/**
 * @file send-file.js
 * @description `res.sendFile` / `res.download` for an absolute path the server
 * chose itself, with Express 4's dotfile rule. Express 5 (send 1.x) refuses
 * with 404 any absolute path that has a dot-segment ANYWHERE — `~/.claude/…`
 * (the plugin cache, the default data dir), `~/.local/…` — where Express 4
 * looked only at the file's own name. Sending the basename against its
 * directory as `root` makes send check that name alone again, so a dotfile is
 * still refused and a dotted parent directory is not.
 * @author Nguyễn Ngọc Trí Vĩ <vinnt@smartgift.vn>
 */

const path = require("path");

/** `res.sendFile(abs, opts, cb)` with only the basename subject to `dotfiles`. */
function sendFile(res, abs, opts, cb) {
  if (typeof opts === "function") [cb, opts] = [opts, undefined];
  return res.sendFile(path.basename(abs), { ...opts, root: path.dirname(abs) }, cb);
}

/** `res.download(abs, name)` with only the basename subject to `dotfiles`. */
function download(res, abs, name, cb) {
  return res.download(path.basename(abs), name, { root: path.dirname(abs) }, cb);
}

module.exports = { sendFile, download };