#!/bin/bash
#
#  First get to main level directory for this process
#

if [[  ! -d ./bin || ! -d ./SubProcesses ]]; then
    cd ../
    if [[ ! -d ./bin || ! -d ./SubProcesses  ]]; then
        echo "Error: newprocess_mg5 must be executed from the main, or bin directory"
        exit
    fi
fi
echo -e  "\033[1;31m WARNING This out-dated method of using MG5 will be remove in version 2.0\033[0m"
echo -e "\033[1;31m A proc_card example is present in the main directory of MG5 \033[0m"
echo -e "\033[1;31m you can run it like ./bin/mg5 proc_card.dat \033[0m"

if [[ -e SubProcesses/subproc.mg ]]; then
    echo "Error: newprocess_mg5 can only be used in a clean copy of Template."
    echo "       This directory already contains a generated process, please"
    echo "       open the index.html file to see information about the process."
    echo "If you want to generate events from this process directory, run"
    echo "  bin/generate_events"
    echo "or"
    echo "  bin/madevent"
    echo "and type \"help\" to get started."
    exit
fi

# Check that mg5 exists
main=`pwd`
mgdir=$main/../bin
if [[  ! -x $mgdir/mg5 ]]; then
    mgdir=$main/../madgraph5/bin
fi
if [[ ! -x $mgdir/mg5 ]]; then
   echo "Error no mg5 executable $mgdir/mg5 found"
   exit
fi


dirbin=$main/bin/internal
bin=$main/bin 

# Local versions to work on the cluster
tag=''
while [[ "$1" != ""  ]]; do
    if [[ "$1" == "--web" ]]; then
    mgdir=$MADGRAPH_BASE/MG_ME/mg5
    dirbin=$MADGRAPH_BASE/MG_ME/WebBin
    bin =$MADGRAPH_BASE/MG_ME/WebBin
    tag="--web"
    fi
    shift 1
done

# some external executable
gen_card=$dirbin/gen_cardhtml-pl
gen_info=$dirbin/gen_infohtml-pl

# Check if we have to use MG4 proc_card.dat or MG5 proc_card.dat
if [[ -e ./Cards/proc_card_mg5.dat ]]; then 
   if [[ -e ./Cards/proc_card.dat ]]; then
      if [[ $tag != '--web' ]]; then
          echo "both mg4 and mg5 proc_card.dat are detected. Which one do you want to use? [4/5]"
      	  read card_use 
      else
           card_use='5'
      fi
   else
	card_use='5'
   fi
elif [[ -e ./Cards/proc_card.dat ]]; then
     card_use='4'
else
    echo "neither proc_card.dat or proc_card_mg5.dat" 
    echo "are present in directory Cards"
    echo "Prepare a card (see examples on the web) and"
    echo "copy it there, or run directly ../bin/mg5_aMC."
    exit
fi

echo $$ > generating
rm proc_log.txt >& /dev/null
echo "Started `date`" >  ./proc_log.txt
echo "Running..."

cp -p HTML/thinking.gif HTML/card.jpg
rm SubProcesses/done >& /dev/null

$gen_card >& /dev/null

# launch the mg5 program
if [[ $card_use == '4' ]]; then
# Run ./mg5 with stderr going to both the file proc_log.txt and to terminal
# output. See http://acs.lbl.gov/~ksb/Scratch/sh_redir_pipe.html
    ((echo import proc_v4 ./Cards/proc_card.dat | $mgdir/mg5 3>&1 1>&2 2>&3) | tee /dev/tty) >> proc_log.txt 2>&1
elif [[ $card_use == '5' ]]; then
# Run ./mg5 with stderr going to both the file proc_log.txt and to terminal
# output. See http://acs.lbl.gov/~ksb/Scratch/sh_redir_pipe.html
     (($mgdir/mg5 ./Cards/proc_card_mg5.dat 3>&1 1>&2 2>&3) | tee /dev/tty) >> proc_log.txt 2>&1
else
    echo 'not recognized mode'
fi

echo "Finished `date` " >> ./proc_log.txt
echo "`date` " >& ./CREATED
cd SubProcesses
touch done
cd ..

if [[  $tag == "--web"  ]]; then
   touch Online
fi
rm generating
echo 'done'

# Check that generation worked
if [[ ! -e SubProcesses/subproc.mg ]]; then

    cp -p HTML/stop.jpg HTML/card.jpg
    echo "No diagrams for this process!"
fi

$gen_card >& /dev/null