#!/bin/bash
function usage() {
    echo "Usage: ./BHgen.bash [-o <offset>] <process>"
    echo "    where <process> is the index of the subset"
    echo "    of events to simulate in this job. The output"
    echo "    is written to BHgen_<process>.hddm where"
    echo "    <offset> is added to <process> if it is given."
    exit 1
}

nthreads=1
nevents=10
ftpserver="nod29.phys.uconn.edu"
ftpdir="/Gluex/simulation/BHgen-5-2020"

source setup_osg_debug.sh

offset=0
process=none
while [ $# -gt 0 ]; do
    if echo $1 | grep -q -- '-'; then
        if [ "$1" = "-o" ]; then
            offset=$2
            shift; shift
        else
            usage
        fi
    else
        process=$1
        break
    fi
done
if [ "$process" = "none" ]; then
    usage
else
    process=`expr $process + $offset`
fi
random_sequence=`expr $process + 1`
random_numbers=`awk '{if(NR=='$random_sequence'){print}}' randoms`

echo Running process $process on `hostname -s`

cp control.in0 control.in
sed -i "s/^TRIG.*/TRIG $nevents/" control.in
sed -i "s/^RNDM.*/RNDM $random_numbers/" control.in
sed -i "s/^OUTF.*/OUTFILE 'BHgen.hddm'/" control.in

hdgeant4 -t$nthreads
retcode=$?

if [ $retcode = 0 ]; then
    outfile=BHgen_$process.hddm
    mv BHgen.hddm $outfile
    srmuri=srm://grinch.phys.uconn.edu/Gluex/simulation/BHgen-5-2020
    outfilepath=file://`pwd`/$outfile
    srmoptions="-2 -overwrite_mode=ALWAYS"
    echo "srmcp $srmoptions $outfilepath $srmuri/$outfile"
    srmcp $srmoptions $outfilepath $srmuri/$outfile && rm BHgen_$process.hddm
    #uberftp $ftpserver "cd $ftpdir; put BHgen_$process.hddm" && rm BHgen_$process.hddm
    [ -r BHgen_stats.astate ] && mv BHgen_stats.astate BHgen_$process.astate && rm -f BHgen_thread_*.astate
    rm control.in
    rm -f *.dlog
else
    exit $retcode
fi