#!/bin/bash
#
# Copyright(c) 2012-2019 Intel Corporation
# SPDX-License-Identifier: BSD-3-Clause-Clear
#

check_util() {
    which $1 2>&1 > /dev/null || { echo >&2 "Error: missing '$1' utility"; exit 1; }
}

check_util dirname
check_util realpath
check_util basename
check_util awk

SCRIPTPATH=`dirname $0`
SCRIPTPATH=`realpath $SCRIPTPATH`

CONFIG_FILES=`ls $SCRIPTPATH/configure.d/*.conf | sort`
FILES_COUNT=`echo $CONFIG_FILES | wc -w`

CONFIG_FILE="config.out"

generate_config() {
	rm -f ${CONFIG_FILE}
	touch ${CONFIG_FILE}
	declare -a pid_list
	progress=0

	# Compile each test module in backgorund
	echo "Preparing configuration"
		for file in $CONFIG_FILES; do
			progress=$((progress+1))
			# $1 - Action to be performed
			# $2 - File with stored configuration
			# $3 - Name of called script (since script is running as subprocess
			#		it has to be passed explicitly
			source $file "check" "${SCRIPTPATH}/${CONFIG_FILE}" "$file" &
			pid_list+=($!)
	done

	# Wait for all compilation processes to finish
	for i in "${pid_list[@]}"; do
		wait $i &> /dev/null
	done

	grep "X" ${SCRIPTPATH}/${CONFIG_FILE} &> /dev/null
	if [ $? -eq 0 ] ; then
		echo "ERROR! Following steps failed while preparing config:"
		grep "X" ${SCRIPTPATH}/${CONFIG_FILE} | cut -f1 -d ' '
		exit 1
	fi
}

generate_header() {
	rm -f $SCRIPTPATH/modules/generated_defines.h
	progress=0
	for file in $CONFIG_FILES; do
		progress=$((progress+1))
		echo -ne "Configuring OpenCAS: $progress/$FILES_COUNT\033[0K\r"
		CONF=$(cat ${CONFIG_FILE} | awk -v file=$(basename $file) '{ if ($1 == file) print $2 }')
		/bin/bash $file "apply" "$CONF" "$file"
	done
	echo ""
}

if [ -z "$1" ]; then
	generate_config
else
	CONFIG_FILE="$1"
fi

generate_header