendering the link.
        $logger = $this->prophesize(LoggerInterface::class);
        $logger->log(RfcLogLevel::WARNING, 'Theme hook %hook not found.', Argument::withEntry('%hook', 'link'))
            ->shouldNotBeCalled();
        $this->container
            ->get('logger.factory')
            ->get('theme')
            ->addLogger($logger->reveal());
    }
    
    /**
     * Tests the views area display_link handler.
     */
    public function testAreaDisplayLink() {
        $view = Views::getView('test_view');
        // Assert only path-based displays are available in the display link
        // settings form.
        $view->setDisplay('page_1');
        $this->assertFormOptions($view, 'display_link_1');
        $this->assertFormOptions($view, 'display_link_2');
        $view->setDisplay('page_2');
        $this->assertFormOptions($view, 'display_link_1');
        $this->assertFormOptions($view, 'display_link_2');
        $view->setDisplay('block_1');
        $this->assertFormOptions($view, 'display_link_1');
        $this->assertFormOptions($view, 'display_link_2');
        // Assert the links are rendered correctly for all displays.
        $this->assertRenderedDisplayLinks($view, 'page_1');
        $this->assertRenderedDisplayLinks($view, 'page_2');
        $this->assertRenderedDisplayLinks($view, 'block_1');
        // Assert some special request parameters are filtered from the display
        // links.
        $request_stack = new RequestStack();
        $request_stack->push(Request::create('page_1', 'GET', [
            'name' => 'John',
            'sort_by' => 'created',
            'sort_order' => 'ASC',
            'page' => 1,
            'keep' => 'keep',
            'keep_another' => 1,
            'view_name' => 1,
            'view_display_id' => 1,
            'view_args' => 1,
            'view_path' => 1,
            'view_dom_id' => 1,
            'pager_element' => 1,
            'view_base_path' => 1,
            AjaxResponseSubscriber::AJAX_REQUEST_PARAMETER => 1,
            FormBuilderInterface::AJAX_FORM_REQUEST => 1,
            MainContentViewSubscriber::WRAPPER_FORMAT => 1,
        ]));
        $this->container
            ->set('request_stack', $request_stack);
        $view->destroy();
        $view->setDisplay('page_1');
        $view->setCurrentPage(2);
        $this->executeView($view, [
            1,
        ]);
        $this->assertSame('<a href="/page_1/1?name=John&amp;sort_by=created&amp;sort_order=ASC&amp;keep=keep&amp;keep_another=1&amp;page=1" class="views-display-link views-display-link-page_1 is-active">Page 1</a>', $this->renderDisplayLink($view, 'display_link_1'));
        $this->assertSame('<a href="/page_2/1?name=John&amp;sort_by=created&amp;sort_order=ASC&amp;keep=keep&amp;keep_another=1&amp;page=1" class="views-display-link views-display-link-page_2">Page 2</a>', $this->renderDisplayLink($view, 'display_link_2'));
        // Assert the validation adds warning messages when a display link is added
        // to a display with different filter criteria, sort criteria, pager
        // settings or contextual filters. Since all options are added to the
        // default display there currently should be no warning messages.
        $this->assertNoWarningMessages($view);
        // Assert the message are shown when changing the filter criteria of page_1.
        $filters = [
            'name' => [
                'id' => 'name',
                'table' => 'views_test_data',
                'field' => 'name',
                'relationship' => 'none',
                'operator' => '=',
                'value' => '',
                'exposed' => TRUE,
                'expose' => [
                    'identifier' => 'name',
                    'label' => 'Name',
                ],
            ],
        ];
        $view->displayHandlers
            ->get('page_1')
            ->overrideOption('filters', $filters);
        $this->assertWarningMessages($view, [
            'filters',
        ]);
        // Assert no messages are added after the default display is changed with
        // the same options.
        $view->displayHandlers
            ->get('default')
            ->overrideOption('filters', $filters);
        $this->assertNoWarningMessages($view);
        // Assert the message are shown when changing the sort criteria of page_1.
        $sorts = [
            'created' => [
                'id' => 'created',
