#!/usr/bin/env bash

set -x

APPLIANCE_NAME="Rocky-9-aarch64-minimal"
KICKSTARTER_FILENAME="${APPLIANCE_NAME}.ks"
IMAGE_NAME="${APPLIANCE_NAME}-$(TZ='UTC' date +%Y.%m.%d-%H%M%S).raw"
COMPRESSED_IMAGE_NAME="${IMAGE_NAME}.zst"

if [[ ${EUID} -ne 0 ]]; then
    >&2 echo "$0: error: Please run this script as root"
    exit 1
fi

if ! command -v appliance-creator > /dev/null; then
    >&2 echo "$0: error: unable to find command 'appliance-creator'"
    exit 1
fi

if ! command -v shasum > /dev/null; then
    >&2 echo "$0: error: unable to find command 'shasum'"
    exit 1
fi

{
    appliance-creator \
        --config "${KICKSTARTER_FILENAME}" \
        --name "${APPLIANCE_NAME}" \
        --format raw \
        --no-compress \
        --outdir "${PWD}" \
        --cache "/root/cache" \
        --debug \
        --verbose
        # DO NOT USE THE '--checksum' OPTION BECAUSE, FOR SOME REASON
        # UTF8 ERRORS ARE GENERATED DURING IMAGE CREATION
        # AND THE IMAGE CREATION STEP FAILS
        #--checksum \

    if [[ -d "${APPLIANCE_NAME}" ]]; then

        pushd "${APPLIANCE_NAME}" || exit 1
        mv -v -f "${APPLIANCE_NAME}-sda.raw" "${IMAGE_NAME}"
        zstd -9 -z "${IMAGE_NAME}"

        sha256sum "${IMAGE_NAME}" > "${IMAGE_NAME}.sha256"
        sha512sum "${IMAGE_NAME}" > "${IMAGE_NAME}.sha512"
        sha256sum "${COMPRESSED_IMAGE_NAME}" > "${COMPRESSED_IMAGE_NAME}.sha256"
        sha512sum "${COMPRESSED_IMAGE_NAME}" > "${COMPRESSED_IMAGE_NAME}.sha512"
        popd || exit 1

        echo 'DONE'
        echo "Please chown '${APPLIANCE_NAME}/' if necessary"
    fi
} 1> "${APPLIANCE_NAME}.1.stdout.log" 2> "${APPLIANCE_NAME}.2.stderr.log"