// CI-only connectivity diagnostics (globalSetup runs after the e2e stack is ready).
// Evidence for the Chromium ERR_SSL_PROTOCOL_ERROR hunt: compares node-side resolution/HTTP
// against Chromium's own navigation, hostname vs static IP. Never fails the run.
import { promises as dnsPromises } from 'node:dns';
import { chromium } from '@playwright/test';

export default async function ciDiagnostics() {
  if (process.env.PW_REMOTE_BROWSER !== '0') return; // local runs: no-op
  const base = process.env.E2E_BASE_URL ?? '';
  try {
    console.log('[diag] node resolve4(app):', JSON.stringify(await dnsPromises.resolve4('app').catch((e) => `failed: ${e.code}`)));
    try {
      const r = await fetch(`${base}/api/version`);
      console.log('[diag] node fetch', base, '->', r.status, JSON.stringify(await r.json().catch(() => null)));
    } catch (e) {
      console.log('[diag] node fetch failed:', String(e));
    }
    const browser = await chromium.launch();
    try {
      for (const url of ['http://app:3000/', base]) {
        const page = await (await browser.newContext()).newPage();
        try {
          await page.goto(url, { timeout: 15_000 });
          console.log('[diag] chromium goto', url, '-> OK, title:', await page.title().catch(() => '?'));
        } catch (e) {
          console.log('[diag] chromium goto', url, '-> FAILED:', String(e).split('\n')[0]);
        }
        await page.context().close();
      }
    } finally {
      await browser.close();
    }
  } catch (e) {
    console.log('[diag] diagnostics error (non-fatal):', String(e));
  }
}