                'table' => 'views_test_data',
                'field' => 'created',
                'relationship' => 'none',
                'order' => 'DESC',
                'exposed' => TRUE,
            ],
        ];
        $view->displayHandlers
            ->get('page_1')
            ->overrideOption('sorts', $sorts);
        $this->assertWarningMessages($view, [
            'sorts',
        ]);
        // Assert no messages are added after the default display is changed with
        // the same options.
        $view->displayHandlers
            ->get('default')
            ->overrideOption('sorts', $sorts);
        $this->assertNoWarningMessages($view);
        // Assert the message are shown when changing the sort criteria of page_1.
        $pager = [
            'type' => 'full',
            'options' => [
                'items_per_page' => 10,
            ],
        ];
        $view->displayHandlers
            ->get('page_1')
            ->overrideOption('pager', $pager);
        $this->assertWarningMessages($view, [
            'pager',
        ]);
        // Assert no messages are added after the default display is changed with
        // the same options.
        $view->displayHandlers
            ->get('default')
            ->overrideOption('pager', $pager);
        $this->assertNoWarningMessages($view);
        // Assert the message are shown when changing the contextual filters of
        // page_1.
        $arguments = [
            'id' => [
                'id' => 'id',
                'table' => 'views_test_data',
                'field' => 'id',
                'relationship' => 'none',
            ],
        ];
        $view->displayHandlers
            ->get('page_1')
            ->overrideOption('arguments', $arguments);
        $this->assertWarningMessages($view, [
            'arguments',
        ]);
        // Assert no messages are added after the default display is changed with
        // the same options.
        $view->displayHandlers
            ->get('default')
            ->overrideOption('arguments', $arguments);
        $this->assertNoWarningMessages($view);
        // Assert an error is shown when the display ID is not set.
        $display_link = [
            'display_link_3' => [
                'id' => 'display_link_3',
                'table' => 'views',
                'field' => 'display_link',
                'display_id' => '',
                'label' => 'Empty',
                'plugin_id' => 'display_link',
            ],
        ];
        $view->displayHandlers
            ->get('page_1')
            ->overrideOption('header', $display_link);
        $view->destroy();
        $view->setDisplay('page_1');
        $errors = $view->validate();
        $this->assertCount(1, $errors);
        $this->assertCount(1, $errors['page_1']);
        $this->assertSame('<em class="placeholder">Page 1</em>: The link in the <em class="placeholder">header</em> area has no configured display.', $errors['page_1'][0]->__toString());
        // Assert an error is shown when linking to a display ID that doesn't exist.
        $display_link['display_link_3']['display_id'] = 'non-existent';
        $view->displayHandlers
            ->get('page_1')
            ->overrideOption('header', $display_link);
        $view->destroy();
        $view->setDisplay('page_1');
        $errors = $view->validate();
        $this->assertCount(1, $errors);
        $this->assertCount(1, $errors['page_1']);
        $this->assertSame('<em class="placeholder">Page 1</em>: The link in the <em class="placeholder">header</em> area points to the <em class="placeholder">non-existent</em> display which no longer exists.', $errors['page_1'][0]->__toString());
        // Assert an error is shown when linking to a display without a path.
        $display_link['display_link_3']['display_id'] = 'block_1';
        $view->displayHandlers
            ->get('page_1')
            ->overrideOption('header', $display_link);
        $view->destroy();
        $view->setDisplay('page_1');
        $errors = $view->validate();
        $this->assertCount(1, $errors);
        $this->assertCount(1, $errors['page_1']);
        $this->assertSame('<em class="placeholder">Page 1</em>: The link in the <em class="placeholder">header</em> area points to the <em class="placeholder">Block 1</em> display which does not have a path.', $errors['page_1'][0]->__toString());
    }
    
