#!/bin/bash
#
set -xe

PROGRAM="$(basename $0)"

usage(){
	echo "$PROGRAM <hash>"
}

cdaw(){
	pwd > tmp_holder
}

cdaw

CURDIR="$(cat tmp_holder)"

TMPWD="/tmp/rjs"

if [ ! -d "$TMPWD" ]
then
	mkdir -p "$TMPWD"
	if [ "$?" != 0 ]
	then
		echo "Can't create $TMPWD dir"
		exit 1
	fi
fi

MAPSDIR="$AK_WORKDIR/fmp"

CHKDIR="$AK_WORKDIR/ftr"

cd $CHKDIR
if [ "$?" != 0 ]
then
	echo "Can't get dir"
	exit 1
fi



if [ ! -z $1 ]
then
	MAPSFILE="$1"

	echo '#!/bin/bash' > script
	
    # We create a script to copy all the chunks and rename them to their serialized
    # name produced by split when we splitted the file
	awk '{print "cp '$CHKDIR'/"$1" '$TMPWD'/"$2" "}' $MAPSDIR/$MAPSFILE| grep chk >> script

	bash script

	if [ "$?" != 0 ]
	then
		echo "Error executing copy script"
		exit 1
	fi
	rm script

	cd $TMPWD

	echo "$PWD"
    
    # Final name we are going to rename to
	OUTPUT="$(tail -n1 $MAPSDIR/$MAPSFILE | awk '{print $2}')"

	echo $OUTPUT

    # We grep the MAPSFILE for chk filenames in lines and we print them all in
    # one line so the first `cat` will concatenate all chunks to OUTPUT
	cat $(echo -n $(cat $MAPSDIR/$MAPSFILE|grep chk|awk '{print $2" "}'|tr -d '\n')) > $OUTPUT

    # We check if everything is okay
	sha512sum -c $MAPSDIR/$MAPSFILE
    if [ "$?" != "0" ]; then
        logit "[ERROR]" "Error while checking sums"
        exit 1
    fi
	
	mv $OUTPUT $CURDIR

	rm -rf "$TMPWD"

	rm $CURDIR/tmp_holder
else
	usage
fi