const { test, expect } = require('@playwright/test');
const {
  ensureLocalAuthenticatedRacePage,
  EXPECTED_MATCH_COUNT,
  FACEAI_BASE_URL,
  LEGACY_BASE_URL,
  LEGACY_RACE_ID,
  SELFIE_NAME,
  buildHandoffUrl,
  buildSimulatorUrl,
  getSearchArtifacts,
  getSelfiePath,
  readAuditArtifacts,
  readUtf8
} = require('./faceai-test-utils');

const FACEAI_HOME_URL_RE = /http:\/\/(localhost|127\.0\.0\.1):3001\/?(?:\?.*)?$/;
const FACEAI_CALLBACK_URL_RE = /http:\/\/(localhost|127\.0\.0\.1):3001\/auth\/callback\?token=/;
const LONG_TEST_TIMEOUT_MS = 3 * 60 * 1000;
const SHORT_UI_TIMEOUT_MS = 30 * 1000;
const SEARCH_COMPLETION_TIMEOUT_MS = 75 * 1000;
const LEGACY_RETURN_TIMEOUT_MS = 75 * 1000;
const FILE_CHOOSER_TIMEOUT_MS = 8 * 1000;
const FACEAI_CONSENT_HEADING_RE = /Prima di continuare|Before you continue/i;
const FACEAI_UPLOAD_HEADING_RE = /Carica il tuo selfie|Upload your selfie/i;
const LEGACY_BASE_URL_RE = new RegExp(`^${escapeRegExp(LEGACY_BASE_URL)}`);
const LEGACY_HOME_URL_RE = new RegExp(`^${escapeRegExp(`${LEGACY_BASE_URL}/index.jsp`)}$`);

function escapeRegExp(value) {
  return String(value).replace(/[.*+?^${}()|[\]\\]/g, '\\$&');
}

function buildLegacySimulatorReturnMatcher(raceId) {
  return new RegExp(`^${escapeRegExp(`${LEGACY_BASE_URL}/Foto2.abl?id_gara=${raceId}`)}.*`);
}

function assertLogDoesNotContain(content, patterns, label) {
  for (const pattern of patterns) {
    expect(content, `${label} should not contain ${pattern}`).not.toMatch(pattern);
  }
}

async function waitForFaceAiHome(page) {
  await page.waitForURL((url) => FACEAI_HOME_URL_RE.test(url.toString()), {
    timeout: SHORT_UI_TIMEOUT_MS
  });

  const consentHeading = page.getByRole('heading', { name: FACEAI_CONSENT_HEADING_RE });
  if (await consentHeading.isVisible().catch(() => false)) {
    await page.getByRole('checkbox', {
      name: /Confermo di aver letto l’informativa sul trattamento dei dati biometrici\.|I confirm that I have read the biometric data processing notice\./i
    }).check();
    await page.getByRole('button', { name: /Accetto e continuo|I agree and continue/i }).click();
  }

  await expect(page.getByRole('heading', { name: FACEAI_UPLOAD_HEADING_RE })).toBeVisible();
  await expect(page.getByRole('button', { name: /Scegli immagine|Choose image/i })).toBeVisible();
}

async function launchFromSimulator(page, options = {}) {
  const simulatorUrl = buildSimulatorUrl(options);
  await page.goto(simulatorUrl, { waitUntil: 'domcontentloaded' });
  await expect(page.locator('#faceaiLaunchButton')).toBeVisible();
  await expect(page.locator('select#tipoPuntoFoto')).toHaveCount(0);
  await page.locator('#faceaiLaunchButton').click();
  await waitForFaceAiHome(page);
  return simulatorUrl;
}

async function enterViaHandoff(page, options = {}) {
  await page.goto(buildHandoffUrl(options), { waitUntil: 'domcontentloaded' });
  await waitForFaceAiHome(page);
}

async function readLaunchUrlFromLegacyPage(page) {
  const launchUrl = await page.evaluate(() => {
    return typeof buildFaceAiLaunchUrl === 'function' ? buildFaceAiLaunchUrl() : '';
  });

