#!/bin/sh
# Git pre-commit hook: block commits that stage source files without updating README.md + CLAUDE.md.
# Installed to .git/hooks/pre-commit by scripts/install-hooks.sh.

STAGED=$(git diff --cached --name-only)

# Only enforce when at least one source file is changing
SOURCE_CHANGED=$(echo "$STAGED" | grep -E '\.(py|js|html|css)$' | grep -v '^tests/' | head -1)
[ -z "$SOURCE_CHANGED" ] && exit 0

README_STAGED=$(echo "$STAGED" | grep '^README\.md$')
CLAUDE_STAGED=$(echo "$STAGED" | grep '^CLAUDE\.md$')

if [ -z "$README_STAGED" ] || [ -z "$CLAUDE_STAGED" ]; then
  echo ""
  echo "  Commit blocked: source files staged but docs not updated"
  echo ""
  [ -z "$README_STAGED" ] && echo "  • README.md not staged"
  [ -z "$CLAUDE_STAGED" ] && echo "  • CLAUDE.md not staged"
  echo ""
  echo "  Update both to reflect your changes, git add them, then retry."
  echo "  Bypass with:  git commit --no-verify"
  echo ""
  exit 1
fi

exit 0