/**
 * Copyright (c) 2013, Redsolution LTD. All rights reserved.
 *
 * This file is part of Xabber project; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License, Version 3.
 *
 * Xabber is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 * See the GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License,
 * along with this program. If not, see http://www.gnu.org/licenses/.
 */
package com.xabber.xmpp.archive;

import java.io.IOException;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;

import org.xmlpull.v1.XmlSerializer;

import com.xabber.xmpp.SerializerUtils;
import com.xabber.xmpp.rsm.Set;

/**
 * Represents message archive collection.
 * <p/>
 * http://xmpp.org/extensions/xep-0136.html
 *
 * @author alexander.ivanov
 */
public class Chat extends AbstractChat implements CollectionHeader {

    static final String ELEMENT_NAME = "chat";

    static final String SUBJECT_ATTRIBUTE = "subject";
    static final String THREAD_ATTRIBUTE = "thread";
    static final String VERSION_ATTRIBUTE = "version";

    private String subject;
    private String thread;
    private Integer version;
    private Next next;
    private Previous previous;
    private final Collection<AbstractMessage> messages;
    private Set rsm;

    // TODO: notes

    public Chat() {
        messages = new ArrayList<AbstractMessage>();
    }

    @Override
    public void serializeContent(XmlSerializer serializer) throws IOException {
        super.serializeContent(serializer);
        if (subject != null)
            SerializerUtils.setTextAttribute(serializer, SUBJECT_ATTRIBUTE,
                    subject);
        if (thread != null)
            SerializerUtils.setTextAttribute(serializer, THREAD_ATTRIBUTE,
                    thread);
        if (version != null)
            SerializerUtils.setIntegerAttribute(serializer, VERSION_ATTRIBUTE,
                    version);
        if (next != null)
            next.serialize(serializer);
        if (previous != null)
            previous.serialize(serializer);
        for (AbstractMessage abstractMessage : messages)
            abstractMessage.serialize(serializer);
        if (rsm != null)
            rsm.serialize(serializer);
    }

    @Override
    public boolean isValid() {
        return super.isValid() && getStart() != null && getWith() != null;
    }

    @Override
    public String getElementName() {
        return ELEMENT_NAME;
    }

    public String getSubject() {
        return subject;
    }

    public void setSubject(String subject) {
        this.subject = subject;
    }

    public String getThread() {
        return thread;
    }

    public void setThread(String thread) {
        this.thread = thread;
    }

    @Override
    public Integer getVersion() {
        return version;
    }

    public void setVersion(Integer version) {
        this.version = version;
    }

    public Next getNext() {
        return next;
    }

    public void setNext(Next next) {
        this.next = next;
    }

    public Previous getPrevious() {
        return previous;
    }

    public void setPrevious(Previous previous) {
        this.previous = previous;
    }

    public void addMessage(AbstractMessage value) {
        messages.add(value);
    }

    public Collection<AbstractMessage> getMessages() {
        return Collections.unmodifiableCollection(messages);
    }

    public Set getRsm() {
        // TODO: Use getExtensions().
        return rsm;
    }

    public void setRsm(Set rsm) {
        this.rsm = rsm;
    }

}
