#!/bin/bash
# Database translation/creation script
# Copyright (C) 2009, AllWorldIT
# Copyright (C) 2008, LinuxRulz
# 
# This program 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 2 of the License, or
# (at your option) any later version.
# 
# This program 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 this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.

database="$1"
file="$2"


# Display usage info
display_usage() {
    echo "Usage: $0 <database type> <file>"
    echo
    echo "Valid database types:"
    echo "      mysql4  - For MySQL v4"
    echo "      mysql   - For MySQL v5"
    echo "      pgsql   - For PostgreSQL"
    echo "      sqlite  - For SQLite v3"
    echo 
    exit
}


# Check we have our params
if [ -z "$database" -o -z "$file" ]
then
    display_usage
fi



# Check file exists
if [ ! -f "$file" ]
then
    echo "ERROR: Cannot open file '$file'"
    exit 1
fi

# Check what we converting for
case "$database" in
    	"mysql4")
		sed \
			-e 's/@PRELOAD@/SET FOREIGN_KEY_CHECKS=0;/' \
			-e 's/@POSTLOAD@/SET FOREIGN_KEY_CHECKS=1;/' \
			-e 's/@CREATE_TABLE_SUFFIX@/TYPE=InnoDB CHARACTER SET latin1 COLLATE latin1_bin/' \
			-e 's/@SERIAL_TYPE@/SERIAL/' \
			-e 's/@BIG_INTEGER@/BIGINT UNSIGNED/' \
			-e 's/@TRACK_KEY_LEN@/255/' \
			-e 's/@SERIAL_REF_TYPE@/BIGINT UNSIGNED/' < "$file"
		;;

    	"mysql")
		sed \
			-e 's/@PRELOAD@/SET FOREIGN_KEY_CHECKS=0;/' \
			-e 's/@POSTLOAD@/SET FOREIGN_KEY_CHECKS=1;/' \
			-e 's/@CREATE_TABLE_SUFFIX@/TYPE=InnoDB CHARACTER SET latin1 COLLATE latin1_bin/' \
			-e 's/@SERIAL_TYPE@/SERIAL/' \
			-e 's/@BIG_INTEGER@/BIGINT UNSIGNED/' \
			-e 's/@TRACK_KEY_LEN@/512/' \
			-e 's/@SERIAL_REF_TYPE@/BIGINT UNSIGNED/' < "$file"
		;;

	"pgsql")
		sed \
			-e 's/@PRELOAD@/SET CONSTRAINTS ALL DEFERRED;/' \
			-e 's/@POSTLOAD@//' \
			-e 's/@CREATE_TABLE_SUFFIX@//' \
			-e 's/@SERIAL_TYPE@/SERIAL PRIMARY KEY/' \
			-e 's/@BIG_INTEGER@/INT8/' \
			-e 's/@TRACK_KEY_LEN@/512/' \
			-e 's/@SERIAL_REF_TYPE@/INT8/' < "$file"
		;;

	"sqlite")
		sed \
			-e 's/@PRELOAD@//' \
			-e 's/@POSTLOAD@//' \
			-e 's/@CREATE_TABLE_SUFFIX@//' \
			-e 's/@SERIAL_TYPE@/INTEGER PRIMARY KEY AUTOINCREMENT/' \
			-e 's/@BIG_INTEGER@/INT8/' \
			-e 's/@TRACK_KEY_LEN@/512/' \
			-e 's/@SERIAL_REF_TYPE@/INT8/' < "$file"
		;;

	*)
	    echo "ERROR: Invalid database type '$database'"
	    exit 1
	    ;;

esac


