class FilterAdminTest

class FilterAdminTest extends BrowserTestBase {
    
    /**
     * {@inheritdoc}
     */
    protected static $modules = [
        'block',
        'filter',
        'node',
        'filter_test_plugin',
        'dblog',
    ];
    
    /**
     * {@inheritdoc}
     */
    protected $defaultTheme = 'stark';
    
    /**
     * A user with administration permissions.
     *
     * @var \Drupal\user\UserInterface
     */
    protected $adminUser;
    
    /**
     * A user with permissions to create pages.
     *
     * @var \Drupal\user\UserInterface
     */
    protected $webUser;
    
    /**
     * {@inheritdoc}
     */
    protected function setUp() : void {
        parent::setUp();
        $this->drupalCreateContentType([
            'type' => 'page',
            'name' => 'Basic page',
        ]);
        // Set up the filter formats used by this test.
        $basic_html_format = FilterFormat::create([
            'format' => 'basic_html',
            'name' => 'Basic HTML',
            'filters' => [
                'filter_html' => [
                    'status' => 1,
                    'settings' => [
                        'allowed_html' => '<p> <br> <strong> <a> <em>',
                    ],
                ],
            ],
        ]);
        $basic_html_format->save();
        $restricted_html_format = FilterFormat::create([
            'format' => 'restricted_html',
            'name' => 'Restricted HTML',
            'filters' => [
                'filter_html' => [
                    'status' => TRUE,
                    'weight' => -10,
                    'settings' => [
                        'allowed_html' => '<p> <br> <strong> <a> <em> <h4>',
                    ],
                ],
                'filter_autop' => [
                    'status' => TRUE,
                    'weight' => 0,
                ],
                'filter_url' => [
                    'status' => TRUE,
                    'weight' => 0,
                ],
                'filter_htmlcorrector' => [
                    'status' => TRUE,
                    'weight' => 10,
                ],
            ],
        ]);
        $restricted_html_format->save();
        $full_html_format = FilterFormat::create([
            'format' => 'full_html',
            'name' => 'Full HTML',
            'weight' => 1,
            'filters' => [],
        ]);
        $full_html_format->save();
        $this->adminUser = $this->drupalCreateUser([
            'administer filters',
            $basic_html_format->getPermissionName(),
            $restricted_html_format->getPermissionName(),
            $full_html_format->getPermissionName(),
            'access site reports',
        ]);
        $this->webUser = $this->drupalCreateUser([
            'create page content',
            'edit own page content',
        ]);
        user_role_grant_permissions('authenticated', [
            $basic_html_format->getPermissionName(),
        ]);
        user_role_grant_permissions('anonymous', [
            $restricted_html_format->getPermissionName(),
        ]);
        $this->drupalLogin($this->adminUser);
        $this->drupalPlaceBlock('local_actions_block');
    }
    