  expect(launchUrl, 'Expected the legacy race page to expose a FaceAI handoff URL builder.').toBeTruthy();
  return new URL(launchUrl, LEGACY_BASE_URL);
}

async function startSearch(page, selfieName) {
  const createResponsePromise = page.waitForResponse((response) => {
    return response.url().includes('/api/searches')
      && response.request().method() === 'POST'
      && response.status() === 201;
  });

  await page.locator('input[type="file"]').setInputFiles(getSelfiePath(selfieName));

  const createResponse = await createResponsePromise;
  return createResponse.json();
}

async function fetchSearchStatus(page, searchId) {
  return page.evaluate(async ({ searchId }) => {
    const response = await fetch(`/api/searches/${searchId}`, { credentials: 'include' });
    const body = await response.json().catch(() => null);
    return {
      statusCode: response.status,
      body
    };
  }, { searchId });
}

async function waitForSearchCondition(page, searchId, predicate, timeoutMs = 30 * 1000) {
  const deadline = Date.now() + timeoutMs;
  let lastPayload = null;

  while (Date.now() < deadline) {
    const payload = await fetchSearchStatus(page, searchId);
    lastPayload = payload;
    if (payload.statusCode === 200 && predicate(payload.body)) {
      return payload.body;
    }

    await page.waitForTimeout(250);
  }

  throw new Error(`Timed out waiting for search ${searchId}. Last payload: ${JSON.stringify(lastPayload)}`);
}

async function waitForLegacyResult(page, raceId, expectedMatchCount = null) {
  await page.waitForURL(buildLegacySimulatorReturnMatcher(raceId), {
    timeout: LEGACY_RETURN_TIMEOUT_MS,
    waitUntil: 'commit'
  });

  await expect.poll(() => page.url(), {
    timeout: 15 * 1000,
    message: 'Expected the legacy race return URL to include FaceAI direct-return parameters.'
  }).toMatch(/faceaiResultId=|faceaiMatchStorageKey=|faceaiPhotoIds=/);

  if (expectedMatchCount === null) {
    return;
  }

  await expect(page.locator('#faceAiPhotoCountValue')).toHaveText(String(expectedMatchCount), {
    timeout: SHORT_UI_TIMEOUT_MS
  });
}

async function verifySearchLogs(searchId, { expectedMatchCount, expectedSelfieName }) {
  const artifacts = getSearchArtifacts(searchId);
  const [backendLog, processorLog, workerLog, matcherLog] = await Promise.all([
    readUtf8(artifacts.backendLogPath),
    readUtf8(artifacts.processorLogPath),
    readUtf8(artifacts.workerLogPath),
    readUtf8(artifacts.matcherLogPath)
  ]);

  expect(workerLog).toContain('Completed FaceAI search');
  if (expectedMatchCount !== undefined) {
    expect(workerLog).toContain(`"matchCount":${expectedMatchCount}`);
  }
  if (expectedSelfieName) {
    expect(matcherLog).toContain(expectedSelfieName);
  }

  assertLogDoesNotContain(backendLog, [/\bnpm error\b/i, /\berror:\b/i, /\bfailed\b/i], 'backend.log');
  assertLogDoesNotContain(processorLog, [new RegExp(`Failed FaceAI search ${searchId}`, 'i'), /\bnpm error\b/i], 'processor.log');
  assertLogDoesNotContain(workerLog, [/FaceAI search failed/i], 'worker.log');
  assertLogDoesNotContain(matcherLog, [/\[ERROR\]/i, /Traceback/i], 'matcher.log');

  return { backendLog, processorLog, workerLog, matcherLog };
}

async function verifyAuditLog(searchId, { expectedMatchCount, expectedRaceId, expectedSelfieName, expectedUserId }) {
  const artifacts = getSearchArtifacts(searchId);
  const audit = readAuditArtifacts(searchId);

