import { expect, tap } from '@git.zone/tstest/tapbundle';
import * as smartshell from '../ts/index.js';
import * as fs from 'fs';
import * as os from 'os';
import * as path from 'path';

tap.test('execSpawn should execute commands with args array (shell:false)', async () => {
  const testSmartshell = new smartshell.Smartshell({
    executor: 'bash',
    sourceFilePaths: [],
  });
  
  // Test basic command with args
  const result = await testSmartshell.execSpawn('echo', ['Hello', 'World']);
  expect(result.exitCode).toEqual(0);
  expect(result.stdout).toContain('Hello World');
});

tap.test('execSpawn should run in the configured cwd', async () => {
  const testSmartshell = new smartshell.Smartshell({
    executor: 'bash',
    sourceFilePaths: [],
  });
  const tmpDir = fs.mkdtempSync(path.join(os.tmpdir(), 'smartshell-cwd-'));

  try {
    const result = await testSmartshell.execSpawn('node', ['-e', 'console.log(process.cwd())'], {
      cwd: tmpDir,
      silent: true,
    });
    expect(result.exitCode).toEqual(0);
    expect(result.stdout.trim()).toEqual(tmpDir);
  } finally {
    fs.rmSync(tmpDir, { recursive: true, force: true });
  }
});

tap.test('execSilent should run shell commands in the configured cwd', async () => {
  const testSmartshell = new smartshell.Smartshell({
    executor: 'bash',
    sourceFilePaths: [],
  });
  const tmpDir = fs.mkdtempSync(path.join(os.tmpdir(), 'smartshell-shell-cwd-'));

  try {
    const result = await testSmartshell.execSilent('pwd', { cwd: tmpDir });
    expect(result.exitCode).toEqual(0);
    expect(result.stdout.trim()).toEqual(tmpDir);
  } finally {
    fs.rmSync(tmpDir, { recursive: true, force: true });
  }
});

tap.test('execSpawn should handle command not found errors', async () => {
  const testSmartshell = new smartshell.Smartshell({
    executor: 'bash',
    sourceFilePaths: [],
  });
  
  let errorThrown = false;
  try {
    await testSmartshell.execSpawn('nonexistentcommand123', ['arg1']);
  } catch (error) {
    errorThrown = true;
    expect((error as NodeJS.ErrnoException).code).toEqual('ENOENT');
  }
  expect(errorThrown).toBeTrue();
});

tap.test('execSpawn should properly escape arguments', async () => {
  const testSmartshell = new smartshell.Smartshell({
    executor: 'bash',
    sourceFilePaths: [],
  });
  
  // Test that shell metacharacters are treated as literals
  const result = await testSmartshell.execSpawn('echo', ['$HOME', '&&', 'ls']);
  expect(result.exitCode).toEqual(0);
  // Should output literal strings, not expanded/executed
  expect(result.stdout).toContain('$HOME && ls');
});

tap.test('execSpawn streaming should work', async () => {
  const testSmartshell = new smartshell.Smartshell({
    executor: 'bash',
    sourceFilePaths: [],
  });
  
  const streaming = await testSmartshell.execSpawnStreaming('echo', ['Streaming test']);
  const result = await streaming.finalPromise;
  expect(result.exitCode).toEqual(0);
  expect(result.stdout).toContain('Streaming test');
});

tap.test('execSpawn interactive control should work', async (tools) => {
  const testSmartshell = new smartshell.Smartshell({
    executor: 'bash',
    sourceFilePaths: [],
  });
  
  const interactive = await testSmartshell.execSpawnInteractiveControl('cat', []);
  
  await interactive.sendLine('Input line');
  interactive.endInput();
  
  const result = await interactive.finalPromise;
  expect(result.exitCode).toEqual(0);
  expect(result.stdout).toContain('Input line');
});

tap.test('execSpawn should capture stderr', async () => {
  const testSmartshell = new smartshell.Smartshell({
    executor: 'bash',
    sourceFilePaths: [],
  });
  
