/*
    * Copyright (c) 2002-2025 Gargoyle Software Inc.
    *
    * Licensed 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
    * https://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.htmlunit.javascript.host.performance;
  
  import org.apache.commons.logging.Log;
  import org.apache.commons.logging.LogFactory;
  import org.htmlunit.corejs.javascript.Context;
  import org.htmlunit.corejs.javascript.json.JsonParser;
  import org.htmlunit.corejs.javascript.json.JsonParser.ParseException;
  import org.htmlunit.javascript.HtmlUnitScriptable;
  import org.htmlunit.javascript.configuration.JsxClass;
  import org.htmlunit.javascript.configuration.JsxConstant;
  import org.htmlunit.javascript.configuration.JsxConstructor;
  import org.htmlunit.javascript.configuration.JsxFunction;
  import org.htmlunit.javascript.configuration.JsxGetter;
  
  /**
   * A JavaScript object for {@code PerformanceNavigation}.
   *
   * @author Ahmed Ashour
   * @author Ronald Brill
   */
  @JsxClass
  public class PerformanceNavigation extends HtmlUnitScriptable {
  
      private static final Log LOG = LogFactory.getLog(PerformanceNavigation.class);
  
      /** Navigate. */
      @JsxConstant
      public static final int TYPE_NAVIGATE = 0;
  
      /** Reload. */
      @JsxConstant
      public static final int TYPE_RELOAD = 1;
  
      /** Back forward. */
      @JsxConstant
      public static final int TYPE_BACK_FORWARD = 2;
  
      /** Reserved. */
      @JsxConstant
      public static final int TYPE_RESERVED = 255;
  
      /**
       * JavaScript constructor.
       */
      @JsxConstructor
      public void jsConstructor() {
          // nothing to do
      }
  
      /**
       * Returns the {@code type} property.
       * @return the {@code type} property
       */
      @JsxGetter
      public int getType() {
          return TYPE_NAVIGATE;
      }
  
      /**
       * Returns the {@code redirectCount} property.
       * @return the {@code redirectCount} property
       */
      @JsxGetter
      public int getRedirectCount() {
          return 0;
      }
  
      /**
       * The {@code toJSON} function.
       * @return the {@code toJSON} object
       */
      @JsxFunction
      public Object toJSON() {
          final String jsonString = new StringBuilder()
                  .append("{\"type\":")
                  .append(getType())
                  .append(", \"redirectCount\":")
                  .append(getRedirectCount())
                  .append('}').toString();
          try {
              return new JsonParser(Context.getCurrentContext(), getParentScope()).parseValue(jsonString);
          }
          catch (final ParseException e) {
              if (LOG.isWarnEnabled()) {
                  LOG.warn("Failed parsingJSON '" + jsonString + "'", e);
             }
         }
         return null;
     }
 
 }