trait FixtureUtilityTrait

trait FixtureUtilityTrait {
    
    /**
     * Mirrors a fixture directory to the given path.
     *
     * Files not in the source fixture directory will not be deleted from
     * destination directory. After copying the files to the destination directory
     * the files and folders will be converted so that can be used in the tests.
     * The conversion includes:
     * - Renaming '_git' directories to '.git'
     * - Renaming files ending in '.info.yml.hide' to remove '.hide'.
     *
     * @param string $source_path
     *   The source path.
     * @param string $destination_path
     *   The path to which the fixture files should be mirrored.
     */
    protected static function copyFixtureFilesTo(string $source_path, string $destination_path) : void {
        (new Filesystem())->mirror($source_path, $destination_path, NULL, [
            'override' => TRUE,
            'delete' => FALSE,
        ]);
        static::renameInfoYmlFiles($destination_path);
        static::renameGitDirectories($destination_path);
    }
    
    /**
     * Renames all files that end with .info.yml.hide.
     *
     * @param string $dir
     *   The directory to be iterated through.
     */
    protected static function renameInfoYmlFiles(string $dir) : void {
        // Construct the iterator.
        $it = new RecursiveDirectoryIterator($dir, \RecursiveIteratorIterator::SELF_FIRST);
        // Loop through files and rename them.
        foreach (new \RecursiveIteratorIterator($it) as $file) {
            if ($file->getExtension() == 'hide') {
                rename($file->getPathname(), $dir . DIRECTORY_SEPARATOR . $file->getRelativePath() . DIRECTORY_SEPARATOR . str_replace(".hide", "", $file->getFilename()));
            }
        }
    }
    
    /**
     * Renames _git directories to .git.
     *
     * @param string $dir
     *   The directory to be iterated through.
     */
    private static function renameGitDirectories(string $dir) : void {
        $iter = new \RecursiveIteratorIterator(new RecursiveDirectoryIterator($dir, RecursiveDirectoryIterator::SKIP_DOTS), \RecursiveIteratorIterator::SELF_FIRST, \RecursiveIteratorIterator::CATCH_GET_CHILD);
        
        /** @var \Symfony\Component\Finder\SplFileInfo $file */
        foreach ($iter as $file) {
            if ($file->isDir() && $file->getFilename() === '_git' && $file->getRelativePathname()) {
                rename($file->getPathname(), $file->getPath() . DIRECTORY_SEPARATOR . '.git');
            }
        }
    }

}