#!/bin/bash


if [ "$1" = "stop" ];then
  if [ -f runningMonitors ]; then
   while read line; do
     kill $line
   done < runningMonitors
  fi 
  rm runningMonitors
  exit
fi

rm -f runningMonitors

if [ -z "$2" ]; then
  echo "usage: startLocalWorkers [-c <ConfigFile>]  [-f <relationfile] <FirstPort> <NumberOfWorkers> "
  echo "This scriptt will start a series of <NumberOfWorkers> SecondoMonitors"
  echo "The first monitor will listen at port <FirstPort>, the second monitor"
  echo "will listen on port <FirstPort> + 1 and so on"
  echo "The database directories will be:"
  echo '  $HOME/workerDB/worker-<i>'
  echo 'where <i> is the number of the worker (conunting starts with 1)'
  exit
fi



# set standard configuration file

config=$SECONDO_CONFIG
if [ -z "$config" ];then
  config="SecondoConfig.ini"
fi


# read optional arguments (config file and worker relation)

while getopts c:f: opt
do
   case $opt in
     c) config=$OPTARG;;
     f) relfile=$OPTARG;;
   esac
done
shift $(($OPTIND - 1))


startPort="$1"
numWorkers="$2"

echo "Configuration file : $config"
echo "worker relation    : $relfile"
echo "start port         : $startPort"
echo "number of workers : $numWorkers" 

# check whether port number and number of slots are numbers 

# the next command does not work in the OS-X bash crutch
#SPOK=$(expr "$startPort" : '[0-9]\+$' >/dev/null && echo OK || echo NOK)
#NWOK=$(expr "$numWorkers" : '[0-9]\+$' >/dev/null && echo OK || echo NOK)
SPOK=OK
NWOK=OK

if [ "$SPOK" = "NOK" ];then
  echo "The first argument (start port) is not an integer"
  exit
fi

if [ "$NWOK" = "NOK" ];then
  echo "The second  argument (number of workers) is not an integer"
  exit
fi

echo "Starting Secondomonitors"

for i in $(seq 1 $numWorkers); do
  port=$[$startPort + $i]
  port=$[$port-1]
  echo "start worker number $i on port $port"
  cmd="SecondoMonitor -c $config -d $HOME/workerDB/worker-$i  -p $port -s"
  $cmd >log_worker_$i 2>&1 &
  echo $! >>runningMonitors
done 

if [ -z  "$relfile" ]; then
  exit
fi






echo "create worker relation in $relfile"
echo "(OBJECT Workers" >$relfile
echo "   ()" >>$relfile
echo "   (rel " >> $relfile
echo "      (tuple" >>$relfile
echo "         (" >> $relfile
echo "                (Host string) " >>$relfile
echo "                (Port int)  " >> $relfile
echo "                (Config string)))) " >>$relfile
echo "    (" >>$relfile

for i in $(seq 1 $numWorkers); do
   port=$[$startPort+$i]
   port=$[$port-1]
   echo "(\"localhost\" $port \"SecondoConfig.ini\")" >>$relfile
done
echo "   ))" >>$relfile