net.bluemix.droneselfie.TwitterUtilities.java Source code

Introduction

Here is the source code for net.bluemix.droneselfie.TwitterUtilities.java

Source

/*
 * Copyright IBM Corp. 2015
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package net.bluemix.droneselfie;

import org.ektorp.AttachmentInputStream;

import twitter4j.Status;
import twitter4j.StatusUpdate;
import twitter4j.Twitter;
import twitter4j.TwitterFactory;
import twitter4j.auth.AccessToken;

public class TwitterUtilities {

    private static TwitterUtilities singleton;

    static public TwitterUtilities getSingleton() {
        if (singleton == null) {
            singleton = new TwitterUtilities();
        }
        return singleton;
    }

    private TwitterUtilities() {
    }

    public String tweetPicture(String pictureId, String text) {
        String message = "Picture taken via the #bluemix Selfie Drone";
        if (text != null) {
            if (!text.equalsIgnoreCase(""))
                message = text;
        }
        if (pictureId == null)
            return null;
        if (pictureId.equalsIgnoreCase(""))
            return null;

        if (message.length() > 100)
            message = message.substring(0, 100);

        return tweet(pictureId, message);
    }

    private String tweet(String pictureId, String message) {
        String output = null;
        if (message == null)
            return null;
        if (message.equalsIgnoreCase(""))
            return null;

        try {
            String consumerKey = ConfigUtilities.getSingleton().getTwitterConsumerKey();
            String consumerSecret = ConfigUtilities.getSingleton().getTwitterConsumerSecret();
            String accessToken = ConfigUtilities.getSingleton().getTwitterAccessToken();
            String accessTokenSecret = ConfigUtilities.getSingleton().getTwitterAccessTokenSecret();

            TwitterFactory twitterFactory = new TwitterFactory();
            Twitter twitter = twitterFactory.getInstance();
            twitter.setOAuthConsumer(consumerKey, consumerSecret);
            twitter.setOAuthAccessToken(new AccessToken(accessToken, accessTokenSecret));

            StatusUpdate statusUpdate = new StatusUpdate(message);

            AttachmentInputStream data = DatabaseUtilities.getSingleton().getDB().getAttachment(pictureId,
                    pictureId);
            statusUpdate.setMedia("picture", data);

            Status status = twitter.updateStatus(statusUpdate);
            if (status == null)
                return null;
            output = "https://twitter.com/bluedroneselfie/status/" + String.valueOf(status.getId());

            return output;
        } catch (Exception e) {
            e.printStackTrace();
        }

        return output;
    }

    public static void main(String[] args) {
        TwitterUtilities.getSingleton().tweetPicture("1436513841947", "test");
    }
}