#!/usr/bin/env sh
# ============================================================================
# POST-REWRITE HOOK: Invalidate caches after history rewrite
# ============================================================================
# Triggered by: git rebase, git commit --amend, git filter-branch
# Purpose: Clear the license year cache since git log dates may have changed.
# ============================================================================

REPO_ROOT=$(git rev-parse --show-toplevel 2>/dev/null)
if [ -z "$REPO_ROOT" ]; then
  exit 0
fi

CACHE_FILE="$REPO_ROOT/.git/license-year-cache"
if [ -f "$CACHE_FILE" ]; then
  rm -f "$CACHE_FILE"
  echo "License year cache invalidated (history rewritten)."
fi