content: /*
   * Copyright (C) 2012-2023 52°North Spatial Information Research GmbH
   *
   * This program is free software; you can redistribute it and/or modify it
   * under the terms of the GNU General Public License version 2 as published
   * by the Free Software Foundation.
   *
   * If the program is linked with libraries which are licensed under one of
   * the following licenses, the combination of the program with the linked
   * library is not considered a "derivative work" of the program:
   *
   *     - Apache License, version 2.0
   *     - Apache Software License, version 1.0
   *     - GNU Lesser General Public License, version 3
   *     - Mozilla Public License, versions 1.0, 1.1 and 2.0
   *     - Common Development and Distribution License (CDDL), version 1.0
   *
   * Therefore the distribution of the program linked with libraries licensed
   * under the aforementioned licenses, is permitted by the copyright holders
   * if the distribution is compliant with both the GNU General Public
   * License version 2 and the aforementioned licenses.
   *
   * This program 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.
   */
  package org.n52.sos.web.admin;
  
  import java.io.File;
  import java.io.FileFilter;
  import java.util.ArrayList;
  import java.util.Collections;
  import java.util.List;
  
  import org.n52.sos.web.common.AbstractController;
  import org.n52.sos.web.common.ControllerConstants;
  import org.springframework.stereotype.Controller;
  import org.springframework.web.bind.annotation.RequestMapping;
  import org.springframework.web.servlet.ModelAndView;
  
  /**
   * @author <a href="mailto:c.autermann@52north.org">Christian Autermann</a>
   * @since 4.0.0
   */
  @Controller
  public class AdminLibraryListingController extends AbstractController {
      private static final FileFilter FILE_FILTER = new FileFilter() {
          @Override
          public boolean accept(File pathname) {
              return pathname != null && pathname.isFile();
          }
      };
  
      @RequestMapping(ControllerConstants.Paths.ADMIN_LIBRARY_LIST)
      public ModelAndView view() {
          List<String> libs = Collections.emptyList();
          File lib = new File(getContext().getRealPath("WEB-INF/lib"));
          if (lib.exists() && lib.isDirectory() && lib.canRead()) {
              final File[] listFiles = lib.listFiles(FILE_FILTER);
              if (listFiles != null && listFiles.length > 0) {
                  libs = new ArrayList<String>(listFiles.length);
                  for (File f : listFiles) {
                      libs.add(f.getName());
                  }
              }
          }
          Collections.sort(libs);
          return new ModelAndView(ControllerConstants.Views.ADMIN_LIBRARY_LIST,
                  ControllerConstants.LIBRARIES_MODEL_ATTRIBUTE, libs);
      }
  
  }
  