/*
 * Copyright (C) 2003-2009 eXo Platform SAS.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Affero General Public License
 * as published by the Free Software Foundation; either version 3
 * of the License, or (at your option) any later version.
 *
 * This program 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, see<http://www.gnu.org/licenses/>.
 */
package org.exoplatform.wcm.extensions.ui;

import java.util.List;
import java.util.Map;

import javax.jcr.Node;

import org.exoplatform.container.ExoContainerContext;
import org.exoplatform.portal.webui.util.Util;
import org.exoplatform.services.wcm.extensions.publication.PublicationManager;
import org.exoplatform.services.wcm.extensions.publication.lifecycle.impl.LifecyclesConfig.Lifecycle;
import org.exoplatform.webui.ext.filter.UIExtensionFilter;
import org.exoplatform.webui.ext.filter.UIExtensionFilterType;

/**
 * Created by The eXo Platform SAS
 * Author : eXoPlatform
 *          nicolas.filotto@exoplatform.com
 * 2 juillet 2009  
 */
public class CanValidateFilter implements UIExtensionFilter {

	/**
	 * This method checks if the current node is of the right type
	 */
	public boolean accept(Map<String, Object> context) throws Exception {
		// Retrieve the current node from the context
	    Node currentNode = (Node) context.get(Node.class.getName());
	    if (currentNode.hasProperty("publication:currentState") && currentNode.hasProperty("publication:lifecycle")) {
	    	String currentState = currentNode.getProperty("publication:currentState").getString();
	    	
	    	if ("draft".equals(currentState)) {
	    		String userId;
	    		try {
	    			userId = Util.getPortalRequestContext().getRemoteUser();
	    		} catch (Exception e) {
	    			userId = currentNode.getSession().getUserID();
	    		}
	    		
	    		String nodeLifecycle = currentNode.getProperty("publication:lifecycle").getString();
	    		
	    		PublicationManager publicationManager = (PublicationManager)ExoContainerContext.getCurrentContainer().getComponentInstanceOfType(PublicationManager.class);
	    		List<Lifecycle> lifecycles = publicationManager.getLifecyclesFromUser(userId, "pending");
	    		
	    		for (Lifecycle lifecycle:lifecycles) {
	    			if (nodeLifecycle.equals(lifecycle.getName())) {
	    				return true;
	    			}
	    		}
	    		
	    	}
	    }
		return false;
	}

    /**
	 * This is the type of the filter
	 */
	public UIExtensionFilterType getType() {
		return UIExtensionFilterType.MANDATORY;
	}

	/**
	 * This is called when the filter has failed
	 */
	public void onDeny(Map<String, Object> context) throws Exception {
		System.out.println("You can add a category in a exo:taxonomy node only.");
	}
}