  expect(audit.searchRow, `Expected ${artifacts.auditDbPath} to contain an audit row for ${searchId}`).toBeTruthy();
  expect(audit.searchRow.search_id).toBe(searchId);
  expect(audit.searchRow.status).toBe('completed');
  expect(audit.searchRow.match_count).toBe(expectedMatchCount);
  expect(audit.searchRow.race_id).toBe(expectedRaceId);
  expect(audit.searchRow.user_id).toBe(expectedUserId);
  expect(audit.searchRow.selfie_name).toBe(expectedSelfieName);
  expect(audit.searchRow.selfie_sha256).toMatch(/^[a-f0-9]{64}$/i);
  expect(audit.searchRow.selfie_size_bytes).toBeGreaterThan(0);
  expect(audit.searchRow.result_id).toBeTruthy();
  expect(audit.searchRow.requested_at).toBeGreaterThan(0);
  expect(audit.searchRow.completed_at).toBeGreaterThan(0);
  expect(audit.searchRow.redirect_issued_at).toBeGreaterThan(0);
  expect(audit.searchRow.matches).toHaveLength(expectedMatchCount);

  const eventTypes = audit.events.map((event) => event.event_type);
  expect(eventTypes).toContain('search_requested');
  expect(eventTypes).toContain('search_completed');
  expect(eventTypes).toContain('search_redirect_issued');

  const requestedEvent = audit.events.find((event) => event.event_type === 'search_requested');
  expect(requestedEvent?.selfie_sha256).toBe(audit.searchRow.selfie_sha256);

  const fingerprintMatch = audit.fingerprintMatches.find((entry) => entry.search_id === searchId);
  expect(fingerprintMatch, 'Expected fingerprint lookup to find the original search row').toBeTruthy();
  expect(fingerprintMatch.match_count).toBe(expectedMatchCount);
  expect(fingerprintMatch.result_id).toBe(audit.searchRow.result_id);
  expect(fingerprintMatch.status).toBe('completed');

  return audit;
}

async function verifyNoResultsAuditLog(searchId, { expectedRaceId, expectedSelfieName, expectedUserId }) {
  const artifacts = getSearchArtifacts(searchId);
  const audit = readAuditArtifacts(searchId);

  expect(audit.searchRow, `Expected ${artifacts.auditDbPath} to contain an audit row for ${searchId}`).toBeTruthy();
  expect(audit.searchRow.search_id).toBe(searchId);
  expect(audit.searchRow.status).toBe('completed');
  expect(audit.searchRow.completion_code).toBe('NO_FACES_FOUND');
  expect(audit.searchRow.match_count).toBe(0);
  expect(audit.searchRow.race_id).toBe(expectedRaceId);
  expect(audit.searchRow.user_id).toBe(expectedUserId);
  expect(audit.searchRow.selfie_name).toBe(expectedSelfieName);
  expect(audit.searchRow.selfie_sha256).toMatch(/^[a-f0-9]{64}$/i);
  expect(audit.searchRow.selfie_size_bytes).toBeGreaterThan(0);
  expect(audit.searchRow.result_id).toBeTruthy();
  expect(audit.searchRow.requested_at).toBeGreaterThan(0);
  expect(audit.searchRow.completed_at).toBeGreaterThan(0);
  expect(audit.searchRow.redirect_issued_at).toBeNull();
  expect(audit.searchRow.matches).toHaveLength(0);

  const eventTypes = audit.events.map((event) => event.event_type);
  expect(eventTypes).toContain('search_requested');
  expect(eventTypes).toContain('search_completed');
  expect(eventTypes).not.toContain('search_redirect_issued');

  const requestedEvent = audit.events.find((event) => event.event_type === 'search_requested');
  expect(requestedEvent?.selfie_sha256).toBe(audit.searchRow.selfie_sha256);

  const fingerprintMatch = audit.fingerprintMatches.find((entry) => entry.search_id === searchId);
  expect(fingerprintMatch, 'Expected fingerprint lookup to find the original search row').toBeTruthy();
  expect(fingerprintMatch.match_count).toBe(0);
  expect(fingerprintMatch.result_id).toBe(audit.searchRow.result_id);
  expect(fingerprintMatch.status).toBe('completed');

