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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.components;

import com.juick.User;
import com.juick.server.helpers.UserInfo;
import com.juick.service.PMQueriesService;
import com.juick.service.UserService;
import org.apache.commons.io.IOUtils;
import org.apache.commons.lang3.math.NumberUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.core.env.Environment;
import rocks.xmpp.addr.Jid;
import rocks.xmpp.core.XmppException;
import rocks.xmpp.core.stanza.model.Message;
import rocks.xmpp.extensions.component.accept.ExternalComponent;
import rocks.xmpp.extensions.vcard.temp.VCardManager;
import rocks.xmpp.extensions.vcard.temp.model.VCard;

import javax.annotation.PostConstruct;
import javax.inject.Inject;
import java.io.IOException;
import java.net.URL;

/**
 * Created by vt on 12/11/2016.
 */
public class XMPPBot implements AutoCloseable {
    private static final Logger logger = LoggerFactory.getLogger(XMPPBot.class);
    @Inject
    private UserService userService;
    @Inject
    private PMQueriesService pmQueriesService;
    @Inject
    private Environment env;

    Jid juickJid;

    private ExternalComponent component;

    @PostConstruct
    @Inject
    public void init() {
        component = ExternalComponent.create(env.getProperty("component_name", "juick.com"),
                env.getProperty("component_password", "secret"), env.getProperty("component_host", "localhost"),
                NumberUtils.toInt(env.getProperty("component_port", "5347"), 5347));
        juickJid = Jid.of(env.getProperty("xmppbot_jid", "juick@juick.com/Juick"));
        try {
            VCardManager vCardManager = component.getManager(VCardManager.class);
            vCardManager.setEnabled(true);
            VCard ownVCard = new VCard();
            ownVCard.setNickname("Juick");
            ownVCard.setUrl(new URL("http://juick.com/"));
            ownVCard.setPhoto(new VCard.Image("image/png", IOUtils.toByteArray(getClass().getClassLoader().getResourceAsStream("vCard.png"))));
            vCardManager.setVCard(ownVCard);
            component.addInboundMessageListener(e -> {
                Message message = e.getMessage();
                if (message.getType().equals(Message.Type.ERROR) || message.getType().equals(Message.Type.GROUPCHAT)) {
                    return;
                }
                String text = message.getBody().trim();
                String command = text.toUpperCase();
                User user = userService.getUserByJID(message.getFrom().asBareJid().toString());
                if (command.equals("VCARD")) {
                    try {
                        VCard vCard = vCardManager.getVCard(message.getFrom().asBareJid()).getResult();
                        UserInfo info = new UserInfo();
                        info.setFullName(vCard.getFormattedName());
                        info.setCountry(vCard.getAddresses().get(0).getCountry());
                        info.setUrl(vCard.getUrl().toString());
                        userService.updateUserInfo(user, info);
                        component.sendMessage(new Message(message.getFrom(), Message.Type.CHAT, "vCard updated"));
                    } catch (XmppException vce) {
                        logger.warn("vcard exception", vce);
                    }
                }
            });
            component.connect();
        } catch (XmppException | IOException e) {
            logger.error("bot connection error", e);
        }
    }

    @Override
    public void close() throws Exception {
        if (component != null)
            component.close();

        logger.info("ExternalComponent on xmpp-bot destroyed");
    }
}