/**
 * The live acceptance suite: the Owliver UI-editing journey, in a real browser.
 *
 *   npm run test:browser
 *
 * Unit and SSR tests render these same modules and were not enough — every
 * defect this guards was found in a browser and missed by a green test run. So
 * this drives the real application: real routing, real React, real network,
 * real `preferences.uiLayouts`.
 *
 * **It never logs in.** The session is an HttpOnly cookie and this script has
 * no business handling anybody's credentials, so it attaches to a browser that
 * is *already* signed in and says so plainly when it cannot:
 *
 *   KROW_E2E_BROWSER_URL=http://127.0.0.1:9222     attach to a running Chrome
 *       (start one with: --remote-debugging-port=9222)
 *
 *   KROW_E2E_USER_DATA_DIR=/path/to/profile        launch Chrome on a profile
 *       that has been signed in once by hand
 *
 * With neither set, or with the browser not signed in, it exits **BLOCKED** —
 * never a silent pass. An acceptance suite that reports green because it never
 * ran is worse than no suite.
 *
 * The journey spans reloads, so the phases live in `browser-flows.js` and the
 * reloads live here.
 */
import { readFileSync } from 'node:fs';
import { join } from 'node:path';
import puppeteer from 'puppeteer-core';

const ROOT = process.cwd();
const BASE = process.env.KROW_E2E_BASE_URL || 'http://localhost:5173';
const FLOWS = readFileSync(join(ROOT, 'scripts/browser-flows.js'), 'utf8');
const CHROME = process.env.KROW_E2E_CHROME
  || '/Applications/Google Chrome.app/Contents/MacOS/Google Chrome';

/**
 * The pages under test, as data.
 *
 * `target` is a node the page really composes and `phrase` is how a person
 * names it — the pair this suite drives every page with. Adding a page is a row.
 */
const PAGES = [
  { page: 'activity', route: '/admin/activity', target: 'audit', phrase: 'the audit log' },
  { page: 'hired-history', route: '/admin/hired', target: 'chronology', phrase: 'the recent hiring timeline' },
  { page: 'analytics', route: '/admin/analytics', target: 'funnel', phrase: 'the hiring funnel' },
  {
    page: 'positions', route: '/admin/positions', target: 'skill-board-board', phrase: 'the Board card',
    /* The Board skill's own card: a *skill* node, so the same journey proves
       built-in and definition-contributed UI move through one engine. Needs the
       Board definition switched on, which `prepare` below does not do — the
       page is skipped rather than failed when its node is not there. */
    optional: true,
    data: ['What is on the board?', 'Show me the board activity'],
    ordinaryQuestion: 'How do I apply for this position?',
  },
];

const results = [];
const record = (name, pass, detail) => results.push({ name, pass, detail: detail || '' });

async function connect() {
  if (process.env.KROW_E2E_BROWSER_URL) {
    return puppeteer.connect({ browserURL: process.env.KROW_E2E_BROWSER_URL, defaultViewport: null });
  }
  if (process.env.KROW_E2E_USER_DATA_DIR) {
    return puppeteer.launch({
      executablePath: CHROME,
      userDataDir: process.env.KROW_E2E_USER_DATA_DIR,
      headless: false,
      defaultViewport: null,
    });
  }
  return null;
}

/** Load a route, install the flows, and wait for the page to have composed. */
async function open(page, route) {
  await page.goto(`${BASE}${route}`, { waitUntil: 'networkidle2', timeout: 45_000 });
  await page.evaluate(FLOWS);
  await page.waitForFunction(
    () => document.querySelector('textarea') && document.querySelectorAll('[data-ui-node]').length >= 0,
    { timeout: 30_000 }
  );
  await new Promise((r) => setTimeout(r, 2500));
}

const run = (page, fn, args) => page.evaluate(
  async (name, a) => window.__uiFlows[name](a), fn, args
);

async function main() {
  const browser = await connect();
  if (!browser) {
    console.error(
      'BLOCKED — no browser to attach to.\n'
      + '  This suite does not log in: the session is an HttpOnly cookie and this\n'
      + '  script does not handle credentials. Point it at a signed-in browser:\n\n'
      + '    KROW_E2E_BROWSER_URL=http://127.0.0.1:9222 npm run test:browser\n'
      + '      (start Chrome with --remote-debugging-port=9222)\n\n'
      + '    KROW_E2E_USER_DATA_DIR=/path/to/profile npm run test:browser\n'
    );
    process.exit(2);
  }

  const page = await browser.newPage();
  try {
    await open(page, PAGES[0].route);

    /* Signed in, or nothing below means anything. */
    const authed = await page.evaluate(async () => {
      const r = await fetch('/api/v1/me/preferences', { credentials: 'include' });
      return { status: r.status, composer: Boolean(document.querySelector('textarea')) };
    });
    if (authed.status !== 200 || !authed.composer) {
      console.error(
        `BLOCKED — that browser is not signed in (GET /me/preferences → ${authed.status}).\n`
        + '  Sign in once in that profile, then run this again.'
      );
      process.exit(2);
    }

    for (const spec of PAGES) {
      await open(page, spec.route);

      const present = await page.evaluate((t) => window.__uiFlows.nodes().includes(t), spec.target);
      if (!present) {
        if (spec.optional) {
          record(`${spec.page}: SKIPPED — ${spec.target} is not on the page`, true,
            'the definition contributing it is switched off');
          continue;
        }
        record(`${spec.page}: ${spec.target} is on the page`, false, 'not composed');
        continue;
      }

      results.push(...await run(page, 'nothingPreviewed', {
        page: spec.page, ordinaryQuestion: spec.ordinaryQuestion || null,
      }));
      if (spec.data) results.push(...await run(page, 'dataStaysData', { page: spec.page, questions: spec.data }));

      results.push(...await run(page, 'phase1', spec));
      await open(page, spec.route);
      results.push(...await run(page, 'phase2', spec));
      await open(page, spec.route);
      results.push(...await run(page, 'phase3', spec));
    }
  } finally {
    if (process.env.KROW_E2E_BROWSER_URL) browser.disconnect();
    else await browser.close();
  }

  const failed = results.filter((r) => !r.pass);
  for (const r of results) {
    console.log(`[ ${r.pass ? ' ok ' : 'FAIL'} ] ${r.name}${r.detail ? ` — ${r.detail}` : ''}`);
  }
  console.log(`\n${results.length - failed.length}/${results.length} browser checks passed`);
  if (failed.length) {
    console.log('\nFailed:');
    for (const r of failed) console.log(`  - ${r.name} (${r.detail})`);
    process.exit(1);
  }
}

main().catch((error) => { console.error('BROWSER SUITE ERROR:', error); process.exit(1); });