  return audit;
}

async function closeContexts(contexts) {
  await Promise.all(contexts.map(async (context) => {
    try {
      await context.close();
    } catch (error) {
      if (!/ENOENT|Target page, context or browser has been closed/i.test(String(error))) {
        throw error;
      }
    }
  }));
}

test('runs the legacy Tomcat flow through FaceAI and returns to the filtered legacy result', async ({ page }) => {
  test.slow();

  await launchFromSimulator(page, {
    raceId: LEGACY_RACE_ID,
    raceSlug: 'isolotto',
    raceName: 'Festa sociale UP Isolotto',
    raceFolder: 'ISOLOTTO'
  });

  const search = await startSearch(page, SELFIE_NAME);

  await waitForLegacyResult(page, LEGACY_RACE_ID, EXPECTED_MATCH_COUNT);

  await verifySearchLogs(search.id, {
    expectedMatchCount: EXPECTED_MATCH_COUNT,
    expectedSelfieName: SELFIE_NAME.split(/[\\/]+/u).pop()
  });

  await verifyAuditLog(search.id, {
    expectedMatchCount: EXPECTED_MATCH_COUNT,
    expectedRaceId: LEGACY_RACE_ID,
    expectedSelfieName: SELFIE_NAME.split(/[\\/]+/u).pop(),
    expectedUserId: 'legacy-user-1'
  });
});

test('records structured logs for a completed no-results FaceAI search in the dev compose stack', async ({ page }) => {
  test.slow();

  await launchFromSimulator(page, {
    raceId: LEGACY_RACE_ID,
    raceSlug: 'isolotto',
    raceName: 'Festa sociale UP Isolotto',
    raceFolder: 'ISOLOTTO'
  });

  const search = await startSearch(page, SELFIE_NAME);

  await waitForSearchCondition(page, search.id, (payload) => {
    return payload.status === 'completed' && payload.completionCode === 'NO_FACES_FOUND';
  }, SEARCH_COMPLETION_TIMEOUT_MS);

  await verifySearchLogs(search.id, {
    expectedMatchCount: 0,
    expectedSelfieName: SELFIE_NAME.split(/[\\/]+/u).pop()
  });

  await verifyNoResultsAuditLog(search.id, {
    expectedRaceId: LEGACY_RACE_ID,
    expectedSelfieName: SELFIE_NAME.split(/[\\/]+/u).pop(),
    expectedUserId: 'legacy-user-1'
  });
});

test('builds the legacy FaceAI handoff URL with the exact local race storage metadata', async ({ page }) => {
  await page.goto(buildSimulatorUrl({
    raceId: LEGACY_RACE_ID,
    raceSlug: 'isolotto',
    raceName: 'Festa sociale UP Isolotto',
    raceYear: '2026',
    raceMonthFolder: '04.APRILE',
    raceFolder: 'ISOLOTTO'
  }), { waitUntil: 'domcontentloaded' });

  await expect(page.locator('#faceAiRaceYear')).toHaveValue('2026');
  await expect(page.locator('#faceAiRaceMonthFolder')).toHaveValue('04.APRILE');
  await expect(page.locator('#faceAiRaceFolder')).toHaveValue('ISOLOTTO');

  const launchUrl = await readLaunchUrlFromLegacyPage(page);
  expect(launchUrl.searchParams.get('raceYear')).toBe('2026');
  expect(launchUrl.searchParams.get('raceMonthFolder')).toBe('04.APRILE');
  expect(launchUrl.searchParams.get('raceFolder')).toBe('ISOLOTTO');
  expect(launchUrl.searchParams.get('raceStorageRelativeDir')).toBe('2026/04.APRILE/ISOLOTTO');
});

test('shows the unsupported-race message when the current race has no PKL data and lets the user go back', async ({ page }) => {
  const consoleErrors = [];
  page.on('console', (message) => {
    if (message.type() === 'error') {
      consoleErrors.push(message.text());
    }
  });

  await launchFromSimulator(page, {
    raceId: '404',
    raceSlug: 'corsa-di-livorno',
    raceName: 'Corsa di Livorno',
    raceFolder: 'LIVORNO'
  });

