#!/usr/bin/env bash

# TODO make this runnable from anywhere...
#	- prepend paths with './' only if local/relative

BASE_PATH=.


ARCH_BZIP2='bzip2 -v {}'
ARCH_GZIP='gzip -v {}'
# XXX should we cygpath -w all the inputs???

OS="$(uname -s)"
if [[ "$OS" =~ Linux.* ]] ; then
	ARCH_FS='btrfs filesystem defragment -czstd -vf {}'
else
	ARCH_FS='compact /c /exe:lzx {}'
fi

# default...
ARCH=$ARCH_FS


EXT=ARW

# HACK: this is here to avoid using windows find...
PATH=/bin:$PATH



printhelp(){
	echo "Usage: `basename $0` [ARGUMENTS] [PATH]"
	echo
	echo "Arguments:"
	echo "	-h --help	- print this help and exit."
	echo
	echo "	-bz -bzip2	- use bzip2 to compress`[[ $ARCH == $ARCH_BZIP2 ]] && echo " (default)" || echo ""`."
	echo "	-gz -gzip	- use gzip to compress`[[ $ARCH == $ARCH_GZIP ]] && echo " (default)" || echo ""`."
	echo "	-fs		- use filesystem compression`[[ $ARCH == $ARCH_FS ]] && echo " (default)" || echo ""`."
	echo
	echo "	-ext EXT	- set file extension to compress (default: ${EXT})"
	echo "			  NOTE: only one -ext is supported now".
	echo
}

# process args...
while true ; do
	case $1 in
		-h|--help)
			printhelp
			exit
			;;

		# archivers...
		-bz|--bzip2)
			ARCH=$ARCH_BZIP2
			shift
			;;
		-gz|--gzip)
			ARCH=$ARCH_GZIP
			shift
			;;
		-fs)
			ARCH=$ARCH_FS
			shift
			;;

		# extension to compress...
		--ext)
			EXT=$2
			shift
			shift
			;;

		*)
			break
			;;
	esac
done

# get path...
if [ "$1" ] ; then
	BASE_PATH=$1
fi

# check if archiver exists...
if ! which ${ARCH/ *} > /dev/null 2>&1 ; then
	echo "$0: ${ARCH/ *}: command not found." >&2
	exit 1
fi


# do the work...
#find "$BASE_PATH" -name \*.${EXT} -exec ${ARCH} \; \
#	&& echo done.

IFS=$'\n'
ARWs=($(find "$BASE_PATH" -name \*.${EXT}))
COUNT=${#ARWs[@]}
DONE=1
for f in "${ARWs[@]}" ; do
	echo $f
	printf 'Doing: %d/%d\r' $DONE $COUNT
	eval "${ARCH/\{\}/\"$f\"}" > /dev/null
	DONE=$((DONE + 1))
done
echo done.


# vim:set nowrap nospell :