package tweetshortener;

// Imports for user input and random number generator
import java.util.Random;
import java.util.Scanner;

/**
 *
 * @author mike
 */
public class TweetShortener {


    public static void main(String[] args) {

        // Setup user input and string variable
        String tweet = new String();
        Scanner userInput = new Scanner(System.in);

        // Keep prompting for tweet if string is empty
        while (tweet.isEmpty())
        {

            // Prompt for tweet and take user input
            System.out.println("Please enter tweet: ");
            tweet = userInput.nextLine();

            // If tweet is under limit, post
            if(tweet.length() <= 140 && !tweet.isEmpty())
            {
                System.out.println("Tweet posted!");
            }

            // If tweet is over the limit, send it to the shortener
            else if (tweet.length() > 140)
            {
                String shortenedTweet = new String();
                shortenedTweet = shortenTweet(tweet);

                System.out.println("Tweet shortened and posted: \n" + shortenedTweet);
            }

        }

    }

    // Tweet shortener
    public static String shortenTweet(String tweet)
    {
        // Set up variables
        String shortenedTweet = new String();
        Random generator = new Random();
        int x;

        // While tweet is over the limit, remove characters at random
        while(tweet.length() > 140)
        {
            x = generator.nextInt(tweet.length()-1);

            // Create a new string around the randomly chosen deletion
            tweet = tweet.substring(0,x) + tweet.substring(x+1);
        }

        // Set and return shortened tweet
        shortenedTweet = tweet;
        return shortenedTweet;
    }

}