login.js

import { chromium } from 'playwright';

export async function runLogin () {
  let browser;
  try {
    browser = await chromium.launch({
      args: ['--no-sandbox', '--ignore-certificate-errors'],
    });
    const ctx  = await browser.newContext({ ignoreHTTPSErrors: true });
    const page = await ctx.newPage();
    await page.goto(process.env.N8N_URL, { waitUntil: 'networkidle', timeout: 60000 });

    /* sign-in if form present */
    const signIn = page.locator('[data-test-id="signin-form"]');
    if (await signIn.count()) {
      await page
        .locator('input[name="emailOrLdapLoginId"], input[name="email"]')
        .first().fill(process.env.N8N_EMAIL || '');
      await page.locator('input[name="password"]').first()
        .fill(process.env.N8N_PASSWORD || '');
      await page.getByRole('button', { name: /sign in/i }).click();
      await page.locator('text=Overview').waitFor({ timeout: 60000 });
    }

    /* take screenshot → Buffer */
    const png = await page.screenshot({ type: 'png', fullPage: true });
    
    console.log('✅ Playwright finished; needSignIn =', needSignIn);
    return { ok: true, png };          // return raw Buffer
  } catch (err) {
    return { ok: false, error: err.message };
  } finally {
    if (browser) await browser.close();
  }
}