  await expect(page.locator('.faceai-feedback')).toContainText('FaceAI non è disponibile per questa gara.');
  await expect(page.locator('input[type="file"]')).toBeDisabled();
  await expect(page.getByRole('button', { name: 'Scegli immagine' })).toBeDisabled();
  await expect.poll(() => {
    return consoleErrors.find((entry) => entry.includes('[FaceAI] Invalid race data:')) || null;
  }).toBeNull();

  await page.waitForTimeout(2000);
  await expect(page).toHaveURL(FACEAI_HOME_URL_RE);

  await page.getByRole('button', { name: 'Torna alla pagina gara' }).click();
  await expect(page).toHaveURL(buildLegacySimulatorReturnMatcher('404'));
});

test('shows a localized invalid-race error when the handoff omits race storage metadata', async ({ page }) => {
  const consoleErrors = [];
  page.on('console', (message) => {
    if (message.type() === 'error') {
      consoleErrors.push(message.text());
    }
  });

  const handoffUrl = new URL(buildHandoffUrl({
    raceId: '405',
    lang: 'en',
    raceSlug: 'ghost-race',
    raceName: 'Ghost Race',
    raceFolder: 'THIS RACE DOES NOT EXIST'
  }));
  handoffUrl.searchParams.delete('raceYear');
  handoffUrl.searchParams.delete('raceMonthFolder');
  handoffUrl.searchParams.delete('raceFolder');

  await page.goto(handoffUrl.toString(), { waitUntil: 'domcontentloaded' });

  await page.waitForURL(FACEAI_HOME_URL_RE, {
    timeout: SHORT_UI_TIMEOUT_MS
  });
  await expect(page.getByRole('heading', { name: 'Find your photos with a selfie' })).toBeVisible();
  await expect(page.locator('.faceai-feedback')).toContainText('The race data received for this session is invalid. Go back to the race page and reopen Face ID from the correct race.');
  await expect(page.locator('input[type="file"]')).toBeDisabled();
  await expect(page.getByRole('button', { name: 'Choose image' })).toBeDisabled();
  await expect(page.getByRole('button', { name: 'Start Face ID search' })).toHaveCount(0);
  await expect(page.getByRole('button', { name: 'Back to the race page' })).toBeVisible();
  await expect.poll(() => {
    return consoleErrors.find((entry) => entry.includes('[FaceAI] Invalid race data:')) || null;
  }).toContain('MISSING_RACE_STORAGE');
  await expect.poll(() => {
    return consoleErrors.find((entry) => entry.includes('[FaceAI] Invalid race data:')) || null;
  }).toContain('MISSING_RACE_STORAGE');

  await page.getByRole('button', { name: 'Back to the race page' }).click();
  await expect(page).toHaveURL(buildLegacySimulatorReturnMatcher('405'));
});

test('rejects a not-logged-in user after clicking the Face ID button and sends them back to the original race page', async ({ page }) => {
  const simulatorUrl = buildSimulatorUrl({
    raceId: '202',
    raceSlug: 'mezza-di-pisa',
    raceName: 'Mezza di Pisa',
    raceFolder: 'PISA'
  });

  await page.goto(simulatorUrl, { waitUntil: 'domcontentloaded' });
  await expect(page.locator('#faceaiLaunchButton')).toBeVisible();

  await page.evaluate(() => {
    if (window.faceAiSimulator) {
      delete window.faceAiSimulator.devUserId;
      delete window.faceAiSimulator.devDisplayName;
      delete window.faceAiSimulator.devEmail;
      delete window.faceAiSimulator.devMembershipStatus;
    }
  });

  await page.locator('#faceaiLaunchButton').click();

  await expect(page).toHaveURL(buildLegacySimulatorReturnMatcher('202'));
  await expect(page).not.toHaveURL(FACEAI_HOME_URL_RE);
  await expect(page.locator('#faceAiErrorModal')).toBeVisible();
  await expect(page.locator('#faceAiErrorModalLabel')).toContainText('Face ID non disponibile');
  await expect(page.locator('#faceAiErrorModalMessage')).toContainText('Il servizio Face ID non e al momento disponibile. Riprova piu tardi.');
});

