/*
 * File: DescribeUserHandler.java
 *
 * Copyright 2007 Macquarie E-Learning Centre Of Excellence
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package melcoe.fedora.pep.ws.operations;

import javax.xml.soap.SOAPElement;
import javax.xml.soap.SOAPEnvelope;
import javax.xml.soap.SOAPHeader;
import javax.xml.soap.SOAPHeaderElement;

import melcoe.fedora.pep.PEPException;

import org.apache.axis.Message;
import org.apache.axis.MessageContext;
import org.apache.log4j.Logger;

import com.sun.xacml.ctx.RequestCtx;

/**
 * @author nishen@melcoe.mq.edu.au
 */
public class DescribeUserHandler
        extends AbstractOperationHandler {

    private static Logger log =
            Logger.getLogger(DescribeUserHandler.class.getName());

    public DescribeUserHandler()
            throws PEPException {
        super();
    }

    public RequestCtx handleResponse(MessageContext context)
            throws OperationHandlerException {
        try {
            String[] fedoraRoles = getUserRoles(context);
            if (fedoraRoles == null || fedoraRoles.length == 0) {
                return null;
            }

            Message message = context.getCurrentMessage();
            SOAPEnvelope envelope = message.getSOAPEnvelope();
            SOAPHeader header = envelope.getHeader();

            SOAPHeaderElement roles =
                    header.addHeaderElement(envelope
                            .createName("roles",
                                        "drama",
                                        "http://drama.ramp.org.au/"));
            for (String fedoraRole : fedoraRoles) {
                SOAPElement role =
                        roles.addChildElement(envelope
                                .createName("role",
                                            "drama",
                                            "http://drama.ramp.org.au/"));
                role.addTextNode(fedoraRole);
            }
        } catch (Exception e) {
            log.error("Error setting roles for user: " + e.getMessage(), e);
        }

        return null;
    }

    public RequestCtx handleRequest(MessageContext context)
            throws OperationHandlerException {
        return null;
    }
}