KaraokeMachine

Can you post the whole function?

package com.teamtreehouse;

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

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

import java.util.ArrayList;

public class KaraokeMachine { private SongBook mSongBook; private BufferedReader mReader; private Map<String, String> mMenu;

public KaraokeMachine(SongBook songBook){ mSongBook = songBook; mReader = new BufferedReader(new InputStreamReader(System.in)); mMenu = new HashMap<String, String>(); mMenu.put("add", "Add a new song to the song book"); 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. Your option are : %n", mSongBook.getSongCount()); 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); //TODO: add to a song queue System.out.printf("You chose: %s %n", artistSong); 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()); } 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++; } String optionAsString = mReader.readLine(); int choice = Integer.parseInt(optionAsString.trim()); System.out.print("Your choice: "); return choice -1; }

}