/*
    * This file is part of Waarp Project (named also Waarp or GG).
    *
    *  Copyright (c) 2019, Waarp SAS, and individual contributors by the @author
    *  tags. See the COPYRIGHT.txt in the distribution for a full listing of
    * individual contributors.
    *
    *  All Waarp Project is free software: you can redistribute it and/or
    * modify it under the terms of the GNU General Public License as published by
   * the Free Software Foundation, either version 3 of the License, or (at your
   * option) any later version.
   *
   * Waarp is distributed in the hope that it will be useful, but WITHOUT ANY
   * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
   * A PARTICULAR PURPOSE. See the GNU General Public License for more details.
   *
   *  You should have received a copy of the GNU General Public License along with
   * Waarp . If not, see <http://www.gnu.org/licenses/>.
   */
  package org.waarp.openr66.context.task;
  
  import org.waarp.common.logging.WaarpLogger;
  import org.waarp.common.logging.WaarpLoggerFactory;
  import org.waarp.common.tar.TarUtility;
  import org.waarp.openr66.context.R66Session;
  import org.waarp.openr66.protocol.exception.OpenR66ProtocolSystemException;
  
  import java.io.File;
  import java.io.IOException;
  import java.util.ArrayList;
  import java.util.List;
  
  /**
   * TAR task
   */
  public class TarTask extends AbstractTask {
    /**
     * Internal Logger
     */
    private static final WaarpLogger logger =
        WaarpLoggerFactory.getLogger(TarTask.class);
  
    /**
     * @param argRule
     * @param delay
     * @param argTransfer
     * @param session
     */
    public TarTask(final String argRule, final int delay,
                   final String argTransfer, final R66Session session) {
      super(TaskType.TAR, delay, argRule, argTransfer, session);
    }
  
    @Override
    public void run() {
      logger.info("TAR with {}:{}:{} and {}", argRule, argTransfer, delay,
                  session);
      String finalname = argRule;
      finalname = getReplacedValue(finalname, argTransfer == null? null :
          argTransfer.split(" "));
      boolean tar;
      switch (delay) {
        case 2: {
          // directory: tar finalname where finalname="target directory"
          final String[] args = finalname.split(" ");
          tar = TarUtility.createTarFromDirectory(args[1], args[0], true);
          break;
        }
        case 3: {
          // list of files: tar finalname where finalname="target file1 file2..."
          final String[] args = finalname.split(" ");
          final List<File> files = new ArrayList<File>(args.length - 1);
          for (int i = 1; i < args.length; i++) {
            files.add(new File(args[i]));
          }
          tar = TarUtility.createTarFromFiles(files, args[0]);
          break;
        }
        default:
          // untar
          // directory: untar finalname where finalname="source directory"
          final String[] args = finalname.split(" ");
          final File tarFile = new File(args[0]);
          final File directory = new File(args[1]);
          try {
            TarUtility.unTar(tarFile, directory);
            tar = true;
          } catch (final IOException e) {
            logger.warn("Error while untar: {}", e.getMessage());
            tar = false;
          }
          break;
      }
      if (!tar) {
        logger.error(
            "Tar error with " + argRule + ':' + argTransfer + ':' + delay +
            " and " + session);
        futureCompletion.setFailure(
            new OpenR66ProtocolSystemException("Tar error"));
       return;
     }
     futureCompletion.setSuccess();
   }
 
 }