class FileListingTest

class FileListingTest extends FileFieldTestBase {
    
    /**
     * Modules to enable.
     *
     * @var array
     */
    public static $modules = [
        'views',
        'file',
        'image',
        'entity_test',
    ];
    
    /**
     * {@inheritdoc}
     */
    protected $defaultTheme = 'classy';
    
    /**
     * An authenticated user.
     *
     * @var \Drupal\user\UserInterface
     */
    protected $baseUser;
    protected function setUp() {
        parent::setUp();
        // This test expects unused managed files to be marked as a temporary file.
        $this->config('file.settings')
            ->set('make_unused_managed_files_temporary', TRUE)
            ->save();
        $this->adminUser = $this->drupalCreateUser([
            'access files overview',
            'bypass node access',
        ]);
        $this->baseUser = $this->drupalCreateUser();
        $this->createFileField('file', 'node', 'article', [], [
            'file_extensions' => 'txt png',
        ]);
    }
    
    /**
     * Calculates total count of usages for a file.
     *
     * @param $usage array
     *   Array of file usage information as returned from file_usage subsystem.
     *
     * @return int
     *   Total usage count.
     */
    protected function sumUsages($usage) {
        $count = 0;
        foreach ($usage as $module) {
            foreach ($module as $entity_type) {
                foreach ($entity_type as $entity) {
                    $count += $entity;
                }
            }
        }
        return $count;
    }
    
    /**
     * Tests file overview with different user permissions.
     */
    public function testFileListingPages() {
        $file_usage = $this->container
            ->get('file.usage');
        // Users without sufficient permissions should not see file listing.
        $this->drupalLogin($this->baseUser);
        $this->drupalGet('admin/content/files');
        $this->assertSession()
            ->statusCodeEquals(403);
        // Log in with user with right permissions and test listing.
        $this->drupalLogin($this->adminUser);
        for ($i = 0; $i < 5; $i++) {
            $nodes[] = $this->drupalCreateNode([
                'type' => 'article',
            ]);
        }
        $this->drupalGet('admin/content/files');
        $this->assertSession()
            ->statusCodeEquals(200);
        $this->assertText('No files available.');
        $this->drupalGet('admin/content/files');
        $this->assertSession()
            ->statusCodeEquals(200);
        // Create a file with no usage.
        $file = $this->createFile();
        $this->drupalGet('admin/content/files/usage/' . $file->id());
        $this->assertSession()
            ->statusCodeEquals(200);
        $this->assertTitle('File usage information for ' . $file->getFilename() . ' | Drupal');
        foreach ($nodes as &$node) {
            $this->drupalGet('node/' . $node->id() . '/edit');
            $file = $this->getTestFile('image');
            $edit = [
                'files[file_0]' => \Drupal::service('file_system')->realpath($file->getFileUri()),
            ];
            $this->drupalPostForm(NULL, $edit, t('Save'));
            $node = Node::load($node->id());
        }
        $this->drupalGet('admin/content/files');
        foreach ($nodes as $node) {
            $file = File::load($node->file->target_id);
            $this->assertText($file->getFilename());
            $this->assertLinkByHref(file_create_url($file->getFileUri()));
            $this->assertLinkByHref('admin/content/files/usage/' . $file->id());
        }
        $this->assertSession()
            ->elementTextNotContains('css', 'table.views-table', 'Temporary');
        $this->assertSession()
            ->elementTextContains('css', 'table.views-table', 'Permanent');
        // Use one file two times and check usage information.
        $orphaned_file = $nodes[1]->file->target_id;
        $used_file = $nodes[0]->file->target_id;
        $nodes[1]->file->target_id = $used_file;
        $nodes[1]->save();
        $this->drupalGet('admin/content/files');
        $file = File::load($orphaned_file);
        $usage = $this->sumUsages($file_usage->listUsage($file));
        $this->assertRaw('admin/content/files/usage/' . $file->id() . '">' . $usage);
        $file = File::load($used_file);
        $usage = $this->sumUsages($file_usage->listUsage($file));
        $this->assertRaw('admin/content/files/usage/' . $file->id() . '">' . $usage);
        $result = $this->xpath("//td[contains(@class, 'views-field-status') and contains(text(), :value)]", [
            ':value' => 'Temporary',
        ]);
        $this->assertCount(1, $result, 'Unused file marked as temporary.');
        // Test file usage page.
        foreach ($nodes as $node) {
            $file = File::load($node->file->target_id);
            $usage = $file_usage->listUsage($file);
            $this->drupalGet('admin/content/files/usage/' . $file->id());
            $this->assertSession()
                ->statusCodeEquals(200);
            $this->assertText($node->getTitle(), 'Node title found on usage page.');
            $this->assertText('node', 'Registering entity type found on usage page.');
            $this->assertText('file', 'Registering module found on usage page.');
            foreach ($usage as $module) {
                foreach ($module as $entity_type) {
                    foreach ($entity_type as $entity) {
                        $this->assertText($entity, 'Usage count found on usage page.');
                    }
                }
            }
            $this->assertLinkByHref('node/' . $node->id(), 0, 'Link to registering entity found on usage page.');
        }
    }
    
    /**
     * Tests file listing usage page for entities with no canonical link template.
     */
    public function testFileListingUsageNoLink() {
        // Login with user with right permissions and test listing.
        $this->drupalLogin($this->adminUser);
        // Create a bundle and attach a File field to the bundle.
        $bundle = $this->randomMachineName();
        entity_test_create_bundle($bundle, NULL, 'entity_test_constraints');
        $this->createFileField('field_test_file', 'entity_test_constraints', $bundle, [], [
            'file_extensions' => 'txt png',
        ]);
        // Create file to attach to entity.
        $file = File::create([
            'filename' => 'druplicon.txt',
            'uri' => 'public://druplicon.txt',
            'filemime' => 'text/plain',
        ]);
        $file->setPermanent();
        file_put_contents($file->getFileUri(), 'hello world');
        $file->save();
        // Create entity and attach the created file.
        $entity_name = $this->randomMachineName();
        $entity = EntityTestConstraints::create([
            'uid' => 1,
            'name' => $entity_name,
            'type' => $bundle,
            'field_test_file' => [
                'target_id' => $file->id(),
            ],
        ]);
        $entity->save();
        // Create node entity and attach the created file.
        $node = $this->drupalCreateNode([
            'type' => 'article',
            'file' => $file,
        ]);
        $node->save();
        // Load the file usage page for the created and attached file.
        $this->drupalGet('admin/content/files/usage/' . $file->id());
        $this->assertSession()
            ->statusCodeEquals(200);
        // Entity name should be displayed, but not linked if Entity::toUrl
        // throws an exception
        $this->assertText($entity_name, 'Entity name is added to file usage listing.');
        $this->assertSession()
            ->linkNotExists($entity_name, 'Linked entity name not added to file usage listing.');
        $this->assertSession()
            ->linkExists($node->getTitle());
    }
    
    /**
     * Creates and saves a test file.
     *
     * @return \Drupal\Core\Entity\EntityInterface
     *   A file entity.
     */
    protected function createFile() {
        // Create a new file entity.
        $file = File::create([
            'uid' => 1,
            'filename' => 'druplicon.txt',
            'uri' => 'public://druplicon.txt',
            'filemime' => 'text/plain',
            'created' => 1,
            'changed' => 1,
            'status' => FILE_STATUS_PERMANENT,
        ]);
        file_put_contents($file->getFileUri(), 'hello world');
        // Save it, inserting a new record.
        $file->save();
        return $file;
    }

}