/*
    * Licensed to the Apache Software Foundation (ASF) under one or more
    * contributor license agreements.  See the NOTICE file distributed with
    * this work for additional information regarding copyright ownership.
    * The ASF licenses this file to You under the Apache License, Version 2.0
    * (the "License"); you may not use this file except in compliance with
    * the License.  You may obtain a copy of the License at
    *
    *      http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  package org.apache.commons.vfs2.provider.ftp;
  
  import java.nio.charset.StandardCharsets;
  import java.time.Instant;
  
  import org.apache.commons.net.PrintCommandListener;
  import org.apache.commons.net.io.Util;
  import org.apache.commons.vfs2.FileObject;
  import org.apache.commons.vfs2.FileSystemManager;
  import org.apache.commons.vfs2.FileSystemOptions;
  import org.apache.commons.vfs2.VFS;
  
  public class Main {
  
      public static void main(final String[] args) {
          final String host = "localhost";
          final String remoteDir = "/unicode";
          try {
              // System.setProperty("file.encoding", "UTF-8");
              final FileSystemManager manager = VFS.getManager();
              final FileSystemOptions opts = new FileSystemOptions();
              final FtpFileSystemConfigBuilder builder = FtpFileSystemConfigBuilder.getInstance();
              builder.setAutodetectUtf8(opts, true);
              builder.setControlEncoding(opts, StandardCharsets.UTF_8);
              builder.setUserDirIsRoot(opts, false);
              builder.setPassiveMode(opts, true);
              builder.setFileType(opts, FtpFileType.BINARY);
              final String ftpUrl = "ftp://" + host + remoteDir;
              try (FileObject remoteFolder = manager.resolveFile(ftpUrl, opts)) {
                  final FtpFileObject ftpFileObject = (FtpFileObject) remoteFolder;
                  final FtpFileSystem ftpFileSystem = (FtpFileSystem) ftpFileObject.getFileSystem();
                  final FTPClientWrapper clientW = (FTPClientWrapper) ftpFileSystem.getClient();
                  clientW.getFtpClient().addProtocolCommandListener(new PrintCommandListener(Util.newPrintWriter(System.out), true));
                  clientW.getFtpClient().syst();
                  clientW.getFtpClient().setFileType(0);
                  clientW.sendOptions("UTF8", "ON");
                  System.out.printf("%s - Files in %s:%n", Instant.now(), remoteDir);
                  final FileObject[] files = remoteFolder.getChildren();
                  for (final FileObject file : files) {
                      final String fileName = file.getName().getBaseName();
                      System.out.println(fileName);
                  }
              }
          } catch (final Exception e) {
              e.printStackTrace();
          }
      }
  }