class FileManagedFileElementTest

class FileManagedFileElementTest extends FileFieldTestBase {
    
    /**
     * {@inheritdoc}
     */
    protected $defaultTheme = 'stark';
    
    /**
     * Tests the managed_file element type.
     */
    public function testManagedFile() : void {
        // Check that $element['#size'] is passed to the child upload element.
        $this->drupalGet('file/test');
        $field = $this->assertSession()
            ->fieldExists("files[nested_file]");
        $this->assertEquals(13, $field->getAttribute('size'));
        // Perform the tests with all permutations of $form['#tree'],
        // $element['#extended'], and $element['#multiple'].
        $test_file = $this->getTestFile('text');
        foreach ([
            0,
            1,
        ] as $tree) {
            foreach ([
                0,
                1,
            ] as $extended) {
                foreach ([
                    0,
                    1,
                ] as $multiple) {
                    $path = 'file/test/' . $tree . '/' . $extended . '/' . $multiple;
                    $input_base_name = $tree ? 'nested_file' : 'file';
                    $file_field_name = $multiple ? 'files[' . $input_base_name . '][]' : 'files[' . $input_base_name . ']';
                    $this->drupalGet($path);
                    // Ensure the aria-describedby relationship works as expected.
                    $input_id = Html::getId('edit_' . $input_base_name);
                    $this->assertSession()
                        ->elementExists('css', '#' . $input_id . '--description');
                    $this->assertSession()
                        ->elementExists('css', '[aria-describedby="' . $input_id . '--description"]');
                    // Submit without a file.
                    $this->submitForm([], 'Save');
                    $this->assertSession()
                        ->pageTextContains("The file ids are .");
                    // Submit with a file, but with an invalid form token. Ensure the file
                    // was not saved.
                    $last_fid_prior = $this->getLastFileId();
                    $this->drupalGet($path);
                    $form_token_field = $this->assertSession()
                        ->hiddenFieldExists('form_token');
                    $form_token_field->setValue('invalid token');
                    $edit = [
                        $file_field_name => \Drupal::service('file_system')->realpath($test_file->getFileUri()),
                    ];
                    $this->submitForm($edit, 'Save');
                    $this->assertSession()
                        ->pageTextContains('The form has become outdated.');
                    $last_fid = $this->getLastFileId();
                    $this->assertEquals($last_fid_prior, $last_fid, 'File was not saved when uploaded with an invalid form token.');
                    // Submit a new file, without using the Upload button.
                    $last_fid_prior = $this->getLastFileId();
                    $edit = [
                        $file_field_name => \Drupal::service('file_system')->realpath($test_file->getFileUri()),
                    ];
                    $this->drupalGet($path);
                    $this->submitForm($edit, 'Save');
                    $last_fid = $this->getLastFileId();
                    $this->assertGreaterThan($last_fid_prior, $last_fid, 'New file got saved.');
                    $this->assertSession()
                        ->pageTextContains("The file ids are {$last_fid}.");
                    // Submit no new input, but with a default file.
                    $this->drupalGet($path . '/' . $last_fid);
                    $this->submitForm([], 'Save');
                    $this->assertSession()
                        ->pageTextContains("The file ids are {$last_fid}.");
                    // Upload, then Submit.
                    $last_fid_prior = $this->getLastFileId();
                    $this->drupalGet($path);
                    $edit = [
                        $file_field_name => \Drupal::service('file_system')->realpath($test_file->getFileUri()),
                    ];
                    $this->submitForm($edit, 'Upload');
                    $last_fid = $this->getLastFileId();
                    $this->assertGreaterThan($last_fid_prior, $last_fid, 'New file got uploaded.');
                    $this->submitForm([], 'Save');
                    $this->assertSession()
                        ->pageTextContains("The file ids are {$last_fid}.");
                    // Remove, then Submit.
                    $remove_button_title = $multiple ? 'Remove selected' : 'Remove';
                    $remove_edit = [];
                    if ($multiple) {
                        $selected_checkbox = ($tree ? 'nested[file]' : 'file') . '[file_' . $last_fid . '][selected]';
                        $remove_edit = [
                            $selected_checkbox => '1',
                        ];
                    }
                    $this->drupalGet($path . '/' . $last_fid);
                    $this->submitForm($remove_edit, $remove_button_title);
                    $this->submitForm([], 'Save');
                    $this->assertSession()
                        ->pageTextContains("The file ids are .");
                    // Upload, then Remove, then Submit.
                    $this->drupalGet($path);
                    $edit = [
                        $file_field_name => \Drupal::service('file_system')->realpath($test_file->getFileUri()),
                    ];
                    $this->submitForm($edit, 'Upload');
                    $remove_edit = [];
                    if ($multiple) {
                        $selected_checkbox = ($tree ? 'nested[file]' : 'file') . '[file_' . $this->getLastFileId() . '][selected]';
                        $remove_edit = [
                            $selected_checkbox => '1',
                        ];
                    }
                    $this->submitForm($remove_edit, $remove_button_title);
                    $this->submitForm([], 'Save');
                    $this->assertSession()
                        ->pageTextContains("The file ids are .");
                }
            }
        }
        // The multiple file upload has additional conditions that need checking.
        $path = 'file/test/1/1/1';
        $edit = [
            'files[nested_file][]' => \Drupal::service('file_system')->realpath($test_file->getFileUri()),
        ];
        $fid_list = [];
        $this->drupalGet($path);
        // Add a single file to the upload field.
        $this->submitForm($edit, 'Upload');
        $fid_list[] = $this->getLastFileId();
        $this->assertSession()
            ->fieldExists("nested[file][file_{$fid_list[0]}][selected]");
        // Add another file to the same upload field.
        $this->submitForm($edit, 'Upload');
        $fid_list[] = $this->getLastFileId();
        $this->assertSession()
            ->fieldExists("nested[file][file_{$fid_list[1]}][selected]");
        // Save the entire form.
        $this->submitForm([], 'Save');
        // Check that two files are saved into a single multiple file element.
        $this->assertSession()
            ->pageTextContains("The file ids are " . implode(',', $fid_list) . ".");
        // Delete only the first file.
        $edit = [
            'nested[file][file_' . $fid_list[0] . '][selected]' => '1',
        ];
        $this->drupalGet($path . '/' . implode(',', $fid_list));
        $this->submitForm($edit, 'Remove selected');
        // Check that the first file has been deleted but not the second.
        $this->assertSession()
            ->fieldNotExists("nested[file][file_{$fid_list[0]}][selected]");
        $this->assertSession()
            ->fieldExists("nested[file][file_{$fid_list[1]}][selected]");
    }
    
