Limit Discord CPU usage when not actively selected

cpulimitdiscord.sh

#!/bin/bash

# This isn't something I use much anymore but the concept can be useful I guess

export cpulimitpid

while true; do

    export curwindow=`xprop -id $(xprop -root | awk '/_NET_ACTIVE_WINDOW\(WINDOW\)/{print $NF}') | 
        awk '/WM_CLASS\(STRING\)/{print $NF}'|grep discord|wc -l`  
    if [ "$curwindow" -eq "1" ]
    then
        if [[ "$cpulimitpid" -ne "" ]]
        then
            echo "Killing $cpulimitpid"
            kill $cpulimitpid
            cpulimitpid=""
            fi
    else
        if [[ "$cpulimitpid" -eq "0" ]]
        then
            echo "Starting cpulimit"
            cpulimit -l 1 -c 1 -p `ps -ef | 
                grep 'DiscordCanary --type=renderer' | grep -v grep | awk '{print $2}'` &
            export cpulimitpid=$!
        fi
    fi

    sleep 1

done