import assert from 'node:assert/strict';
import { mkdtemp, mkdir, copyFile, rm } from 'node:fs/promises';
import os from 'node:os';
import path from 'node:path';
import { spawnSync } from 'node:child_process';
import test from 'node:test';
import shellVerification from '../src/shared/shell-verification.cjs';

const { bashSyntaxCheckInvocation, normalizeRelativePosixPath } = shellVerification;

test('Bash syntax validation keeps Windows project roots in cwd and passes a relative POSIX path', () => {
  const invocation = bashSyntaxCheckInvocation('C:\\Projects\\ForgeFlow');
  assert.equal(invocation.command, 'bash');
  assert.deepEqual(invocation.args, ['-n', 'examples/server/forgeflow-deploy']);
  assert.equal(invocation.options.cwd, 'C:\\Projects\\ForgeFlow');
  assert.equal(invocation.args[1].includes('\\'), false);
  assert.equal(/^[A-Za-z]:/.test(invocation.args[1]), false);
});

test('Shell validation refuses absolute and escaping script paths', () => {
  assert.throws(() => normalizeRelativePosixPath('C:\\Projects\\ForgeFlow\\script.sh'), /must be relative/);
  assert.throws(() => normalizeRelativePosixPath('/tmp/script.sh'), /must be relative/);
  assert.throws(() => normalizeRelativePosixPath('../script.sh'), /may not escape/);
});

test('Bash syntax validation works from a project root containing spaces', async (t) => {
  if (spawnSync('bash', ['--version'], { encoding: 'utf8' }).status !== 0) {
    t.skip('Bash is not available in this environment.');
    return;
  }
  const tempBase = await mkdtemp(path.join(os.tmpdir(), 'forge flow verify '));
  try {
    const relativeDirectory = path.join(tempBase, 'examples', 'server');
    await mkdir(relativeDirectory, { recursive: true });
    await copyFile(new URL('../examples/server/forgeflow-deploy', import.meta.url), path.join(relativeDirectory, 'forgeflow-deploy'));
    const invocation = bashSyntaxCheckInvocation(tempBase);
    const result = spawnSync(invocation.command, invocation.args, invocation.options);
    assert.equal(result.status, 0, result.stderr);
  } finally {
    try {
      await rm(tempBase, { recursive: true, force: true, maxRetries: 20, retryDelay: 100 });
    } catch (error) {
      // Git Bash on Windows can retain a short-lived working-directory handle
      // after bash -n exits. Do not fail a successful syntax test solely because
      // Windows delayed releasing that temporary directory.
      if (!['EBUSY', 'EPERM', 'ENOTEMPTY'].includes(error?.code)) throw error;
    }
  }
});