/**
    * This file Copyright (c) 2014-2018 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.module.delta;
  
  import info.magnolia.init.MagnoliaConfigurationProperties;
  import info.magnolia.module.InstallContext;
  import info.magnolia.objectfactory.Components;
  import info.magnolia.repository.RepositoryConstants;
  
  import java.io.File;
  import java.io.IOException;
  
  import javax.jcr.Node;
  import javax.jcr.RepositoryException;
  import javax.jcr.Session;
  
  import org.apache.commons.io.FileUtils;
  
  /**
   * Removes install file(s) from ${magnolia.home}/${filesPath} and its md5 node from "config:server/install/mgnl-files/${filesPath}".
   */
  public class RemoveInstallFilesTask extends AbstractRepositoryTask {
  
      protected static final String INSTALL_FILES_PATH = "/server/install/mgnl-files/";
      private final String filesPath;
  
      public RemoveInstallFilesTask(String name, String filesPath) {
          this(name, String.format("Removes install files '%s'.", filesPath), filesPath);
      }
  
      public RemoveInstallFilesTask(String name, String description, String filesPath) {
          super(name, description);
          this.filesPath = filesPath;
      }
  
      @Override
      protected void doExecute(InstallContext ctx) throws RepositoryException, TaskExecutionException {
  
          final Session session = ctx.getJCRSession(RepositoryConstants.CONFIG);
  
          if (!session.nodeExists(INSTALL_FILES_PATH + filesPath)) {
              ctx.warn(String.format("Was supposed to remove md5 for file '%s' but the md5 node '%s' was not found.", filesPath, INSTALL_FILES_PATH + filesPath));
          } else {
              Node remove = session.getNode(INSTALL_FILES_PATH + filesPath);
              remove.remove();
          }
  
          String fileSystemPath = Components.getComponent(MagnoliaConfigurationProperties.class).getProperty("magnolia.home");
          File file = new File(fileSystemPath + "/" + filesPath);
  
          if (!file.exists()) {
              ctx.warn(String.format("Was supposed to remove file '%s' but the file was not found.", file));
              return;
          }
          try {
              if (file.isDirectory()) {
                  FileUtils.deleteDirectory(file);
              } else {
                  file.delete();
              }
          } catch (IOException e) {
              ctx.error(String.format("Was supposed to remove file '%s' but failed with exception:", file), e);
          }
      }
  }