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.common;
  
  import java.io.File;
  import java.nio.file.Paths;
  import java.util.Collection;
  import java.util.Map;
  import java.util.Map.Entry;
  
  import javax.servlet.ServletContext;
  
  import com.fasterxml.jackson.databind.node.ArrayNode;
  import org.n52.iceland.service.DatabaseSettingsHandler;
  import org.n52.janmayen.Json;
  import org.n52.sos.ds.HibernateDatasourceConstants;
  import org.springframework.core.env.AbstractEnvironment;
  
  import com.fasterxml.jackson.databind.node.ObjectNode;
  import org.springframework.web.util.HtmlUtils;
  
  /**
   * @since 4.0.0
   *
   */
  public final class JstlFunctions {
      public static final boolean HAS_INSTALLER = hasClass("org.n52.sos.web.install.InstallIndexController");
      public static final boolean HAS_CLIENT = hasClass("org.n52.sos.web.client.ClientController");
      public static final boolean HAS_ADMIN = hasClass("org.n52.sos.web.admin.AdminIndexController");
  
      private JstlFunctions() {
      }
  
      public static boolean configurated(ServletContext ctx) {
          DatabaseSettingsHandler handler = new DatabaseSettingsHandler();
          handler.setServletContext(ctx);
          return handler.exists();
      }
  
      public static boolean hasClient() {
          return HAS_CLIENT;
      }
  
      public static boolean hasInstaller() {
          return HAS_INSTALLER;
      }
  
      public static boolean hasAdministrator() {
          return HAS_ADMIN;
      }
  
      public static boolean hasClass(String c) {
          try {
              Class.forName(c);
          } catch (ClassNotFoundException e) {
              return false;
          }
          return true;
      }
  
      public static boolean supportsEReporting(String c, ServletContext ctx) {
          return hasClass(c) ? checkProfile(ctx, HibernateDatasourceConstants.DatabaseConcept.EREPORTING.name()
                  .toLowerCase()) : false;
      }
  
      private static boolean checkProfile(ServletContext ctx, String profile) {
          String initParameter = ctx.getInitParameter(AbstractEnvironment.ACTIVE_PROFILES_PROPERTY_NAME);
          return initParameter != null && !initParameter.isEmpty() && initParameter.contains(profile);
      }
  
      /**
       * Check if the view in exists.
       *
       * @param ctx
       *            {@link ServletContext} to get real path
       * @param path
       *            View path and name
       * @return <code>true</code>, if view exists
       */
      public static boolean viewExists(ServletContext ctx, String path) {
          return fileExists(ctx, "/WEB-INF/views/" + path);
      }
  
      /**
       * Check if the {@link File} in '/static/' exists.
       *
       * @param ctx
       *            {@link ServletContext} to get real path
       * @param path
       *            File path and name in '/static/'
       * @return <code>true</code>, if file exists
       */
      public static boolean staticExtensionExists(ServletContext ctx, String path) {
          return fileExists(ctx, "/static/" + path);
      }
  
      /**
       * Check if the {@link File} in '/static/doc/' exists.
       *
       * @param ctx
       *            {@link ServletContext} to get real path
       * @param path
       *            File path and name in '/static/doc/'
       * @return <code>true</code>, if file exists
       */
      public static boolean documentExtensionExists(ServletContext ctx, String path) {
          return fileExists(ctx, "/static/doc/" + path);
      }
  
      /**
       * Check if the {@link File} exists.
       *
       * @param ctx
       *            {@link ServletContext} to get real path
       * @param path
       *            File path and name
       * @return <code>true</code>, if file exists
       */
      public static boolean fileExists(ServletContext ctx, String path) {
          return ctx.getRealPath(path) != null ? new File(ctx.getRealPath(path)).exists()
                  : Paths.get(ctx.getRealPath("/"), path).toFile().exists();
      }
  
      public static String mapToJson(Map<?, ?> map) {
          ObjectNode node = Json.nodeFactory().objectNode();
          for (Entry<?, ?> entry : map.entrySet()) {
              node.put(entry.getKey().toString(), String.valueOf(entry.getValue()));
          }
          return HtmlUtils.htmlEscape(Json.print(node));
      }
  
      public static String collectionToJson(Collection<?> obj) {
          ArrayNode node = Json.nodeFactory().arrayNode(obj.size());
          obj.forEach(c -> node.add(c.toString()));
          return HtmlUtils.htmlEscape(Json.print(node));
      }
  
      public static String htmlEscape(String json) {
          return HtmlUtils.htmlEscape(json);
      }
  
      public static boolean supportsI18N() {
          return false;
          // return I18NDAORepository.getInstance().isSupported();
      }
  }
  