function isValidURL(text) {
	if (text.toLowerCase().startsWith('http')) {
		if (text.toLowerCase().indexOf('deezer.com') >= 0 || text.toLowerCase().indexOf('open.spotify.com') >= 0)
			return true
	} else if (text.toLowerCase().startsWith('spotify:')) return true
	return false
}

function convertDuration(duration) {
	//convert from seconds only to mm:ss format
	let mm, ss
	mm = Math.floor(duration / 60)
	ss = duration - mm * 60
	//add leading zero if ss < 0
	if (ss < 10) {
		ss = '0' + ss
	}
	return mm + ':' + ss
}

function convertDurationSeparated(duration) {
	let hh, mm, ss
	mm = Math.floor(duration / 60)
	hh = Math.floor(mm / 60)
	ss = duration - mm * 60
	mm -= hh * 60
	return [hh, mm, ss]
}

function numberWithDots(x) {
	return x.toString().replace(/\B(?=(\d{3})+(?!\d))/g, '.')
}