TEXT = """\
ESXISTXFÜNF\
ZEHNZWANZIG\
DREIVIERTEL\
VORGESTNACH\
HALBXELFÜNF\
EINSXLEZWEI\
DREIXTXVIER\
SECHSXXACHT\
SIEBENZWÖLF\
ZEHNEUNXUHR\
"""

SEGMENTS = {
	'ES IST':       [(0, 2), (3, 3)],
	'FÜNF_PRE':     [(7, 4)],
	'FÜNFZEHN':     [(7, 8)],
	'ZEHN_PRE':     [(11, 4)],
	'ZWANZIG':      [(15, 7)],
	'DREIVIERTEL':  [(22, 11)],
	'VIERTEL':      [(26, 7)],
	'VOR':          [(33, 3)],
	'NACH':         [(40, 4)],
	'HALB':         [(44, 4)],
	'ELF':          [(49, 3)],
	'FÜNF_UHR':     [(51, 4)],
	'EINS':         [(55, 4)],
	'ZWEI':         [(62, 4)],
	'DREI':         [(66, 4)],
	'VIER':         [(73, 4)],
	'SECHS':        [(77, 5)],
	'ACHT':         [(84, 4)],
	'SIEBEN':       [(88, 6)],
	'ZWÖLF':        [(94, 5)],
	'ZEHN_UHR':     [(99, 4)],
	'NEUN':         [(102, 4)],
	'UHR':          [(107, 3)],
	'STELLE':       [(38, 2), (49, 2), (60, 2)],
	'GESTELLT':     [(36, 4), (49, 2), (60, 1), (71, 1)],
}

HOURS = ['ZWÖLF', 'EINS', 'ZWEI', 'DREI', 'VIER', 'FÜNF_UHR', 'SECHS', 'SIEBEN', 'ACHT', 'NEUN', 'ZEHN_UHR', 'ELF' ]
PARTS = [['UHR'], ['FÜNF_PRE'], ['ZEHN_PRE'], ['VIERTEL'], ['ZWANZIG'], ['FÜNF_PRE', 'HALB'], ['HALB']]

active = [False] * len(TEXT)

def set(segment, val=True):
	for word in segment:
		idx, len = word
		active[idx:idx+len] = [val for _ in range(len)]

def reset():
	global active
	set([(0, len(TEXT))], False)
	set(SEGMENTS['ES IST'])

def settime(time):
	reset()

	hour = time.hour % 12
	minute = 5 * round((time.minute + time.second/60) / 5)
	before = False

	if minute >= 25:
		hour = (hour + 1) % 12
		before = True
		minute = (60-minute)
		if minute == 35:
			minute = 25
			before = False

	print(minute, 'vor' if before else 'nach', hour)

	# 25 before 6 -> 5 after  half 6
	# 25 after  6 -> 5 before half 6
	if minute == 25:
		before = not before

	if not minute in [0, 30]:
		set(SEGMENTS['VOR' if before else 'NACH'])

	set(SEGMENTS[HOURS[hour]])

	for part in PARTS[minute//5]:
		set(SEGMENTS[part])


def dump():
	COLS = 11
	RESET = '\033[0m'
	WHITE = '\033[1;37m'
	GRAY = '\033[0;30m'
	for i, char in enumerate(TEXT):
		col = i % COLS
		row = i // COLS
		if (col == 0):
			print('\n  ', end='')
		color = (WHITE if active[i] else GRAY) if i==0 or active[i] != active[i-1] else ''
		print(f' {color}{char} ', end='')
	print(RESET+'\n')


def live():
	import time
	from datetime import datetime
	while True:
		print('\033c', end='')

		now = datetime.now()
		print(now)

		settime(now)
		dump()

		time.sleep(1)

def demo():
	import time
	import datetime
	t = datetime.datetime.now()
	while True:
		print('\033c', end='')
		print(t)

		settime(t)
		dump()

		time.sleep(1)
		t += datetime.timedelta(minutes=1)

if __name__ == '__main__':
	import sys
	if len(sys.argv) > 1 and sys.argv[1] == 'demo':
		demo()
	else:
		live()