/**
 * 
 */
package at.knowcenter.wag.egov.egiz.sig.sigkz;

import at.knowcenter.wag.egov.egiz.PdfASID;
import at.knowcenter.wag.egov.egiz.exceptions.ConnectorException;
import at.knowcenter.wag.egov.egiz.exceptions.InvalidIDException;
import at.knowcenter.wag.egov.egiz.framework.SignatorFactory;
import at.knowcenter.wag.egov.egiz.sig.connectors.bku.SignSignatureObject;
import at.knowcenter.wag.egov.egiz.sig.sigid.DetachedLocRefMOAIdFormatter;
import at.knowcenter.wag.egov.egiz.sig.sigid.HotfixIdFormatter;

/**
 * @author wprinz
 *
 */
public final class SigKZIDHelper
{
  
  public static boolean isTextual(PdfASID sig_kz)
  {
    if (sig_kz == null)
    {
      // Old signature -> must be textual.
      
      return true;
    }
    
    // new signauture -> sig_kz decides
    return sig_kz.getType().equals(SignatorFactory.TYPE_TEXTUAL);
  }
  
  public static boolean isBinary(PdfASID sig_kz)
  {
    return ! isTextual(sig_kz);
  }
  
  
  public static boolean isMOASigned(PdfASID sig_kz, String sig_id)
  {
    if (sig_kz == null || sig_kz.getVersion().equals(SignatorFactory.VERSION_1_0_0))
    {
      // old signature - if sig_id is null this means MOA
      
      return sig_id == null;
    }
    
    // :begin
    
    if(sig_id == null)
    	return true;
    
    if(sig_id.equals(""))
    	return true;
    
    // :end
    
    // new signature - sig_id decides
    String [] ids = sig_id.split("@");
    String prefix = ids[0];
    
    if (prefix.equals(DetachedLocRefMOAIdFormatter.SIG_ID_PREFIX))
    //if(!prefix.equals(""))
    {
      return true;
    }
    return false;
  }

  public static boolean isMOASigned(SignSignatureObject so)
  {
    String sig_kz = so.kz;
    String sig_id = so.id;
    PdfASID kz = null;
    if (sig_kz != null)
    {
      try
      {
        kz = new PdfASID(sig_kz);
      }
      catch (InvalidIDException e)
      {
        e.printStackTrace();
      }
    }
    
    return isMOASigned(kz, sig_id);
  }

  public static boolean isOldBKU(PdfASID sig_kz, String sig_id) throws ConnectorException
  {
    if (sig_kz == null)
    {
      return true;
    }

    if (sig_kz.getVersion().equals(SignatorFactory.VERSION_1_0_0))
    {
      if (sig_id == null)
      {
        throw new ConnectorException(310, "The SIG_ID is null - so this isn't a BKU at all.");
      }

      String[] sig_id_parts = sig_id.split("@");
      if (sig_id_parts.length == 2)
      {
        return true;
      }
      if (sig_id_parts[0].equals(HotfixIdFormatter.SIG_ID_PREFIX))
      {

        return false;
      }

      throw new ConnectorException(310, "The SIG_KZ version is 1.0.0, but SIG_ID is neither MOA nor Old base64 nor Hotfix base64 ???'");
    }

    return false;
  }

  public static boolean isOldBKU(SignSignatureObject so) throws ConnectorException
  {
    String sig_kz = so.kz;
    String sig_id = so.id;
    PdfASID kz = null;
    if (sig_kz != null)
    {
      try
      {
        kz = new PdfASID(sig_kz);
      }
      catch (InvalidIDException e)
      {
        e.printStackTrace();
      }
    }
    
    return isOldBKU(kz, sig_id);
  }

}