Cinnamon Auto Dark Mode

auto-dark-mode.py

#!/bin/env python3

from astral import sun
from astral.geocoder import lookup, database
from datetime import datetime as dt
from pathlib import Path
from pytz import timezone
from subprocess import call

# Config
brightness_day=95
brightness_night=50
cmd="0x10"         # Brightness (Dell U2414H) > ddcutil capabilites
locationInfo = lookup("Berlin", database())

now = dt.now(timezone(locationInfo.timezone))
#now = dt(2021, 1, 16, 3, 0, 0, tzinfo=timezone(locationInfo.timezone))  # testing
sunrise = sun.sunrise(locationInfo.observer, now.today(), locationInfo.timezone)
sunset = sun.sunset(locationInfo.observer, now.today(), locationInfo.timezone)

# Compute brightness by some fancy sigmoid function
factor = 1/(1+10**(-(now-sunrise).total_seconds() / 3600)) \
       - 1/(1+10**(-(now-sunset).total_seconds() / 3600))
print(f"{round(factor*100)}%")

brightness = round(brightness_night + factor * (brightness_day - brightness_night))
call(["ddcutil", "setvcp", cmd, str(brightness)])

if sunrise < now and now < sunset:
    call(["sed", "-i", "s/-dark-/-light-/", Path.home()/".atom/config.cson"])  # Atom
    call(["gsettings", "set", "org.cinnamon.theme", "name", "Arc"])  # Panel
    call(["gsettings", "set", "org.cinnamon.desktop.wm.preferences", "theme", "Arc-Lighter"])  # Window manager
    call(["gsettings", "set", "org.cinnamon.desktop.interface", "gtk-theme", "Arc-Lighter"])  # Controls
else:  # night
    call(["sed", "-i", "s/-light-/-dark-/", Path.home()/".atom/config.cson"])  # Atom
    call(["gsettings", "set", "org.cinnamon.theme", "name", "Arc-Dark"])  # Panel
    call(["gsettings", "set", "org.cinnamon.desktop.wm.preferences", "theme", "Arc-Dark"])  # Window manager
    call(["gsettings", "set", "org.cinnamon.desktop.interface", "gtk-theme", "Arc-Dark"])  # Controls