#!/bin/sh

target=aarch64-unknown-linux-gnu

MIRROR=http://mirror.leaseweb.com/gentoo
URLPATH=releases/amd64/autobuilds
GENTOO_KEY=13EBBDBEDE7A12775DFDB1BABB572E0E2D182910
GENTOO_KEYSERVER=hkps://keys.gentoo.org

target=aarch64-unknown-linux-gnu
stage3=amd64-nomultilib-openrc
while [ $# -gt 0 ]; do
    case "$1" in
    -t|--target)
        shift
        target="$1"
        ;;
    -b|--base)
        shift
        stage3="$1"
        ;;
    *)
        printf 'Unknown argument: %s\n' "$1" >&2
        exit 2
        ;;
    esac
done

set -e

gpg --keyserver ${GENTOO_KEYSERVER} --recv-keys ${GENTOO_KEY}
curl -fLO "${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 "${MIRROR}/${URLPATH}/${tarball}"
fi
if [ ! -f "${tarball##*/}.asc" ]; then
    curl -fLO "${MIRROR}/${URLPATH}/${tarball}.asc"
fi
gpg --verify "${tarball##*/}.asc"

cid=$(buildah from scratch)
buildah add ${cid} "${tarball##*/}"
buildah run \
    --mount type=cache,target=/var/db/repos/gentoo \
    --mount type=cache,target=/var/cache\
    -- ${cid} \
    sh -s - "${target}" \
    < build.sh \
|| {
    rc=$?
    buildah rm ${cid}
    exit $rc
}

buildah config \
    --add-history \
    --cmd /bin/bash \
    --label target=${target} \
    ${cid}
buildah commit --rm --squash  ${cid} aimee-os.org/build/cross-${target}