#!/bin/sh

BASE_PATH=/sys/class/gpio

# GPIO pins
SATA0=26
SATA1=25
CPU_FAN=12

# Values
LOW=0
HIGH=1

export_pin() {
	if [ ! -e $BASE_PATH/gpio"$1" ]; then
		echo "$1" >$BASE_PATH/export
	fi
}

unexport_pin() {
	if [ -e $BASE_PATH/gpio"$1" ]; then
		echo "$1" >$BASE_PATH/unexport
	fi
}

set_mode() {
	export_pin "$1"
	echo "out" >$BASE_PATH/gpio"$1"/direction
	echo "$2" >$BASE_PATH/gpio"$1"/value
	if [ "$3" = "clean" ]; then
		unexport_pin "$1"
	fi
}

turn_on() {
	set_mode $SATA0 $HIGH
	sleep 1
	set_mode $SATA1 $HIGH
	set_mode $CPU_FAN $LOW
}

turn_off() {
	set_mode $SATA0 $LOW clean
	set_mode $SATA1 $LOW clean
	set_mode $CPU_FAN $LOW clean
}

trap turn_off INT

if [ "$1" = "on" ]; then
	turn_on
else
	turn_off
fi

exit 0