# $1 should be URL to compressed tarball for which .DIGEST.asc file exists
#setopt warncreateglobal
local destdir digest_uri digest metalink
local -a files
destdir=${2:-.}

digest_uri=${1}.DIGESTS.asc
#digest_uri=$( ${0:h}/resolve_txt_uri $1 ).DIGESTS.asc || exit $?

digest=$( wget -q -O - $digest_uri ) || return $?
gpg --verify --batch <<<$digest || return $?
digest=$( sed -n '/^-----BEGIN PGP SIGNED MESSAGE-----$/,/^-----BEGIN PGP SIGNATURE-----$/p' <<<$digest ) || return $?
files=( $( gawk <<<$digest -f $FSB_SCRIPTS_DIR/list_digest_files.awk | grep -Ee '\.tar(\.(gz|bz2|lzma|xz))?$' ) )

if [[ $#files != 1 ]]; then
	fsb_error "got $#files tarballs inside digest, one expected"
	return 1
fi
metalink=$( gawk -v urls=${digest_uri:h} -f $FSB_SCRIPTS_DIR/digest_to_metalink.awk <<<$digest ) || return $?

aria2c --check-integrity=true \
	--continue=true \
	--dir=$destdir \
	-l /dev/stderr \
	--quiet=true \
	--log-level=notice \
	-M - <<<$metalink || return $?

echo ${destdir}/${files}