/*
Wotonomy: OpenStep design patterns for pure Java applications.
Copyright (C) 2000 Blacksmith, Inc.

This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.

This library 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.  See the GNU
Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public
License along with this library; if not, see http://www.gnu.org
*/

package net.wotonomy.web;

import java.util.Enumeration;

import net.wotonomy.foundation.NSData;
import net.wotonomy.foundation.NSMutableDictionary;

/**
* An implementation of WORequestHandler that  
* retrieves resources from the deployed application.
*
* @author michael@mpowers.net
* @author $Author: cgruber $
* @version $Revision: 905 $
*/
public class WOResourceRequestHandler
	extends WORequestHandler
{
    private NSMutableDictionary resourceCache;
    private WOResourceManager resourceManager;
    
    public WOResourceRequestHandler()
    {
        //TODO: should probably have some kind of limit on the cache
        resourceCache = new NSMutableDictionary();
        resourceManager = WOApplication.application().resourceManager();
    }
    
    public WOResponse handleRequest( WORequest aRequest )
    {
        WOResponse response = new WOResponse();
        
        StringBuffer buf = new StringBuffer();
        
        //TODO: this is just to get things working...
        String framework = null;
        Enumeration e = aRequest.requestHandlerPathArray().objectEnumerator();
        if ( e.hasMoreElements() )
        {
            framework = e.nextElement().toString();
            if ( framework.equals( "application" ) )
            {
                buf.append('/').append( framework );
                framework = null;
            }
        }
        if ( e.hasMoreElements() )
        {
            buf.append( e.nextElement() );
        }
        while ( e.hasMoreElements() )
        {
            buf.append('/').append( e.nextElement() );
        }
        
        String resource;
        if ( buf.length() > 0 )
        {
            resource = buf.toString();
            byte[] data = resourceManager.bytesForResourceNamed(
                resource, framework, aRequest.browserLanguages() );
            if ( data != null )
            {
                response.setHeader(
                    resourceManager.contentTypeForResourceNamed( resource ),
                    "Content-Type" );
                response.setContent( new NSData( data ) );
                return response;
            }
        }
        response.setStatus( 404 ); // not found
        return response;
    }
}

/*
 * $Log$
 * Revision 1.2  2006/02/19 01:44:02  cgruber
 * Add xmlrpc files
 * Remove jclark and replace with dom4j and javax.xml.sax stuff
 * Re-work dependencies and imports so it all compiles.
 *
 * Revision 1.1  2006/02/16 13:22:22  cgruber
 * Check in all sources in eclipse-friendly maven-enabled packages.
 *
 * Revision 1.6  2003/08/07 00:15:15  chochos
 * general cleanup (mostly removing unused imports)
 *
 * Revision 1.5  2003/01/27 15:08:00  mpowers
 * Implemented WOResourceManager, using java resources for now.
 *
 * Revision 1.4  2003/01/22 23:01:36  mpowers
 * Better handling for request handler path.
 * Better support for resources with absolute path.
 *
 * Revision 1.3  2003/01/20 16:18:22  mpowers
 * Fixed class loading issues with resource retrieval.
 *
 * Revision 1.2  2003/01/17 20:58:20  mpowers
 * Fixed up WOHyperlink.
 *
 *
 */