#! /bin/sh

Usage()
{
	echo "create_configblock creates a configblock binary from the info on the module sticker."
	echo "This can be used when the configblock got lost during a failed update attempt."
	echo ""
	echo "The created config-block will be copied to the choosen output directory when running"
	echo "the update.sh command. In order to write the config block, the boot configuration block"
	echo "need to be recreated first:"
	echo "run create_bcb"
	echo "run update_configblock"
	echo ""
}

while getopts "h" Option ; do
        case $Option in
                h) Usage
                        # Exit if only usage (-h) was specfied.
                        if [[ $# -eq 1 ]] ; then
                                exit 10
                        fi
                        exit 0
                        ;;
        esac
done

# autotect MODTYPE from from rootfs directory
CNT=`grep -c "T20" rootfs/etc/issue || true`
if [ ${CNT} -ge 1 ] ; then
	echo "Colibri T20 rootfs detected"
	MODTYPE=colibri-t20
	BOOT_DEVICE=nand
else
	CNT=`grep -c "T30" rootfs/etc/issue || true`
	if [ ${CNT} -ge 1 ] ; then
		CNT=`grep -c "Apalis" rootfs/etc/issue || true`
		if [ ${CNT} -ge 1 ] ; then
			echo "Apalis T30 rootfs detected"
			MODTYPE=apalis-t30
		else
			echo "Colibri T30 rootfs detected"
			MODTYPE=colibri-t30
		fi
	else
		CNT=`grep -c "VF" rootfs/etc/issue || true`
		if [ "$CNT" -ge 1 ] ; then
			echo "Colibri VF rootfs detected"

			MODTYPE=colibri-vf
		else
			echo "can not detect modulue type from ./rootfs/etc/issue"
			echo "exiting"
			exit 1
		fi
	fi
fi

echo "Enter the modules serial number on the modules sticker or"
echo "use a barcode scanner to enter the content of the stickers barcode"

# read a barcode and test it to be 8 or 16 numbers only 0025100102489109 0115100000000024
#                                                       1234567890123456 1234567890123456
until [ "${BARCODE}x" != "x" ]
do
	read BARCODE
	#remove all whitespace
	BARCODE=`echo $BARCODE | tr -d ' '`	
	#get strlen and the number of numeric characters
	STRLEN=`echo $BARCODE  | wc -c`
	NUMCNT=`echo $BARCODE | sed 's/[^0-9]//g' | wc -c`
	if [ $STRLEN -ne 17 ] ; then 
		if [ $STRLEN -ne 9 ] ; then
			echo "The serial number must be 8 numbers long (the barcode 16)"
			BARCODE=""
		fi
	fi
	if [ $NUMCNT -ne $STRLEN ] ; then
		echo "The serial number must contain all numeric characters"
		BARCODE=""
	fi
done
DATECODE=19700101000000
if [ $STRLEN -eq 17 ] ; then
	SERIALNR=`echo $BARCODE | awk 'BEGIN{ FIELDWIDTHS = "8 8"} {print $2}'`
	PRODUCTNR=`echo $BARCODE | awk 'BEGIN{ FIELDWIDTHS = "8 8"} {print $1}'`
else
	SERIALNR=$BARCODE
	CONFIGBLOCK_FILE=${MODTYPE}_bin/configblock.bin
	case ${MODTYPE} in
	"colibri-t20")
		RAM_SIZE=256
		echo "Enter the RAM size ( 256 / 512 ):"
		read RAM_SIZE
		echo "Enter I for IT version, nothing otherwise"
		read IT
		if [ $RAM_SIZE -eq 512 ] ; then
			if [ "$IT"x = "I" ] ; then
				PROD_ID="0022"
			else
				PROD_ID="0021"
			fi
			CONFIGBLOCK_FILE=${MODTYPE}_bin/configblock_512.bin

