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/*
 *
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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 org.apache.airavata.wsmg.client;

import org.apache.airavata.wsmg.commons.WsmgCommonConstants;
import org.apache.airavata.wsmg.commons.NameSpaceConstants;
import org.apache.axiom.om.OMAbstractFactory;
import org.apache.axiom.om.OMElement;
import org.apache.axiom.om.OMFactory;
import org.apache.axiom.om.util.UUIDGenerator;
import org.apache.axiom.soap.SOAPFactory;
import org.apache.axiom.soap.SOAPHeaderBlock;
import org.apache.axis2.AxisFault;
import org.apache.axis2.addressing.EndpointReference;
import org.apache.axis2.client.ServiceClient;

/**
 * This stub is NOT multi-thread safe!
 */
public class WidgetStub extends WsrfResourceStub {

    private final static OMFactory factory = OMAbstractFactory.getOMFactory();
    private final static SOAPFactory soapfactory = OMAbstractFactory.getSOAP11Factory();

    public WidgetStub(EndpointReference widgetEpr, long timeout) {
        super(widgetEpr, timeout);
    }

    public void generateNotification() throws AxisFault {

        OMElement message = factory.createOMElement("generateNotification", NameSpaceConstants.WIDGET_NS);

        ServiceClient client = createServiceClient(message);
        client.sendReceive(message);
        client.cleanupTransport();

    }

    private ServiceClient createServiceClient(OMElement message) throws AxisFault {

        ServiceClient client = new ServiceClient();

        String uuid = UUIDGenerator.getUUID();
        if (client.getAxisConfiguration().getModule(WsmgCommonConstants.AXIS_MODULE_NAME_ADDRESSING) != null) {
            client.engageModule(WsmgCommonConstants.AXIS_MODULE_NAME_ADDRESSING);
        } else {

            SOAPHeaderBlock msgId = soapfactory.createSOAPHeaderBlock("MessageID", NameSpaceConstants.WSA_NS);
            msgId.setText(uuid);

            SOAPHeaderBlock to = soapfactory.createSOAPHeaderBlock("To", NameSpaceConstants.WSA_NS);
            to.setText(opts.getTo().getAddress());

            SOAPHeaderBlock action = soapfactory.createSOAPHeaderBlock("Action", NameSpaceConstants.WSA_NS);
            action.setText(message.getNamespace().getNamespaceURI() + "/" + message.getLocalName());

            client.addHeader(action);
            client.addHeader(msgId);
            client.addHeader(to);
        }
        opts.setProperty(org.apache.axis2.transport.http.HTTPConstants.CHUNKED, Boolean.FALSE);
        opts.setMessageId(uuid);
        opts.setAction(message.getNamespace().getNamespaceURI() + "/generateEvent");
        opts.setTimeOutInMilliSeconds(getTimeoutInMilliSeconds());
        client.setOptions(opts);
        return client;
    }

}