appendAsset method

@override Future<Either<Failure, Unit>> appendAsset(String assetPath)

Implementation

@override
Future<Either<Failure, Unit>> appendAsset(String assetPath) async {
  try {
    final content = _yaml.readAsStringSync();
    final assetTagExists = content.contains('assets:');

    if (assetTagExists) {
      final replaceContent = [
        'assets:',
        '    - $assetPath/',
      ].join('\n');
      _yaml.writeAsStringSync(content.replaceAll('assets:', replaceContent));
    } else {
      final appendContent = [
        '',
        '  assets:',
        '    - $assetPath/',
      ].join('\n');
      _yaml.writeAsStringSync(appendContent, mode: FileMode.append);
    }
    return const Right(unit);
  } catch (e) {
    return Left(UnknownFailure(cause: e.toString()));
  }
}