#!/bin/bash

# Copyright 2012 GRNET S.A. All rights reserved.
#
# Redistribution and use in source and binary forms, with or
# without modification, are permitted provided that the following
# conditions are met:
#
#   1. Redistributions of source code must retain the above
#      copyright notice, this list of conditions and the following
#      disclaimer.
#   2. Redistributions in binary form must reproduce the above
#      copyright notice, this list of conditions and the following
#      disclaimer in the documentation and/or other materials
#      provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS
# OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR
# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
# USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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#


set -e

dirname=$(dirname -- "${0}")
if cd "${dirname}"; then
	XSEG_HOME=$(pwd -P)
	cd - > /dev/null
fi

if [ -z "$XSEG_HOME" ]; then
	echo 'Cannot set $XSEG_HOME'
	exit 1
fi

PEERS=${XSEG_HOME}/peers
TOOLS=${XSEG_HOME}/tools
LIBS=${XSEG_HOME}/lib/user

if [ ! -d "${LIBS}" ] || [ ! -d "${PEERS}" ]; then
	echo "Cannot find basic xseg layout"
	exit 1
fi

if ! echo ${PATH} | grep -E -e '(^|:)'"${PEERS}"'(:|$)' > /dev/null 2>&1; then
	PATH=${PATH}:${PEERS}
fi

if ! echo ${PATH} | grep -E -e '(^|:)'"${TOOLS}"'(:|$)' > /dev/null 2>&1; then
	PATH=${PATH}:${TOOLS}
fi

if ! echo ${LD_LIBRARY_PATH} | grep -E -e '(^|:)'"${LIBS}"'(:|$)' > /dev/null 2>&1; then
	LD_LIBRARY_PATH=${LD_LIBRARY_PATH}:${LIBS}
fi

export PATH LD_LIBRARY_PATH XSEG_HOME
source ${XSEG_HOME}/config.env
export XSEG_DOMAIN_DIRS XSEG_DIRS

if [ "$1" = "show" ]; then
	echo "export XSEG_HOME="${XSEG_HOME}
	echo "export XSEG_DIRS="${XSEG_DIRS}
	echo "export XSEG_DOMAIN_DIRS="${XSEG_DOMAIN_DIRS}
	echo "export PATH="${PATH}
	echo "export LD_LIBRARY_PATH="${LD_LIBRARY_PATH}
else
	if [ -z "${NONINTERACTIVE}" ]; then
		[ -z "$SHELL" ] && SHELL=/bin/bash

		selfname=$(basename -- "${0}")
		[ "$selfname" = "envsetup" ] && exec "$SHELL"
	fi
fi