#!/bin/bash

if [ ! -e "${PTXDIST_BOARDSETUP}" ]; then
	echo "Please run 'ptxdist boardsetup' first!" >&2
	exit 1
fi

set -a
. "${PTXDIST_BOARDSETUP}"
set +a

# We can put both u-boot-env and barebox-env in the platformconfig directory.
# Both of them will be scanned and parsed. Kermit script will recognize which
# bootloader is running on the target and pick up the right configuration. 
UBOOT_ENVDIR="${PTXDIST_PLATFORMCONFIGDIR}/u-boot-env"
BAREBOX_ENVDIR="${PTXDIST_PLATFORMCONFIGDIR}/barebox-env"

if [ -d ${UBOOT_ENVDIR} -a -r ${UBOOT_ENVDIR} ]; then
	CONFFILE="${UBOOT_ENVDIR}/config${PTXDIST_PLATFORMSUFFIX}"
	if [ ! -r "${CONFFILE}.in" ]; then
		if [ -r "`dirname "${CONFFILE}"`/config.in" ]; then
			CONFFILE="`dirname "${CONFFILE}"`/config"
		else
			echo "Direcotry for U-Boot environment found, but config file is missing!" >&2
			exit 1
		fi
	fi
	#Replace @magics@ with PTXCONF-variables
	#FIXME: Warn if variable is empty?
	awk 'match($0, "@[A-Z0-9_]+@") { var=substr($0,RSTART+1,RLENGTH-2); gsub("@"var"@", ENVIRON[var]); } {print} ' "${CONFFILE}".in >"${CONFFILE}"
	UBOOT_CONFFILE="${CONFFILE}"
fi

if [ -d "${BAREBOX_ENVDIR}" -a -r "${BAREBOX_ENVDIR}" ]; then
	CONFFILE="${BAREBOX_ENVDIR}/config${PTXDIST_PLATFORMSUFFIX}"
	if [ ! -r "${CONFFILE}.in" ]; then
		if [ -r "`dirname "${CONFFILE}"`/config.in" ]; then
			CONFFILE="`dirname "${CONFFILE}"`/config"
		else
			echo "Directory for Barebox environment found, but config file is missing!" >&2
			exit 1
		fi
	fi
	#Replace @magics@ with PTXCONF-variables
	#FIXME: Warn if variable is empty?
	awk 'match($0, "@[A-Z0-9_]+@") { var=substr($0,RSTART+1,RLENGTH-2); gsub("@"var"@", ENVIRON[var]); } {print} ' "${CONFFILE}".in >"${CONFFILE}"
	# Neith u-boot-v2 nor barebox acutally need CONFFILE while calling
	# kermit setenv function. However U-Boot V1 need this. So we have to
	# pass this information to the kwrapper. In case that we only have
	# barebox env directory we set UBOOT_CONFFILE to a dummy value to
	# make sure that setenv can parse the parameters correctly
	[ -z "${UBOOT_CONFFILE}" ] && UBOOT_CONFFILE="NULL"
fi

if [ -z "${CONFFILE}" ]; then
	echo "No environment directory found!" >&2
	exit 1
fi

PTXDIST_SETENV_ENV_IMAGE="$(mktemp "${PTXCONF_BOARDSETUP_TFTP_PATH}/environment_image.XXXXXX")"
chmod 644 "${PTXDIST_SETENV_ENV_IMAGE}"

"${PTXDIST_TOPDIR}/tests/kwrapper" setenv "${UBOOT_CONFFILE}" "${PTXDIST_SETENV_ENV_IMAGE}"

rm -rf "${PTXDIST_SETENV_ENV_IMAGE}"