function FindChartWithPTDFVersion(collection, songID, playtype, difficulty, version) {
	return collection.find(chart => chart.songID === songID && chart.playtype === playtype && chart.difficulty === difficulty && chart.versions.includes(version));
}

function FindSongWithTitle(collection, title) {
	return collection.find(e => e.title === title || e.altTitles.includes(title));
}

module.exports = {
	FindSongWithTitle,
	FindChartWithPTDFVersion,
}