isPdfProtected method

Implementation

@override
Future<bool> isPdfProtected({required String filePath}) async {
  try {
    final file = File(filePath);
    if (!file.existsSync()) {
      return false;
    }

    // Simple check for PDF header
    final bytes = await file.openRead(0, 1024).toList();
    final data = bytes.expand((x) => x).toList();
    final content = String.fromCharCodes(data);

    // Look for encryption dictionary in PDF
    // This is a simple check - not comprehensive
    if (content.contains('/Encrypt') || content.contains('/Encrypt ')) {
      return true;
    }

    return false;
  } catch (e) {
    if (kDebugMode) {
      print('Error checking PDF protection: $e');
    }
    return false;
  }
}