/*

  * 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.web.action;

 import net.sourceforge.pebble.Constants;

 import net.sourceforge.pebble.domain.*;

 import net.sourceforge.pebble.util.SecurityUtils;

 import net.sourceforge.pebble.util.Pageable;

 import net.sourceforge.pebble.web.view.RedirectView;

 import net.sourceforge.pebble.web.view.View;

 import net.sourceforge.pebble.web.view.impl.BlogEntriesView;

 import javax.servlet.ServletException;

 import javax.servlet.http.HttpServletRequest;

 import javax.servlet.http.HttpServletResponse;

 import java.util.List;

 /**

  * Views blog entries page by page. The page size is the same as the "number of

  * blog entries shown on the home page".

  *

  * @author    Simon Brown

  */

 public class ViewBlogEntriesByPageAction extends Action {

   /**

    * Peforms the processing associated with this action.

    *

    * @param request     the HttpServletRequest instance.

    * @param response    the HttpServletResponse instance.

    * @return            the next View

    */

   public View process(HttpServletRequest request,

                       HttpServletResponse response)

       throws ServletException {

     AbstractBlog abstractBlog = (AbstractBlog)getModel().get(Constants.BLOG_KEY);

     if (abstractBlog instanceof MultiBlog) {

       List publicBlogs = BlogManager.getInstance().getPublicBlogs();

       if (publicBlogs.size() == 1) {

         Blog blog = (Blog)publicBlogs.get(0);

         return new RedirectView(blog.getUrl());

       } else {

         getModel().put(Constants.BLOG_ENTRIES, abstractBlog.getRecentBlogEntries());

         return new BlogEntriesView();

       }

     } else {

       Blog blog = (Blog)abstractBlog;

       int page = 1;

       try {

         page = Integer.parseInt(request.getParameter("page"));

       } catch (NumberFormatException nfe) {

         page = 1;

       }

       boolean publishedOnly = true;

       if (SecurityUtils.isUserAuthorisedForBlog(blog)) {

         publishedOnly = false;

       }

       getModel().put(Constants.MONTHLY_BLOG, blog.getBlogForThisMonth());

       getModel().put("displayMode", "page");

       getModel().put("page", page);

       Pageable<String> pageable;

       if (publishedOnly) {

         pageable = new Pageable<String>(blog.getBlogEntryIndex().getPublishedBlogEntries());

       } else {

         pageable = new Pageable<String>(blog.getBlogEntryIndex().getBlogEntries());

       }

       pageable.setPageSize(blog.getRecentBlogEntriesOnHomePage());

       pageable.setPage(page);

       List<String> blogEntryIds = pageable.getListForPage();

       List<BlogEntry> blogEntries = blog.getBlogEntries(blogEntryIds);

       getModel().put(Constants.BLOG_ENTRIES, blogEntries);

       getModel().put("pageable", pageable);

       return new BlogEntriesView();

     }

   }

 }