test('authenticates with the seeded local user and lets that user browse and launch the Livorno race page', async ({ page }) => {
  await ensureLocalAuthenticatedRacePage(page, {
    raceId: '1018557',
    raceName: 'VIVICITTA LIVORNO',
    raceYear: '2026',
    raceMonthFolder: '04.APRILE',
    raceFolder: 'LIVORNO'
  });

  await page.locator('#faceaiLaunchButton').click();
  await waitForFaceAiHome(page);
});

test('shows the no-face message and allows the user to return to the race page', async ({ page }) => {
  test.slow();

  await launchFromSimulator(page, {
    raceId: '202',
    raceSlug: 'mezza-di-pisa',
    raceName: 'Mezza di Pisa',
    raceFolder: 'PISA'
  });

  const search = await startSearch(page, 'DSC_1994.JPG');

  await waitForSearchCondition(page, search.id, (payload) => {
    return payload.status === 'completed' && payload.completionCode === 'NO_FACES_FOUND';
  }, SEARCH_COMPLETION_TIMEOUT_MS);

  await expect(page.locator('.faceai-feedback')).toContainText('Nessun volto rilevato nella foto caricata');
  await page.waitForTimeout(2000);
  await expect(page).toHaveURL(FACEAI_HOME_URL_RE);

  await verifySearchLogs(search.id, {
    expectedMatchCount: 0,
    expectedSelfieName: 'DSC_1994.JPG'
  });

  await page.getByRole('button', { name: 'Torna alla pagina gara' }).click();
  await expect(page).toHaveURL(buildLegacySimulatorReturnMatcher('202'));
});

test('opens the file chooser when the user clicks the upload button', async ({ page }) => {
  await launchFromSimulator(page, {
    raceId: '202',
    raceSlug: 'mezza-di-pisa',
    raceName: 'Mezza di Pisa',
    raceFolder: 'PISA'
  });

  const fileChooserPromise = page.waitForEvent('filechooser', { timeout: FILE_CHOOSER_TIMEOUT_MS });
  await page.getByRole('button', { name: 'Scegli immagine' }).click();
  const fileChooser = await fileChooserPromise;

  await fileChooser.setFiles(getSelfiePath(SELFIE_NAME));
  await expect(page.getByText(SELFIE_NAME.split(/[\\/]+/u).pop())).toBeVisible();
  await expect(page.getByRole('button', { name: 'Avvia ricerca Face ID' })).toBeEnabled();
});

test('lets the user retry with a valid photo after a no-face upload and then returns to the filtered legacy result', async ({ page }) => {
  test.slow();

  await launchFromSimulator(page, {
    raceId: '202',
    raceSlug: 'mezza-di-pisa',
    raceName: 'Mezza di Pisa',
    raceFolder: 'PISA'
  });

  const noFaceSearch = await startSearch(page, 'DSC_1994.JPG');
  await waitForSearchCondition(page, noFaceSearch.id, (payload) => {
    return payload.status === 'completed' && payload.completionCode === 'NO_FACES_FOUND';
  }, SEARCH_COMPLETION_TIMEOUT_MS);

  await expect(page.locator('.faceai-feedback')).toContainText('Nessun volto rilevato nella foto caricata');
  await expect(page.locator('input[type="file"]')).toBeEnabled();

  const retrySearch = await startSearch(page, SELFIE_NAME);
  await waitForLegacyResult(page, '202', EXPECTED_MATCH_COUNT);

  await verifySearchLogs(noFaceSearch.id, {
    expectedMatchCount: 0,
    expectedSelfieName: 'DSC_1994.JPG'
  });
  await verifySearchLogs(retrySearch.id, {
    expectedMatchCount: EXPECTED_MATCH_COUNT,
    expectedSelfieName: SELFIE_NAME.split(/[\\/]+/u).pop()
  });
});

test('redirects direct-entry users without FaceAI session data back to the legacy site', async ({ browser }) => {
  const context = await browser.newContext();
  const page = await context.newPage();

