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/*
 * Copyright (C) 2008-2017, Juick
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 *
 * This program 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 Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package com.juick.api;

import com.juick.User;
import org.apache.commons.lang3.StringUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Value;
import rocks.xmpp.addr.Jid;
import rocks.xmpp.core.XmppException;
import rocks.xmpp.core.session.Extension;
import rocks.xmpp.core.session.XmppSessionConfiguration;
import rocks.xmpp.core.session.debug.LogbackDebugger;
import rocks.xmpp.core.stanza.model.Message;
import rocks.xmpp.extensions.component.accept.ExternalComponent;
import rocks.xmpp.extensions.oob.model.x.OobX;

import javax.annotation.PostConstruct;
import java.net.URI;
import java.net.URISyntaxException;

/**
 * @author Ugnich Anton
 */
public class ApiServer implements AutoCloseable {
    private static Logger logger = LoggerFactory.getLogger(ApiServer.class);

    private ExternalComponent xmpp;

    @Value("${xmpp_host:localhost}")
    private String xmppHost;
    @Value("${xmpp_password:secret}")
    private String xmppPassword;
    @Value("${xmpp_jid:api.localhost}")
    private String  xmppJid;
    @Value("${xmpp_port:5347}")
    private int xmppPort;
    @Value("${xmpp_disabled:false}")
    private boolean isXmppDisabled;

    @PostConstruct
    public void init() {
        if (!isXmppDisabled) {
            setupXmppComponent(xmppHost, xmppPort, xmppJid, xmppPassword);
        }
    }

    @Override
    public void close() {
        try {
            if (xmpp != null)
                xmpp.close();

            logger.info("ExternalComponent on juick-api destroyed");
        } catch (Exception e) {
            logger.warn("Exception occurs on juick-api destroy", e);
        }
    }

    public void setupXmppComponent(final String host, final int port, final String jid, final String password) {
        XmppSessionConfiguration configuration = XmppSessionConfiguration.builder()
                .extensions(Extension.of(com.juick.Message.class))
                .build();
        xmpp = ExternalComponent.create(jid, password, configuration, host, port);
        try {
            xmpp.connect();
        } catch (XmppException e) {
            logger.warn("xmpp extension", e);
        }
    }

    public void sendMessage(Message message) {
        if (!isXmppDisabled) {
            xmpp.sendMessage(message);
        }
    }

    public void processMessage(User visitor, String body, String attachmentName) {
        Message xmsg = new Message();
        xmsg.setFrom(Jid.of(String.valueOf(visitor.getUid()), "uid.juick.com", "perl"));
        xmsg.setTo(Jid.of("juick@juick.com/Juick"));
        xmsg.setBody(body);
        try {
            if (StringUtils.isNotEmpty(attachmentName)) {
                String attachmentUrl = String.format("juick://%s", attachmentName);
                xmsg.addExtension(new OobX(new URI(attachmentUrl), "!!!!Juick!!"));
            }
            sendMessage(xmsg);
        } catch (URISyntaxException e1) {
            logger.warn("attachment error", e1);
        }
    }
}