/****************************************************************
 * 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.james.smtpserver;

import org.apache.avalon.framework.logger.AbstractLogEnabled;
import org.apache.avalon.framework.configuration.Configuration;
import org.apache.avalon.framework.configuration.Configurable;
import org.apache.avalon.framework.configuration.ConfigurationException;
import javax.mail.internet.MimeMessage;


/**
  * Adds the header to the message
  */
public class SetMimeHeaderHandler
    extends AbstractLogEnabled
    implements MessageHandler, Configurable {

    /**
     * The header name and value that needs to be added
     */
    private String headerName;
    private String headerValue;

    /**
     * @see org.apache.avalon.framework.configuration.Configurable#configure(Configuration)
     */
    public void configure(Configuration handlerConfiguration) throws ConfigurationException {

        Configuration configuration = handlerConfiguration.getChild("headername", false);
        if(configuration != null) {
            setHeaderName(configuration.getValue());
        }

        configuration = handlerConfiguration.getChild("headervalue", false);
        if(configuration != null) {
            setHeaderValue(configuration.getValue());
        }
    }
    
    /**
     * Set the header name
     * 
     * @param headerName String which represent the header name
     */
    public void setHeaderName(String headerName) {
        this.headerName = headerName;
    }
    
    /**
     * Set the header value
     * 
     * @param headerValue String wich represetn the header value
     */
    public void setHeaderValue(String headerValue) {
        this.headerValue = headerValue;
    }

    /**
     * Adds header to the message
     * @see org.apache.james.smtpserver#onMessage(SMTPSession)
     */
    public void onMessage(SMTPSession session) {
        try {
            MimeMessage message = session.getMail().getMessage ();

            //Set the header name and value (supplied at init time).
            if(headerName != null) {
                message.setHeader(headerName, headerValue);
                message.saveChanges();
            }

        } catch (javax.mail.MessagingException me) {
            getLogger().error(me.getMessage());
        }
    }



}