class FilePathTest

class FilePathTest extends MigrateUpgradeTestBase {
    use ExtensionListTestTrait;
    
    /**
     * {@inheritdoc}
     */
    protected $profile = 'testing';
    
    /**
     * {@inheritdoc}
     */
    protected $defaultTheme = 'stark';
    
    /**
     * The file system service.
     *
     * @var \Drupal\Core\File\FileSystemInterface
     */
    protected $fs;
    
    /**
     * The base path to the source files on the destination site.
     *
     * @var string[]
     */
    protected $localDirectory = [];
    
    /**
     * The file scheme variables in the source database.
     *
     * These are 'file_private_path', 'file_public_path', and
     * 'file_temporary_path',
     *
     * @var string[]
     */
    protected $sourceFileScheme = [];
    
    /**
     * {@inheritdoc}
     */
    protected static $modules = [
        'file',
        'migrate',
        'migrate_drupal',
        'migrate_drupal_ui',
    ];
    
    /**
     * {@inheritdoc}
     */
    protected function setUp() : void {
        parent::setUp();
        $this->fs = \Drupal::service('file_system');
        $this->loadFixture($this->getModulePath('migrate_drupal') . '/tests/fixtures/drupal7.php');
    }
    
    /**
     * Executes all steps of migrations upgrade.
     *
     * @param string $file_private_path
     *   The source database file_private_path value.
     * @param string $file_public_path
     *   The source database file_public_path value.
     * @param string $file_temporary_path
     *   The source database file_temporary_path value.
     * @param string $private
     *   The path to the source private files.
     * @param string $public
     *   The path to the source public files.
     * @param string $temporary
     *   The path to the source temporary files.
     *
     * @dataProvider providerTestFilePath
     */
    public function testFilePath(string $file_private_path, string $file_public_path, string $file_temporary_path, string $private, string $public, string $temporary) : void {
        $this->sourceFileScheme['private'] = $file_private_path;
        $this->sourceFileScheme['public'] = $file_public_path;
        $this->sourceFileScheme['temporary'] = $file_temporary_path;
        $this->localDirectory['private'] = $private;
        $this->localDirectory['public'] = $public;
        $this->localDirectory['temporary'] = $temporary;
        // Create the source files.
        $this->makeFiles();
        // Set the source db variables.
        $this->sourceDatabase
            ->update('variable')
            ->fields([
            'value' => serialize($file_private_path),
        ])
            ->condition('name', 'file_private_path')
            ->execute();
        $this->sourceDatabase
            ->update('variable')
            ->fields([
            'value' => serialize($file_public_path),
        ])
            ->condition('name', 'file_public_path')
            ->execute();
        $this->sourceDatabase
            ->update('variable')
            ->fields([
            'value' => serialize($file_temporary_path),
        ])
            ->condition('name', 'file_temporary_path')
            ->execute();
        $connection_options = $this->sourceDatabase
            ->getConnectionOptions();
        $driver = $connection_options['driver'];
        // Use the driver connection form to get the correct options out of the
        // database settings. This supports all of the databases we test against.
        $drivers = Database::getDriverList()->getInstallableList();
        $form = $drivers[$driver]->getInstallTasks()
            ->getFormOptions($connection_options);
        $connection_options = array_intersect_key($connection_options, $form + $form['advanced_options']);
        // Remove isolation_level since that option is not configurable in the UI.
        unset($connection_options['isolation_level']);
        $edit = [
            $driver => $connection_options,
            'version' => '7',
        ];
        if (count($drivers) !== 1) {
            $edit['driver'] = $driver;
        }
        // Set the public and private base paths for the Credential Form.
        $edit['source_private_file_path'] = $this->fs
            ->realpath($this->getSourcePath('private'));
        $edit['source_base_path'] = $this->fs
            ->realpath($this->getSourcePath('public'));
        $edits = $this->translatePostValues($edit);
        // Start the upgrade.
        $this->drupalGet('/upgrade');
        $this->submitForm([], 'Continue');
        $this->submitForm($edits, 'Review upgrade');
        // The migrations are now in store - remove all but the file migrations.
        $store = \Drupal::service('tempstore.private')->get('migrate_drupal_ui');
        $migration_array = array_intersect_key($store->get('migrations'), array_flip([
            'd7_file',
            'd7_file_private',
        ]));
        $store->set('migrations', $migration_array);
        // Perform the migrations.
        $this->submitForm([], 'Perform upgrade');
        $this->resetAll();
        $this->assertFileMigrations();
    }
    
