/**
    * Logback: the reliable, generic, fast and flexible logging framework.
    * Copyright (C) 1999-2015, QOS.ch. All rights reserved.
    *
    * This program and the accompanying materials are dual-licensed under
    * either the terms of the Eclipse Public License v1.0 as published by
    * the Eclipse Foundation
    *
    *   or (per the licensee's choosing)
   *
   * under the terms of the GNU Lesser General Public License version 2.1
   * as published by the Free Software Foundation.
   */
  package ch.qos.logback.core.joran.action;
  
  import java.io.File;
  import java.io.IOException;
  import java.io.InputStream;
  import java.net.MalformedURLException;
  import java.net.URI;
  import java.net.URL;
  import java.util.List;
  
  import org.xml.sax.Attributes;
  
  import ch.qos.logback.core.joran.event.SaxEvent;
  import ch.qos.logback.core.joran.event.SaxEventRecorder;
  import ch.qos.logback.core.joran.spi.ActionException;
  import ch.qos.logback.core.joran.spi.JoranException;
  import ch.qos.logback.core.joran.spi.SaxEventInterpretationContext;
  import ch.qos.logback.core.joran.util.ConfigurationWatchListUtil;
  import ch.qos.logback.core.model.IncludeModel;
  import ch.qos.logback.core.model.Model;
  import ch.qos.logback.core.util.Loader;
  import ch.qos.logback.core.util.OptionHelper;
  
  import static ch.qos.logback.core.joran.JoranConstants.INCLUDED_TAG;
  
  /**
   * 
   * @author ceki
   *
   */
  public class IncludeAction extends Action {
  
      private static final String FILE_ATTR = "file";
      private static final String URL_ATTR = "url";
      private static final String RESOURCE_ATTR = "resource";
      private static final String OPTIONAL_ATTR = "optional";
  
      Model parentModel;
      IncludeModel includeModel;
      boolean inError = false;
      
      @Override
      public void begin(SaxEventInterpretationContext seic, String tagName, Attributes attributes) throws ActionException {
  
          String optionalStr = attributes.getValue(OPTIONAL_ATTR);
  
          this.includeModel = new IncludeModel();
          this.includeModel.setOptional(optionalStr);
          fillInIncludeModelAttributes(includeModel, tagName, attributes);
          if (!seic.isModelStackEmpty()) {
              parentModel = seic.peekModel();
          }
          final int lineNumber = getLineNumber(seic);
          this.includeModel.setLineNumber(lineNumber);
          seic.pushModel(this.includeModel);
      }
  
      private void fillInIncludeModelAttributes(IncludeModel includeModel, String tagName, Attributes attributes) {
          this.includeModel.setTag(tagName);
          String fileAttribute = attributes.getValue(FILE_ATTR);
          String urlAttribute = attributes.getValue(URL_ATTR);
          String resourceAttribute = attributes.getValue(RESOURCE_ATTR);
  
          this.includeModel.setFile(fileAttribute);
          this.includeModel.setUrl(urlAttribute);
          this.includeModel.setResource(resourceAttribute);
      }
  
  
      @Override
      public void end(SaxEventInterpretationContext seic, String name) throws ActionException {
          
          if(inError)
              return;
          
          Model m = seic.peekModel();
  
          if (m != includeModel) {
              addWarn("The object at the of the stack is not the model [" + includeModel.idString()
                      + "] pushed earlier.");
              addWarn("This is wholly unexpected.");
          }
  
          // do not pop nor add to parent if there is no parent
          if (parentModel != null) {
              parentModel.addSubModel(includeModel);
             seic.popModel();
         }
     }
 }