package examples;

public class CompilationCD2 extends AbstractCD
{
	private String[] artists;
	
	public CompilationCD2(String title, String[] artists, int genre, String date,
			String[] titles, int length)
	{
		super(title, genre, date, length, titles);
		
		this.artists = new String[artists.length];
		for(int i = 0; i < artists.length; i++)
			this.artists[i] = artists[i];
	}
	
	public String toString()
	{
		StringBuffer str = new StringBuffer();
		str.append(super.toString());
		str.append('\n');
		
		for(int i = 0; i < artists.length; i++)
		{
			str.append("title " + i + ':');
			str.append(trackTitles[i]);
			str.append(" artist: ");
			str.append(artists[i]);
		}
		str.append('\n');
		
		return str.toString();
	}
	
	public boolean equals(Object o)
	{
		if(o == null) return false;
		if(o instanceof CompilationCD2)
		{
			CompilationCD2 cd = (CompilationCD2) o;
			boolean result = super.equals(o);
			if(!result) return false;
			
			for(int i = 0; i < artists.length; i++)
				if(!trackTitles[i].equals(cd.trackTitles[i]) || 
					 !artists[i].equals(cd.artists[i]))
				{
					result = false;
					break;
				}
			return result;
		}
		return false;
	}
	
	public int hashCode()
	{
		int result = super.hashCode();
		
		for(int i = 0; i < artists.length; i++)
			result += artists[i].hashCode() * 31 + trackTitles[i].hashCode() * 128;
		
		return result;
	}
	
	public int compareTo(CompilationCD2 rhs)
	{
		int result = super.compareTo(rhs), i = 0;
		while(result == 0)
		{
			result = artists[i].compareTo(rhs.artists[i]);
			i++;
		}
		return result;
	}
}