#!/usr/bin/env python3

import sys
from datetime import datetime
import time
import pytz


try:
    if len(sys.argv) < 3:
        print("Usage: {scriptname} timezone_left timezone_right".format(scriptname=sys.argv[0]), file=sys.stderr)
        exit(1)

    try:
        tzleft  = pytz.timezone(sys.argv[1])
        tzright = pytz.timezone(sys.argv[2])
    except pytz.exceptions.UnknownTimeZoneError as e:
        print('Unknown time zone "{}"'.format(e.args[0]), file=sys.stderr)
        exit(1)


    faces = "🕛🕧🕐🕜🕑🕝🕒🕞🕓🕟🕔🕠🕕🕡🕖🕢🕗🕣🕘🕤🕙🕥🕚🕦🕛"

    def face_for(t):
        minute = (t.minute + 15) // 30
        hour   = (t.hour + 0 if minute < 45 else 1) % 12

        return faces[2*hour + minute]


    def color_for(t):
        if t.hour < 5 or t.hour > 22:
            return "888"
        elif t.hour < 10:
            return "DB9"
        elif t.hour < 14:
            return "DDB"
        elif t.hour < 19:
            return "DDD"
        else:
            return "D9B"


    while True:
        utcnow   = datetime.now(tz=pytz.utc)
        localnow = datetime.now()
        leftnow  = utcnow.astimezone(tzleft )
        rightnow = utcnow.astimezone(tzright)
        print(
            "%{T2}%{F#" + color_for(leftnow) + "}" +
            face_for(leftnow) +
            "%{F}%{T-}         " +

            localnow.strftime("%A       %%{T4}%%{F"+color_for(localnow)+"}%H:%M%%{F}%%{T-}     %d %b") +

            "         %{T2}%{F#" + color_for(rightnow) + "}" +
            face_for(rightnow) +
            "%{F}%{T-}",

            flush = True
        )

        delay = 60 - localnow.second - (localnow.microsecond * 10e-7)
        time.sleep(delay)

except Exception as e:
    print(e, file=sys.stderr)