#!/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=$SCRIPTPATH/"config.out"

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

	# Compile each test module in background
	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 $file "check" "$CONFIG_FILE" "$file" &
			pid_list+=($!)
	done

	# Wait for all compilation processes to finish
	wait

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

generate_header() {
	rm -f $SCRIPTPATH/modules/generated_defines.h
	# Configs starting with '1_' have to be put as first in header
	FIRST=$(echo $CONFIG_FILES | tr ' ' '\n' | grep '1_')
	SECOND=$(echo $CONFIG_FILES | tr ' ' '\n' | grep '2_')

	echo "Configuring OpenCAS"
	for file in $FIRST; do
		CONF=$(cat ${CONFIG_FILE} | grep $(basename $file) | cut -d' ' -f2)
		source $file "apply" "$CONF" "$file" &
	done

	wait

	for file in $SECOND; do
		CONF=$(cat ${CONFIG_FILE} | grep $(basename $file) | cut -d' ' -f2)
		source $file "apply" "$CONF" "$file" &
	done

	wait
}

if [ -z "$1" ]; then
	generate_config
else
	CONFIG_FILE=$(realpath $1)
	if [ $? -ne 0 ] ; then
		echo "Invaild path to config file!"
		exit 1
	fi
fi

generate_header