/*
    * Copyright 2012 The Kuali Foundation.
    * 
    * Licensed under the Educational Community License, Version 2.0 (the "License");
    * you may not use this file except in compliance with the License.
    * You may obtain a copy of the License at
    * 
    * http://www.opensource.org/licenses/ecl2.php
    * 
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  package org.kuali.ole.docstore.utility;
  
  import org.apache.commons.io.FileUtils;
  import org.kuali.ole.docstore.DocStoreConstants;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  import java.io.File;
  import java.net.URL;
  import java.util.Enumeration;
  
  /**
   * Class to Doc Store Settings Util.
   * 
   * @author Rajesh Chowdary K
   * @created Apr 9, 2012
   */
  public class DocStoreSettingsUtil {
  
      private static final DocStoreSettingsUtil inst   = new DocStoreSettingsUtil();
      private static final Logger logger               = LoggerFactory.getLogger(DocStoreSettingsUtil.class);
  
      /**
       * 
       * Method to copyResources
       */
      public void copyResources() {
          try {
              File targetFolder = new File(DocStoreConstants.DOCSTORE_SETTINGS_DIR_PATH + File.separator + DocStoreConstants.RESOURCES_DIR_NAME);
              if (!targetFolder.exists() || (targetFolder.exists() && targetFolder.list().length <= 0)) {
                  Enumeration<URL> resources = this.getClass().getClassLoader().getResources(DocStoreConstants.RESOURCES_DIR_NAME);
                  boolean canItBeTaken = false;
                  while (resources.hasMoreElements()) {
                      URL url = resources.nextElement();
                      try {
                          url.toURI();
                          canItBeTaken = true;
                      } catch (Exception e) {
                          e.printStackTrace();
                      }
                      if (canItBeTaken) {
                          logger.debug("Copying Settings from source @:" + url.getFile());
                          File sourceDir = new File(url.toURI());
                          FileUtils.copyDirectoryToDirectory(sourceDir, targetFolder.getParentFile());
                      }
                  }
                  logger.debug("Copied Settings @: " + DocStoreConstants.DOCSTORE_SETTINGS_DIR_PATH);
              } else
                  logger.info("Using Existing Settings @: " + DocStoreConstants.DOCSTORE_SETTINGS_DIR_PATH);
          } catch (Exception e) {
              e.printStackTrace();
          }
      }
  
      private DocStoreSettingsUtil() {
      }
  
      public static DocStoreSettingsUtil getInstance() {
          return inst;
      }
  
  }