/*
    * 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.gateway.ftp;
  
  import org.waarp.common.file.filesystembased.FilesystemBasedFileParameterImpl;
  import org.waarp.common.logging.SysErrLogger;
  import org.waarp.common.logging.WaarpLogger;
  import org.waarp.common.logging.WaarpLoggerFactory;
  import org.waarp.common.logging.WaarpSlf4JLoggerFactory;
  import org.waarp.ftp.core.exception.FtpNoConnectionException;
  import org.waarp.gateway.ftp.config.FileBasedConfiguration;
  import org.waarp.gateway.ftp.control.ExecBusinessHandler;
  import org.waarp.gateway.ftp.data.FileSystemBasedDataBusinessHandler;
  import org.waarp.gateway.ftp.exec.AbstractExecutor;
  import org.waarp.gateway.ftp.service.FtpEngine;
  import org.waarp.openr66.protocol.configuration.Configuration;
  
  /**
   * Exec FTP Server using simple authentication (XML FileInterface based), and
   * standard Directory and
   * FileInterface implementation (Filesystem based).
   */
  public class ExecGatewayFtpServer {
    /**
     * Internal Logger
     */
    private static WaarpLogger logger;
  
    private ExecGatewayFtpServer() {
    }
  
    /**
     * Take a simple XML file as configuration.
     *
     * @param args
     */
    public static void main(final String[] args) {
      if (args.length < 1) {
        SysErrLogger.FAKE_LOGGER.syserr(
            "Usage: " + ExecGatewayFtpServer.class.getName() +
            " <config-file> [<r66config-file>]");
        return;
      }
      WaarpLoggerFactory.setDefaultFactoryIfNotSame(
          new WaarpSlf4JLoggerFactory(null));
      logger = WaarpLoggerFactory.getLogger(ExecGatewayFtpServer.class);
      initialize(args[0], args.length > 1? args[1] : null);
    }
  
    public static boolean initialize(final String config, final String r66file) {
      boolean asAService = false;
      if (logger == null) {
        // Called as a service
        logger = WaarpLoggerFactory.getLogger(ExecGatewayFtpServer.class);
        asAService = true;
      }
      final FileBasedConfiguration configuration =
          new FileBasedConfiguration(ExecGatewayFtpServer.class,
                                     ExecBusinessHandler.class,
                                     FileSystemBasedDataBusinessHandler.class,
                                     new FilesystemBasedFileParameterImpl());
      if (asAService) {
        configuration.getShutdownConfiguration().serviceFuture =
            FtpEngine.closeFuture;
      }
      if (!configuration.setConfigurationServerFromXml(config)) {
        SysErrLogger.FAKE_LOGGER.syserr("Bad main configuration");
        return false;
      }
      Configuration.configuration.setUseLocalExec(configuration.isUseLocalExec());
      if (AbstractExecutor.useDatabase) {
        // Use R66 module
        if (r66file != null) {
          if (!org.waarp.openr66.configuration.FileBasedConfiguration.setSubmitClientConfigurationFromXml(
              Configuration.configuration, r66file)) {
            SysErrLogger.FAKE_LOGGER.syserr("Bad R66 configuration");
            return false;
          }
        } else {
          // Cannot get R66 functional
          SysErrLogger.FAKE_LOGGER.syserr(
             "No R66PrepareTransfer configuration file");
       }
     } else {
       SysErrLogger.FAKE_LOGGER.syserr("No R66PrepareTransfer support");
     }
     FileBasedConfiguration.fileBasedConfiguration = configuration;
     // Start server.
     configuration.configureLExec();
     try {
       configuration.serverStartup();
     } catch (final FtpNoConnectionException e1) {
       SysErrLogger.FAKE_LOGGER.syserr(e1);
       configuration.releaseResources();
       return false;
     }
     configuration.configureHttps();
     configuration.configureConstraint();
     try {
       configuration.configureSnmp();
     } catch (final FtpNoConnectionException e) {
       SysErrLogger.FAKE_LOGGER.syserr(
           "Cannot start SNMP support: " + e.getMessage());
     }
     logger.warn("FTP started " +
                 (configuration.getFtpInternalConfiguration().isUsingNativeSsl()?
                     "Implicit SSL On" :
                     configuration.getFtpInternalConfiguration()
                                  .isAcceptAuthProt()? "Explicit SSL On" :
                         "with SSL Off"));
     return true;
   }
 
 }