set_gtk3_dark_mode.sh

#!/bin/bash

read_cmd="gsettings get org.gnome.desktop.interface color-scheme"
watch_cmd="gsettings monitor org.gnome.desktop.interface color-scheme"
conf_path="$HOME/.config/gtk-3.0/settings.ini"

function setDarkMode() {
    sed -i "s/^gtk-application-prefer-dark-theme=.*/gtk-application-prefer-dark-theme=$1/" $conf_path
	echo "Set darkmode value to $1"
}

if [[ $read_cmd == *"'prefer-dark'"* ]]; then
    setDarkMode "true"
else
    setDarkMode "false"
fi

$watch_cmd > >(while read -r line; do
    if [[ $line == *"color-scheme: 'prefer-dark'"* ]]; then
        setDarkMode "true"
    else
        setDarkMode "false"
    fi
done)