#!/usr/bin/env bash
# Prints the sanitized, collision-resistant cache key for a raw git ref.
# Thin CLI wrapper over cache_key() in cache-lib.sh, kept as its own entry
# point so a consuming workflow (or an out-of-band cleanup job, e.g. one
# reclaiming a deleted branch's directory) can resolve the same key this
# action uses without reimplementing the algorithm. Reimplementing it is the
# one thing that must never happen: two spellings of the key silently
# misclassify every directory on the volume.
#
# Usage: branch-cache-key.sh "<raw-ref>"
set -euo pipefail
. "$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)/cache-lib.sh"

if [ $# -ne 1 ] || [ -z "$1" ]; then
  echo "::error::branch-cache-key.sh: expected exactly one non-empty argument (the raw ref)" >&2
  exit 1
fi
cache_key "$1"