#!/usr/bin/env bash
set -euo pipefail

root=$(cd "$(dirname "${BASH_SOURCE[0]}")/../.." && pwd)
tmp=$(mktemp -d)
trap 'rm -rf "$tmp"' EXIT

script=$root/scripts/cluster/run-production-acceptance.sh
awk '
  /^is_release_ancestor\(\)/ { capture = 1 }
  capture && /^create_and_activate_run\(\)/ { exit }
  capture { print }
' "$script" >"$tmp/is-release-ancestor.sh"

# shellcheck source=/dev/null
source "$tmp/is-release-ancestor.sh"

cluster_root=$tmp/repository
git init -q "$cluster_root"
git -C "$cluster_root" config user.name 'Acceptance Script Test'
git -C "$cluster_root" config user.email 'acceptance-script-test@example.invalid'
git -C "$cluster_root" commit --allow-empty -qm first
first=$(git -C "$cluster_root" rev-parse HEAD)
git -C "$cluster_root" commit --allow-empty -qm second
git -C "$cluster_root" commit --allow-empty -qm third
third=$(git -C "$cluster_root" rev-parse HEAD)

is_release_ancestor "$first" "$third"
if is_release_ancestor "$third" "$first"; then
  echo 'descendant release was accepted as an ancestor' >&2
  exit 1
fi
if is_release_ancestor invalid "$third"; then
  echo 'invalid release identifier was accepted as an ancestor' >&2
  exit 1
fi

echo 'production_acceptance_script_tests=PASS'