#!/bin/bash
#
# leave_pin_conf.agi
#
# Find the desired ID in the pin conference database,
# and decrement the number of conferees.
#
# Use the Linux "lockfile" command to control concurrent access
#
#set -x

declare -a array
while read -e ARG && [ "$ARG" ] ; do
	array=(` echo $ARG | sed -e 's/://'`)
	export ${array[0]}=${array[1]}
done

checkresults() {
	while read line
	do
	case ${line:0:4} in
	"200 " ) echo $line >&2
	         return;;
	"510 " ) echo $line >&2
	         return;;	
	"520 " ) echo $line >&2
	         return;;
	*      ) echo $line >&2;;	#keep on reading those Invlid command
					#command syntax until "520 End ..."
	esac
	done
}


# Have conference IDs 101 - 106.  Our "database" looks like this:
#	101	0-N
#	102	0-N
#	103	0-N
#	.
#	.
# 2nd column is number of people currently in the conference
# We decrement the number by 1

DBFILE=/var/lib/asterisk/agi-bin/conf_id_db
LOCKFILE=/tmp/conf_id_db.lock
TMPFILE=/tmp/conf_id_db.tmp

UPDATEID=$1

lockfile $LOCKFILE

while read DBLINE
do
    THISID=`echo $DBLINE | awk '{print $1}'`
    if [ $THISID = $UPDATEID ]
    then
	NUMCONFEREES=`echo $DBLINE | awk '{print $2}'`
	NEWNUMCONFEREES=`expr $NUMCONFEREES - 1` 
	cat $DBFILE | sed -e "s/$UPDATEID $NUMCONFEREES/$UPDATEID $NEWNUMCONFEREES/" > $TMPFILE
	mv $TMPFILE $DBFILE
    fi
done < $DBFILE

rm -f $LOCKFILE
exit 0;