// @vitest-environment node

import { afterEach, describe, expect, it } from 'vitest';
import { realpathSync } from 'node:fs';
import { mkdir, mkdtemp, readFile, rm } from 'node:fs/promises';
import { createRequire } from 'node:module';
import { tmpdir } from 'node:os';
import { join, resolve } from 'node:path';
import { PiWorkerProcess } from '../../electron/coding-runtime/pi/worker-process';
import { PiManagedExtensionHost } from '../../electron/coding-runtime/pi/extension-host';

const scratchRoots: string[] = [];

afterEach(async () => {
  await Promise.all(scratchRoots.splice(0).map((root) => rm(root, {
    recursive: true,
    force: true,
    maxRetries: 3,
  })));
});

describe('locked Pi worker process smoke', () => {
  it('loads the real Pi 0.84.2 entry through Electron Node and exits by closing stdin', async () => {
    const requireFromProject = createRequire(resolve('package.json'));
    const electronExecutable = requireFromProject('electron') as string;
    const packageRoot = realpathSync(resolve(
      'node_modules',
      '@earendil-works',
      'pi-coding-agent',
    ));
    const packageJson = JSON.parse(await readFile(join(packageRoot, 'package.json'), 'utf8')) as {
      version: string;
    };
    expect(packageJson.version).toBe('0.84.2');

    const root = await mkdtemp(join(tmpdir(), 'makelore-pi-real-worker-'));
    scratchRoots.push(root);
    const configDir = join(root, 'config');
    const sessionDir = join(root, 'sessions');
    const cwd = join(root, 'project');
    await Promise.all([mkdir(configDir), mkdir(sessionDir), mkdir(cwd)]);

    const extensionHost = new PiManagedExtensionHost();
    const extension = await extensionHost.registerWorker({
      conversationId: 'real-conversation',
      generation: 1,
      projectId: 'real-project',
      extensionsDir: join(root, 'extensions'),
    });
    await extensionHost.bindRun('real-conversation', 1, 'real-run');
    const worker = await new PiWorkerProcess({
      executablePath: electronExecutable,
      cliPath: join(packageRoot, 'dist', 'cli.js'),
      cwd,
      configDir,
      sessionDir,
      additionalArgs: ['--extension', extension.extensionPath],
      env: extension.env,
      sensitiveValues: extension.sensitiveValues,
      commandTimeoutMs: 5_000,
    }).start();
    try {
      await expect(worker.request({ type: 'get_state' })).resolves.toMatchObject({
        type: 'response',
        command: 'get_state',
        success: true,
      });
      expect(worker.stderrDiagnostic).not.toContain('Failed to load extension');
      await expect(worker.stop()).resolves.toMatchObject({ mode: 'stdin-close', code: 0 });
    } finally {
      await worker.stop().catch(() => undefined);
      await extension.dispose();
      await extensionHost.close();
    }
  }, 15_000);
});