#!/bin/bash
#
# Copyright (c) 2021 The Flatcar Maintainers.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.

# This script will update an SDK container image and create a new minor version.


set -eu

cd $(dirname "$0")
source sdk_lib/sdk_container_common.sh

os_version="$(get_version_from_versionfile)"
base_sdk_version="$(get_sdk_version_from_versionfile)"
base_sdk_version="$(vernum_to_docker_image_version "${base_sdk_version}")"
new_sdk_version=""

keep="false"
cleanup=""

usage() {
    echo "  $0 - Update SDK container image."
    echo "       Create a new container image based on the current SDK ($base_sdk_version)"
    echo "       with current changes from coreos-overlay and portage-stable."
    echo
    echo "       Just like build_sdk_container_image the resulting container comes in 3 flavours:"
    echo "        1.    flatcar-sdk-all - includes both ARM64 and AMD64 support"
    echo "        2.+3. flatcar-sdk-(amd64|arm64) - only includes support for one target."
    echo "  Usage:"
    echo "  $0  [-k] [-x <script>] <new-sdk-version>"
    echo
    echo "      <new-sdk-version> is the new SDK version to be built."
    echo "      -k           - Keep intermediate container image."
    echo "      -x <script>  - For each resource generated during build (container etc.)"
    echo "                     add a cleanup line to <script> which, when run, will free"
    echo "                     the resource. Useful for CI."
    echo
}
# --


while [ 0 -lt $# ] ; do
    case "$1" in
    -h) usage; exit 0;;
    -k) keep="true";      shift;;
    -x) cleanup="$2";     shift; shift;;
    *)  if [ -z "$new_sdk_version" ] ;  then
            new_sdk_version="$1"; shift
        else
            echo "ERROR: spurious positional parameter '$@'."
            usage
            exit 1
        fi;;
    esac
done

if [ -z "$new_sdk_version" ] ; then
    echo
    echo "ERROR: missing target SDK version."
    echo
    usage
    exit 1
fi
# --

docker_vernum="$(vernum_to_docker_image_version "${new_sdk_version}")"
sdk_build_image="flatcar-sdk-build:${docker_vernum}"

if [ -n "$cleanup" ] ; then
    echo "$docker image rm -f '${sdk_build_image}'" >> "$cleanup"
fi

yell "Creating new SDK container image ${new_sdk_version} from ${base_sdk_version}"
create_versionfile "${new_sdk_version}" "${os_version}"

$docker build -t "${sdk_build_image}" \
    --build-arg BASE="$sdk_container_common_registry/flatcar-sdk-all:${base_sdk_version}" \
    -f sdk_lib/Dockerfile.sdk-update \
    .

for a in all arm64 amd64; do
    yell "Creating '$a' arch SDK image"
    rmarch=""; rmcross=""
    case $a in
        arm64) rmarch="amd64-usr"; rmcross="x86_64-cros-linux-gnu";;
        amd64) rmarch="arm64-usr"; rmcross="aarch64-cros-linux-gnu";;
    esac
    $docker build -t "$sdk_container_common_registry/flatcar-sdk-${a}:${docker_vernum}" \
                 --build-arg VERSION="${docker_vernum}" \
                 --build-arg RMARCH="${rmarch}" \
                 --build-arg RMCROSS="${rmcross}" \
                 -f sdk_lib/Dockerfile.lean-arch \
                 .
done

if ! $keep; then
    yell "Cleaning up intermediate container image"
    $docker rmi flatcar-sdk-build:"${docker_vernum}"
fi