/**
 * <copyright> Copyright 2006 by Know-Center, Graz, Austria </copyright>
 * PDF-AS has been contracted by the E-Government Innovation Center EGIZ, a
 * joint initiative of the Federal Chancellery Austria and Graz University of
 * Technology.
 *
 * Licensed under the EUPL, Version 1.1 or - as soon they will be approved by
 * the European Commission - subsequent versions of the EUPL (the "Licence");
 * You may not use this work except in compliance with the Licence.
 * You may obtain a copy of the Licence at:
 * http://www.osor.eu/eupl/
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the Licence is distributed on an "AS IS" basis,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the Licence for the specific language governing permissions and
 * limitations under the Licence.
 *
 * This product combines work with different licenses. See the "NOTICE" text
 * file for details on the various modules and licenses.
 * The "NOTICE" text file is part of the distribution. Any derivative works
 * that you distribute must include a readable copy of the "NOTICE" text file.
 */
package at.gv.egiz.pdfas.framework.config;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

import at.gv.egiz.pdfas.framework.vfilter.VerificationFilterParameters;
import at.gv.egiz.pdfas.impl.vfilter.VerificationFilterParametersImpl;
import at.knowcenter.wag.egov.egiz.cfg.SettingsReader;
import at.knowcenter.wag.egov.egiz.exceptions.SettingsException;

/**
 * Contains helpful Settings functions.
 * 
 * @author wprinz
 */
public final class SettingsHelper
{
  /**
   * The log.
   */
  private static final Log log = LogFactory.getLog(SettingsHelper.class);

  public static VerificationFilterParameters readVerificationFilterParametersFromSettings() throws SettingsException
  {
    boolean binaryOnly = getFlag("binary_only");
    boolean assumeOnlySB = getAssumeSB();
    boolean checkOld = getFlag("check_old_textual_sigs");

    VerificationFilterParameters vfp = new VerificationFilterParametersImpl(binaryOnly, assumeOnlySB, checkOld);
    return vfp;
  }

  protected static boolean getFlag(String settingsKey) throws SettingsException
  {
    String flag = SettingsReader.getInstance().getSetting(settingsKey, "false");
    boolean b = true;
    if (flag.equals("false"))
    {
      b = false;
    }
    return b;
  }

  protected static boolean getAssumeSB() throws SettingsException
  {
    // backward compatibility for typo
    String setting_with_typo = SettingsReader.getInstance().getSetting("assume_only_signauture_blocks", null);
    if (setting_with_typo != null)
    {
      log.warn("You still have the typo in your configuration file. Please change 'assume_only_signauture_blocks' to 'assume_only_signature_blocks'. Thanks.");
      boolean assumeOnlySB_typo = getFlag("assume_only_signauture_blocks");
      return assumeOnlySB_typo;
    }

    boolean assumeOnlySB = getFlag("assume_only_signature_blocks");
    return assumeOnlySB;
  }
}