/*******************************************************************************
 * Copyright (C) 2007 The University of Manchester
 *
 *  Modifications to the initial code base are copyright of their
 *  respective authors, or their employers as appropriate.
 *
 *  This program 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 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
 *  Lesser General Public License for more details.
 *
 *  You should have received a copy of the GNU Lesser General Public
 *  License along with this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
 ******************************************************************************/
package net.sf.taverna.t2.activities.wsdl.xmlsplitter;

import java.io.IOException;
import java.io.StringReader;
import java.util.List;

import net.sf.taverna.t2.visit.VisitReport;
import net.sf.taverna.t2.visit.VisitReport.Status;
import net.sf.taverna.t2.workflowmodel.health.HealthCheck;
import net.sf.taverna.t2.workflowmodel.health.HealthChecker;
import net.sf.taverna.wsdl.parser.TypeDescriptor;
import net.sf.taverna.wsdl.xmlsplitter.XMLSplitterSerialisationHelper;

import org.jdom.Element;
import org.jdom.JDOMException;
import org.jdom.input.SAXBuilder;

public class XMLInputSplitterHealthChecker implements HealthChecker<XMLInputSplitterActivity> {

	public boolean canVisit(Object subject) {
		return subject!=null && subject instanceof XMLInputSplitterActivity;
	}

	public VisitReport visit(XMLInputSplitterActivity activity, List<Object> ancestors) {
		Element element;
		try {
			String wrappedType = activity.getConfiguration().get("wrappedType").textValue();
			element = new SAXBuilder().build(new StringReader(wrappedType)).getRootElement();
		} catch (JDOMException | IOException e) {
			return new VisitReport(HealthCheck.getInstance(), activity, "Error reading wrapped type", HealthCheck.INVALID_CONFIGURATION, Status.SEVERE);
		}
		TypeDescriptor typeDescriptor = XMLSplitterSerialisationHelper.extensionXMLToTypeDescriptor(element);
		if (typeDescriptor==null) {
			return new VisitReport(HealthCheck.getInstance(), activity, "Unknown datatype for port", HealthCheck.NULL_DATATYPE, Status.SEVERE);
		}
		else {
			return new VisitReport(HealthCheck.getInstance(), activity, "Recognized datatype", HealthCheck.NO_PROBLEM, Status.OK);
		}
	}

	public boolean isTimeConsuming() {
		return false;
	}

}