#!/usr/bin/env bash
# Pre-commit: ESLint --fix + Prettier on staged files (via lint-staged).
# Auto-fixable issues are corrected and re-staged before the commit is created.
set -euo pipefail

ROOT="$(git rev-parse --show-toplevel)"
cd "$ROOT"

if [[ "${SKIP_PRECOMMIT_CHECKS:-}" == "1" ]]; then
  echo "⚠ SKIP_PRECOMMIT_CHECKS=1 — skipping pre-commit checks"
  exit 0
fi

staged="$(git diff --cached --name-only --diff-filter=ACM || true)"
if [[ -z "$staged" ]]; then
  exit 0
fi

if ! echo "$staged" | grep -qE '\.(js|jsx|ts|tsx|json|md|css|scss)$'; then
  exit 0
fi

echo "Pre-commit: auto-fixing staged files (ESLint --fix, then Prettier)…"
before="$(git diff --cached --name-only || true)"
pnpm exec lint-staged
after="$(git diff --cached --name-only || true)"

if [[ "$before" != "$after" ]]; then
  echo "   Staging updated after auto-fix (review with git diff --cached if needed)."
fi

echo "✓ Pre-commit auto-fix passed"