/*
    * 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.geo;
  
  import org.apache.commons.logging.Log;
  import org.apache.commons.logging.LogFactory;
  import org.htmlunit.WebClient;
  import org.htmlunit.WebWindow;
  import org.htmlunit.corejs.javascript.Function;
  import org.htmlunit.html.HtmlPage;
  import org.htmlunit.javascript.HtmlUnitScriptable;
  import org.htmlunit.javascript.JavaScriptEngine;
  import org.htmlunit.javascript.background.BackgroundJavaScriptFactory;
  import org.htmlunit.javascript.background.JavaScriptJob;
  import org.htmlunit.javascript.configuration.JsxClass;
  import org.htmlunit.javascript.configuration.JsxConstructor;
  import org.htmlunit.javascript.configuration.JsxFunction;
  
  /**
   * A JavaScript object for Geolocation.
   *
   * @author Ahmed Ashour
   * @author Ronald Brill
   */
  @JsxClass
  public class Geolocation extends HtmlUnitScriptable {
  
      private static final Log LOG = LogFactory.getLog(Geolocation.class);
  
      private Function successHandler_;
      private Function errorHandler_;
  
      /**
       * Creates an instance.
       */
      @JsxConstructor
      public void jsConstructor() {
          throw JavaScriptEngine.typeErrorIllegalConstructor();
      }
  
      /**
       * Gets the current position.
       * @param successCallback success callback
       * @param errorCallback optional error callback
       * @param options optional options
       */
      @JsxFunction
      public void getCurrentPosition(final Function successCallback, final Function errorCallback,
              final Object options) {
          successHandler_ = successCallback;
          errorHandler_ = errorCallback;
  
          final WebWindow webWindow = getWindow().getWebWindow();
          if (webWindow.getWebClient().getOptions().isGeolocationEnabled()) {
              final JavaScriptJob job = BackgroundJavaScriptFactory.theFactory()
                      .createJavaScriptJob(0, null, () -> doGetPosition());
              webWindow.getJobManager().addJob(job, webWindow.getEnclosedPage());
          }
      }
  
      /**
       * Notifies the callbacks whenever the position changes, till clearWatch() is called.
       * @param successCallback success callback
       * @param errorCallback optional error callback
       * @param options optional options
       * @return the watch id
       */
      @JsxFunction
      public int watchPosition(final Function successCallback, final Object errorCallback,
              final Object options) {
          return 0;
      }
  
      /**
       * Clears the specified watch ID.
       * @param watchId the watch id
       */
      @JsxFunction
      public void clearWatch(final int watchId) {
          // nothing to do
      }
  
      void doGetPosition() {
          final WebWindow ww = getWindow().getWebWindow();
          final WebClient webClient = ww.getWebClient();
  
          final org.htmlunit.WebClientOptions.Geolocation geolocation = webClient.getOptions().getGeolocation();
 
         final GeolocationCoordinates coordinates = new GeolocationCoordinates(
                 geolocation.getLatitude(), geolocation.getLongitude(), geolocation.getAccuracy());
         coordinates.setPrototype(getPrototype(coordinates.getClass()));
 
         final GeolocationPosition position = new GeolocationPosition(coordinates);
         position.setPrototype(getPrototype(position.getClass()));
 
         final JavaScriptEngine jsEngine = (JavaScriptEngine) ww.getWebClient().getJavaScriptEngine();
         jsEngine.callFunction((HtmlPage) ww.getEnclosedPage(), successHandler_, this,
                 getParentScope(), new Object[] {position});
     }
 }