/****************************************************************
 * 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.jsieve.utils;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;

import javax.mail.internet.MimeMessage;

import org.apache.jsieve.mail.SieveMailException;
import org.apache.jsieve.mail.optional.EnvelopeAccessors;

/**
 * <p>
 * Class SieveEnvelopeMailAdapter extends class SieveMailAdapter, a mock
 * implementation of a MailAdapter, to add support for EnvelopeAccessors.
 * <p>
 * 
 * <p>
 * As the Envelope Test is an optional Sieve test, MailAdapter support for the
 * interface is optional too.
 * </p>
 */
public class SieveEnvelopeMailAdapter extends SieveMailAdapter implements
        EnvelopeAccessors {
    /**
     * The FROM address used in the SMTP MAIL command.
     */
    private String fieldEnvelopeFrom;

    /**
     * The TO address used in the SMTP RCPT command that resulted in this
     * message getting delivered to this user.
     */
    private String fieldEnvelopeTo;

    /**
     * Constructor for SieveEnvelopeMailAdapter.
     * 
     * @param message
     */
    public SieveEnvelopeMailAdapter(MimeMessage message) {
        super(message);
    }

    /**
     * Method getEnvelopes.
     * 
     * @return Map
     */
    protected Map<String, String> getEnvelopes() {
        Map<String, String> envelopes = new HashMap<String, String>(2);
        if (null != getEnvelopeFrom())
            envelopes.put("From", getEnvelopeFrom());
        if (null != getEnvelopeTo())
            envelopes.put("To", getEnvelopeTo());
        return envelopes;
    }

    /**
     * @see org.apache.jsieve.mail.optional.EnvelopeAccessors#getEnvelope(String)
     */
    public List<String> getEnvelope(String name) throws SieveMailException {
        List<String> values = new ArrayList<String>(1);
        String value = getEnvelopes().get(name);
        if (null != value)
            values.add(value);
        return values;
    }

    /**
     * @see org.apache.jsieve.mail.optional.EnvelopeAccessors#getEnvelopeNames()
     */
    public List<String> getEnvelopeNames() throws SieveMailException {
        return new ArrayList<String>(getEnvelopes().keySet());
    }

    /**
     * @see org.apache.jsieve.mail.optional.EnvelopeAccessors#getMatchingEnvelope(String)
     */
    public List<String> getMatchingEnvelope(String name) throws SieveMailException {
        Iterator envelopeNamesIter = getEnvelopeNames().iterator();
        List<String> matchedEnvelopeValues = new ArrayList<String>(32);
        while (envelopeNamesIter.hasNext()) {
            String envelopeName = (String) envelopeNamesIter.next();
            if (envelopeName.trim().equalsIgnoreCase(name))
                matchedEnvelopeValues.addAll(getEnvelope(envelopeName));
        }

        return matchedEnvelopeValues;
    }

    /**
     * Returns the from.
     * 
     * @return String
     */
    public String getEnvelopeFrom() {
        return fieldEnvelopeFrom;
    }

    /**
     * Returns the recipient.
     * 
     * @return String
     */
    public String getEnvelopeTo() {
        return fieldEnvelopeTo;
    }

    /**
     * Sets the from.
     * 
     * @param from
     *            The from to set
     */
    public void setEnvelopeFrom(String from) {
        fieldEnvelopeFrom = from;
    }

    /**
     * Sets the recipient.
     * 
     * @param recipient
     *            The recipient to set
     */
    public void setEnvelopeTo(String recipient) {
        fieldEnvelopeTo = recipient;
    }

}