#!/bin/bash
#
# ----------------
# nico - May 2011
# ----------------

weather_sh=$HOME/bin/weather.sh
twit_sh=$HOME/bin/twit.sh
arduino_ip="http://192.168.1.6"
rain_threshold="60" # 60% chance of precipitation

msg_not="Did not turn sprinkler on because chance of rain is"
#msg_not="Pas d'arrosage car la probabilite de pluie est de"
msg_on="Turned on circuit"
#msg_on="Mise en marche arrosage, circuit"
msg_off="Turned everything off."
#msg_off="Arret arrosage."

turn_on=
twit="yes"
weather="yes"
dbg=
err=ok
while test $# -gt 0
do
	arg=$1
	case $arg in
	-on)
		shift; if [ $# -eq 0 ]; then err="$arg syntax"; break; fi
		turn_on=$1
		;;
	-twit)
		twit="yes"
		;;
	+twit)
		twit="no"
		;;
	-weather)
		weather="yes"
		;;
	+weather)
		weather="no"
		;;
	-help)
		err=help
		;;
	*)
		err="unknown argument $arg"
		;;
	esac
	shift
	unset arg
	if [ "$err" != "ok" ]; then break; fi
done

trap "rm -f $tmps; exit 0" 0 1 2 3 15

if [ "$err" != "ok" ]; then
	if [ "$err" != "help" ]; then
		echo Error: $err 1>&2
	fi
	echo " " 1>&2
	echo "Usage: "`basename $0` 1>&2
	echo " " 1>&2
	echo "    [-on num_circuit  : turn on circuit 'num_circuit'. [1-3]" 1>&2
	echo "    [-|+twit]         : send twit. (default is $twit)" 1>&2
	echo "    [-|+weather]      : check weather forecast. (default is $twit)" 1>&2
	echo " " 1>&2
	echo "Examples: " 1>&2
	echo " " 1>&2
	echo ""`basename $0`"                      # turn everything off" 1>&2
	echo ""`basename $0`" -on 2                # turn on circuit #2" 1>&2
	echo ""`basename $0`" -on 1 -twit -weather # turn on circuit #3" 1>&2
	echo " " 1>&2
	exit 1
fi

# turn off everything

echo "turn off"
curl "${arduino_ip}/?cmd=3" > /dev/null 2> /dev/null
sleep 1
curl "${arduino_ip}/?cmd=5" > /dev/null 2> /dev/null
sleep 1
curl "${arduino_ip}/?cmd=7" > /dev/null 2> /dev/null
sleep 1
echo "done"

# turn on
msg=
if [ "$turn_on" != "" ]; then
	if [ "$weather" == "yes" ]; then
		for i in `$weather_sh | grep rain | sed -e 's;rain:\([0-9]*\)%;\1;'`
		do
			if [ "$dbg" != "" ]; then echo "rain:$i"; fi
			if [ "$i" -ge "$rain_threshold" ]; then
				msg="$msg_not ${i}%..."
			fi
		done
	fi
	if [ "$msg" == "" ]; then
		cmd=`echo $turn_on | tr [123] [246]`
		msg="$msg_on #$turn_on (cmd=$cmd)."
		curl "${arduino_ip}/?cmd=$cmd" > /dev/null 2> /dev/null
	fi
else
	msg="$msg_off"
fi

now=`date '+%Y%m%d-%H:%M:%S'`
#now=`date '+%H:%M:%S'`

echo "$now $msg"
if [ "$twit" == "yes" ]; then
	$twit_sh "$now $msg"
fi

exit 0