    /**
     * Data provider of test dates for file path test.
     *
     * @return string[][]
     *   An array of test data.
     */
    public static function providerTestFilePath() {
        return [
            'All source base paths are at temporary' => [
                'sites/default/private',
                'sites/default/files',
                '/tmp',
                '',
                '',
                '',
            ],
            'The private files are in a subdirectory' => [
                'sites/default/private',
                'sites/default/files',
                '/tmp',
                'abc',
                '',
                '',
            ],
            ' The public files are in a subdirectory' => [
                'sites/default/private',
                'sites/default/files',
                '/tmp',
                '',
                'def',
                '',
            ],
            'The private, public and temporary files are in separate subdirectories' => [
                'private',
                'files',
                '/tmp',
                'abc',
                'def',
                'xyz',
            ],
        ];
    }
    
    /**
     * Creates files for the test.
     *
     * The source files are written to a subdirectory of the temporary files
     * directory of the test sites. The subdirectory path always ends with the
     * path to the relevant scheme as set in the source variable table.
     *
     * For example:
     *   The source site files_managed table.
     *     uri: public://foo.txt
     *     filename: foo.txt
     *   The source site variable table.
     *     file_public_path: sites/default/files
     *   Local directory
     *     /bar
     *
     * The resulting directory is /bar/sites/default/files/foo.txt.
     */
    protected function makeFiles() : void {
        // Get file information from the source database.
        foreach ($this->getManagedFiles() as $file) {
            $this->assertSame(1, preg_match('/^(private|public|temporary):/', $file['uri'], $matches));
            $scheme = $matches[1];
            $path = $this->sourceFileScheme[$scheme] ?? '';
            $filepath = implode('/', [
                $this->getSourcePath($scheme),
                $path,
                $file['filename'],
            ]);
            // Create the file.
            $source_file = @fopen($filepath, 'w');
            if (!$source_file) {
                // If fopen didn't work, make sure there's a writable directory in
                // place.
                $dir = $this->fs
                    ->dirname($filepath);
                $this->fs
                    ->prepareDirectory($dir, FileSystemInterface::CREATE_DIRECTORY | FileSystemInterface::MODIFY_PERMISSIONS);
                // Let's try that fopen again.
                $source_file = @fopen($filepath, 'w');
            }
            fwrite($source_file, '42');
        }
    }
    
    /**
     * Gets the source base path for the Credential form.
     *
     * @param string $scheme
     *   The file scheme.
     */
    public function getSourcePath($scheme) {
        $base_path = $this->localDirectory[$scheme] ?: '';
        // Puts the source files in the site temp directory.
        return $this->tempFilesDirectory . '/' . $base_path;
    }
    
    /**
     * Gets the file data.
     *
     * @return string[][]
     *   Data from the source file_managed table.
     */
    public function getManagedFiles() {
        return [
            [
                'filename' => 'cube.jpeg',
                'uri' => 'public://cube.jpeg',
            ],
            [
                'filename' => 'ds9.txt',
                'uri' => 'public://ds9.txt',
            ],
            [
                'filename' => 'Babylon5.txt',
                'uri' => 'private://Babylon5.txt',
            ],
            [
                'filename' => 'DeepSpaceNine.txt',
                'uri' => 'temporary://DeepSpaceNine.txt',
            ],
        ];
    }
    
    /**
     * {@inheritdoc}
     */
    protected function getEntityCounts() : array {
        return [];
    }
    
    /**
     * {@inheritdoc}
     */
    protected function getEntityCountsIncremental() : array {
        return [];
    }
    
    /**
     * {@inheritdoc}
     */
    protected function getAvailablePaths() : array {
        return [];
    }
    
    /**
     * {@inheritdoc}
     */
    protected function getMissingPaths() : array {
        return [];
    }
    
    /**
     * {@inheritdoc}
     */
    protected function getSourceBasePath() : string {
        return '';
    }

}