package examples;

import java.text.DateFormat;
import java.text.ParseException;
import java.util.*;

/**
 * CS401 Example CompilationCD
 * 
 * A simple class to represent a music CD where each track belongs to an
 * different artist. Like MusicCD, this class is very simple, providing only a
 * single constructor, toString() method, and compareTo() method. Notice that
 * much of the implementation is exactly like that of MusicCD.
 * 
 * @author PJ Dillon
 */
public class CompilationCD
{
	public static String [] music_genres = {"Popular", "Rock", "Jazz",
	  				"Country", "R&B", "Classical", "Other"};
	
	private String title;
	private String[] artists;
	private int genre;
	private String[] trackTitles;
	private int length;
	private Date releaseDate;
	
	public CompilationCD(String t, String[] a, int g, String[] tt, int l, 
												String d)
	{
		title = new String(t);
		
		/*
		 * Unlike MusicCD, we're given an array of Strings for the artist names,
		 * each of which we expect to correspond to the names of the tracks in the
		 * trackTitles array.
		 */
		artists = new String[a.length];
		for(int i = 0; i < a.length; i++)
			artists[i] = new String(a[i]);
		
		if (g >= 0 && g < music_genres.length)
			genre = g;
		else
			genre = music_genres.length-1;
		
		trackTitles = new String[tt.length];
		for(int i = 0; i < tt.length; i++)
			trackTitles[i] = tt[i];
		
		DateFormat df = DateFormat.getDateInstance(DateFormat.SHORT);
		try 
		{
			releaseDate = df.parse(d);
		}
		catch (ParseException e)
		{
			releaseDate = null;
		}
		
		length = l;
	}
	
	public String toString()
	{
		StringBuffer s = new StringBuffer();
		s.append("CD:           " + title + '\n');
		s.append("Artists:      ");
		for(int i = 0; i < artists.length; i++)
			if(i < artists.length -1)
				s.append(artists[i] + ", ");
			else
				s.append(artists[i]);
		s.append('\n');
		s.append("Genre:        " + music_genres[genre] + '\n');
		
		if (releaseDate != null)
			s.append("Release Date: " + releaseDate.toString() + "\n");
		else
			s.append("No release date \n");
		
		int min = length / 60;
		int sec = length % 60;
		s.append("Number of tracks: " + trackTitles.length + "\n");
		s.append("Length: " + min + " min. " + sec + " sec. \n");
		
		return s.toString();
	}
	
	public int compareTo(Object r)
	{
		CompilationCD rhs = (CompilationCD) r;
		return this.title.compareTo(rhs.title);
	}
}