#!/bin/bash
#set -x

usage () {
    echo
    echo "usage : mysql2oracle [OPTIONS]"
    echo
    echo -ne "\t--mysql-home <mysql-home>     location of mysql (\$MYSQL_HOME)\n"
    echo -ne "\t--oracle-home <oracle-home>   location of oracle (\$ORACLE_HOME)\n"
    echo -ne "\t--db <db>                     name of vosm MySQL db\n"
    echo -ne "\t--mysql-admin <mysql-admin>   MySQL admin account\n"
    echo -ne "\t--mysql-pwd <mysql-pwd>       password of MySQL account\n"
    echo -ne "\t--oracle-admin <oracle-admin> Oracle account\n"
    echo -ne "\t--oracle-pwd <oracle-pwd>     password of Oracle account\n"
    echo -ne "\t--oracle-db <db>              name of Oracle db\n"
    echo -ne "\t--out <filename>              output file where to put the dump (prevent from querying the oracle db)\n"

    echo
    
    exit 0
}

# install prefix
MYSQL_HOME=${MYSQL_HOME:-/usr}
ORACLE_HOME=${ORACLE_HOME:-/usr}

# VOMS database
voms_database=""

# MySQL admin user
mysql_username_admin=""
mysql_password_admin=""

# Oracle admin user
oracle_username_admin=""
oracle_password_admin=""

dump_output_file=""

TEMP=`getopt -o h --long help,mysql-home:,oracle-home:,db:,mysql-admin:,mysql-pwd:,oracle-admin:,oracle-pwd:,oracle-db:,out: -n 'mysql2oracle' -- "$@"`

if [ $? != 0 ] ; then 
  echo "Terminating..." >&2 ; exit 1 ;
fi

eval set -- "$TEMP"

while true ; do

    case "$1" in

	--mysql-home)             MYSQL_HOME=$2              ; shift 2 ;;
	--oracle-home)            ORACLE_HOME=$2             ; shift 2 ;;

	--db)                     voms_database=$2           ; shift 2 ;;

	--mysql-admin)            mysql_username_admin=$2    ; shift 2 ;;
	--mysql-pwd)              mysql_password_admin=$2    ; shift 2 ;;

	--oracle-admin)           oracle_username_admin=$2   ; shift 2 ;;
	--oracle-pwd)             oracle_password_admin=$2   ; shift 2 ;;

	--oracle-db)              oracle_database=$2         ; shift 2 ;;

	--out)                    dump_output_file=$2        ; shift 2 ;;

	--)                       shift                      ; break   ;;
  --help)                   usage                      ; break   ;;
  \?)                       usage                      ; break   ;;

    esac
done

if [ "${voms_database}" = "" ]; then
    echo -e "\nERROR : database not selected. Use --db option.\n"
    exit 1
fi

if [ "${mysql_username_admin}" = "" ]; then
    echo -e "\nERROR : MySQL admin not selected. Use --mysql-admin option.\n"
    exit 1
fi

# Default prefix
VOMS_LOCATION=/cvmfs/dirac.egi.eu/dirac/v8.0.25/Linux-x86_64

# check TNS_ADMIN is set
TNS_ADMIN=${TNS_ADMIN}
if [ "${TNS_ADMIN}" = "" ]; then
    echo -e "\nERROR : \$TNS_ADMIN not set. \n"
fi

# MySQL client
if test -z $mysql_password_admin ; then
   MYSQLDUMP="$MYSQL_HOME/bin/mysqldump -u $mysql_username_admin --no-create-info --extended-insert=false --quote-names=false"
else
   MYSQLDUMP="$MYSQL_HOME/bin/mysqldump -u $mysql_username_admin -p$mysql_password_admin --no-create-info --extended-insert=false --quote-names=false"
fi

# Oracle client
   CLIENT="$ORACLE_HOME/bin/sqlplus -S $oracle_username_admin/$oracle_password_admin@$oracle_database"

DUMPFILE=`mktemp temp.XXXXXX`

# clean oracle database
if [ "$dump_output_file" = "" ] ; then
  echo "Cleaning oracle database ... "
  if test -f $EDG_LOCATION/etc/voms/voms-oracle.data ; then
      $CLIENT < $EDG_LOCATION/etc/voms/voms-oracle.data
  else
      echo $EDG_LOCATION/etc/voms/voms-oracle.data not installed!
      exit 1
  fi
fi

# dump mysql database, translate and fill oracle database
echo "Dumping data ..."
$MYSQLDUMP $voms_database | sed '/--/d' | sed '/\/\*/d' | sed -e s/"IF EXISTS "/""/g | sed '/LOCK TABLES/d' | sed '/UNLOCK TABLES/d' | tr -s '\n' &> $DUMPFILE
if [ "$dump_output_file" = "" ] ; then
  cat $DUMPFILE | $CLIENT
  rm $DUMPFILE
else
  mv $DUMPFILE $dump_output_file
fi