#!/usr/bin/env node

import { mkdir, writeFile } from 'node:fs/promises';
import path from 'node:path';
import { fileURLToPath } from 'node:url';

import { chromium } from 'playwright';

import { authenticateFrontdoor, createAuthenticatedContext } from './live-frontdoor-auth.mjs';

const __dirname = path.dirname(fileURLToPath(import.meta.url));
const webRoot = path.resolve(__dirname, '..');
const outputDir = path.join(webRoot, 'output', 'playwright');
const outputPath = path.join(outputDir, 'live-notifications-watchlist-recheck.json');
const authStatePath = path.join(outputDir, 'live-notifications-watchlist-recheck.state.json');
const authReportPath = path.join(outputDir, 'live-notifications-watchlist-recheck.auth.json');
const scopeQuery = 'tenant=demo-prod&regions=us-east&environments=stage&timeWindow=7d';

async function settle(page) {
  await page.waitForLoadState('domcontentloaded', { timeout: 15_000 }).catch(() => {});
  await page.waitForTimeout(1_500);
}

async function headingText(page) {
  const headings = page.locator('h1, h2, [data-testid="page-title"], .page-title');
  const count = await headings.count();
  for (let index = 0; index < Math.min(count, 4); index += 1) {
    const text = (await headings.nth(index).innerText().catch(() => '')).trim();
    if (text) {
      return text;
    }
  }

  return '';
}

async function captureSnapshot(page, label) {
  const alerts = await page
    .locator('[role="alert"], .mat-mdc-snack-bar-container, .toast, .notification, .error-banner')
    .evaluateAll((nodes) =>
      nodes
        .map((node) => (node.textContent || '').trim().replace(/\s+/g, ' '))
        .filter(Boolean)
        .slice(0, 5),
    )
    .catch(() => []);

  return {
    label,
    url: page.url(),
    title: await page.title(),
    heading: await headingText(page),
    alerts,
  };
}

async function navigate(page, route) {
  const separator = route.includes('?') ? '&' : '?';
  const url = `https://stella-ops.local${route}${separator}${scopeQuery}`;
  await page.goto(url, { waitUntil: 'domcontentloaded', timeout: 30_000 });
  await settle(page);
  return url;
}

async function clickLinkAndVerify(page, route, linkName, expectedPath) {
  await navigate(page, route);
  const locator = page.getByRole('link', { name: linkName }).first();
  if ((await locator.count()) === 0) {
    return {
      action: `link:${linkName}`,
      ok: false,
      reason: 'missing-link',
      snapshot: await captureSnapshot(page, `missing-link:${linkName}`),
    };
  }

  await locator.click({ timeout: 10_000 });
  await page.waitForURL((url) => url.pathname.includes(expectedPath), { timeout: 15_000 });
  await settle(page);

  return {
    action: `link:${linkName}`,
    ok: page.url().includes(expectedPath),
    snapshot: await captureSnapshot(page, `after-link:${linkName}`),
  };
}

async function main() {
  await mkdir(outputDir, { recursive: true });

  const authReport = await authenticateFrontdoor({
    statePath: authStatePath,
    reportPath: authReportPath,
    headless: true,
  });

  const browser = await chromium.launch({
    headless: true,
    args: ['--disable-dev-shm-usage'],
  });

  const context = await createAuthenticatedContext(browser, authReport, { statePath: authStatePath });
  const page = await context.newPage();
  const runtime = {
    consoleErrors: [],
    pageErrors: [],
    responseErrors: [],
    requestFailures: [],
  };

  page.on('console', (message) => {
    if (message.type() === 'error') {
      runtime.consoleErrors.push({ page: page.url(), text: message.text() });
    }
  });
  page.on('pageerror', (error) => {
    runtime.pageErrors.push({ page: page.url(), message: error.message });
  });
  page.on('requestfailed', (request) => {
    const url = request.url();
    if (/\.(?:css|js|map|png|jpg|jpeg|svg|woff2?)(?:$|\?)/i.test(url)) {
      return;
    }

    runtime.requestFailures.push({
      page: page.url(),
      method: request.method(),
      url,
      error: request.failure()?.errorText ?? 'unknown',
    });
  });
  page.on('response', (response) => {
    const url = response.url();
    if (/\.(?:css|js|map|png|jpg|jpeg|svg|woff2?)(?:$|\?)/i.test(url)) {
      return;
    }

    if (response.status() >= 400) {
      runtime.responseErrors.push({
        page: page.url(),
        method: response.request().method(),
        status: response.status(),
        url,
      });
    }
  });

  const results = [];
  results.push(await clickLinkAndVerify(
    page,
    '/ops/operations/notifications',
    'Open watchlist tuning',
    '/setup/trust-signing/watchlist/tuning',
  ));
  results.push(await clickLinkAndVerify(
    page,
    '/ops/operations/notifications',
    'Review watchlist alerts',
    '/setup/trust-signing/watchlist/alerts',
  ));

  const summary = {
    generatedAtUtc: new Date().toISOString(),
    results,
    runtime,
  };

  await writeFile(outputPath, `${JSON.stringify(summary, null, 2)}\n`, 'utf8');
  process.stdout.write(`${JSON.stringify(summary, null, 2)}\n`);

  await browser.close();
}

main().catch((error) => {
  process.stderr.write(`[live-notifications-watchlist-recheck] ${error instanceof Error ? error.message : String(error)}\n`);
  process.exitCode = 1;
});