    /**
     * Tests the format administration functionality.
     */
    public function testFormatAdmin() {
        // Add text format.
        $this->drupalGet('admin/config/content/formats');
        $this->clickLink('Add text format');
        $format_id = mb_strtolower($this->randomMachineName());
        $name = $this->randomMachineName();
        $edit = [
            'format' => $format_id,
            'name' => $name,
        ];
        $this->submitForm($edit, 'Save configuration');
        // Verify default weight of the text format.
        $this->drupalGet('admin/config/content/formats');
        $this->assertSession()
            ->fieldValueEquals("formats[{$format_id}][weight]", 0);
        // Change the weight of the text format.
        $edit = [
            "formats[{$format_id}][weight]" => 5,
        ];
        $this->drupalGet('admin/config/content/formats');
        $this->submitForm($edit, 'Save');
        $this->assertSession()
            ->fieldValueEquals("formats[{$format_id}][weight]", 5);
        // Edit text format.
        $this->drupalGet('admin/config/content/formats');
        $destination = Url::fromRoute('filter.admin_overview')->toString();
        $edit_href = Url::fromRoute('entity.filter_format.edit_form', [
            'filter_format' => $format_id,
        ], [
            'query' => [
                'destination' => $destination,
            ],
        ])->toString();
        $this->assertSession()
            ->linkByHrefExists($edit_href);
        $this->drupalGet('admin/config/content/formats/manage/' . $format_id);
        $this->submitForm([], 'Save configuration');
        // Verify that the custom weight of the text format has been retained.
        $this->drupalGet('admin/config/content/formats');
        $this->assertSession()
            ->fieldValueEquals("formats[{$format_id}][weight]", 5);
        // Disable text format.
        $this->assertSession()
            ->linkByHrefExists('admin/config/content/formats/manage/' . $format_id . '/disable');
        $this->drupalGet('admin/config/content/formats/manage/' . $format_id . '/disable');
        $this->submitForm([], 'Disable');
        // Verify that disabled text format no longer exists.
        $this->drupalGet('admin/config/content/formats/manage/' . $format_id);
        $this->assertSession()
            ->statusCodeEquals(404);
        // Attempt to create a format of the same machine name as the disabled
        // format but with a different human readable name.
        $edit = [
            'format' => $format_id,
            'name' => 'New format',
        ];
        $this->drupalGet('admin/config/content/formats/add');
        $this->submitForm($edit, 'Save configuration');
        $this->assertSession()
            ->statusMessageContains('The machine-readable name is already in use. It must be unique.', 'error');
        // Attempt to create a format of the same human readable name as the
        // disabled format but with a different machine name.
        $edit = [
            'format' => 'new_format',
            'name' => $name,
        ];
        $this->drupalGet('admin/config/content/formats/add');
        $this->submitForm($edit, 'Save configuration');
        $this->assertSession()
            ->statusMessageContains("Text format names must be unique. A format named {$name} already exists.", 'error');
    }
    
    /**
     * Tests filter administration functionality.
     */
    public function testFilterAdmin() {
        $first_filter = 'filter_autop';
        $second_filter = 'filter_url';
        $basic = 'basic_html';
        $restricted = 'restricted_html';
        $full = 'full_html';
        $plain = 'plain_text';
        // Check that the fallback format exists and cannot be disabled.
        $this->assertSame($plain, filter_fallback_format(), 'The fallback format is set to plain text.');
        $this->drupalGet('admin/config/content/formats');
        $this->assertSession()
            ->responseNotContains('admin/config/content/formats/manage/' . $plain . '/disable');