    /**
     * Ensure that warning is shown if file on the field has been removed.
     */
    public function testManagedFileRemoved() : void {
        $this->drupalGet('file/test/1/0/1');
        $test_file = $this->getTestFile('text');
        $file_field_name = 'files[nested_file][]';
        $edit = [
            $file_field_name => \Drupal::service('file_system')->realpath($test_file->getFileUri()),
        ];
        $this->submitForm($edit, 'Upload');
        $fid = $this->getLastFileId();
        $file = \Drupal::entityTypeManager()->getStorage('file')
            ->load($fid);
        $file->delete();
        $this->submitForm($edit, 'Upload');
        // We expect the title 'Managed <em>file & butter</em>' which got escaped
        // via a t() call before.
        $this->assertSession()
            ->responseContains('The file referenced by the Managed <em>file &amp; butter</em> field does not exist.');
    }
    
    /**
     * Tests file names have leading . removed.
     */
    public function testFileNameTrim() : void {
        file_put_contents('public://.leading-period.txt', $this->randomString(32));
        $last_fid_prior = $this->getLastFileId();
        $this->drupalGet('file/test/0/0/0');
        $this->submitForm([
            'files[file]' => \Drupal::service('file_system')->realpath('public://.leading-period.txt'),
        ], 'Save');
        $next_fid = $this->getLastFileId();
        $this->assertGreaterThan($last_fid_prior, $next_fid);
        $file = File::load($next_fid);
        $this->assertEquals('leading-period.txt', $file->getFilename());
    }
    
    /**
     * Ensure a file entity can be saved when the file does not exist on disk.
     */
    public function testFileRemovedFromDisk() : void {
        $this->drupalGet('file/test/1/0/1');
        $test_file = $this->getTestFile('text');
        $file_field_name = 'files[nested_file][]';
        $edit = [
            $file_field_name => \Drupal::service('file_system')->realpath($test_file->getFileUri()),
        ];
        $this->submitForm($edit, 'Upload');
        $this->submitForm([], 'Save');
        $fid = $this->getLastFileId();
        
        /** @var \Drupal\file\FileInterface $file */
        $file = $this->container
            ->get('entity_type.manager')
            ->getStorage('file')
            ->load($fid);
        $file->setPermanent();
        $file->save();
        $this->assertTrue(\Drupal::service('file_system')->delete($file->getFileUri()));
        $file->save();
        $this->assertTrue($file->isPermanent());
        $file->delete();
    }
    
    /**
     * Verify that unused permanent files can be used.
     */
    public function testUnusedPermanentFileValidation() : void {
        // Create a permanent file without usages.
        $file = $this->getTestFile('image');
        $file->setPermanent();
        $file->save();
        // By default, unused files are no longer marked temporary, and it must be
        // allowed to reference an unused file.
        $this->drupalGet('file/test/1/0/1/' . $file->id());
        $this->submitForm([], 'Save');
        $this->assertSession()
            ->pageTextNotContains('The file used in the Managed file & butter field may not be referenced.');
        $this->assertSession()
            ->pageTextContains('The file ids are ' . $file->id());
        // Enable marking unused files as temporary, unused permanent files must not
        // be referenced now.
        $this->config('file.settings')
            ->set('make_unused_managed_files_temporary', TRUE)
            ->save();
        $this->drupalGet('file/test/1/0/1/' . $file->id());
        $this->submitForm([], 'Save');
        $this->assertSession()
            ->pageTextContains('The file used in the Managed file & butter field may not be referenced.');
        $this->assertSession()
            ->pageTextNotContains('The file ids are ' . $file->id());
        // Make the file temporary, now using it is allowed.
        $file->setTemporary();
        $file->save();
        $this->drupalGet('file/test/1/0/1/' . $file->id());
        $this->submitForm([], 'Save');
        $this->assertSession()
            ->pageTextNotContains('The file used in the Managed file & butter field may not be referenced.');
        $this->assertSession()
            ->pageTextContains('The file ids are ' . $file->id());
        // Make the file permanent again and add a usage from itself, referencing is
        // still allowed.
        $file->setPermanent();
        $file->save();
        
        /** @var \Drupal\file\FileUsage\FileUsageInterface $file_usage */
        $file_usage = \Drupal::service('file.usage');
        $file_usage->add($file, 'file', 'file', $file->id());
        $this->drupalGet('file/test/1/0/1/' . $file->id());
        $this->submitForm([], 'Save');
        $this->assertSession()
            ->pageTextNotContains('The file used in the Managed file & butter field may not be referenced.');
        $this->assertSession()
            ->pageTextContains('The file ids are ' . $file->id());
    }

}