/*
    * 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.CommandAbstractException;
  import org.waarp.common.logging.WaarpLogger;
  import org.waarp.common.logging.WaarpLoggerFactory;
  import org.waarp.common.utility.ParametersChecker;
  import org.waarp.compress.MalformedInputException;
  import org.waarp.compress.WaarpZstdCodec;
  import org.waarp.openr66.context.R66Session;
  import org.waarp.openr66.protocol.exception.OpenR66ProtocolSystemException;
  
  import java.io.File;
  
  /**
   * Compress using ZSTD, Rename and Delete the current file
   */
  public class CompressTask extends AbstractTask {
    /**
     * Internal Logger
     */
    private static final WaarpLogger logger =
        WaarpLoggerFactory.getLogger(CompressTask.class);
  
    /**
     * @param argRule
     * @param delay
     * @param argTransfer
     * @param session
     */
    public CompressTask(final String argRule, final int delay,
                        final String argTransfer, final R66Session session) {
      super(TaskType.COMPRESS, delay, argRule, argTransfer, session);
    }
  
    @Override
    public void run() {
      String finalname = argRule;
      finalname = getReplacedValue(finalname, BLANK.split(argTransfer)).trim()
                                                                       .replace(
                                                                           '\\',
                                                                           '/');
      final File from = session.getFile().getTrueFile();
      if (ParametersChecker.isEmpty(finalname)) {
        finalname = from.getParent() + "/" + session.getFile().getBasename();
        if (delay == 0) {
          finalname += ".zstd";
        } else {
          finalname += ".unzstd";
        }
      }
      logger.debug("{} and " + "Rename to {} with {}:{} and {}",
                   (delay == 1? "Decompress" : "Compress"), finalname, argRule,
                   argTransfer, session);
      final File to = new File(finalname);
      logger.debug("From {} {} to {} {} using {}", from, from.canRead(), to,
                   to.canRead(), (delay == 1? "Decompress" : "Compress"));
      try {
        final WaarpZstdCodec zstdCodec = new WaarpZstdCodec();
        if (delay == 1) {
          zstdCodec.decompress(from, to);
        } else {
          zstdCodec.compress(from, to);
        }
        if (!from.delete()) {
          logger.warn("File {} not correctly deleted", from);
        }
      } catch (final MalformedInputException e) {
        logger.error((delay == 1? "Decompress" : "Compress") + " and Rename to " +
                     finalname + " with " + argRule + ':' + argTransfer +
                     " and " + session + ": {}", e.getMessage());
        futureCompletion.setFailure(e);
        return;
      }
      try {
        session.getFile().replaceFilename(finalname, true);
      } catch (final CommandAbstractException e) {
        logger.error(
            "Replace with Compressed file as " + finalname + " with " + argRule +
            ':' + argTransfer + " and " + session + ": {}", e.getMessage());
        futureCompletion.setFailure(new OpenR66ProtocolSystemException(e));
       return;
     }
     session.getRunner().setFileMoved(finalname, true);
     logger.debug("From {} {} to {} {} using {}", from, from.canRead(), to,
                  to.canRead(), (delay == 1? "Decompress" : "Compress"));
     futureCompletion.setSuccess();
   }
 
 }