// Copyright (c) 2011 Bryan Schumaker.
#include <library.h>
#include <track.h>
#include <print.h>

/*
 * Return positive value if s1 > s2
 * Return negative value if s1 < s2
 * Return 0 s1 == s2
 */
static inline int compare_strings(string *s1, string *s2)
{
	/* List empty strings last */
	if (*s1 == "")
		return 1;
	if (*s2 == "")
		return -1;
	return s1->compare(*s2);
}

namespace libsaria
{

	/* Return true if this < cmp_track */
	bool Track::operator<(Track &cmp_track)
	{
		int cmp;

		/* Compare artists */
		cmp = compare_strings(artist_lc, cmp_track.artist_lc);
		if (cmp < 0)
			return true;
		else if (cmp > 0)
			return false;

		/* Compare albums */
		cmp = compare_strings(album_lc, cmp_track.album_lc);
		if (cmp < 0)
			return true;
		else if (cmp > 0)
			return false;

		/* Compare tracks */
		return track < cmp_track.track;
	}

}