/**
 * Keep tests independent of tools installed on a Windows developer machine.
 *
 * Linux CI never sees these leaks, so they surface only as local failures.
 */

'use strict';

const fs = require('fs');
const path = require('path');

// On Windows, spawning a bare `claude` resolves only .com/.exe on PATH, never
// .cmd. A natively installed claude.exe therefore wins over a test's fake
// claude.cmd even when the fake's directory comes first on PATH.
const SHADOWING_CLAUDE_BINARIES = ['claude.com', 'claude.exe'];

/**
 * Drop PATH entries holding a real Claude binary that would shadow a fake
 * `claude.cmd` launcher. A no-op off Windows, where PATH order is honoured.
 */
function withoutShadowingClaude(pathValue, platform = process.platform) {
  if (platform !== 'win32') return pathValue || '';
  return String(pathValue || '')
    .split(path.win32.delimiter)
    .filter(dir => dir && !SHADOWING_CLAUDE_BINARIES.some(name => fs.existsSync(path.join(dir, name))))
    .join(path.win32.delimiter);
}

/**
 * Name an archive relative to the directory tar runs in, with forward slashes.
 * GNU tar, which Git for Windows puts first on PATH, reads an archive argument
 * containing a colon (C:\...) as a host:path remote spec; bsdtar does not.
 */
function toRelativeTarPath(cwd, archivePath) {
  return path.relative(cwd, archivePath).split(path.sep).join('/');
}

module.exports = { withoutShadowingClaude, toRelativeTarPath };