#! /bin/bash
#************************************************************************
# E.S.O. - ALMA project
#
# "@(#) $Id: instAlmaTarball,v 1.2 2010/07/09 12:48:42 alopatin Exp $"
#
# who       when        what
# --------  ----------  -------------------------------------------------
# mpasquat  2003-NOV-24 created
# alopatin  2010-JUL-07 switched from ksh to bash
#
#*******************************************************************************
# ALMA - Atacama Large Millimeter Array
# Copyright (c) ESO - European Southern Observatory, 2014
# (in the framework of the ALMA collaboration).
# All rights reserved.
# 
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
# 
# This library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# Lesser General Public License for more details.
# 
# You should have received a copy of the GNU Lesser General Public
# License along with this library; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307  USA
#*******************************************************************************

#************************************************************************
#   NAME 
#   instAlmaTarball - install an alma software tarball
# 
#   SYNOPSIS
#   instAlmaTarball Installation_directory almaTarball_Path
# 
#   DESCRIPTION
#   This script installs almaTarball_Path in the "Installation_directory" dir.
#   
#   FILES
#
#   ENVIRONMENT
#
#   RETURN VALUES
#   0 - no errors have been produced
#   1 - bad options have been passed or some operation did not work
#
#   CAUTIONS
#
#   EXAMPLES
#   instAlmaTarball ~/mydir ~/warehouse/ACSSW_MONTHLY-2003-11.tar.gz 
#      The file  ~/warehouse/ACSSW_MONTHLY-2003-11.tar.gz is 
#      installed in ~/mydir
#
#   SEE ALSO
#
#   BUGS     
#
#------------------------------------------------------------------------


# Arguments checking
if [[ $# -ne 2  ]]
then
   echo " "
   if [[ $#<2 ]]
   then
      echo " *** Argument/s missing!"
   else
      echo " *** Too many arguments!"
   fi
   echo " "
   echo " usage: instAlmaTarball Inst_directory almaTarball_Path"
   echo " "
   echo " Inst_directory.............: specifies the installation directory "
   echo "                              of the tarball "
   echo " almaTarball_Path...........: path of the almaTarball with tarball file name included"
   echo " "
   exit 1
fi

# Arguments processing
almatarballPath=${2%/*.*}
fileName=${2##/*/}
instDirectory=$1
remove="NO"



# almatarball Directory check
if [[ ! -f $almatarballPath/$fileName ]]
then
   echo " "
   echo " File $2 is not valid."
   echo " "
   exit 1 
fi

# Installation Directory check
if [[ ! -d $instDirectory ]]
then
  echo " Directory $instDirectory does not exist."
  mkdir $instDirectory
  if [[ "$?" != "0" ]]
  then
     echo " *** Could not create directory"
     exit 1
  fi
  echo " Created Installation Directory."
fi

# Go to the installation directory
cd $instDirectory 

# Moving the file from the source to the installation directory
if [[ ! -f $instDirectory/$fileName ]] 
then
   remove="YES"
   cp $almatarballPath/$fileName .
else
   echo " "
   echo " >>> $fileName is present in the installation directory. <<<"
   echo " >>> It will not be removed after the untar command.     <<<"
   echo " "
fi

# Untar the tarball
echo " Untar ongoing."
gtar zxpf $fileName
if [ "$?" = "0" ] 
then
   echo " "
   echo ">>> The file $fileName has been extracted. <<<"
   echo " "
else 
   echo " "
   echo "*** gtar Error."
   echo " "
   exit 1
fi

# Removal of $fileName
if [[ "X$remove" = "XYES" ]] 
then
   rm $fileName
fi

echo " "
echo " done."