from datetime import datetime

from geniusweb.deadline.Deadline import Deadline
from geniusweb.deadline.DeadlineRounds import DeadlineRounds
from geniusweb.deadline.DeadlineTime import DeadlineTime
from geniusweb.progress.Progress import Progress
from geniusweb.progress.ProgressRounds import ProgressRounds
from geniusweb.progress.ProgressTime import ProgressTime


class ProgressFactory:
	@staticmethod
	def create( deadline: Deadline, nowms:int) -> Progress :
		'''
		@param deadline the deadline to create a progress for
		@param nowms    The time as from {@link System#currentTimeMillis()} that
		                is to be used as start time for the progress.
		@return new Progress matching the deadline type.
		'''
		assert isinstance(deadline, Deadline)
		if isinstance(deadline,DeadlineRounds):
			return ProgressRounds( deadline.getRounds(),
					0, datetime.fromtimestamp( (nowms + deadline.getDuration())/1000.))
		else:
			return ProgressTime(deadline.getDuration(),datetime.fromtimestamp(nowms/1000.))