'use strict';

const assert = require('node:assert/strict');
const test = require('node:test');
const { listDirectoryWithCwd } = require('../../src/ftp');

test('FTP directory listing uses an exact CWD and restores the prior directory', async () => {
  const calls = [];
  const client = {
    pwd: async () => '/previous',
    cd: async directory => { calls.push(['cd', directory]); },
    list: async () => { calls.push(['list']); return [{ name: 'app0' }]; },
  };
  const result = await listDirectoryWithCwd(client, '/mnt/sandbox/PPSA17330_000');
  assert.deepEqual(result, [{ name: 'app0' }]);
  assert.deepEqual(calls, [
    ['cd', '/mnt/sandbox/PPSA17330_000'],
    ['list'],
    ['cd', '/previous'],
  ]);
});

test('FTP directory listing restores the prior directory after LIST failure', async () => {
  const calls = [];
  const client = {
    pwd: async () => '/previous',
    cd: async directory => { calls.push(['cd', directory]); },
    list: async () => { calls.push(['list']); throw new Error('LIST rejected'); },
  };
  await assert.rejects(() => listDirectoryWithCwd(client, '/mnt/sandbox'), /LIST rejected/);
  assert.deepEqual(calls.at(-1), ['cd', '/previous']);
});