msg-alert

#!/bin/bash

source $HOME/Pi-APRS/config

#message alert for pi-aprs
#20200417 km4ack



CALL="$MYCALL-$SSID"

MSGFLAG=/run/user/1000/.msg
FILE=/run/user/1000/pi-aprs.log
FILE1=/run/user/1000/pi-aprs1.log
touch $FILE $FILE1
counter=1

rm $MSGFLAG > /dev/null 2>&1

while true
do

CHECK=$(diff $FILE $FILE1)
sleep .5

#look for differences in two files
if [ -z "$CHECK" ]; then
clear
echo "Listening for incoming messages"
echo "CTRL+C to EXIT"
else
#Look for changes in file
MSG=$(cat $FILE | tail -3 | grep -i $CALL | head -1 | sed 's/^.*://' | sed 's/{.*$//')
#FROM=$(cat $FILE | tail -3 | grep -i $CALL | head -1 | awk '{print $2}' | sed 's/>.*$//')
FROM=$(cat $FILE | tail -3 | grep -i $CALL | head -1 | awk '{print $2}' | sed 's/^.*}//' | sed 's/>.*$//')
	#verify message is address to our station	
	if [ -z "$FROM" ]; then
	clear
	echo "####################"
	echo "found but not for me"
	echo "####################"
	cp $FILE $FILE1
	#notify with popup if message is found
	else
		if [ ! -f "$MSGFLAG" ]; then
		yad --center --width=800 --wrap --window-icon=$HOME/Pi-APRS/ISS.png --title="New Message" --form --separator="|" --item-separator="," --field="From":RO "$FROM" --field="Message":RO "$MSG" --button=gtk-ok:1 & 
		aplay --device plughw:0,0 -t wav $NEWMSG		
		cp $FILE $FILE1
		else
		clear
		echo "Message was outgoing. Don't Alert"
		cp $FILE $FILE1
		rm $MSGFLAG
		fi
		
	fi
fi


((counter++))
echo $counter

done