		else
			if [ "$IT"x = "I" ] ; then
				PROD_ID="0024"
			else
				PROD_ID="0020"
			fi
			PROD_ID="0020"
			CONFIGBLOCK_FILE=${MODTYPE}_bin/configblock_256.bin
		fi
		;;
	"colibri-t30")
		PROD_ID="0023"
		;;
	"apalis-t30")
		PROD_ID="0025"
		;;
	"colibri-vf")
		echo "Enter 50 for a Colibri VF50 or 61 for a Colibri VF61"
		VF_TYPE=""
		until [ "${VF_TYPE}x" != "x" ]
		do
			read VF_TYPE
			#remove all whitespace
			VF_TYPE=`echo $VF_TYPE | tr -d ' '`	
			#get strlen and the number of numeric characters
			if [ "${VF_TYPE}" != "61" ] ; then 
				if [ "${VF_TYPE}" != "50" ] ; then
					echo "Only 50 or 61 valid, try again"
					VF_TYPE=""
				fi
			fi
		done

		echo "Enter I for IT version, nothing otherwise"
		read IT

		if [ "$VF_TYPE" = "50" ] ; then
			if [ "$IT" = "I" ] ; then
				PROD_ID="0013"
			else
				PROD_ID="0010"
			fi
		elif [ "$VF_TYPE" = "61" ] ; then
			if [ "$IT" = "I" ] ; then
				PROD_ID="0012"
			else
				PROD_ID="0011"
			fi
		fi
		;;
	esac

	echo "Enter the module version, e.g. V1.2 C"
	read PRODVERSION
	VER_MAJ=`echo $PRODVERSION | awk 'BEGIN{ FIELDWIDTHS = "1 1 1 1 1 1"} {print $2}'`
	VER_MIN=`echo $PRODVERSION | awk 'BEGIN{ FIELDWIDTHS = "1 1 1 1 1 1"} {print $4}'`
	#VARIANT: A=0, B=1 ...
	VARIANT=`echo $PRODVERSION | awk 'BEGIN{ FIELDWIDTHS = "1 1 1 1 1 1"} {print $6}'`
	VARIANT=`printf "%d\n" "'$VARIANT"`
	VARIANT=`expr $VARIANT - 65`
	if [ "$VARIANT" -lt 10 ] ; then
		VARIANT=0$VARIANT
	fi
	PRODUCTNR=${PROD_ID}${VER_MAJ}${VER_MIN}${VARIANT}
fi

#write the config block file
if [ "${MODTYPE}" = "colibri-t20" ] ; then
	PROD_ID=`echo $PRODUCTNR | awk 'BEGIN{ FIELDWIDTHS = "4 4"} {print $1}'`
	CONFIGBLOCK_FILE=${MODTYPE}_bin/configblock_256.bin
	if [ ${PROD_ID} = "0021" ] ; then
		CONFIGBLOCK_FILE=${MODTYPE}_bin/configblock_512.bin
	fi
	if [ ${PROD_ID} = "0022" ] ; then
		CONFIGBLOCK_FILE=${MODTYPE}_bin/configblock_512.bin
	fi
fi
sudo chown ${USER}: `dirname $CONFIGBLOCK_FILE`
sudo rm -f $CONFIGBLOCK_FILE
#file header
awk 'function sc(c) {return (c<128?c:(c-256))} BEGIN{printf "%c%c%c%c",0,64,1,-49}' > $CONFIGBLOCK_FILE
#mac addr / serial
echo $SERIALNR | awk 'function sc(c) {return (c<128?c:(c-256))} {printf "%c%c%c%c%c%c%c%c%c%c%c%c",2,64,0,0, 0,20,45, sc(int($0/256/256)), sc(int($0/256)%256), sc($0%256),0,0 }' >> $CONFIGBLOCK_FILE
#product describtion, $1 char 0/1: ??, $2 char 2/3: ProdID, $3 char 4:VerMaj, $4 char 5:VerMin, $5 char 6/7:Variant
echo $PRODUCTNR | awk 'BEGIN{ FIELDWIDTHS = "2 2 1 1 2"} function sc(c) {return (c<128?c:(c-256))} {printf "%c%c%c%c%c%c%c%c%c%c%c%c",2,64,8,0 ,sc($3),0, sc($4),0, sc($5),0, sc($2),0 }' >> $CONFIGBLOCK_FILE
#fill to 32 bytes
awk 'function sc(c) {return (c<128?c:(c-256))} BEGIN{printf "%c%c%c%c",-1,-1,-1,-1}' >> $CONFIGBLOCK_FILE

exit 0