#!/bin/bash


#on veut archiver les fichiers restart
#Dans le cadre du demenagement ils seront renommes
#ATM/Restart/****.nc
#OCE/Restart/****.nc
#...
#sous la forme
#RESTART/ATM_****.nc
#RESTART/OCE_****.nc
#Attention de bien conserver les dates d'origines 
#
#Dans le cadre de la production nouvelle chaine
#ils auront directement le bon nom
#
#On veut egalement que l'archive soit par periode de temps 
# cette periode est definie par la taille du pack donc connue 
# en entree du script (1M, 1Y, 5Y, 10Y etc...) 
#


# $1= PATH/config_card d'une simulation avec 
# TagName/JobName/ExperimentName/SpaceName/DateBegin/DateEnd/PATH_SIMUL
# $2=period_pack en M/m ou Y/y

config_card=${1}
LISTE_DMNFS=${2}


export JOB_DIR=${JOB_DIR:-${PWD}}
export IGCM_DEM=${IGCM_DEM:-${SCRATCHDIR}/IGCM_DEM}
export IGCM_TMP=${IGCM_TMP:-${IGCM_DEM}/tmp}
mkdir -p ${IGCM_DEM}
mkdir -p ${IGCM_TMP}
clean_tmp=${clean_tmp:-yes}
EXE_DIR=$(dirname ${0})
SCRIPT_NAME=$(basename ${0} )

source ${EXE_DIR}/DEM_utilities.sh

DEM_log -0 "Demarrage de ${SCRIPT_NAME}"


#### 0- lecture de config.card 
#### on veut les renseignements suivants : 
#### JobName, PATH_SIMUL, DateBegin et DateEnd
eval $(grep JobName ${config_card}) 
eval $(grep PATH_SIMUL_FULL ${config_card}) 
eval $(grep DateBegin ${config_card}) 
eval $(grep DateEnd ${config_card}) 
eval $(grep IGCM_DEM_SIMU ${config_card})


#### Preparation de l'environnement
# repertoire dans lequel seront crees les archives
STORE_RESTART=$IGCM_DEM_SIMU/Restart
mkdir -p ${STORE_RESTART}

# lecture de periodpack dans ${IGCM_DEM_SIMU}/period_pack.txt
period_pack=`awk '{print $0} ' ${IGCM_DEM_SIMU}/period_pack.txt`

#### 1- renommer les fichiers ######
DEM_log -1 "Renommer les fichiers de Restart"

cd ${STORE_RESTART}
rm -rf *

# On les copie sur le scratchdir en changeant le nom et conservant la date
grep ${PATH_SIMUL_FULL} ${LISTE_DMNFS} | grep Restart | awk '{print $3}' | sed '/^.*Restart$/d' >> ${IGCM_DEM_SIMU}/liste_restart_files.txt


#awk -F/ '{dest_name=$(NF-2)("_") $(NF);
#   system("cp --preserve " $0 " "dest_name)}' ${IGCM_DEM_SIMU}/liste_restart_files.txt
  
gawk -F/ '{dest_name=$(NF-2)("_") $(NF); system("ln -s " $0 " "dest_name)}' ${IGCM_DEM_SIMU}/liste_restart_files.txt

ls -l ${STORE_RESTART} > ${IGCM_DEM_SIMU}/new_liste_restart_files.txt

### 2- creer les listes de fichiers par periode ####
DEM_log -1 "Creation des listes de fichiers par periode"
### 2.1- extraire l'annee et le mois de DateBegin ###
date_begin=${DateBegin}
date_end=${DateEnd}

year_begin=$(echo ${date_begin} | cut -c 1-4 )
month_begin=$(echo ${date_begin} | cut -c 5-6 )
year_end=$(echo ${date_end} | cut -c 1-4 )
month_end=$(echo ${date_end} | cut -c 5-6 )


### 2.2- creation des listes ###
date_begin_pack=${date_begin}
date_end_simulation=${date_end}

month_begin_pack=${month_begin}
year_begin_pack=${year_begin}

number_pack=1

while [ ${date_begin_pack} -le ${date_end_simulation} ]
do 

DEM_log -1 "On calcule la date de fin du pack "

   month_end_pack=${month_begin_pack}
   year_end_pack=`expr ${year_begin_pack} + ${period_pack}`

   if [ ${month_end_pack} -le 9 ] 
   then 
      date_end_pack=${year_end_pack}0${month_end_pack}01
   fi 
   if [ ${month_end_pack} -gt 9 ] 
   then 
      date_end_pack=${year_end_pack}${month_end_pack}01   
   fi 

  
   for file in `awk '{print $9}' ${IGCM_DEM_SIMU}/new_liste_restart_files.txt`; do 
   
     extract_date_file=`echo ${file}  | sed -e "s/.*\${JobName}_//"`
     date_file=`echo ${extract_date_file}| sed 's/\([0-9]\{8\}\)_.*$/\1/g'`


     echo pack n°${number_pack}  ${date_file} ${date_begin_pack} ${date_end_pack} 
     if [  ${date_file} -lt ${date_end_pack} ]
     then 
        if [ ${date_file} -ge ${date_begin_pack} ]
        then 
           echo ${file} >> ${IGCM_TMP}/${$}.liste_pack_restart_${number_pack}.txt
        fi
     fi
   
   done

#on archive les restart - le nom de l'archive contiendra ${yearbegin}${monthbegin}_${yearend}${monthend} 
# end etant la date du dernier fichier contenu et non pas la premiere date suivant 
DEM_log -1 "Recherche de la date de fin reel pour nommer l'archive "
#On classe par ordre alphabetique les fichiers contenus dans liste_pack_restart 
#la date du dernier fichier donnera la date de fin du pack
   sort ${IGCM_TMP}/${$}.liste_pack_restart_${number_pack}.txt > ${IGCM_TMP}/${$}.liste_pack_restart_${number_pack}.txt.tmp
   last_file=$(tail -n 1 ${IGCM_TMP}/${$}.liste_pack_restart_${number_pack}.txt.tmp )
   extract_date_file=$( echo ${last_file}  | sed -e "s/.*${JobName}_//" )
   echo ${extract_date_file}
   DateEnd_Restart=$(   echo ${extract_date_file}| sed 's/\([0-9]\{8\}\)_.*$/\1/g' )
   echo ${DateEnd_Restart}
   mv ${IGCM_TMP}/${$}.liste_pack_restart_${number_pack}.txt.tmp ${IGCM_DEM_SIMU}/liste_pack_restart_${date_begin_pack}_${DateEnd_Restart}.txt


DEM_log -1 "Passage de la commande Tar pour archiver la liste creee"
   tar -cf ${JobName}_${date_begin_pack}_${DateEnd_Restart}_restart.tar --dereference  --files-from ${IGCM_DEM_SIMU}/liste_pack_restart_${date_begin_pack}_${DateEnd_Restart}.txt
#   cat  ${IGCM_DEM_SIMU}/liste_pack_restart_${number_pack}.txt | xargs rm 


DEM_log -1 "On defini le datebegin de la  prochaine periode pack"
#on defini la periode pack suivante
   month_begin_pack=${month_end_pack}
   year_begin_pack=${year_end_pack}

   if [ ${month_begin_pack} -le 9 ]
   then 
      date_begin_pack=${year_begin_pack}0${month_begin_pack}01
   fi 
   if [ ${month_begin_pack} -gt 9 ]
   then 
      date_begin_pack=${year_begin_pack}${month_begin_pack}01
   fi 


   number_pack=`expr ${number_pack} + 1`

done