        $this->drupalGet('admin/config/content/formats/manage/' . $plain . '/disable');
        $this->assertSession()
            ->statusCodeEquals(403);
        // Verify access permissions to Full HTML format.
        $full_format = FilterFormat::load($full);
        $this->assertTrue($full_format->access('use', $this->adminUser), 'Admin user may use Full HTML.');
        $this->assertFalse($full_format->access('use', $this->webUser), 'Web user may not use Full HTML.');
        // Add an additional tag and extra spaces and returns.
        $edit = [];
        $edit['filters[filter_html][settings][allowed_html]'] = "<a>   <em> <strong> <cite> <code> <ul> <ol> <li> <dl> <dt> <dd>\r\n<quote>";
        $this->drupalGet('admin/config/content/formats/manage/' . $restricted);
        $this->submitForm($edit, 'Save configuration');
        $this->assertSession()
            ->addressEquals('admin/config/content/formats/manage/' . $restricted);
        $this->drupalGet('admin/config/content/formats/manage/' . $restricted);
        // Check that the allowed HTML tag was added and the string reformatted.
        $this->assertSession()
            ->fieldValueEquals('filters[filter_html][settings][allowed_html]', "<a> <em> <strong> <cite> <code> <ul> <ol> <li> <dl> <dt> <dd> <quote>");
        $this->assertSession()
            ->elementExists('xpath', "//select[@name='filters[" . $first_filter . "][weight]']/following::select[@name='filters[" . $second_filter . "][weight]']");
        // Reorder filters.
        $edit = [];
        $edit['filters[' . $second_filter . '][weight]'] = 1;
        $edit['filters[' . $first_filter . '][weight]'] = 2;
        $this->submitForm($edit, 'Save configuration');
        $this->assertSession()
            ->addressEquals('admin/config/content/formats/manage/' . $restricted);
        $this->drupalGet('admin/config/content/formats/manage/' . $restricted);
        $this->assertSession()
            ->fieldValueEquals('filters[' . $second_filter . '][weight]', 1);
        $this->assertSession()
            ->fieldValueEquals('filters[' . $first_filter . '][weight]', 2);
        $this->assertSession()
            ->elementExists('xpath', "//select[@name='filters[" . $second_filter . "][weight]']/following::select[@name='filters[" . $first_filter . "][weight]']");
        $filter_format = FilterFormat::load($restricted);
        foreach ($filter_format->filters() as $filter_name => $filter) {
            if ($filter_name == $second_filter || $filter_name == $first_filter) {
                $filters[] = $filter_name;
            }
        }
        // Ensure that the second filter is now before the first filter.
        $this->assertEquals($filter_format->filters($second_filter)->weight + 1, $filter_format->filters($first_filter)->weight, 'Order confirmed in configuration.');
        // Add format.
        $edit = [];
        $edit['format'] = mb_strtolower($this->randomMachineName());
        $edit['name'] = $this->randomMachineName();
        $edit['roles[' . RoleInterface::AUTHENTICATED_ID . ']'] = 1;
        $edit['filters[' . $second_filter . '][status]'] = TRUE;
        $edit['filters[' . $first_filter . '][status]'] = TRUE;
        $this->drupalGet('admin/config/content/formats/add');
        $this->submitForm($edit, 'Save configuration');
        $this->assertSession()
            ->addressEquals('admin/config/content/formats');
        $this->assertSession()
            ->statusMessageContains("Added text format {$edit['name']}.", 'status');
        filter_formats_reset();
        $format = FilterFormat::load($edit['format']);
        $this->assertNotNull($format, 'Format found in database.');
        $this->drupalGet('admin/config/content/formats/manage/' . $format->id());
        $this->assertSession()
            ->checkboxChecked('roles[' . RoleInterface::AUTHENTICATED_ID . ']');
        $this->assertSession()
            ->checkboxChecked('filters[' . $second_filter . '][status]');
        $this->assertSession()
            ->checkboxChecked('filters[' . $first_filter . '][status]');
        
