/**
    * This file Copyright (c) 2003-2010 Magnolia International
    * Ltd.  (http://www.magnolia-cms.com). All rights reserved.
    *
    *
    * This file is dual-licensed under both the Magnolia
    * Network Agreement and the GNU General Public License.
    * You may elect to use one or the other of these licenses.
    *
   * This file is distributed in the hope that it will be
   * useful, but AS-IS and WITHOUT ANY WARRANTY; without even the
   * implied warranty of MERCHANTABILITY or FITNESS FOR A
   * PARTICULAR PURPOSE, TITLE, or NONINFRINGEMENT.
   * Redistribution, except as permitted by whichever of the GPL
   * or MNA you select, is prohibited.
   *
   * 1. For the GPL license (GPL), you can redistribute and/or
   * modify this file under the terms of the GNU General
   * Public License, Version 3, as published by the Free Software
   * Foundation.  You should have received a copy of the GNU
   * General Public License, Version 3 along with this program;
   * if not, write to the Free Software Foundation, Inc., 51
   * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
   *
   * 2. For the Magnolia Network Agreement (MNA), this file
   * and the accompanying materials are made available under the
   * terms of the MNA which accompanies this distribution, and
   * is available at http://www.magnolia-cms.com/mna.html
   *
   * Any modifications to this file must keep this entire header
   * intact.
   *
   */
  package info.magnolia.content2bean.impl;
  
  import info.magnolia.cms.util.ClasspathResourcesUtil;
  import info.magnolia.content2bean.TypeDescriptor;
  
  import java.io.File;
  import java.io.IOException;
  import java.io.InputStream;
  import java.util.Properties;
  
  import info.magnolia.objectfactory.ClassFactory;
  import info.magnolia.objectfactory.Classes;
  import org.apache.commons.io.IOUtils;
  import org.apache.commons.lang.StringUtils;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  
  /**
   * @author philipp
   * @version $Id: DescriptorFileBasedTypeMapping.java 32667 2010-03-13 00:37:06Z gjoseph $
   *
   */
  public class DescriptorFileBasedTypeMapping extends TypeMappingImpl {
  
      private static Logger log = LoggerFactory.getLogger(DescriptorFileBasedTypeMapping.class);
  
      public DescriptorFileBasedTypeMapping() {
          String[] fileNames = ClasspathResourcesUtil.findResources(new ClasspathResourcesUtil.Filter(){
              public boolean accept(String name) {
                  return name.endsWith(".content2bean");
              }
          });
  
          for (int i = 0; i < fileNames.length; i++) {
              String fileName = fileNames[i];
              processFile(fileName);
          }
      }
  
      protected void processFile(String fileName) {
          Properties props = new Properties();
          InputStream stream = null;
          try {
              stream = ClasspathResourcesUtil.getStream(fileName);
              props.load(stream);
  
          }
          catch (IOException e) {
              log.error("can't read collection to bean information " + fileName,  e);
          }
          IOUtils.closeQuietly(stream);
  
          String className = StringUtils.replaceChars(fileName, File.separatorChar, '.');
          className = StringUtils.removeStart(className, ".");
          className = StringUtils.removeEnd(className, ".content2bean");
          try {
              Class<?> typeClass = Classes.getClassFactory().forName(className);
  
              TypeDescriptor typeDescriptor = processProperties(typeClass, props);
              addTypeDescriptor(typeClass, typeDescriptor);
          } catch (Exception e) {
              log.error("can't instantiate type descriptor for " + className, e);
          }
      }
  
     protected TypeDescriptor processProperties(Class<?> className, Properties props) throws Exception {
         String descriptorClassName = StringUtils.defaultIfEmpty(props.getProperty("descriptorClass"), PropertiesBasedTypeDescriptor.class.getName());
         final ClassFactory cl = Classes.getClassFactory();
         Class<? extends TypeDescriptor> descriptorClass = cl.forName(descriptorClassName);
         return cl.newInstance(descriptorClass, props);
     }
 }