/**
 * Direct subprocess tests for scripts/hooks/plugin-hook-bootstrap.js.
 */

'use strict';

const assert = require('assert');
const fs = require('fs');
const os = require('os');
const path = require('path');
const { spawnSync } = require('child_process');

const SCRIPT = path.join(__dirname, '..', '..', 'scripts', 'hooks', 'plugin-hook-bootstrap.js');

function createTempDir() {
  return fs.mkdtempSync(path.join(os.tmpdir(), 'plugin-hook-bootstrap-'));
}

function cleanup(dirPath) {
  fs.rmSync(dirPath, { recursive: true, force: true });
}

function writeFile(root, relativePath, content) {
  const filePath = path.join(root, relativePath);
  fs.mkdirSync(path.dirname(filePath), { recursive: true });
  fs.writeFileSync(filePath, content, 'utf8');
  return filePath;
}

function run(args = [], options = {}) {
  return spawnSync(process.execPath, [SCRIPT, ...args], {
    input: options.input || '',
    encoding: 'utf8',
    env: {
      ...process.env,
      CLAUDE_PLUGIN_ROOT: options.root || '',
      ECC_PLUGIN_ROOT: options.eccRoot || '',
      ...(options.env || {}),
    },
    cwd: options.cwd || process.cwd(),
    timeout: 10000,
  });
}

function test(name, fn) {
  try {
    fn();
    console.log(`  PASS ${name}`);
    return true;
  } catch (error) {
    console.log(`  FAIL ${name}`);
    console.log(`    Error: ${error.message}`);
    return false;
  }
}

function runTests() {
  console.log('\n=== Testing plugin-hook-bootstrap.js ===\n');

  let passed = 0;
  let failed = 0;

  if (test('passes stdin through when required bootstrap inputs are missing', () => {
    const result = run([], { input: '{"ok":true}' });

    assert.strictEqual(result.status, 0);
    assert.strictEqual(result.stdout, '{"ok":true}');
    assert.strictEqual(result.stderr, '');
  })) passed++; else failed++;

  if (test('node mode runs target script with plugin root environment', () => {
    const root = createTempDir();
    try {
      writeFile(root, path.join('scripts', 'hook.js'), `
const fs = require('fs');
const raw = fs.readFileSync(0, 'utf8');
process.stdout.write(JSON.stringify({
  raw,
  args: process.argv.slice(2),
  claudeRoot: process.env.CLAUDE_PLUGIN_ROOT,
  eccRoot: process.env.ECC_PLUGIN_ROOT,
}));
`);

      const result = run(['node', path.join('scripts', 'hook.js'), 'one', 'two'], {
        root,
        input: 'payload',
      });
      const parsed = JSON.parse(result.stdout);

      assert.strictEqual(result.status, 0, result.stderr);
      assert.strictEqual(parsed.raw, 'payload');
      assert.deepStrictEqual(parsed.args, ['one', 'two']);
      assert.strictEqual(parsed.claudeRoot, root);
      assert.strictEqual(parsed.eccRoot, root);
    } finally {
      cleanup(root);
    }
  })) passed++; else failed++;

  if (test('node mode passes original stdin when child exits cleanly without stdout', () => {
    const root = createTempDir();
    try {
      writeFile(root, path.join('scripts', 'silent.js'), 'process.exit(0);\n');

      const result = run(['node', path.join('scripts', 'silent.js')], {
        root,
        input: 'raw-input',
      });

      assert.strictEqual(result.status, 0);
      assert.strictEqual(result.stdout, 'raw-input');
    } finally {
      cleanup(root);
    }
  })) passed++; else failed++;

  if (test('node mode forwards child stdout and exit status for blocking hooks', () => {
    const root = createTempDir();
    try {
      writeFile(root, path.join('scripts', 'block.js'), `
process.stdout.write('blocked output');
process.stderr.write('blocked stderr\\n');
process.exit(2);
`);

      const result = run(['node', path.join('scripts', 'block.js')], {
        root,
        input: 'raw-input',
      });

      assert.strictEqual(result.status, 2);
      assert.strictEqual(result.stdout, 'blocked output');
      assert.strictEqual(result.stderr, 'blocked stderr\n');
    } finally {
      cleanup(root);
    }
  })) passed++; else failed++;

  if (test('node mode leaves stdout empty for nonzero child without stdout', () => {
    const root = createTempDir();
    try {
      writeFile(root, path.join('scripts', 'fail.js'), `
process.stderr.write('failure stderr\\n');
process.exit(7);
`);

      const result = run(['node', path.join('scripts', 'fail.js')], {
        root,
        input: 'raw-input',
      });

      assert.strictEqual(result.status, 7);
      assert.strictEqual(result.stdout, '');
      assert.strictEqual(result.stderr, 'failure stderr\n');
    } finally {
      cleanup(root);
    }
  })) passed++; else failed++;

  if (test('shell mode runs target script through an available shell', () => {
    const root = createTempDir();
    try {
      writeFile(root, path.join('scripts', 'hook.sh'), [
        'input=$(cat)',
        'printf "shell:%s:%s" "$1" "$input"',
        '',
      ].join('\n'));

      const result = run(['shell', path.join('scripts', 'hook.sh'), 'arg'], {
        root,
        input: 'payload',
        env: fs.existsSync('/bin/sh') ? { BASH: '/bin/sh' } : {},
      });

      assert.strictEqual(result.status, 0, result.stderr);
      assert.strictEqual(result.stdout, 'shell:arg:payload');
    } finally {
      cleanup(root);
    }
  })) passed++; else failed++;

  if (test('shell mode fails open when no shell runtime is available', () => {
    const root = createTempDir();
    try {
      writeFile(root, path.join('scripts', 'hook.sh'), 'printf unreachable\n');

      const result = run(['shell', path.join('scripts', 'hook.sh')], {
        root,
        input: 'raw-input',
        env: { PATH: '', BASH: '' },
      });

      assert.strictEqual(result.status, 0);
      assert.strictEqual(result.stdout, 'raw-input');
      assert.ok(result.stderr.includes('shell runtime unavailable'));
    } finally {
      cleanup(root);
    }
  })) passed++; else failed++;

  if (test('rejects target paths that escape the plugin root', () => {
    const root = createTempDir();
    try {
      const result = run(['node', path.join('..', 'outside.js')], {
        root,
        input: 'raw-input',
      });

      assert.strictEqual(result.status, 0);
      assert.strictEqual(result.stdout, 'raw-input');
      assert.ok(result.stderr.includes('Path traversal rejected'));
    } finally {
      cleanup(root);
    }
  })) passed++; else failed++;

  if (test('unknown mode fails open with stderr warning', () => {
    const root = createTempDir();
    try {
      const result = run(['python', 'hook.py'], {
        root,
        input: 'raw-input',
      });

      assert.strictEqual(result.status, 0);
      assert.strictEqual(result.stdout, 'raw-input');
      assert.ok(result.stderr.includes('unknown bootstrap mode: python'));
    } finally {
      cleanup(root);
    }
  })) passed++; else failed++;

  if (test('missing node target returns child failure diagnostics', () => {
    const root = createTempDir();
    try {
      const result = run(['node', path.join('scripts', 'missing.js')], {
        root,
        input: 'raw-input',
      });

      assert.strictEqual(result.status, 1);
      assert.strictEqual(result.stdout, '');
      assert.ok(result.stderr.includes('Cannot find module'));
    } finally {
      cleanup(root);
    }
  })) passed++; else failed++;

  console.log(`\nResults: Passed: ${passed}, Failed: ${failed}`);
  process.exit(failed > 0 ? 1 : 0);
}

runTests();