#! /usr/bin/env bash

# $Header: /home/ubuntu/mnt/e9_copy/mitgcm.org/scripts/daily_tarfile,v 1.7 2018/01/15 19:23:35 jmc Exp $

# download the source code and make a tar file

#export CVSROOT=/u/gcmpack
#- to allow users to use cvs update/diff on their untar version of the code,
#  switch to pserver method (stored everywhere in the tree in dirs CVS/Root)
export CVSROOT=':pserver:cvsanon@mitgcm.org:/u/gcmpack'

umask 0002

echo 'Changing dir. to /u/u0/httpd/html/download/daily_snapshot'
cd /u/u0/httpd/html/download/daily_snapshot
outp=$?
if test $outp != 0 ; then
   echo " Error in cd : $outp"
   exit 1
fi
test -e MITgcm  &&  rm -rf MITgcm

echo -n 'Checking out MITgcm ... '
cvs -q co -P MITgcm > /dev/null
outp=$?
if test $outp = 0 ; then
   echo 'Done!'
else
   echo " Error in cvs checkout: $outp"
   exit 2
fi
#chgrp gcmpack MITgcm
#chmod 775 MITgcm

rm -f MITgcm_ss_*
tname='MITgcm_ss_'`date +%Y%m%d`'.tar.gz'

echo -n 'Creating the tar file ... '
tar -czf $tname ./MITgcm
#- should check if successful, it not -> exit 3
echo 'Done!'

#chmod 664 $tname
ls -l $tname

#-- test for new checkpoint
cd ..
version_file="daily_snapshot/MITgcm/doc/tag-index"
backupDir="other_checkpoints"
if test -f $version_file ; then
    thischkpt=`awk '/^checkpoint/{print $1; exit}' $version_file`
    short=`echo $thischkpt | sed 's/checkpoint/c/'`
    chkptar="MITgcm_$short"
    if test -f $chkptar.tar.gz ; then
      echo "tar file ($chkptar) exist for current tag: $thischkpt"
    else
      echo -n "Checking out $thischkpt ..."
      rm -f checkout.out checkout.err
      cvs -q co -P -d $chkptar -r $thischkpt MITgcm 1> checkout.out 2> checkout.err
      outp=$?
      if test $outp != 0 ; then
         echo " Error in cvs checkout: $outp"
         cat checkout.err
         exit 4
      fi
      echo -n " ; making tar file ... "
      rm -f checkout.out checkout.err
      tar -cf $chkptar.tar $chkptar
      outp=$?
      if test $outp != 0 ; then
         echo " Error in tar command: $outp"
         exit 5
      else
         echo " Done"
         rm -r -f $chkptar
      fi
      gzip $chkptar.tar
      ls -l $chkptar.tar*
      #-- move previous tar file to backupDir
      listTar=`ls MITgcm_c*.tar.gz`
      if test -d $backupDir ; then
        for xx in $listTar ; do
          if test $xx != $chkptar.tar.gz ; then
            if test -f other_checkpoints/$xx ; then
              echo "error: $backupDir/$xx already exist"
            else
              echo " mv $xx $backupDir"
              mv $xx $backupDir
            fi
          fi
        done
      else
         echo " no dir: $backupDir"
         exit 6
      fi
    fi
fi