'use strict';

const path = require('node:path');

function cloneDirectoryName(remoteUrl) {
  const raw = String(remoteUrl || '').trim().replace(/[?#].*$/, '').replace(/[\\/]+$/, '');
  const segment = raw.split(/[\\/:]/).filter(Boolean).at(-1) || 'repository';
  const name = segment.replace(/\.git$/i, '').replace(/[^a-zA-Z0-9._-]/g, '-');
  // A name made only of dots is not a usable directory. Windows strips trailing
  // dots, so "..." would resolve back to the project root itself and slip past
  // the escape check in resolveCloneTarget below.
  return !name || /^\.+$/.test(name) ? 'repository' : name;
}

function resolveCloneTarget(workspaceRoot, remoteUrl) {
  const root = path.resolve(String(workspaceRoot || ''));
  if (!String(workspaceRoot || '').trim()) throw new Error('A project root is required.');
  const target = path.resolve(root, cloneDirectoryName(remoteUrl));
  const normalize = (value) => process.platform === 'win32' ? value.toLowerCase() : value;
  const normalizedRoot = normalize(root);
  const normalizedTarget = normalize(target);
  if (normalizedTarget === normalizedRoot || !normalizedTarget.startsWith(`${normalizedRoot}${path.sep}`)) {
    throw new Error('Clone target escapes the selected project root.');
  }
  return { root, target, directoryName: path.basename(target) };
}

module.exports = { cloneDirectoryName, resolveCloneTarget };