extends Node


var periods = []
var last_period = null


func add(date):
	if last_period != null:
		last_period.end = date
		last_period = null
		dump()
		return
	
	# If no new period has begun
	var period = Period.new()
	period.begin = date
	periods.append(period)
	last_period = period
	dump()


func dump():
	for period in periods:
		print("%s - %s" % [period.begin, period.end])