#!/usr/local/bin/bash

LOG=$HOME/battery.log

FLAG=0
SHUTFLAG=0
SLEEP=30

while :

do
	# state of the battery charger
	AC=`apm | grep -m1 AC | awk '{print $4}'`

	# charge in percent
	LIFE=`apm | grep -m 1 life | awk '{print $4}' | sed 's/%//'`

	# apm's estimate of remaining battery life time
	TIME=`apm | grep -m 1 time | awk '{print $4}'`
	
	# use sysctl to find the power consumption in mW
	RATE=`sysctl -n hw.acpi.battery.rate`
	#and CPU Freq
	FREQ=`sleep 1; sysctl -n dev.cpu.0.freq`
#	echo "$FREQ"
	LIGHT=`backlight -q`
#	echo $LIGHT
	MON=`$HOME/bin/getmon && cat $HOME/bin/monx | grep Monitor | awk '{print $NF}'`
	echo $MON
# If we're on battery we'll log the readings
	if [ $AC == "off-line" ]
	then
		echo "`date "+%Y-%m-%d %H:%M:%S"`; $TIME; $LIFE%; $RATE mW; $FREQ MHz; LCD:$LIGHT; Screen $MON ; $AC" >> $LOG
	else
		if [ $SHUTFLAG == 1 ]
			then
			echo "`date` Cancelling Shutdown" >> $LOG
			sudo killall shutdown
			SHUTFLAG=0
			else
				echo "`date "+%Y-%m-%d %H:%M:%S"`; $TIME; $LIFE%; $RATE mW; $FREQ MHz; LCD:$LIGHT; Screen $MON; $AC" >> $LOG

		fi
	fi

	# if we're over 30% we'll do nothing & reset the low battery notification flag
	if [ $LIFE -gt 30 ]
	then
		FLAG=0
#		echo "Battery ok $LIFE charger $AC"
	else
	# otherwise we're getting low, so set  send a notification
        # if the flag isn't yet set (i.e. it's the first one)
#		echo "Battery Low $LIFE Charger $AC"
		if [ $FLAG != 1 ]
		then
			SLEEP=5
			notify-send -t 10000 -i battery-level-40 "BATTERY" "Low $LIFE Charger $AC"
			echo "`date "+%Y-%m-%d %H:%M:%S"` FIRST WARNING SENT..." >> $LOG

		# then set the flag to prevent further notifications
		FLAG=1
		fi

	fi


	if [ $LIFE -lt 20 ]
	then
		if [ $AC == "off-line" ]
		then
			# send a notification
			notify-send -t 10000 -i battery-level-20 "BATTERY" "CRITICAL.... $LIFE Charger $AC"
#			echo "Initiating Shutdown...."
			# and log it in the logfile
			echo "`date "+%Y-%m-%d %H:%M:%S"` Critical Message sent" >> $LOG
			# Then add  code to do the shutdown
			# sudo shutdown -p now (or in x minutes?)
			#if [ $SHUTFLAG == 0 ]
			#then
				#sudo shutdown -p +5
			#	SHUTFLAG=1 
			#fi
		fi
	fi
	# if we're below 15% we need to think about shutting down
	if [ $LIFE -lt 15 ]
	then
		if [ $AC == "off-line" ]
		then
			# send a notification
			notify-send -t 10000 -i battery-level-10 "BATTERY" "CRITICAL.... $LIFE Charger $AC"
#			echo "Initiating Shutdown...."
			# and log it in the logfile
			echo "`date`;$TIME;$LIFE;$RATE;$AC;Shutdown Initiated" >> $LOG
			# Then add  code to do the shutdown
			# sudo shutdown -p now (or in x minutes?)
			if [ $SHUTFLAG == 0 ]
			then
				sudo shutdown -p +1
				SHUTFLAG=1 
			fi
		fi
	fi

	sleep $SLEEP
done