    /**
     * Assert the display options contains only path based displays.
     *
     * @param \Drupal\views\ViewExecutable $view
     *   The view to check.
     * @param string $display_link_id
     *   The display link ID to check the options for.
     *
     * @internal
     */
    protected function assertFormOptions(ViewExecutable $view, string $display_link_id) : void {
        $form = [];
        $form_state = new FormState();
        $view->display_handler
            ->getHandler('header', $display_link_id)
            ->buildOptionsForm($form, $form_state);
        $this->assertTrue(isset($form['display_id']['#options']['page_1']));
        $this->assertTrue(isset($form['display_id']['#options']['page_2']));
        $this->assertFalse(isset($form['display_id']['#options']['block_1']));
    }
    
    /**
     * Assert the display links are correctly rendered for a display.
     *
     * @param \Drupal\views\ViewExecutable $view
     *   The view to check.
     * @param string $display_id
     *   The display ID to check the links for.
     *
     * @internal
     */
    protected function assertRenderedDisplayLinks(ViewExecutable $view, string $display_id) : void {
        $page_1_active = $display_id === 'page_1' ? ' is-active' : '';
        $page_2_active = $display_id === 'page_2' ? ' is-active' : '';
        $view->destroy();
        $view->setDisplay($display_id);
        $this->executeView($view);
        $this->assertSame('<a href="/page_1" class="views-display-link views-display-link-page_1' . $page_1_active . '">Page 1</a>', $this->renderDisplayLink($view, 'display_link_1'));
        $this->assertSame('<a href="/page_2" class="views-display-link views-display-link-page_2' . $page_2_active . '">Page 2</a>', $this->renderDisplayLink($view, 'display_link_2'));
        // Assert the exposed filters, pager and contextual links are passed
        // correctly in the links.
        $view->destroy();
        $view->setDisplay($display_id);
        $view->setExposedInput([
            'name' => 'John',
            'sort_by' => 'created',
            'sort_order' => 'ASC',
        ]);
        $view->setCurrentPage(2);
        $this->executeView($view, [
            1,
        ]);
        $this->assertSame('<a href="/page_1/1?name=John&amp;sort_by=created&amp;sort_order=ASC&amp;page=1" class="views-display-link views-display-link-page_1' . $page_1_active . '">Page 1</a>', $this->renderDisplayLink($view, 'display_link_1'));
        $this->assertSame('<a href="/page_2/1?name=John&amp;sort_by=created&amp;sort_order=ASC&amp;page=1" class="views-display-link views-display-link-page_2' . $page_2_active . '">Page 2</a>', $this->renderDisplayLink($view, 'display_link_2'));
    }
    
    /**
     * Render a display link.
     *
     * @param \Drupal\views\ViewExecutable $view
     *   The view to render the link for.
     * @param string $display_link_id
     *   The display link ID to render.
     *
     * @return string
     *   The rendered display link.
     */
    protected function renderDisplayLink(ViewExecutable $view, $display_link_id) {
        
        /** @var \Drupal\Core\Render\RendererInterface $renderer */
        $renderer = $this->container
            ->get('renderer');
        $display_link = $view->display_handler
            ->getHandler('header', $display_link_id)
            ->render();
        return $renderer->renderRoot($display_link)
            ->__toString();
    }
    
    /**
     * Assert no warning messages are shown when all display are equal.
     *
     * @param \Drupal\views\ViewExecutable $view
     *   The view to check.
     *
     * @internal
     */
    protected function assertNoWarningMessages(ViewExecutable $view) : void {
        $messenger = $this->container
            ->get('messenger');
        $view->validate();
        $this->assertCount(0, $messenger->messagesByType(MessengerInterface::TYPE_WARNING));
    }
    
