/*
    * 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.command.exception.Reply550Exception;
  import org.waarp.common.file.FileUtils;
  import org.waarp.common.logging.WaarpLogger;
  import org.waarp.common.logging.WaarpLoggerFactory;
  import org.waarp.openr66.context.R66Session;
  import org.waarp.openr66.protocol.exception.OpenR66ProtocolSystemException;
  
  import java.io.File;
  import java.util.regex.Pattern;
  
  /**
   * Create a link of the current file and make the file pointing to it.
   * <p>
   * The link first tries to be a hard link, then a soft link, and if really not
   * possible (not supported by the
   * filesystem), it does a copy and rename task.
   */
  public class LinkRenameTask extends AbstractTask {
    /**
     * Internal Logger
     */
    private static final WaarpLogger logger =
        WaarpLoggerFactory.getLogger(LinkRenameTask.class);
    private static final Pattern COMPILE = Pattern.compile(" ");
  
    /**
     * @param argRule
     * @param delay
     * @param argTransfer
     * @param session
     */
    public LinkRenameTask(final String argRule, final int delay,
                          final String argTransfer, final R66Session session) {
      super(TaskType.LINKRENAME, delay, argRule, argTransfer, session);
    }
  
    @Override
    public final void run() {
      String finalname = argRule;
      finalname = getReplacedValue(finalname, COMPILE.split(argTransfer));
      logger.info("Move and Rename to {} with {}:{} and {}", finalname, argRule,
                  argTransfer, session);
      // First try hard link
      // FIXME wait for NIO.2 in JDK7 to have such functions, in the meantime only move...
      final File from = session.getFile().getTrueFile();
      final File to = new File(finalname);
      try {
        FileUtils.copy(from, to, false, false);
      } catch (final Reply550Exception e1) {
        logger.error(
            "Copy and Rename to " + finalname + " with " + argRule + ':' +
            argTransfer + " and " + session + ": {}", e1.getMessage());
        futureCompletion.setFailure(new OpenR66ProtocolSystemException(e1));
        return;
      }
      session.getRunner().setFileMoved(finalname, true);
      futureCompletion.setSuccess();
    }
  
  }