        /** @var \Drupal\user\Entity\Role $role */
        \Drupal::entityTypeManager()->getStorage('user_role')
            ->resetCache([
            RoleInterface::AUTHENTICATED_ID,
        ]);
        $role = Role::load(RoleInterface::AUTHENTICATED_ID);
        $this->assertTrue($role->hasPermission($format->getPermissionName()), 'The authenticated role has permission to use the filter.');
        // Disable new filter.
        $this->drupalGet('admin/config/content/formats/manage/' . $format->id() . '/disable');
        $this->submitForm([], 'Disable');
        $this->assertSession()
            ->addressEquals('admin/config/content/formats');
        $this->assertSession()
            ->statusMessageContains("Disabled text format {$edit['name']}.", 'status');
        \Drupal::entityTypeManager()->getStorage('user_role')
            ->resetCache([
            RoleInterface::AUTHENTICATED_ID,
        ]);
        $role = Role::load(RoleInterface::AUTHENTICATED_ID);
        $this->assertFalse($role->hasPermission($format->getPermissionName()), 'The filter permission has been removed from the authenticated role');
        // Allow authenticated users on full HTML.
        $format = FilterFormat::load($full);
        $edit = [];
        $edit['roles[' . RoleInterface::ANONYMOUS_ID . ']'] = 0;
        $edit['roles[' . RoleInterface::AUTHENTICATED_ID . ']'] = 1;
        $this->drupalGet('admin/config/content/formats/manage/' . $full);
        $this->submitForm($edit, 'Save configuration');
        $this->assertSession()
            ->addressEquals('admin/config/content/formats/manage/' . $full);
        $this->assertSession()
            ->statusMessageContains("The text format {$format->label()} has been updated.", 'status');
        // Switch user.
        $this->drupalLogin($this->webUser);
        $this->drupalGet('node/add/page');
        $this->assertSession()
            ->responseContains('<option value="' . $full . '">Full HTML</option>');
        // Use basic HTML and see if it removes tags that are not allowed.
        $body = '<em>' . $this->randomMachineName() . '</em>';
        $extra_text = 'text';
        $text = $body . '<random>' . $extra_text . '</random>';
        $edit = [];
        $edit['title[0][value]'] = $this->randomMachineName();
        $edit['body[0][value]'] = $text;
        $edit['body[0][format]'] = $basic;
        $this->drupalGet('node/add/page');
        $this->submitForm($edit, 'Save');
        $this->assertSession()
            ->statusMessageContains('Basic page ' . $edit['title[0][value]'] . ' has been created.', 'status');
        // Verify that the creation message contains a link to a node.
        $this->assertSession()
            ->elementExists('xpath', '//div[@aria-label="Status message"]//a[contains(@href, "node/")]');
        $node = $this->drupalGetNodeByTitle($edit['title[0][value]']);
        $this->assertNotEmpty($node, 'Node found in database.');
        $this->drupalGet('node/' . $node->id());
        // Check that filter removed invalid tag.
        $this->assertSession()
            ->responseContains($body . $extra_text);
        // Use plain text and see if it escapes all tags, whether allowed or not.
        // In order to test plain text, we have to enable the hidden variable for
        // "show_fallback_format", which displays plain text in the format list.
        $this->config('filter.settings')
            ->set('always_show_fallback_choice', TRUE)
            ->save();
        $edit = [];
        $edit['body[0][format]'] = $plain;
        $this->drupalGet('node/' . $node->id() . '/edit');
        $this->submitForm($edit, 'Save');
        $this->drupalGet('node/' . $node->id());
        $this->assertSession()
            ->assertEscaped($text);
        $this->config('filter.settings')
            ->set('always_show_fallback_choice', FALSE)
            ->save();
        // Switch user.
        $this->drupalLogin($this->adminUser);
        // Clean up.
        // Allowed tags.
        $edit = [];
        $edit['filters[filter_html][settings][allowed_html]'] = '<a> <em> <strong> <cite> <code> <ul> <ol> <li> <dl> <dt> <dd>';
        $this->drupalGet('admin/config/content/formats/manage/' . $basic);
        $this->submitForm($edit, 'Save configuration');
        $this->assertSession()
            ->addressEquals('admin/config/content/formats/manage/' . $basic);
        $this->drupalGet('admin/config/content/formats/manage/' . $basic);
        $this->assertSession()
            ->fieldValueEquals('filters[filter_html][settings][allowed_html]', $edit['filters[filter_html][settings][allowed_html]']);
        // Full HTML.
        $edit = [];
        $edit['roles[' . RoleInterface::AUTHENTICATED_ID . ']'] = FALSE;
        $this->drupalGet('admin/config/content/formats/manage/' . $full);
        $this->submitForm($edit, 'Save configuration');
        $this->assertSession()
            ->addressEquals('admin/config/content/formats/manage/' . $full);
        $this->assertSession()
            ->statusMessageContains("The text format {$format->label()} has been updated.", 'status');
        $this->drupalGet('admin/config/content/formats/manage/' . $full);
        $this->assertSession()
            ->fieldValueEquals('roles[' . RoleInterface::AUTHENTICATED_ID . ']', $edit['roles[' . RoleInterface::AUTHENTICATED_ID . ']']);
        // Filter order.
        $edit = [];
        $edit['filters[' . $second_filter . '][weight]'] = 2;
        $edit['filters[' . $first_filter . '][weight]'] = 1;
        $this->drupalGet('admin/config/content/formats/manage/' . $basic);
        $this->submitForm($edit, 'Save configuration');
        $this->assertSession()
            ->addressEquals('admin/config/content/formats/manage/' . $basic);
        $this->drupalGet('admin/config/content/formats/manage/' . $basic);
        $this->assertSession()
            ->fieldValueEquals('filters[' . $second_filter . '][weight]', $edit['filters[' . $second_filter . '][weight]']);
        $this->assertSession()
            ->fieldValueEquals('filters[' . $first_filter . '][weight]', $edit['filters[' . $first_filter . '][weight]']);
    }
    
