Pause processes during night

pause.sh

#!/bin/bash
#
# This script will stop a list of running proccesses (var PROCS), disable all monitors and CPUs (except cpu-0).
#
# Usage:
#  pause [on|off|duration]
#
# With no parameters it will pause right alway.
# If [duration] is specified, it will detect for inactivity and pause, in an infinite loop. Use CTRL+C to exit.
# [duration] accepts the same as the command sleep.
#

PROCS="slack chrome brave firefox" ## Insert here your energy-consuming programs
LAST_CPU=$(lscpu -e=cpu|sed -ne '$s/ //gp')

COLOR_GREEN="$(tput setaf 2)"
COLOR_YELLOW="$(tput setaf 3)"
COLOR_RESET="$(tput sgr0)"
COLOR_BOLD="$(tput bold)"

function sig_proc()
{
    local sig=${1:-CONT}
    if [ "$sig" == STOP ]; then
        echo -e "${COLOR_GREEN}Pausing processes: $PROCS"
    else
        echo -e "${COLOR_YELLOW}Resuming processes: $PROCS"
    fi
    printf "%s\n" $PROCS | xargs -l pkill "-$sig" || true
    echo -ne $COLOR_RESET
}

function set_cpu_state()
{
    local state=${1:-1}

    if [ "$state" -eq 0 ]; then
        echo -e "${COLOR_GREEN}Disabling CPUs [1..$LAST_CPU]"
    else
        echo -e "${COLOR_YELLOW}Enabling CPUs [1..$LAST_CPU]"
    fi
    echo $state | eval sudo tee "/sys/devices/system/cpu/cpu{1..$LAST_CPU}/online" >/dev/null
    echo -ne $COLOR_RESET
}

function monitor()
{
    xset -display $DISPLAY dpms force ${1:-on}
}

function pause()
{
    sig_proc STOP
    set_cpu_state 0
    monitor off
}

function resume()
{
    monitor on
    set_cpu_state 1
    sig_proc CONT
}

function wait_inactivity()
{
    eval $(xdotool getmouselocation --shell --prefix=PREV_)
    echo -e "${COLOR_BOLD}$(date): Waiting inactivity for $1 $COLOR_RESET"
    while true; do
        has_activity=false
        sleep $1

        eval $(xdotool getmouselocation --shell --prefix CURR_)
        #echo Current: $CURR_X, Last: $PREV_X
        if [ $CURR_X -eq $PREV_X ]; then
          return
        fi
        PREV_X=$CURR_X
    done
}

function wait_activity()
{
    echo -e "${COLOR_BOLD}Move mouse or press [ENTER] to resume...$COLOR_RESET"
    eval $(xdotool getmouselocation --shell --prefix=PREV_)

    while true; do
        eval $(xdotool getmouselocation --shell --prefix CURR_)
        #echo Current: $CURR_X, Last: $PREV_X
        if [ $CURR_X -ne $PREV_X ]; then
          return
        fi
        PREV_X=$CURR_X

        if read -t 1 -n 1; then
          return
        fi
    done
}

if [ "$1" == on ] || [ "$1" == pause ]; then
    pause
    read -p 'Press [ENTER] to resume...'
    resume
elif [ "$1" == off ] || [ "$1" == resume ]; then
    resume
elif which xdotool &>/dev/null; then
    TIMEOUT=${1:-1h}

    while true; do
        wait_inactivity $TIMEOUT
        echo -e "${COLOR_BOLD}${COLOR_GREEN}System is inactive... sleeping$COLOR_RESET"
        pause
        wait_activity
        echo -e "${COLOR_BOLD}${COLOR_YELLOW}System is active... waking up$COLOR_RESET"
        resume
    done
fi