The messed-up artists list

  private String promptArtist() throws IOException {
    System.out.println("Available artists: ");
    List<String> artists = new ArrayList<>(mSongBook.getArtists());
    int index = promptForIndex(artists);
    return artists.get(index);
  }

  private int promptForIndex(List<String> options) throws IOException {
    int counter = 1;
    for(String option : options){
      System.out.printf("%d.) %s %n", counter, option);
      counter++;
    }
    System.out.print("Your choice:  ");
    String optionAsString = mReader.readLine();
    int choice = Integer.parseInt(optionAsString.trim());
    return choice - 1;
  }

package com.teamtreehouse;

import com.teamtreehouse.model.Song;
import com.teamtreehouse.model.SongBook;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.ArrayDeque;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Queue;


public class KaraokeMachine {
  private SongBook mSongBook;
  private BufferedReader mReader;
  private Queue<Song> mSongQueue;

  private Map<String, String> mMenu;

  public KaraokeMachine(SongBook songBook) {
    mSongBook = songBook;
    mReader = new BufferedReader(new InputStreamReader(System.in));
    mSongQueue = new ArrayDeque<Song>();
    mMenu = new HashMap<String, String>();
    mMenu.put("add", "Add a new song to the song book");
    mMenu.put("play", "Play next song in the queue");
    mMenu.put("choose", "Choose a song to sing!");
    mMenu.put("quit", "Give up. Exit the program");
    }

  private String promptAction() throws IOException {
   System.out.printf("There are %d songs available and %d in the queue. Your options are: %n", 
                     mSongBook.getSongCount(),
                     mSongQueue.size());
    for (Map.Entry<String, String> option: mMenu.entrySet()) {
      System.out.printf("%s - %s %n",
                        option.getKey(),
                        option.getValue());
  }
    System.out.print("What do you want to do: ");
    String choice = mReader.readLine();
    return choice.trim().toLowerCase();
  }

  public void run() {
      String choice = "";
      do {
        try {
          choice = promptAction();
          switch(choice) {
            case "add":
            Song song = promptNewSong();
            mSongBook.addSong(song);
            System.out.printf("%s added! %n%n", song);
            break;
            case "choose":
              String artist = promptArtist();
              Song artistSong = promptSongForArtist(artist);
              mSongQueue.add(artistSong);
              System.out.printf("You chose: %s %n", artistSong);
            break; 
            case "play":
              playNext();
              break;
            case "quit":
              System.out.println("Thanks for playing!");
            break;
            default:
              System.out.printf("Unknown choice: '%s'. Try again. %n%n%n", 
              choice);
          }
        } catch (IOException ioe) {
         System.out.println("Problem with input");
         ioe.printStackTrace();
        }
      } while(!choice.equals("quit"));
   }

private Song promptNewSong() throws IOException {
 System.out.print("Enter the artist's name: ");
 String artist = mReader.readLine();
 System.out.print("Enter the title: ");
 String title = mReader.readLine();
 System.out.print("Enter the video URL: ");
 String videoUrl = mReader.readLine();
 return new Song(artist, title, videoUrl);
}

  private String promptArtist() throws IOException {
    System.out.println("Available artists:");
    List<String> artists = new ArrayList<>(mSongBook.getArtists());   
    int index = promptForIndex(artists);
    return artists.get(index);
  }

  private Song promptSongForArtist(String artist) throws IOException {
    List<Song> songs = mSongBook.getSongsForArtist(artist);
    List<String> songTitles = new ArrayList<>();
    for (Song song : songs) {
      songTitles.add(song.getTitle());
    }
  System.out.printf("Available songs for %s: %n", artist);
  int index = promptForIndex(songTitles);
  return songs.get(index);
  }

  private int promptForIndex(List<String> options) throws IOException {
   int counter = 1;
   for (String option : options) {
     System.out.printf("%d.) %s %n", counter, option);
     counter++;
  }
System.out.print("Your choice: ");
String optionAsString = mReader.readLine();
int choice = Integer.parseInt(optionAsString.trim());
return choice - 1;//We started with counter = 1 while array is zero based
  }   

public void playNext() {
  Song song = mSongQueue.poll();
  if (song == null) {
   System.out.println("Sorry there are no songs in the queue"
                    + "Use choose from the menu to add some"); 
  } else {
    System.out.printf("%n%n%n Open %s to hear %s by %s %n%n%n",
                      song.getVideoUrl(),
                      song.getTitle(),
                      song.getArtist());
    }
  } 
}```

int index = promptForIndex(artists);