/*

  * Copyright (c) 2003-2011, Simon Brown

  * All rights reserved.

  *

  * Redistribution and use in source and binary forms, with or without

  * modification, are permitted provided that the following conditions are met:

  *

  *   - Redistributions of source code must retain the above copyright

  *     notice, this list of conditions and the following disclaimer.

  *

  *   - Redistributions in binary form must reproduce the above copyright

  *     notice, this list of conditions and the following disclaimer in

  *     the documentation and/or other materials provided with the

  *     distribution.

  *

  *   - Neither the name of Pebble nor the names of its contributors may

  *     be used to endorse or promote products derived from this software

  *     without specific prior written permission.

  *

  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"

  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE

  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE

  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR

  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF

  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS

  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN

  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)

  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE

  * POSSIBILITY OF SUCH DAMAGE.

  */

 package net.sourceforge.pebble.openid;

 import net.sourceforge.pebble.Constants;

 import net.sourceforge.pebble.api.decorator.PageDecorator;

 import net.sourceforge.pebble.api.decorator.PageDecoratorContext;

 import net.sourceforge.pebble.domain.AbstractBlog;

 import net.sourceforge.pebble.domain.Blog;

 import javax.servlet.jsp.JspWriter;

 import java.io.IOException;

 /**

  * Provides support for Facebook OpenID operations

  *

  * @author James Roper

  */

 public class FacebookOpenIdSupportDecorator implements PageDecorator {

   public static final String RENDER_FACEBOOK_SUPPORT_KEY = "renderFacebookSupport";

   private static final String FACEBOOK_APP_ID_KEY = "facebook.app.id";

   public void decorateHead(JspWriter out, PageDecoratorContext pageDecoratorContext) throws IOException {

   }

   public void decorateHeader(JspWriter out, PageDecoratorContext pageDecoratorContext) throws IOException {

   }

   public void decorateFooter(JspWriter out, PageDecoratorContext pageDecoratorContext) throws IOException {

     Boolean renderFacebookSupport = (Boolean) pageDecoratorContext.getRequest().getAttribute(RENDER_FACEBOOK_SUPPORT_KEY);

     if (renderFacebookSupport != null && renderFacebookSupport) {

       // Find out the app ID

       AbstractBlog abstractBlog = (AbstractBlog) pageDecoratorContext.getRequest().getAttribute(Constants.BLOG_KEY);

       if (abstractBlog instanceof Blog) {

         String appId = ((Blog) abstractBlog).getPluginProperties().getProperty(FACEBOOK_APP_ID_KEY);

         if (appId != null) {

           out.append("<div id=\"fb-root\"></div>\n" +

                   "<script src=\"http://connect.facebook.net/en_US/all.js\"></script>\n" +

                   "<script>\n" +

                   "FB.init({appId: '").append(appId).append("', status: false, cookie: true, xfbml: true, channelUrl: '")

                   .append(abstractBlog.getUrl()).append("facebook_channel.html'});\n" +

                   "</script>");

         } else {

           // Probably should warn that you need an APP id....

         }

       }

     }

   }

 }