  // ls on non-existent directory should produce stderr
  const result = await testSmartshell.execSpawn('ls', ['/nonexistent/directory/path']);
  expect(result.exitCode).not.toEqual(0);
  expect(result.stderr).toBeTruthy();
  expect(result.stderr).toContain('No such file or directory');
});

tap.test('execSpawn with timeout should terminate process', async () => {
  const testSmartshell = new smartshell.Smartshell({
    executor: 'bash',
    sourceFilePaths: [],
  });
  
  const start = Date.now();
  const result = await testSmartshell.execSpawn('sleep', ['10'], { timeout: 100 });
  const duration = Date.now() - start;
  
  // Process should be terminated by timeout
  expect(duration).toBeLessThan(500);
  expect(result.exitCode).not.toEqual(0);
  expect(result.signal).toBeTruthy(); // Should have been killed by signal
});

tap.test('execSpawn timeout should terminate the spawned process tree', async () => {
  const testSmartshell = new smartshell.Smartshell({
    executor: 'bash',
    sourceFilePaths: [],
  });
  const markerPath = path.join(os.tmpdir(), `smartshell-spawn-timeout-${process.pid}-${Date.now()}`);

  try {
    const result = await testSmartshell.execSpawn(
      'bash',
      ['-c', `(sleep 0.6; touch "${markerPath}") & wait`],
      { timeout: 100, silent: true },
    );
    await new Promise((resolve) => setTimeout(resolve, 800));

    expect(result.exitCode).not.toEqual(0);
    expect(fs.existsSync(markerPath)).toBeFalse();
  } finally {
    fs.rmSync(markerPath, { force: true });
  }
});

tap.test('exec timeout should terminate the shell process tree', async () => {
  const testSmartshell = new smartshell.Smartshell({
    executor: 'bash',
    sourceFilePaths: [],
  });
  const markerPath = path.join(os.tmpdir(), `smartshell-shell-timeout-${process.pid}-${Date.now()}`);

  try {
    const result = await testSmartshell.execSilent(`(sleep 0.6; touch "${markerPath}") & wait`, {
      timeout: 100,
    });
    await new Promise((resolve) => setTimeout(resolve, 800));

    expect(result.exitCode).not.toEqual(0);
    expect(fs.existsSync(markerPath)).toBeFalse();
  } finally {
    fs.rmSync(markerPath, { force: true });
  }
});

tap.test('execSpawn with maxBuffer should truncate output', async () => {
  const testSmartshell = new smartshell.Smartshell({
    executor: 'bash',
    sourceFilePaths: [],
  });
  
  // Generate large output
  const result = await testSmartshell.execSpawn('bash', ['-c', 'for i in {1..1000}; do echo "Line $i with some padding text to make it longer"; done'], {
    maxBuffer: 1024, // Very small buffer
  });
  
  expect(result.exitCode).toEqual(0);
  expect(result.stdout).toContain('[Output truncated - exceeded maxBuffer]');
});

tap.test('execSpawn with onData callback should stream data', async (tools) => {
  const testSmartshell = new smartshell.Smartshell({
    executor: 'bash',
    sourceFilePaths: [],
  });
  
  let dataReceived = '';
  const result = await testSmartshell.execSpawn('echo', ['Test data'], {
    onData: (chunk) => {
      dataReceived += chunk.toString();
    }
  });
  
  expect(result.exitCode).toEqual(0);
  expect(dataReceived).toContain('Test data');
});

tap.test('execSpawn with signal should report signal in result', async () => {
  const testSmartshell = new smartshell.Smartshell({
    executor: 'bash',
    sourceFilePaths: [],
  });
  
  const streaming = await testSmartshell.execSpawnStreaming('sleep', ['10']);
  
  // Send SIGTERM after a short delay
  setTimeout(() => streaming.terminate(), 100);
  
  const result = await streaming.finalPromise;
  expect(result.exitCode).not.toEqual(0);
  expect(result.signal).toEqual('SIGTERM');
});

export default tap.start();