#! /usr/bin/env bash

# $Header: /home/ubuntu/mnt/e9_copy/mitgcm.org/scripts/mk_git_tarfile,v 1.4 2018/01/18 19:22:17 jmc Exp $

# download the source code from github and make a tar file
repo='altMITgcm'
code='MITgcm'
tmpFil="/tmp/"`basename $0`".$$"

umask 0002

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

echo "Make a clone of $code from repo: $repo ..."
git clone --depth 1 https://github.com/$repo/$code.git 2> $tmpFil
outp=$?
if test $outp = 0 ; then
   echo ' --> done!'
   rm -f $tmpFil
else
   echo " Error: 'git clone' returned: $outp"
   cat $tmpFil
   rm -f $tmpFil
   exit 2
fi
#  chgrp gcmpack $code
   chmod 775 $code

rm -rf MITgcm_ss_*
arName='MITgcm_ss_'`date +%Y%m%d`'.tar'

echo -n 'Creating the archive file ... '
( cd $code ; git archive -o ../$arName master )
gzip -9 $arName
#- should check if successful, it not -> exit 3
echo 'Done!'

#chmod 664 ${arName}.gz
ls -l ${arName}*

exit

#-- test for new checkpoint
cd ..
version_file="git_snapshot/$code/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 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