DEPENDS=$(cat_file_merge "ROOTFS" | sort -u)

copy_rootfs_files() {
	local pkgdir="$1"
	local fname
	local dname

	cut -d' ' -f1 "$pkgdir/rootfs_files.txt" | while read fname; do
		if [ ! -e "./$fname" ]; then
			dname=$(dirname $fname)

			if [ -d "$pkgdir/$fname" ]; then
				mkdir -p "./$fname"
			else
				[ "$dname" == "." ] || mkdir -p "./$dname";
				cp -d "$pkgdir/$fname" "./$fname"
			fi
		fi
	done
}

build() {
	local SOURCE="$1"
	local DEPLOY="$2"

	# setup skeleton
	mkdir -pv ${PKGBUILDDIR}/{bin,dev,sys,proc,tmp,run,boot,usr,mnt,share}
	mkdir -pv ${PKGBUILDDIR}/cfg/{preserve,overlay}
	mkdir -pv ${PKGBUILDDIR}/etc/{profile.d,skel}
	mkdir -pv ${PKGBUILDDIR}/var/lib
	mkdir -pv ${PKGBUILDDIR}/lib/libexec

	cp -r "$SCRIPTDIR/pkg/$PKGNAME/etc" "$PKGBUILDDIR"
	cp -r "$SCRIPTDIR/pkg/$PKGNAME/lib" "$PKGBUILDDIR"
	cp "$SCRIPTDIR/pkg/$PKGNAME/rootfs_files.txt" "$DEPLOY/pseudo"

	# version info
	local fname=$(echo "${OS_NAME}-release" | tr '[:upper:]' '[:lower:]')

	echo $OS_RELEASE > $PKGBUILDDIR/etc/$fname

	echo "etc/$fname m 644 0 0" >> "$DEPLOY/pseudo"

	# local config files
	fname=$(file_path_override "resolv.conf")

	if [ ! -z "$fname" ]; then
		cp "$fname" "./etc/resolv.conf"
		echo "etc/resolv.conf m 644 0 0" >> "$DEPLOY/pseudo"
	fi

	# gather rootfs dependencies
	dependencies | tsort | tac | \
		grep -v "$PKGNAME" > "$PKGBUILDDIR/etc/packages"

	echo "etc/packages m 644 0 0" >> "$DEPLOY/pseudo"

	while read pkgname; do
		fname="$PKGDEPLOYDIR/$pkgname/rootfs_files.txt"
		[ -e "$fname" ] || continue;

		copy_rootfs_files "$PKGDEPLOYDIR/$pkgname"
		cat "$fname" >> "$DEPLOY/pseudo"
	done < "$PKGBUILDDIR/etc/packages"

	# setup root home directory
	cp -r "$PKGBUILDDIR/etc/skel" "$PKGBUILDDIR/usr/root"

	echo "usr/root m 750 0 0" >> "$DEPLOY/pseudo"

	find "./usr/root" -exec stat {} --printf="%n m %a 0 0\\n" \; | \
		sed 's#^./##g' | tail -n +2  >> "$DEPLOY/pseudo"

	# move configuration to preserve directory
	mv "$PKGBUILDDIR/etc" "$PKGBUILDDIR/cfg/preserve/etc"
	mv "$PKGBUILDDIR/usr" "$PKGBUILDDIR/cfg/preserve/usr"
	mv "$PKGBUILDDIR/var/lib" "$PKGBUILDDIR/cfg/preserve/var_lib"
	rm -rf "$PKGBUILDDIR/var"

	mkdir -p ${PKGBUILDDIR}/{etc,var,usr}

	sed -i 's#etc/#cfg/preserve/etc/#g' "$DEPLOY/pseudo"
	sed -i 's#var/lib/#cfg/preserve/var_lib/#g' "$DEPLOY/pseudo"
	sed -i 's#usr/#cfg/preserve/usr/#g' "$DEPLOY/pseudo"
}

deploy() {
	local SOURCE="$1"
	local DEPLOY="$2"

	mksquashfs "$PKGBUILDDIR" "$DEPLOY/rootfs.img" -comp xz \
		-no-progress -no-xattrs -pf "$DEPLOY/pseudo"

	rm "$DEPLOY/pseudo"
}

check_update() {
	return
}