/*
 * ====================================================================== The
 * Bodington System Software License, Version 1.0 Copyright (c) 2001 The
 * University of Leeds. All rights reserved. Redistribution and use in source
 * and binary forms, with or without modification, are permitted provided that
 * the following conditions are met: 1. Redistributions of source code must
 * retain the above copyright notice, this list of conditions and the following
 * disclaimer. 2. 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. 3. The
 * end-user documentation included with the redistribution, if any, must include
 * the following acknowledgement: "This product includes software developed by
 * the University of Leeds (http://www.bodington.org/)." Alternately, this
 * acknowledgement may appear in the software itself, if and wherever such
 * third-party acknowledgements normally appear. 4. The names "Bodington",
 * "Nathan Bodington", "Bodington System", "Bodington Open Source Project", and
 * "The University of Leeds" must not be used to endorse or promote products
 * derived from this software without prior written permission. For written
 * permission, please contact d.gardner@leeds.ac.uk. 5. The name "Bodington" may
 * not appear in the name of products derived from this software without prior
 * written permission of the University of Leeds. THIS SOFTWARE IS PROVIDED ``AS
 * IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
 * TITLE, THE IMPLIED WARRANTIES OF QUALITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE UNIVERSITY OF LEEDS OR ITS 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.
 * ========================================================= This software was
 * originally created by the University of Leeds and may contain voluntary
 * contributions from others. For more information on the Bodington Open Source
 * Project, please see http://bodington.org/
 * ======================================================================
 */

package org.bodington.servlet.facilities;

import java.io.IOException;
import java.io.PrintWriter;

import org.apache.log4j.Logger; 

import javax.servlet.ServletException;

import org.bodington.server.BuildingServerException;
import org.bodington.server.resources.FeedResource;
import org.bodington.server.resources.NewsFeedResource;
import org.bodington.server.resources.Resource;
import org.bodington.servlet.Request;

public class NewsFeedFacility extends FeedFacility
{
    private static Logger log = Logger.getLogger(NewsFeedFacility.class);
    protected static final String URL_PARAMETER = "newsfeedURL";
    protected static final String FACILITY_NAME = "Newsfeed";

    public NewsFeedFacility() throws BuildingServerException
    {
        //        try
        //        {
        //          TODO: get this working:
        //            createStylesheetTemplate(TRANSFORM_STYLESHEET);
        //        }
        //        catch (JaferException ex)
        //        {
        //            String message = "Error loading XSL stylesheet for NewsFeed
        // resource";
        //            Logger.getLogger("org.bodington.server").severe(message);
        //            throw new BuildingServerException(ex.getMessage(), message);
        //        }
    }

    public Resource newResource()
    {
        return new NewsFeedResource();
    }

    public boolean initResource(Request breq, Resource new_resource)
        throws BuildingServerException
    {
        String url;

        if (!(new_resource instanceof NewsFeedResource))
            throw new BuildingServerException(
                "Technical problem: An incorrect type of resource was created.");

        // Only the URL is set at creation time, other properties are set to the
        // defaults.
        if (breq.getParameter(getURLParameter()) != null
            && breq.getParameter(getURLParameter()).length() > 0)
        {
            url = breq.getParameter(getURLParameter());
            ((FeedResource) new_resource).setURL(url);

            return true;
        }
        return false;
    }
    
    public boolean initResource( Resource original_resource, Resource new_resource )
    throws BuildingServerException {
    	
    	if ( !(new_resource instanceof NewsFeedResource) )
    		throw new BuildingServerException( 
    		"Error: The wrong type of resource was created." );
    	
    	String url;
    	
    	url = ((NewsFeedResource)original_resource).getFeedURL();
    	((NewsFeedResource)new_resource).setFeedURL( url );
    	
    	return true;
    }

    public void insert(Request req, PrintWriter out, String command,
        String insertname) throws ServletException, IOException
    {
        log.debug(" NewsFeedFacility insert()");

        if (!(req.getResource() instanceof NewsFeedResource))
        {
            String message = "Wrong type of resource found, expecting NewsFeed resource";
            log.error(message);
            return;
        }

        NewsFeedResource resource = (NewsFeedResource) req.getResource();

        if (command.equalsIgnoreCase("displayfeed"))
        {
            String html = getFrameDisplay(resource);
            out.print(html);
            return;
        }

        // TODO Do this another way...
        if (command.equalsIgnoreCase("modifyproperties"))
        {
            if (req.getParameter("savesettings") != null) // Save button has
                                                          // been pushed...
            {
                updateDisplayInline(req, resource);
                updateDisplayImage(req, resource);
                updateDisplayTitle(req, resource);
                updateDisplayDescription(req, resource);
                updateDisplayAuthor(req, resource);
                updateAllowTitleLinks(req, resource);
                updateDisplayDate(req, resource);
                updateMaxNumberOfItems(req, resource);
                updateDisplayItemTitles(req, resource);
                updateDisplayItemAuthors(req, resource);
                updateDisplayItemContent(req, resource);
                updateDisplayExcerpt(req, resource);
                updateDisplayItemDate(req, resource);
                updateItemSeparationTag(req, resource);
                try
                {
                    updateURL(req, resource);
                    if (resource.isUnsaved()) resource.save();
                }
                catch (BuildingServerException ex)
                {
                    out.println("Failed to update: "+ ex);
                }
            }
            return;
        }

        if (displayCurrentSettings(command, resource, out)) return;

        super.insert(req, out, command, insertname);
    }

    protected String getURLParameter()
    {
        return URL_PARAMETER;
    }

    protected String getFacilityName()
    {
        return FACILITY_NAME;
    }

}