/*
 * 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.axis2.dispatchers;

import org.apache.axis2.AxisFault;
import org.apache.axis2.addressing.EndpointReference;
import org.apache.axis2.context.ConfigurationContext;
import org.apache.axis2.context.MessageContext;
import org.apache.axis2.description.AxisService;
import org.apache.axis2.description.HandlerDescription;
import org.apache.axis2.description.WSDL2Constants;
import org.apache.axis2.engine.AxisConfiguration;
import org.apache.axis2.util.LoggingControl;
import org.apache.axis2.util.Utils;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

import java.util.Map;

public class RequestURIBasedServiceDispatcher extends AbstractServiceDispatcher {

    public static final String NAME = "RequestURIBasedServiceDispatcher";
    private static final Log log = LogFactory.getLog(RequestURIBasedServiceDispatcher.class);

    /*
     *  (non-Javadoc)
     * @see org.apache.axis2.engine.AbstractDispatcher#findService(org.apache.axis2.context.MessageContext)
     */
    public AxisService findService(MessageContext messageContext) throws AxisFault {
        EndpointReference toEPR = messageContext.getTo();
        if (toEPR != null) {
            if (LoggingControl.debugLoggingAllowed && log.isDebugEnabled()) {
                log.debug(messageContext.getLogIDString() +
                        " Checking for Service using target endpoint address : " +
                        toEPR.getAddress());
            }
            String filePart = toEPR.getAddress();
            //REVIEW: (nagy) Parsing the RequestURI will also give us the operationName if present, so we could conceivably store it in the MessageContext, but doing so and retrieving it is probably no faster than simply reparsing the URI
            ConfigurationContext configurationContext = messageContext.getConfigurationContext();
            String[] values = Utils.parseRequestURLForServiceAndOperation(filePart,
                                                                          messageContext
                                                                                  .getConfigurationContext().getServiceContextPath());

            if ((values.length >= 1) && (values[0] != null)) {
            	
            	AxisConfiguration registry =
            		configurationContext.getAxisConfiguration();

            	AxisService axisService = registry.getService(values[0]);

            	// If the axisService is not null we get the binding that the request came to add
            	// add it as a property to the messageContext
            	if (axisService != null) {
            		Map endpoints = axisService.getEndpoints();
            		if (endpoints != null) {
            			if (endpoints.size() == 1) {
            				messageContext.setProperty(WSDL2Constants.ENDPOINT_LOCAL_NAME,
            						endpoints.get(
            								axisService.getEndpointName()));
            			} else {
            				String endpointName = values[0].substring(values[0].indexOf(".") + 1);
            				messageContext.setProperty(WSDL2Constants.ENDPOINT_LOCAL_NAME,
            						endpoints.get(endpointName));
            			}
            		}
            	}

            	return axisService;
            } else {
                if (LoggingControl.debugLoggingAllowed && log.isDebugEnabled()) {
                    log.debug(messageContext.getLogIDString() +
                            " Attempted to check for Service using target endpoint URI, but the service fragment was missing");
                }
                return null;
            }
        } else {
            if (LoggingControl.debugLoggingAllowed && log.isDebugEnabled()) {
                log.debug(messageContext.getLogIDString() +
                        " Attempted to check for Service using null target endpoint URI");
            }
            return null;
        }
    }

    public void initDispatcher() {
        init(new HandlerDescription(NAME));
    }
}
