#!/bin/bash

# Run as sudo
[ "$UID" -eq 0 ] || exec sudo "$0" "$@"

if [ "$1" == "on" ]
then
    for file in /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor;
    do
        echo "powersave" > $file;
    done
    xrandr --output DP-4 --mode 2560x1600 --rate 60 > /dev/null 2>&1
    xrandr --output eDP-1 --mode 2560x1600 --rate 60 > /dev/null 2>&1
    for i in {1..3}; do brightness_down; done
    echo "Power Saving Mode is now active"
elif [ "$1" == "off" ]
then
    for file in /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor;
    do
        echo "schedutil" > $file;
    done
    xrandr --output DP-4 --mode 2560x1600 --rate 165 > /dev/null 2>&1
    xrandr --output eDP-1 --mode 2560x1600 --rate 165 > /dev/null 2>&1
    for i in {1..3}; do brightness_up; done
    echo "Power Saving Mode is now inactive"
else
    echo "Usage: power_saving_mode [on/off]"
fi