/*
    * 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.client.spooledService;
  
  import org.waarp.common.file.FileUtils;
  import org.waarp.common.future.WaarpFuture;
  import org.waarp.common.logging.SysErrLogger;
  import org.waarp.common.logging.WaarpLogger;
  import org.waarp.common.logging.WaarpLoggerFactory;
  import org.waarp.common.service.EngineAbstract;
  import org.waarp.common.utility.ParametersChecker;
  import org.waarp.common.utility.SystemPropertyUtil;
  import org.waarp.common.utility.WaarpShutdownHook;
  import org.waarp.openr66.client.SpooledDirectoryTransfer;
  import org.waarp.openr66.protocol.configuration.Configuration;
  import org.waarp.openr66.protocol.configuration.Messages;
  import org.waarp.openr66.protocol.configuration.R66SystemProperties;
  import org.waarp.openr66.protocol.utils.ChannelUtils;
  
  import java.io.FileInputStream;
  import java.util.ArrayList;
  import java.util.Properties;
  import java.util.concurrent.TimeUnit;
  
  /**
   * Engine used to start and stop the SpooledDirectory service
   */
  public class SpooledEngine extends EngineAbstract {
    /**
     * Internal Logger
     */
    private static final WaarpLogger logger =
        WaarpLoggerFactory.getLogger(SpooledEngine.class);
  
    static final WaarpFuture closeFuture = new WaarpFuture(true);
    private static final String[] STRING_0_LENGTH = {};
  
    @Override
    public void run() {
      final String config =
          SystemPropertyUtil.get(R66SystemProperties.OPENR66_CONFIGFILE);
      if (config == null) {
        logger.error("Cannot find " + R66SystemProperties.OPENR66_CONFIGFILE +
                     " parameter for SpooledEngine");
        closeFuture.cancel();
        shutdown();
        return;
      }
      Configuration.configuration.getShutdownConfiguration().serviceFuture =
          closeFuture;
      try {
        final Properties prop = new Properties();
        final FileInputStream in = new FileInputStream(config);
        try {
          prop.load(in);
          final ArrayList<String> array = new ArrayList<String>();
          for (final Object okey : prop.keySet()) {
            final String key = (String) okey;
            final String val = prop.getProperty(key);
            if ("xmlfile".equals(key)) {
              if (ParametersChecker.isNotEmpty(val)) {
                array.add(0, val);
              } else {
                throw new Exception("Initialization in error: missing xmlfile");
              }
            } else {
              array.add('-' + key);
              if (ParametersChecker.isNotEmpty(val)) {
                array.add(val);
              }
            }
          }
          if (!SpooledDirectoryTransfer.initialize(array.toArray(STRING_0_LENGTH),
                                                   false)) {
            throw new Exception("Initialization in error");
          }
        } finally {
          FileUtils.close(in);
        }
      } catch (final Throwable e) {
        logger.error("Cannot start SpooledDirectory", e);
        closeFuture.cancel();
       shutdown();
       return;
     }
     logger.warn("SpooledDirectory Service started with " + config);
   }
 
   @Override
   public final void shutdown() {
     WaarpShutdownHook.shutdownWillStart();
     logger.info("Shutdown");
     for (final SpooledDirectoryTransfer spooled : SpooledDirectoryTransfer.list) {
       spooled.stop();
     }
     Configuration.configuration.setTimeoutCon(
         Configuration.configuration.getTimeoutCon() / 10);
     try {
       while (!SpooledDirectoryTransfer.executorService.awaitTermination(
           Configuration.configuration.getTimeoutCon(), TimeUnit.MILLISECONDS)) {
         Thread.sleep(Configuration.configuration.getTimeoutCon());
       }
     } catch (final InterruptedException e) {//NOSONAR
       SysErrLogger.FAKE_LOGGER.ignoreLog(e);
     }
     for (final SpooledDirectoryTransfer spooledDirectoryTransfer : SpooledDirectoryTransfer.list) {
       logger.warn(Messages.getString("SpooledDirectoryTransfer.58") +
                   spooledDirectoryTransfer.name + ": " +
                   spooledDirectoryTransfer.getSent() + " success, " +
                   spooledDirectoryTransfer.getError() + Messages.getString(
           "SpooledDirectoryTransfer.60")); //$NON-NLS-1$
     }
     SpooledDirectoryTransfer.list.clear();
     logger.info("Shutdown network");
     SpooledDirectoryTransfer.networkTransactionStatic.closeAll(false);
     logger.info("All");
     ChannelUtils.startShutdown();
     closeFuture.setSuccess();
     logger.info("SpooledDirectory Service stopped");
   }
 
   @Override
   public final boolean isShutdown() {
     return closeFuture.isDone();
   }
 
   @Override
   public final boolean waitShutdown() {
     closeFuture.awaitOrInterruptible();
     logger.info("Shutdown on going: {}", closeFuture.isSuccess());
     return closeFuture.isSuccess();
   }
 }