  try {
    await page.goto(`${FACEAI_BASE_URL}/`, { waitUntil: 'domcontentloaded' });
    await page.waitForURL(LEGACY_HOME_URL_RE, { timeout: SHORT_UI_TIMEOUT_MS });
  } finally {
    await context.close();
  }
});

test('allows two users to process different photos at the same time', async ({ browser }) => {
  test.slow();
  test.setTimeout(LONG_TEST_TIMEOUT_MS);

  const contexts = [await browser.newContext(), await browser.newContext()];
  const pages = await Promise.all(contexts.map((context) => context.newPage()));

  try {
    await Promise.all([
      enterViaHandoff(pages[0], { userId: 'concurrency-user-1' }),
      enterViaHandoff(pages[1], { userId: 'concurrency-user-2' })
    ]);

    const [searchOne, searchTwo] = await Promise.all([
      startSearch(pages[0], SELFIE_NAME),
      startSearch(pages[1], 'DSC_1987.JPG')
    ]);

    await Promise.all([
      waitForLegacyResult(pages[0], '202'),
      waitForLegacyResult(pages[1], '202')
    ]);

    await Promise.all([
      verifySearchLogs(searchOne.id, { expectedSelfieName: SELFIE_NAME.split(/[\\/]+/u).pop() }),
      verifySearchLogs(searchTwo.id, { expectedSelfieName: 'DSC_1987.JPG' })
    ]);
  } finally {
    await closeContexts(contexts);
  }
});

test('queues the third user until a worker is free and then completes all three searches normally', async ({ browser }) => {
  test.slow();
  test.setTimeout(LONG_TEST_TIMEOUT_MS);

  const contexts = [await browser.newContext(), await browser.newContext(), await browser.newContext()];
  const pages = await Promise.all(contexts.map((context) => context.newPage()));

  try {
    await Promise.all([
      enterViaHandoff(pages[0], { userId: 'queue-user-1' }),
      enterViaHandoff(pages[1], { userId: 'queue-user-2' }),
      enterViaHandoff(pages[2], { userId: 'queue-user-3' })
    ]);

    const [searchOne, searchTwo, searchThree] = await Promise.all([
      startSearch(pages[0], SELFIE_NAME),
      startSearch(pages[1], 'DSC_1987.JPG'),
      startSearch(pages[2], 'DSC_2058.JPG')
    ]);

    const searchSessions = [
      { page: pages[0], searchId: searchOne.id },
      { page: pages[1], searchId: searchTwo.id },
      { page: pages[2], searchId: searchThree.id }
    ];

    let queuedSearch = null;
    const deadline = Date.now() + 30 * 1000;
    while (Date.now() < deadline && !queuedSearch) {
      const statuses = await Promise.all(searchSessions.map(async (session) => {
        const payload = await fetchSearchStatus(session.page, session.searchId);
        return {
          ...session,
          search: payload.body
        };
      }));

      const processingCount = statuses.filter((item) => item.search?.status === 'processing').length;
      queuedSearch = processingCount >= 2
        ? statuses.find((item) => item.search?.status === 'queued') || null
        : null;

      if (!queuedSearch) {
        await pages[0].waitForTimeout(250);
      }
    }

    expect(queuedSearch, 'one search should remain queued while two worker slots are busy').toBeTruthy();

    await waitForSearchCondition(queuedSearch.page, queuedSearch.searchId, (payload) => {
      return payload.status === 'processing' || payload.status === 'completed';
    }, SEARCH_COMPLETION_TIMEOUT_MS);

    await Promise.all(pages.map((page) => waitForLegacyResult(page, '202')));

    await Promise.all([
      verifySearchLogs(searchOne.id, { expectedSelfieName: SELFIE_NAME.split(/[\\/]+/u).pop() }),
      verifySearchLogs(searchTwo.id, { expectedSelfieName: 'DSC_1987.JPG' }),
      verifySearchLogs(searchThree.id, { expectedSelfieName: 'DSC_2058.JPG' })
    ]);
  } finally {
    await closeContexts(contexts);
  }
});