# -*- coding: utf-8 -*-
#===========================================================================
# SVN properties (DO NOT CHANGE)
#
# $Id$
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#
#============================================================================
from datetime import *

def mjd2vexTime (mjd, dateonly=False):
	'''
	Converts a Mean Julian Date (MJD) into a vex compatible datetime
	If the parameter dateonly is set to True only the date portion will be returned
	If dateonly is set to False (default) the full datetime string will be returned
	'''

	
	if mjd < 50001 or mjd > 99999:
		return ''

	mjd0 = datetime(1858, 11, 17, 0, 0)
	md = [0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334]

	d = int(mjd)
	s = int((mjd - d)*86400.0 + 0.5)
	dt = timedelta(d, s)
	t = mjd0 + dt
	d = t.day + md[t.month-1]
	if t.year % 4 == 0 and t.month > 2:
		d += 1
	if dateonly:
		return '%dy%03dd' % \
			(t.year, d)
	else:
		return '%dy%03dd%02dh%02dm%02ds' % \
			(t.year, d, t.hour, t.minute, t.second)