#!/bin/bash
#
# Copyright (C) 2007-2012 Hypertable, Inc.
#
# This file is part of Hypertable.
#
# Hypertable is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 3
# of the License, or any later version.
#
# Hypertable 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 General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with Hypertable. If not, see <http://www.gnu.org/licenses/>
#

rm -rf /tmp/hypertable-install

if [ -h /opt/hypertable/current ]; then

  mkdir /tmp/hypertable-install

  POST_SCRIPT=/tmp/hypertable-install/post.sh
  OLDVERSION=`readlink /opt/hypertable/current`
  if ! echo $OLDVERSION | grep "^/" > /dev/null ; then
    OLD_HOME="/opt/hypertable/$OLDVERSION"
  else
    OLD_HOME="$OLDVERSION"
  fi

  echo "#\!/bin/bash" | sed 's/\\//g' > $POST_SCRIPT
  echo "pushd . > /dev/null" >> $POST_SCRIPT
  echo "cd /opt/hypertable/@VERSION@/" >> $POST_SCRIPT
  
  # conf
  if [ -h $OLD_HOME/conf ]; then
    echo "rm -rf conf" >> $POST_SCRIPT
    echo "ln -s `readlink $OLD_HOME/conf` conf" >> $POST_SCRIPT
    rm -f $OLD_HOME/conf
  elif [ -d $OLD_HOME/conf ]; then
    if ls $OLD_HOME/conf/*.cfg > /dev/null 2>&1; then
      cp $OLD_HOME/conf/*.cfg /tmp/hypertable-install/
      rm -f $OLD_HOME/conf/*.cfg
    fi
    if ls $OLD_HOME/conf/*.def > /dev/null 2>&1; then
      cp $OLD_HOME/conf/*.def /tmp/hypertable-install/
      rm -f $OLD_HOME/conf/*.def
    fi
    if [ -e $OLD_HOME/conf/notification-hook.sh ]; then
      cp $OLD_HOME/conf/notification-hook.sh /tmp/hypertable-install/
      rm -f $OLD_HOME/conf/notification-hook.sh
    fi
  fi
  
  # hyperspace
  if [ -h $OLD_HOME/hyperspace ]; then
    echo "ln -s `readlink $OLD_HOME/hyperspace` hyperspace" >> $POST_SCRIPT
    rm -f $OLD_HOME/hyperspace
  fi
  
  # fs
  if [ -h $OLD_HOME/fs ]; then
    echo "ln -s `readlink $OLD_HOME/fs` fs" >> $POST_SCRIPT
    rm -f $OLD_HOME/fs
  fi
  
  # run
  if [ -h $OLD_HOME/run ]; then
    echo "ln -s `readlink $OLD_HOME/run` run" >> $POST_SCRIPT
    rm -f $OLD_HOME/run
  fi
  
  # log
  if [ -h $OLD_HOME/log ]; then
    echo "ln -s `readlink $OLD_HOME/log` log" >> $POST_SCRIPT
    rm -f $OLD_HOME/log
  fi
  
  echo "popd > /dev/null" >> $POST_SCRIPT
  chmod 755 $POST_SCRIPT
fi