#!/bin/sh
#
# ========================================================================
#
# *
# * This file is part of MARS, the MAGIC Analysis and Reconstruction
# * Software. It is distributed to you in the hope that it can be a useful
# * and timesaving tool in analysing Data of imaging Cerenkov telescopes.
# * It is distributed WITHOUT ANY WARRANTY.
# *
# * Permission to use, copy, modify and distribute this software and its
# * documentation for any purpose is hereby granted without fee,
# * provided that the above copyright notice appear in all copies and
# * that both that copyright notice and this permission notice appear
# * in supporting documentation. It is provided "as is" without express
# * or implied warranty.
# *
#
#
#   Author(s): Daniela Dorner  12/2005 <mailto:dorner@astro.uni-wuerzburg.de>
#
#   Copyright: MAGIC Software Development, 2000-2006
#
#
# ========================================================================
#
# This script is linking the montecarlo files from the original structure
# to a structure from which the files can be processed more easily with the
# automatic analysis. 
# This script is not yet running automatically. 
#
# original structure:
# /magic/montecarlo/camera/
#
# new structure: 
# /magic/montecarlo/rawfiles/YYYY/MM/DD/file.root
# more explanation concerning the file structure can be found in the file
# /magic/montecarlo/rawfiles/README.txt
#
# First the data files are linked and then in each new directory also the 
# pedestal and calibration file is linked. 
#

source `dirname $0`/sourcefile
printprocesslog "INFO starting $0"
program=linkmc

set -C

scriptlog=$runlogpath/$progam-`date +%F`.log
date >> $scriptlog 2>&1

# check if script is already running
lockfile=$lockpath/lock-$program.txt
checklock  >> $scriptlog 2>&1

mccampath=$mcpath/camera
next=$mcrawpath/.next #in .next the next runno is stored
processed=$mcrawpath/.processed #in .processed the linked files are stored
readme=$mcrawpath/README.txt #file in which the information about the modes is redirected to have always an updated explanation

# check if file with next runnumber is available
if ! ls $next >> $scriptlog 2>&1
then
   echo "file $next not found -> no start-runno -> exit" >> $scriptlog 2>&1
   printprocesslog "ERROR file $next (last runno) not found"
   finish >> $scriptlog 2>&1
fi


# observation modes 
modes=("" "Gammawobble+" "Gammanowobble0" "GammawobbleHE+" "GammanowobbleHE0" "Gammawobble0" "GammawobbleHE0" "Gammadiffuse0" "Protonnowobble0" )
#be carful: 
# w- not yet foreseen in this script

# print information and explanation of structure into README.txt 
date >| $readme 2>&1
echo "" >> $readme 2>&1
echo "Explanation for the structure in which the mc files are linked" >> $readme 2>&1
echo "--------------------------------------------------------------" >> $readme 2>&1
echo "" >> $readme 2>&1
echo "the files are linked in a YYYY/MM/DD structure like the data files" >> $readme 2>&1
echo "YYYY represents 19zbin" >> $readme 2>&1
echo "MM represents the mode" >> $readme 2>&1
echo "DD represents the psf in mm" >> $readme 2>&1
echo "" >> $readme 2>&1
echo "explanation of the modes" >> $readme 2>&1
echo "modes: "${modes[@]} >> $readme 2>&1
echo "" >> $readme 2>&1
for (( i=1 ; i <= 12 ; i++ )) 
do 
   if [ "${modes[i]}" != "" ]
   then 
      numofmode=`printf %02d $i`
      echo "mode (MM) = $numofmode means ${modes[$i]}" >> $readme 2>&1
   fi
done
echo "" >> $readme 2>&1
echo "the mode is indicating " >> $readme 2>&1
echo " - the particle type" >> $readme 2>&1
echo " - wobble/nowobble" >> $readme 2>&1
echo " - HE" >> $readme 2>&1
echo " - w+/w0 (as +/0)" >> $readme 2>&1
echo " a combination of w0 and wobble means 'fake wobble'" >> $readme 2>&1
echo "  (normal mc shifted by 0.4 deg -> abberation not taken into account)" >> $readme 2>&1
echo "" >> $readme 2>&1


