/*
 * Copyright 2013 (c) Anna Schumaker.
 */
#include <database.h>
#include <error.h>
#include <playlist.h>

static std::set<unsigned int> empty_set;
static Database<IndexEntry> playlist_db("playlist.db");

void playlist :: init()
{
	playlist_db.load();
}

void playlist :: add(const std::string &name, unsigned int track_id)
{
	if ((name == "Banned") || (name == "Favorites")) {
		index_insert(playlist_db, name, track_id);
		playlist_db.save();
	} else
		throw -E_EXIST;
}

void playlist :: del(const std::string &name, unsigned int track_id)
{
	if ((name == "Banned") || (name == "Favorites")) {
		index_remove(playlist_db, name, track_id);
		playlist_db.save();
	} else
		throw -E_EXIST;
}

const std::set<unsigned int> &playlist :: get_tracks(const std::string &name)
{
	if ((name == "Banned") || (name == "Favorites")) {
		try {
			return playlist_db.find(name).values;
		} catch (int error) {
			return empty_set;
		}
	}
	throw -E_EXIST;
}

#ifdef CONFIG_TEST
void playlist :: clear()
{
	playlist_db.clear();
}
#endif /* CONFIG_TEST */