#!/bin/bash -e

bv=$(buildah --version)
if (( $? != 0 )); then
    echo install buildah 1.19.3 or later
    exit 1
fi

# translate to array of version components
bv="${bv#buildah version }"
bv="${bv% (*}"
bv=(${bv//./ })

maj=${bv[0]}
min=${bv[1]}
patch=${bv[2]}

ok=$(( maj > 1 || ( maj == 1 && min > 19 ) || ( maj == 1 && min == 19 && patch >= 3 ) ))

if (( ! ok )); then 
    echo install buildah 1.19.3 or later
    exit 1
fi

archs=(amd64 arm64 s390x)

if [[ ! -f  /proc/sys/fs/binfmt_misc/qemu-aarch64 || ! -f /proc/sys/fs/binfmt_misc/qemu-s390x ]]; then
    echo install qemu-user-static
    exit 1
fi

buildah manifest create "$(<tools/toolchain/image)"


for arch in "${archs[@]}"; do
    image_id_file="$(mktemp)"
    buildah bud --arch="$arch" --no-cache --pull -f tools/toolchain/Dockerfile --iidfile "$image_id_file"
    buildah manifest add --all "$(<tools/toolchain/image)" "$(<$image_id_file)"
    rm "$image_id_file"
done

echo "Done building $(<tools/toolchain/image). You can now test it, and push with"
echo ""
echo "    podman manifest push --all $(<tools/toolchain/image) docker://$(<tools/toolchain/image)"