GeeTest CAPTCHA v3
and CapMonster Cloud

// npm install playwright @zennolab_com/capmonstercloud-client
// npx playwright install chromium

import { chromium } from 'playwright';
import { CapMonsterCloudClientFactory, ClientOptions, GeeTestRequest } from '@zennolab_com/capmonstercloud-client';

const API_KEY = 'your_capmonster_cloud_api_key';
const DEMO_PAGE = 'https://example.com';

(async () => {
  const browser = await chromium.launch({ headless: false });
  const page = await browser.newPage();

  console.log('Opening the page...');
  await page.goto(DEMO_PAGE, { waitUntil: 'networkidle' });

  console.log('Getting captcha parameters...');
  const init = await page.evaluate(async () => {
    // Sending a request to the server to get init-params for GeeTest; replace with your value
    const r = await fetch(`/api/v1/example/gee-test/init-params?t=${Date.now()}`);  
    return r.json();
  });
  console.log('Init params:', init);

  console.log('Creating a task for CapMonster Cloud...');
  const cmc = CapMonsterCloudClientFactory.Create(new ClientOptions({ clientKey: API_KEY }));
  const solRaw = await cmc.Solve(new GeeTestRequest({ websiteURL: DEMO_PAGE, gt: init.gt, challenge: init.challenge }));
  const sol = solRaw.solution || solRaw;
  console.log('Captcha solution:', sol);

  console.log('Inserting the solution into the hidden fields...');
  await page.evaluate(s => {
    ['challenge','validate','seccode'].forEach(n => {
      const el = document.querySelector(`input[name="geetest_${n}"]`);
      if(el) el.value = s[n];
    });
  }, sol);

  await page.click('button[data-action="test_action"]'); // replace with your value
  console.log('Sending the verify request to the server...');
  const result = await page.evaluate(async () => {
    const payload = {
      geetest_challenge: document.querySelector('input[name="geetest_challenge"]')?.value,
      geetest_validate: document.querySelector('input[name="geetest_validate"]')?.value,
      geetest_seccode: document.querySelector('input[name="geetest_seccode"]')?.value
    };
    // replace with your value
    const r = await fetch('/api/v1/example/gee-test/verify', { 
      method:'POST', 
      headers:{'Content-Type':'application/json'}, 
      body: JSON.stringify(payload) 
    });
    return r.json();
  });

  console.log('Captcha verification result:', result);

  await page.waitForTimeout(3000);
  await browser.close();
})();