echo "-------------------------------------------------------------------------"
echo " CESM PRESTAGE SCRIPT STARTING"
echo " - Case input data directory, DIN_LOC_ROOT, is $DIN_LOC_ROOT"
echo " - Checking the existence of input datasets in DIN_LOC_ROOT"

# This script prestages as follows
# - DIN_LOC_ROOT is the local inputdata area, check it exists
# - check whether all the data is in DIN_LOC_ROOT
# - prestage the REFCASE data if needed

cd $CASEROOT

if !(-d $DIN_LOC_ROOT) then
  echo " "
  echo "  ERROR DIN_LOC_ROOT $DIN_LOC_ROOT does not exist"
  echo " "
  exit -20
endif

if (`./check_input_data -inputdata $DIN_LOC_ROOT -check | grep "unknown" | wc -l` > 0) then
   echo " "
   echo 'Any files with "status unknown" below were not found in the'
   echo 'expected location, and are not from the input data repository.'
   echo 'This is informational only; this script will not attempt to'
   echo 'find these files. If CESM can find (or does not need) these files'
   echo 'at run time, no error will result.'
   ./check_input_data -inputdata $DIN_LOC_ROOT -check
   echo " "
endif

if (`./check_input_data -inputdata $DIN_LOC_ROOT -check | grep "missing" | wc -l` > 0) then
   echo "Attempting to download missing data:"
   ./check_input_data -inputdata $DIN_LOC_ROOT -export
endif 

if (`./check_input_data -inputdata $DIN_LOC_ROOT -check | grep "missing" | wc -l` > 0) then
   echo " "
   echo "The following files were not found, they are required"
   ./check_input_data -inputdata $DIN_LOC_ROOT -check
   echo "Invoke the following command to obtain them"
   echo "   ./check_input_data -inputdata $DIN_LOC_ROOT -export"
   echo " "
   exit -30
endif

if (($GET_REFCASE == 'TRUE') && ($RUN_TYPE != 'startup') && ($CONTINUE_RUN == 'FALSE')) then
  set refdir = "ccsm4_init/$RUN_REFCASE/$RUN_REFDATE"

  if !(-d $DIN_LOC_ROOT/$refdir) then
    echo "*****************************************************************"
    echo "ccsm_prestage ERROR: $DIN_LOC_ROOT/$refdir is not on local disk"
    echo "obtain this data from the svn input data repository:"
    echo "  > mkdir -p $DIN_LOC_ROOT/$refdir"
    echo "  > cd $DIN_LOC_ROOT/$refdir"
    echo "  > cd .."
    echo "  > svn export --force https://svn-ccsm-inputdata.cgd.ucar.edu/trunk/inputdata/$refdir"
    echo "or set GET_REFCASE to FALSE in env_run.xml, "
    echo "   and prestage the restart data to $RUNDIR manually"
    echo "*****************************************************************"
    exit -1
  endif 

  echo " - Prestaging REFCASE ($refdir) to $RUNDIR"
  if !(-d $RUNDIR) mkdir -p $RUNDIR || "cannot make $RUNDIR" && exit -1
  foreach file ($DIN_LOC_ROOT/$refdir/*${RUN_REFCASE}*) 
     if !(-f $RUNDIR/$file:t) then
        ln -s $file $RUNDIR || "cannot prestage $DIN_LOC_ROOT/$refdir data to $RUNDIR" && exit -1
     endif
  end
  cp $DIN_LOC_ROOT/$refdir/*rpointer* $RUNDIR || "cannot prestage $DIN_LOC_ROOT/$refdir rpointers to $RUNDIR" && exit -1

  cd $RUNDIR
  set cam2_list = `sh -c 'ls *.cam2.* 2>/dev/null'`
  foreach cam2_file ($cam2_list)
    set cam_file = `echo $cam2_file | sed -e 's/cam2/cam/'`
    ln -fs $cam2_file $cam_file
  end

  chmod u+w $RUNDIR/* >& /dev/null
endif

echo " CESM PRESTAGE SCRIPT HAS FINISHED SUCCESSFULLY"
echo "-------------------------------------------------------------------------"