dotfiles/polybar/clock.py

#!/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)


    hourhands   = ""
    minutehands = ""

    def face_for(t):
        minute = minutehands[ t.minute // 5 ]
        hour   = hourhands  [ t.hour % 12   ]

        return color_for(t) + "%{T8}%{F#000}%{O-24}" + hour + "%{O-24}" + minute + "%{T-}%{F}"


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


    while True:
        utcnow   = datetime.now(tz=pytz.utc)
        localnow = datetime.now()
        leftnow  = utcnow.astimezone(tzleft )
        rightnow = utcnow.astimezone(tzright)

        localcolor = color_for(localnow)

        print(
            localnow.strftime("%A") +
            "         " +

            face_for(leftnow) +

            "     %{T4}" + localcolor + localnow.strftime("%H") +
            "%{O2}%{T8}" +              face_for(localnow) +
            "%{O2}%{T4}" + localcolor + localnow.strftime("%M") + "%{T-}" +
            "     " +

            face_for(rightnow) +

            "         " +
            localnow.strftime("%d %b"),

            flush = True
        )

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

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