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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.server;

import com.juick.Message;
import com.juick.server.component.MessageEvent;
import com.juick.service.CrosspostService;
import com.juick.util.MessageUtils;
import org.apache.commons.lang3.StringUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.event.EventListener;
import org.springframework.scheduling.annotation.Async;
import org.springframework.stereotype.Component;
import twitter4j.TwitterFactory;
import twitter4j.conf.ConfigurationBuilder;

import javax.annotation.Nonnull;
import javax.annotation.PostConstruct;
import javax.inject.Inject;

/**
 * @author Ugnich Anton
 */
@Component
public class TwitterManager {

    private static Logger logger = LoggerFactory.getLogger(TwitterManager.class);

    @Inject
    private CrosspostService crosspostService;

    @Value("${twitter_consumer_key:12345678}")
    private String twitter_consumer_key;
    @Value("${twitter_consumer_secret:secret}")
    private String twitter_consumer_secret;

    private ConfigurationBuilder configurationBuilder;

    @PostConstruct
    public void init() {
        configurationBuilder = new ConfigurationBuilder()
                .setDebugEnabled(true)
                .setOAuthConsumerKey(twitter_consumer_key)
                .setOAuthConsumerSecret(twitter_consumer_secret);
    }

    @Async
    @EventListener
    public void onApplicationEvent(@Nonnull MessageEvent event) {
        Message msg = event.getMessage();
        if (msg.getMid() > 0 && msg.getRid() == 0) {
            if (StringUtils.isNotEmpty(crosspostService.getTwitterName(msg.getUser().getUid()))) {
                if (msg.getTags().stream().noneMatch(t -> t.getName().equals("notwitter"))) {
                    twitterPost(msg);
                }
            }
        }
    }

    void twitterPost(final com.juick.Message jmsg) {
        crosspostService.getTwitterToken(jmsg.getUser().getUid()).ifPresent(t -> {
            String status = MessageUtils.getMessageHashTags(jmsg) + StringUtils.defaultString(jmsg.getText());
            if (status.length() > 255) {
                status = status.substring(0, 254) + "…";
            }
            status += " http://juick.com/" + jmsg.getMid();
            TwitterFactory tf = new TwitterFactory(configurationBuilder
            .setOAuthAccessToken(t.getToken())
            .setOAuthAccessTokenSecret(t.getSecret()).build());
            try {
                tf.getInstance().updateStatus(status);
            } catch (Exception e) {
                logger.info("Twitter exception", e);
            }
        });
    }
}