/**
 * Copyright (C) 2017 Christian Pierre MOMON <cmomon@april.org>
 *
 * This file is part of (April) Hebdobot.
 *
 * Hebdobot 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.
 *
 * Hebdobot 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 Hebdobot.  If not, see <http://www.gnu.org/licenses/>
 */
package org.april.hebdobot.twitter;

import org.apache.commons.lang3.StringUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import twitter4j.Status;
import twitter4j.Twitter;
import twitter4j.TwitterException;
import twitter4j.TwitterFactory;
import twitter4j.conf.ConfigurationBuilder;

/**
 * The Class TwitterClient.
 */
public class TwitterClient
{
    private static final Logger logger = LoggerFactory.getLogger(TwitterClient.class);

    private String consumerKey;
    private String consumerSecret;
    private String accessToken;
    private String accessTokenSecret;

    /**
     * Instantiates a new twitter client.
     *
     * @param consumerKey
     *            the consumer key
     * @param consumerSecret
     *            the consumer secret
     * @param accessToken
     *            the access token
     * @param accessTokenSecret
     *            the access token secret
     */
    public TwitterClient(final String consumerKey, final String consumerSecret, final String accessToken, final String accessTokenSecret)
    {
        if (StringUtils.isBlank(consumerKey))
        {
            throw new IllegalArgumentException("Invalid blank consumer key.");
        }
        else if (StringUtils.isBlank(consumerSecret))
        {
            throw new IllegalArgumentException("Invalid blank consumer secret.");
        }
        else if (StringUtils.isBlank(accessToken))
        {
            throw new IllegalArgumentException("Invalid blank access token.");
        }
        else if (StringUtils.isBlank(accessTokenSecret))
        {
            throw new IllegalArgumentException("Invalid blank access token secret.");
        }
        else
        {
            this.consumerKey = consumerKey;
            this.consumerSecret = consumerSecret;
            this.accessToken = accessToken;
            this.accessTokenSecret = accessTokenSecret;
        }
    }

    /**
     * Tweet.
     *
     * @param message
     *            the message
     * @throws TwitterException
     *             the twitter exception
     */
    public void tweet(final String message) throws TwitterException
    {
        if (StringUtils.isBlank(message))
        {
            logger.info("Empty message => tweet aborted.");
        }
        else
        {
            ConfigurationBuilder config = new ConfigurationBuilder();
            config.setDebugEnabled(true);
            config.setOAuthConsumerKey(this.consumerKey);
            config.setOAuthConsumerSecret(this.consumerSecret);
            config.setOAuthAccessToken(this.accessToken);
            config.setOAuthAccessTokenSecret(this.accessTokenSecret);

            Twitter twitter = new TwitterFactory(config.build()).getInstance();

            Status status = twitter.updateStatus(message);
            logger.info("Tweet result [" + status.getText() + "].");
        }
    }
}