#!/bin/sh
#
# Starts Lora packet forwarder
#

# Allow a few customizations from a config file
test -r /etc/default/packet-forwarder && . /etc/default/packet-forwarder

reset_sx1301() {
	echo "$SX1301_RESET_BCM_PIN"  > /sys/class/gpio/export
	echo "out" > /sys/class/gpio/gpio$SX1301_RESET_BCM_PIN/direction
	echo "0"   > /sys/class/gpio/gpio$SX1301_RESET_BCM_PIN/value
	sleep 0.1
	echo "1"   > /sys/class/gpio/gpio$SX1301_RESET_BCM_PIN/value
	sleep 0.1
	echo "0"   > /sys/class/gpio/gpio$SX1301_RESET_BCM_PIN/value
	sleep 0.1
	echo "$SX1301_RESET_BCM_PIN"  > /sys/class/gpio/unexport
}

start() {
	printf "Starting LoRa packet forwarder: "
	umask 077

	reset_sx1301

	cd /etc/ttn
	start-stop-daemon -S -b -q -p /var/run/packet-forwarder.pid \
		--exec /usr/bin/poly_pkt_fwd -- $PACKETFORWARDER_ARGS
	[ $? = 0 ] && echo "OK" || echo "FAIL"
}
stop() {
	printf "Stopping LoRa packet forwarder: "
	start-stop-daemon -K -q -p /var/run/packet-forwarder.pid
	[ $? = 0 ] && echo "OK" || echo "FAIL"
}
restart() {
	stop
	start
}

case "$1" in
  start)
  	start
	;;
  stop)
  	stop
	;;
  restart|reload)
  	restart
	;;
  *)
	echo "Usage: $0 {start|stop|restart}"
	exit 1
esac

exit $?