#get runnumber
runno=`cat $next`

#get files, which have to be linked
camfiles=`find $mccampath -type f | grep -v Cal_and_Ped`

printprocesslog "INFO linking new camerafiles starting with runno $runno"
for camfile in ${camfiles[@]}
do 
   #continue, if file is already linked 
   if grep $camfile $processed >> $scriptlog 2>&1
   then 
      continue
   fi
   printprocesslog "INFO linking $file"
   file=`basename $camfile` #filename
   no=`printf %08d $runno | cut -c 0-5` #first 5 digits of a 8digit runno -> for path
#   no2=`printf %08d $runno` #runno with 8 digits
# workaround due to 5digit runnumber for data with runnumber < 35487
   no2=`printf %05d $runno`
   zbin=`echo $file | cut -d_ -f2 | cut -c 5-6` #zbin from filename 
   zbin=`printf %02d $zbin` #2digit
   wobble=`echo $file | cut -d_ -f6 | cut -c 2` #mode from filename
   particle=`echo $file | cut -d_ -f1` #particle type from filename
   psf=`echo $camfile | cut -d/ -f5 | cut -c 6,8` #psf from path
   
   particledir=`echo $camfile | cut -d/ -f4` #particletype from path
   wobbledir=`echo $camfile | cut -d/ -f6` #mode from path
   
   #build mode name
   testmode=$particle$wobbledir$wobble 

   #get mode extension for filename
   case $wobble in 
       0)   wobblemode="";;
       +)   wobblemode="W1";;
       -)   wobblemode="W2";;
       *)   echo "couldn't find any indication for mode (wobble)" >> $scriptlog 2>&1
            ;;
   esac
   
   #get no of mode from array $modes
   for (( i=1 ; i <= 12 ; i++ )) 
   do 
       if [ "${modes[$i]}" == "$testmode" ]
       then 
          totalmode=$i
          break
       fi
   done

   totalmode=`printf %02d $totalmode` #2 digits

   project=${particle}${zbin}${wobblemode} #build project name
   #create new filename
   newfile="$mcrawpath/19$zbin/$totalmode/$psf/19${zbin}${totalmode}${psf}_${no2}_D_${project}_E.root"
   newdir=`dirname $newfile`
   makedir $newdir >> $scriptlog 2>&1

   runno=`expr $runno + 1` #next runnumber
   echo $runno >| $next 

   #link file
   ln -sv $camfile $newfile >> $scriptlog 2>&1 
   #add filename to processed file
   echo $camfile >> $processed

done

printprocesslog "INFO linking cal and ped files"
echo "linking cal and ped file" >> $scriptlog 2>&1
#get files
pedfile=`find $mccampath/Cal_and_Ped -name *_P_*.root`
calfile=`find $mccampath/Cal_and_Ped -name *_C_*.root`
echo "calfile"$calfile >> $scriptlog 2>&1
echo "pedfile"$pedfile >> $scriptlog 2>&1
#check number of files
numfiles=`echo $pedfile $calfile | wc -w`
if [ "$numfiles" != "2" ]
then 
   "too many files in the directory $mccampath/Cal_and_Ped -> exit" >> $scriptlog 2>&1
   printprocesslog "ERROR too many ped and cal files found in $mccampath/Cal_and_Ped"
   finish >> $scriptlog 2>&1
fi

#get all directories in the linked structure
dirs=`find $mcrawpath -type d`

for dir in ${dirs[@]}
do 
   #continue, if directory has already linked C and P run
   cont=`ls $dir/*_0000[12]_[CP]_MonteCarlo_E.root 2>/dev/null | wc -w`
   if [ "$cont" == "2" ] >> $scriptlog 2>&1
   then 
      continue
   fi

   #continue, if directory is not at the lowest level of the structure
   cont=`echo $dir | cut -d/ -f6`
   if [ "$cont" == "" ]
   then
      continue
   fi

   #get date for filename from directory name
   date=`echo $dir | cut -c 22-25,27,28,30,31`
   
   #create new filenames and link files
# workaround due to 5digit runnumber for data with runnumber < 35487
#   newcalfile="${dir}/${date}_00000002_C_MonteCarlo_E.root"
   newcalfile="${dir}/${date}_00002_C_MonteCarlo_E.root"
   ln -sv $calfile $newcalfile >> $scriptlog 2>&1
# workaround due to 5digit runnumber for data with runnumber < 35487
#   newpedfile="${dir}/${date}_00000001_P_MonteCarlo_E.root"
   newpedfile="${dir}/${date}_00001_P_MonteCarlo_E.root"
   ln -sv $pedfile $newpedfile >> $scriptlog 2>&1
done

finish >> $scriptlog 2>&1