#!/usr/bin/env bash

set -euo pipefail

SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
REPO_ROOT="$(cd "${SCRIPT_DIR}/.." && pwd)"
OUTPUT_PATH="${1:-${REPO_ROOT}/docs/repo-map.md}"

if ! command -v tree >/dev/null 2>&1; then
  echo "error: the 'tree' command is required to regenerate the repo map. Install it (e.g., 'sudo pacman -S tree') and re-run this script." >&2
  exit 1
fi

EXCLUDES='target|\\.git|\\.github|node_modules|dist|images|themes|dev|\\.venv'

TMP_FILE="$(mktemp)"
trap 'rm -f "${TMP_FILE}"' EXIT

pushd "${REPO_ROOT}" >/dev/null
tree -a -L 2 --dirsfirst --prune -I "${EXCLUDES}" > "${TMP_FILE}"
popd >/dev/null

{
  printf '# Repo Map\n\n'
  printf '> Generated by `scripts/gen-repo-map.sh`. Regenerate when the layout changes.\n\n'
  printf '```text\n'
  cat "${TMP_FILE}"
  printf '```\n'
} > "${OUTPUT_PATH}"

echo "Repo map written to ${OUTPUT_PATH}"