twitterth.java

///usr/bin/env jbang "$0" "$@" ; exit $?
//DEPS io.quarkus:quarkus-picocli:1.8.1.Final
//Q:CONFIG quarkus.banner.enabled=false
//Q:CONFIG quarkus.log.level=WARN
//DEPS org.twitter4j:twitter4j-core:4.0.7
//JAVA 11+

import picocli.CommandLine;

import javax.enterprise.context.Dependent;
import javax.inject.Inject;
import io.quarkus.runtime.annotations.QuarkusMain;
import io.quarkus.runtime.QuarkusApplication;
import io.quarkus.runtime.Quarkus;
import twitter4j.IDs;
import twitter4j.Twitter;
import twitter4j.TwitterException;
import twitter4j.TwitterFactory;
import twitter4j.User;
import twitter4j.api.UsersResources;
import twitter4j.conf.ConfigurationBuilder;

import java.util.ArrayList;
import java.util.HashSet;
import java.util.List;
import java.util.Set;

import static java.lang.System.out;

@CommandLine.Command(description = "quick'n'dirty utility to iterate followers for a twitter user and get who was a specific follower.")
public class twitterth implements Runnable {

    @CommandLine.Option(names="--user", required = true)
    String user;

    @CommandLine.Option(names="--markers", split = ",", defaultValue = "1,10,100,1000,10000,100000,10000000")
    List<Long> markers;

    @CommandLine.Option(names="--consumerKey", required = true, defaultValue = "${CONSUMERKEY}")
    String consumerKey;

    @CommandLine.Option(names="--consumerSecret", required = true, defaultValue = "${CONSUMERSECRET}")
    String consumerSecret;

    @CommandLine.Option(names="--accessToken", required = true, defaultValue = "${ACCESSTOKEN}")
    String accessToken;

    @CommandLine.Option(names="--accessTokenSecret", required = true, defaultValue = "${ACCESSTOKENSECRET}")
    String accessTokenSecret;

    @Override
    public void run() {

        ConfigurationBuilder cb = new ConfigurationBuilder();
        cb.setDebugEnabled(true)
                .setOAuthConsumerKey(consumerKey)
                .setOAuthConsumerSecret(consumerSecret)
                .setOAuthAccessToken(accessToken)
                .setOAuthAccessTokenSecret(accessTokenSecret);
        TwitterFactory tf = new TwitterFactory(cb.build());
        Twitter twitter = tf.getInstance();

        try {
            User twuser = twitter.showUser(user);

            long followCount = twitter.users().showUser(twuser.getId()).getFollowersCount();

            out.println(String.format("%s has %s followers, looking for followers (%s)", user, followCount, markers.toString()));

            ArrayList<Long> friendList = new ArrayList<>();
            long cursor = -1L;
            long followersFound = 0;

            IDs ids = null;
            do {
                ids = twitter.getFollowersIDs(user, cursor);
                for(long userID : ids.getIDs()) {
                    friendList.add(userID);
                    followersFound++;
                    Long marker = (followCount - followersFound);
                    if(markers.contains(marker)) {
                        out.println(String.format("#%s was @%s",
                                marker,
                                twitter.showUser(userID).getScreenName()));
                        markers.remove(marker);
                    }
                }
            } while((cursor = ids.getNextCursor())!=0 && !markers.isEmpty());

        } catch (TwitterException e) {
            e.printStackTrace();
        }

    }

}