/*
 * Copyright (c) 1998-2011 Caucho Technology -- all rights reserved
 *
 * This file is part of Resin(R) Open Source
 *
 * Each copy or derived work must preserve the copyright notice and this
 * notice unmodified.
 *
 * Resin Open Source is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * Resin Open Source 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, or any warranty
 * of NON-INFRINGEMENT.  See the GNU General Public License for more
 * details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Resin Open Source; if not, write to the
 *
 *   Free Software Foundation, Inc.
 *   59 Temple Place, Suite 330
 *   Boston, MA 02111-1307  USA
 *
 * @author Emil Ong
 */

package com.caucho.xtpdoc;

import javax.annotation.PostConstruct;
import javax.servlet.ServletContext;
import javax.xml.stream.XMLStreamException;
import javax.xml.stream.XMLStreamWriter;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.logging.Level;
import java.util.logging.Logger;

import com.caucho.config.Config;
import com.caucho.util.L10N;
import com.caucho.vfs.Path;
import com.caucho.vfs.Vfs;

/**
 * Loads the reference.xtp document alongside the topic document and outputs
 * only the references linked in the topic document.
 **/
public class ReferenceDocument extends Document {
  private static Logger log = 
    Logger.getLogger(ReferenceDocument.class.getName());
  private static L10N L = new L10N(ReferenceDocument.class);

  private final HashMap<String,Defun> _defuns = new HashMap<String,Defun>();

  public ReferenceDocument(Path documentPath, String contextPath)
  {
    super(documentPath, contextPath);
  }

  public ReferenceDocument(ServletContext webApp,
                           Path documentPath,
                           String contextPath,
                           String uri,
                           String encoding)
  {
    super(webApp, documentPath, contextPath, uri, encoding);
  }

  @Override
  ReferenceDocument getReferenceDocument()
  {
    return this;
  }

  @Override
  public Body createBody()
  {
    return new ReferenceBody(this);
  }

  public Defun getDefun(String ref)
  {
    // XXX implement parent:child lookup
    return _defuns.get(ref);
  }

  private class ReferenceBody extends Body {
    public ReferenceBody(Document document) 
    {
      super(document);
    }

    @Override
    public Defun createDefun()
    {
      Defun defun = new ReferenceDefun(getDocument());
      addItem(defun);

      return defun;
    }
  }

  private class ReferenceDefun extends Defun {
    public ReferenceDefun(Document document)
    {
      super(document);
    }

    @PostConstruct
    public void init()
    {
      Defun oldDefun = _defuns.get(getName());

      if (oldDefun != null) {
        _defuns.remove(getName());

        if (oldDefun.getParents() != null)
          for (String parent : oldDefun.getParents())
            _defuns.put(parent + ":" + getName(), oldDefun);

        if (getParents() != null)
          for (String parent : getParents())
            _defuns.put(parent + ":" + getName(), this);
      }
      else 
        _defuns.put(getName(), this);
    }
  }
}