create-github-release

#!/bin/bash
set -euo pipefail

if [[ $# -lt 1 || $# -gt 3 || $1 = -h || $1 = --help ]]; then
    {
    echo "Usage: $0 NEW-TAG [SAME-CHANNEL-OLD-TAG] [OTHER-CHANNEL-OLD-TAG]"
    echo
    echo "Creates a draft flatcar/scripts release in GitHub for the given new"
    echo "tag. If the old tag(s) are not given, they are automatically detected"
    echo "using logic from the scripts repo. The GitHub CLI (gh) is required."
    } >&2
    exit 1
fi

NEW=$1
shift

if [[ $# -eq 0 ]]; then
    declare _unused
    declare -a _unused_a show_changes_params var_names=(
        _unused_a _unused_a
        _unused_a _unused_a
        _unused_a show_changes_params
        _unused
    )

    # Any board type can be used here as we don't do per-board releases.
    . "${SCRIPTS_REPO:-scripts}"/ci-automation/image_changes.sh
    prepare_env_vars_and_params_for_release amd64 "${NEW}" "${var_names[@]}"
    declare "${show_changes_params[@]}"
    set -- "${NEW_CHANNEL}-${NEW_CHANNEL_PREV_VERSION}"
    [[ ${OLD_CHANNEL} != "${NEW_CHANNEL}" ]] && set -- "${@}" "${OLD_CHANNEL}-${OLD_VERSION}"
fi

BODY=$(mktemp)
trap 'rm -f -- "${BODY}"' EXIT

for OLD; do
    "${0%/*}"/show-changes "${OLD}" "${NEW}" >> "${BODY}"
    shift
    [[ ${1-} ]] && printf '\n\n' >> "${BODY}"
done

gh release create --draft --verify-tag --latest --repo https://github.com/flatcar/scripts --title "${NEW}" --notes-file "${BODY}" "${NEW}"