// ============================================================
// SESSION PERSISTENCE — full logout → login → still on the same
// tab + same sub-pill.
//
// The UI's login form is gated by a Cloudflare Turnstile token
// whose site key is hardcoded in index.html, which can't be
// completed in the e2e container (Turnstile rejects the non-prod
// origin). So the test does a programmatic logout (clear the
// ped_auth cookie, same effect server-side as clicking Logout)
// followed by a fresh programmatic login — this exercises the
// same localStorage persistence path a real logout/login would,
// without depending on the bot challenge.
// ============================================================

const { test, expect, E2E_BASE, loginAs } = require('../fixtures');

async function openDesktopTab(page, name) {
  const vp = page.viewportSize();
  if (vp && vp.width <= 768) {
    await page.click('#btn-menu-toggle').catch(() => {});
  }
  await page.click(`button.tab-btn[data-tab="${name}"]`);
  await page.waitForFunction((t) => {
    const el = document.getElementById(t + '-tab');
    return el && el.classList.contains('active') && el.innerHTML.trim().length > 100;
  }, name, { timeout: 15000 });
}

async function logoutClearsCookie(context) {
  // Remove the ped_auth cookie — identical server-side to hitting /logout.
  const cookies = await context.cookies();
  const keep = cookies.filter(c => c.name !== 'ped_auth');
  await context.clearCookies();
  if (keep.length) await context.addCookies(keep);
}

test.describe('Logout → login restores last tab + sub-pill', () => {

  test('tab choice + calc pill survive a full logout/login cycle', async ({ context, request, page }) => {
    await loginAs(context, request);
    await page.goto(E2E_BASE + '/');
    await page.waitForSelector('button.tab-btn', { timeout: 15000 });
    await openDesktopTab(page, 'calculators');
    await page.click('button.calc-nav-pill[data-calc="bili"]');
    await expect(page.locator('button.calc-nav-pill[data-calc="bili"].active')).toBeVisible();

    // Simulate logout (clear session cookie)
    await logoutClearsCookie(context);
    // Visiting the app with no cookie lands on the auth screen
    await page.goto(E2E_BASE + '/');
    await expect(page.locator('#auth-screen')).toBeVisible({ timeout: 10000 });

    // Log back in (fresh cookie) and revisit the app
    await loginAs(context, request);
    await page.goto(E2E_BASE + '/');
    await page.waitForSelector('button.tab-btn', { timeout: 15000 });

    // Restore must put us back on Calculators / Bilirubin pill
    await expect(page.locator('#calculators-tab.active')).toHaveCount(1, { timeout: 10000 });
    await expect(page.locator('button.calc-nav-pill[data-calc="bili"].active')).toBeVisible({ timeout: 10000 });
    await expect(page.locator('#calc-bili')).not.toHaveClass(/hidden/);
  });

  test('bedside sub-pill survives logout/login', async ({ context, request, page }) => {
    await loginAs(context, request);
    await page.goto(E2E_BASE + '/');
    await page.waitForSelector('button.tab-btn', { timeout: 15000 });
    await openDesktopTab(page, 'bedside');
    await page.click('button.calc-pill[data-em="sepsis"]');
    await expect(page.locator('button.calc-pill[data-em="sepsis"].active')).toBeVisible();

    await logoutClearsCookie(context);
    await page.goto(E2E_BASE + '/');
    await expect(page.locator('#auth-screen')).toBeVisible({ timeout: 10000 });

    await loginAs(context, request);
    await page.goto(E2E_BASE + '/');
    await page.waitForSelector('button.tab-btn', { timeout: 15000 });

    await expect(page.locator('#bedside-tab.active')).toHaveCount(1, { timeout: 10000 });
    await expect(page.locator('button.calc-pill[data-em="sepsis"].active')).toBeVisible({ timeout: 10000 });
    await expect.poll(async () =>
      await page.locator('#em-sepsis').evaluate(el => el.style.display),
    { timeout: 5000 }).not.toBe('none');
  });
});