#!/bin/bash

LORA_FORWARDER_FOLDER=/var/lora_pkt_fwd
LOGFOLDER=/var/log/
ACM=$1
CONSOLEOUT=$2

if [ "$ACM" == '' ]; then
	ACM=0
fi

killLora()
{
	echo -n "Start Killing..."
	killall -9 lora_pkt_fwd
	echo "done killing."
	sleep 1
	sudo /sbin/modprobe -vr cdc_acm

	# After kernel 5.15.193 or? iPhone attached we need this.
	lsmod | grep cdc_acm
	if [ $? == 0 ]; then
		echo "Error, cdc_acm is present."
		exit 1
	fi

	sleep 1
	sudo /sbin/modprobe -v cdc_acm
	sleep 1
}

killLora

# check for existing lora
PIDLORAPKTFWD=$(ps -eo pid,command | grep -E '[0-9] lora_pkt_fwd' | sed -e 's+ lora.*++' -e 's+ ++')

startLoRa(){
	echo starting LoRa
	checkforACM
	if [ $? == 0 ]; then
		echo "Waiting 25 seconds to make sure device is up"
		echo -n "Starting concentrator: " | tee -a $LOGFOLDER/lora.log
		date | tee -a $LOGFOLDER/lora.log
		for i in `seq 1 25`
		do
			echo -n "$i, "

			# echo some lines to get-rid of CRC zero data log.
			if [ $i -lt 10 ]; then
				echo $i >> $LOGFOLDER/lora.log
			fi
			sleep 1
		done
		echo "LoRa starting.."
		cd $LORA_FORWARDER_FOLDER
		if [ $CONSOLEOUT -eq 1 ]; then
			# OLD ok
			#lora_pkt_fwd -d /dev/ttyACM$ACM | grep --line-buffered -E CRC\|JSON\|ERROR\|rxpk\|mote\|WARNING\|dwnb\|PUSH_DATA\|forwarded\|started\|REJECTED\|rejecte | tee -a $LOGFOLDER/lora.log &
			lora_pkt_fwd -d /dev/ttyACM$ACM | grep --line-buffered -E CRC\|JSON\|ERROR\|rxpk\|mote\|WARNING\|dwnb\|PUSH_DATA\|forwarded\|started\|REJECTED\|rejecte\|Selected | tee -a $LOGFOLDER/lora.log & # for my branch
			exit 0
		else
			echo "No console out. Logging to $LOGFOLDER/lora.log"
			lora_pkt_fwd -d /dev/ttyACM$ACM | grep --line-buffered -E CRC\|JSON\|ERROR\|rxpk\|mote\|WARNING\|dwnb\|PUSH_DATA\|forwarded\|started\|REJECTED\|rejecte\|Selected >> $LOGFOLDER/lora.log & # for my branch
			exit 0
		fi
	else
		echo "We expect LoRa concentrator on ACM$ACM"
		ls -l /dev/ttyACM*
		echo "You can try as root modprobe -r cdc_acm; modprobe cdc_acm if the only cdc_acm device is the LoRa concentrator"
		exit 1
	fi

}

checkforACM(){
	if [ -e /dev/ttyACM$ACM ]; then
		return 0
	else
		return 1
	fi
}

# we don't run lora, run it
if [ "$PIDLORAPKTFWD" == "" ]; then
	echo "No lora_pkt_fwd running"
	startLoRa
fi

# we don't run lora, run it
if [ -v $PIDLORAPKTFWD ]; then
	echo "No lora_pkt_fwd running #2"
	startLoRa
fi

# we run lora, close it
if [  $PIDLORAPKTFWD -gt 0 ]; then
	echo "We kill lora_pkt_fwd"
	startLoRa
fi
exit