    /**
     * Tests the URL filter settings form is properly validated.
     */
    public function testUrlFilterAdmin() {
        // The form does not save with an invalid filter URL length.
        $edit = [
            'filters[filter_url][settings][filter_url_length]' => $this->randomMachineName(4),
        ];
        $this->drupalGet('admin/config/content/formats/manage/basic_html');
        $this->submitForm($edit, 'Save configuration');
        $this->assertSession()
            ->statusMessageNotContains('The text format Basic HTML has been updated.');
    }
    
    /**
     * Tests whether filter tips page is not HTML escaped.
     */
    public function testFilterTipHtmlEscape() {
        $this->drupalLogin($this->adminUser);
        global $base_url;
        $site_name_with_markup = 'Filter test <script>alert(\'here\');</script> site name';
        $this->config('system.site')
            ->set('name', $site_name_with_markup)
            ->save();
        // It is not possible to test the whole filter tip page.
        // Therefore we test only some parts.
        $link = '<a href="' . $base_url . '">' . Html::escape($site_name_with_markup) . '</a>';
        $ampersand = '&amp;';
        $link_as_code = '<code>' . Html::escape($link) . '</code>';
        $ampersand_as_code = '<code>' . Html::escape($ampersand) . '</code>';
        $this->drupalGet('filter/tips');
        $this->assertSession()
            ->responseContains('<td class="type">' . $link_as_code . '</td>');
        $this->assertSession()
            ->responseContains('<td class="get">' . $link . '</td>');
        $this->assertSession()
            ->responseContains('<td class="type">' . $ampersand_as_code . '</td>');
        $this->assertSession()
            ->responseContains('<td class="get">' . $ampersand . '</td>');
    }
    
    /**
     * Tests whether a field using a disabled format is rendered.
     */
    public function testDisabledFormat() {
        // Create a node type and add a standard body field.
        $node_type = NodeType::create([
            'type' => mb_strtolower($this->randomMachineName()),
        ]);
        $node_type->save();
        node_add_body_field($node_type, $this->randomString());
        // Create a text format with a filter that returns a static string.
        $format = FilterFormat::create([
            'name' => $this->randomString(),
            'format' => $format_id = mb_strtolower($this->randomMachineName()),
        ]);
        $format->setFilterConfig('filter_static_text', [
            'status' => TRUE,
        ]);
        $format->save();
        // Create a new node of the new node type.
        $node = Node::create([
            'type' => $node_type->id(),
            'title' => $this->randomString(),
        ]);
        $body_value = $this->randomString();
        $node->body->value = $body_value;
        $node->body->format = $format_id;
        $node->save();
        // The format is used and we should see the static text instead of the body
        // value.
        $this->drupalGet($node->toUrl());
        $this->assertSession()
            ->pageTextContains('filtered text');
        // Disable the format.
        $format->disable()
            ->save();
        $this->drupalGet($node->toUrl());
        // The format is not used anymore.
        $this->assertSession()
            ->pageTextNotContains('filtered text');
        // The text is not displayed unfiltered or escaped.
        $this->assertSession()
            ->responseNotContains($body_value);
        $this->assertSession()
            ->assertNoEscaped($body_value);
        // Visit the dblog report page.
        $this->drupalLogin($this->adminUser);
        $this->drupalGet('admin/reports/dblog');
        // The correct message has been logged.
        $this->assertSession()
            ->pageTextContains(sprintf('Disabled text format: %s.', $format_id));
        // Programmatically change the text format to something random so we trigger
        // the missing text format message.
        $format_id = $this->randomMachineName();
        $node->body->format = $format_id;
        $node->save();
        $this->drupalGet($node->toUrl());
        // The text is not displayed unfiltered or escaped.
        $this->assertSession()
            ->responseNotContains($body_value);
        $this->assertSession()
            ->assertNoEscaped($body_value);
        // Visit the dblog report page.
        $this->drupalGet('admin/reports/dblog');
        // The missing text format message has been logged.
        $this->assertSession()
            ->pageTextContains(sprintf('Missing text format: %s.', $format_id));
    }

}