#!/bin/sh
# SPDX-License-Identifier: Apache-2.0
# (c) 2024-2025, Konstantin Demin
set -ef

[ -z "${CI_DEBUG}" ] || set -xv

: "${IMAGE_NAME:?}" "${LATEST_TAG:?}"

. .ci/envsh.registry

image_src="docker://${IMAGE_NAME}"

oci_dir="${PWD}/oci-layers"
image_interim="oci:${oci_dir}:$(basename "${IMAGE_NAME}"):${LATEST_TAG}"

rm -rf "${oci_dir}" ; mkdir "${oci_dir}"

r=0

img_copy() {
    skopeo copy --retry 7 --retry-delay 60s --all "$@"
}

while : ; do
    img_copy "${image_src}:${LATEST_TAG}" "${image_interim}" || r=$?
    [ "$r" = 0 ] || break

    echo " -> ${image_src}:latest"
    img_copy "${image_interim}" "${image_src}:latest" || r=$?
    [ "$r" = 0 ] || break

    break
done

rm -rf "${oci_dir}"
exit "$r"