#!/bin/bash

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