    /**
     * Assert the warning messages are shown after changing the page_1 display.
     *
     * @param \Drupal\views\ViewExecutable $view
     *   The view to check.
     * @param array $unequal_options
     *   An array of options that should be unequal.
     *
     * @throws \Exception
     *
     * @internal
     */
    protected function assertWarningMessages(ViewExecutable $view, array $unequal_options) : void {
        $messenger = $this->container
            ->get('messenger');
        // Create a list of options to check.
        // @see \Drupal\views\Plugin\views\area\DisplayLink::validate()
        $options = [
            'filters' => 'Filter criteria',
            'sorts' => 'Sort criteria',
            'pager' => 'Pager',
            'arguments' => 'Contextual filters',
        ];
        // Create a list of options to check.
        // @see \Drupal\views\Plugin\views\area\DisplayLink::validate()
        $unequal_options_text = implode(', ', array_intersect_key($options, array_flip($unequal_options)));
        $errors = $view->validate();
        $messages = $messenger->messagesByType(MessengerInterface::TYPE_WARNING);
        $this->assertCount(0, $errors);
        $this->assertCount(3, $messages);
        $this->assertSame('<em class="placeholder">Block 1</em>: The link in the <em class="placeholder">header</em> area points to the <em class="placeholder">Page 1</em> display which uses different settings than the <em class="placeholder">Block 1</em> display for: <em class="placeholder">' . $unequal_options_text . '</em>. To make sure users see the exact same result when clicking the link, please check that the settings are the same.', $messages[0]->__toString());
        $this->assertSame('<em class="placeholder">Page 1</em>: The link in the <em class="placeholder">header</em> area points to the <em class="placeholder">Page 2</em> display which uses different settings than the <em class="placeholder">Page 1</em> display for: <em class="placeholder">' . $unequal_options_text . '</em>. To make sure users see the exact same result when clicking the link, please check that the settings are the same.', $messages[1]->__toString());
        $this->assertSame('<em class="placeholder">Page 2</em>: The link in the <em class="placeholder">header</em> area points to the <em class="placeholder">Page 1</em> display which uses different settings than the <em class="placeholder">Page 2</em> display for: <em class="placeholder">' . $unequal_options_text . '</em>. To make sure users see the exact same result when clicking the link, please check that the settings are the same.', $messages[2]->__toString());
        $messenger->deleteAll();
        // If the default display is shown in the UI, warnings should be shown for
        // this display as well.
        $this->config('views.settings')
            ->set('ui.show.default_display', TRUE)
            ->save();
        $errors = $view->validate();
        $messages = $messenger->messagesByType(MessengerInterface::TYPE_WARNING);
        $this->assertCount(0, $errors);
        $this->assertCount(4, $messages);
        $this->assertSame('<em class="placeholder">Default</em>: The link in the <em class="placeholder">header</em> area points to the <em class="placeholder">Page 1</em> display which uses different settings than the <em class="placeholder">Default</em> display for: <em class="placeholder">' . $unequal_options_text . '</em>. To make sure users see the exact same result when clicking the link, please check that the settings are the same.', $messages[0]->__toString());
        $this->assertSame('<em class="placeholder">Block 1</em>: The link in the <em class="placeholder">header</em> area points to the <em class="placeholder">Page 1</em> display which uses different settings than the <em class="placeholder">Block 1</em> display for: <em class="placeholder">' . $unequal_options_text . '</em>. To make sure users see the exact same result when clicking the link, please check that the settings are the same.', $messages[1]->__toString());
        $this->assertSame('<em class="placeholder">Page 1</em>: The link in the <em class="placeholder">header</em> area points to the <em class="placeholder">Page 2</em> display which uses different settings than the <em class="placeholder">Page 1</em> display for: <em class="placeholder">' . $unequal_options_text . '</em>. To make sure users see the exact same result when clicking the link, please check that the settings are the same.', $messages[2]->__toString());
        $this->assertSame('<em class="placeholder">Page 2</em>: The link in the <em class="placeholder">header</em> area points to the <em class="placeholder">Page 1</em> display which uses different settings than the <em class="placeholder">Page 2</em> display for: <em class="placeholder">' . $unequal_options_text . '</em>. To make sure users see the exact same result when clicking the link, please check that the settings are the same.', $messages[3]->__toString());
        $messenger->deleteAll();
        $this->config('views.settings')
            ->set('ui.show.default_display', FALSE)
            ->save();
    }

}