#!/bin/sh

: "${GENTOO_MIRROR:=http://mirror.leaseweb.com/gentoo}"
URLPATH=releases/amd64/autobuilds
GENTOO_KEY=13EBBDBEDE7A12775DFDB1BABB572E0E2D182910
GENTOO_KEYSERVER=hkps://keys.gentoo.org

stage3="${1:-amd64-nomultilib-openrc}"

set -e

gpg --keyserver ${GENTOO_KEYSERVER} --recv-keys ${GENTOO_KEY}
curl -fLO "${GENTOO_MIRROR}/${URLPATH}/latest-stage3-${stage3}.txt"
gpg --verify "latest-stage3-${stage3}.txt"

tarball=$(gpg --decrypt "latest-stage3-${stage3}.txt" | awk '$1!="#"{print $1}')
if [ ! -f "${tarball##*/}" ]; then
    curl -fLO "${GENTOO_MIRROR}/${URLPATH}/${tarball}"
fi
if [ ! -f "${tarball##*/}.asc" ]; then
    curl -fLO "${GENTOO_MIRROR}/${URLPATH}/${tarball}.asc"
fi
gpg --verify "${tarball##*/}.asc"
echo "${tarball##*/}"