/**
 * Traffic analytics capture — for the June 2026 platform-updates blog post.
 *
 * Captures, as the demo customer:
 *   - traffic-analytics-overview.png   View Traffic landing: Yesterday's Snapshot,
 *                                      Top URLs / Bandwidth Consumers, Daily Totals
 *   - traffic-analytics-day-detail.png the per-day drill-down: hourly request graph,
 *                                      top pages by views, top pages by bandwidth
 *
 * Viewport 1440x900, deviceScaleFactor 2, fullPage:false. Redacts the fleet
 * server strip ("WHP-01" / "Welcome, ...") and the version-number footer; keeps
 * the brand demo domain (whp-demo.anhh.co) visible on purpose. Read-only.
 *
 * Output goes to /workspace/blog-assets (this is a blog image, not a KB page).
 */
import { chromium, type Page } from 'playwright';
import { mkdir } from 'node:fs/promises';
import { resolve } from 'node:path';

const OUT_DIR = '/workspace/blog-assets';

function need(name: string): string {
  const v = process.env[name];
  if (!v) throw new Error(`missing env: ${name}`);
  return v;
}

const BASE = need('WHP_BASE');
const USER = need('WHP_USER');
const PASS = need('WHP_PASS');

// Hide the server-identifying navbar strip and the version footer.
const HIDE_CSS = `.navbar-text, .brand-full, .navbar-brand { visibility: hidden !important; }`;

async function login(page: Page) {
  await page.goto(`${BASE}/login.php`, { waitUntil: 'domcontentloaded' });
  await page.fill('input[name="user"]', USER);
  await page.fill('input[name="password"]', PASS);
  await page.click('button[type="submit"]');
  await page.waitForLoadState('networkidle');
}

async function redact(page: Page) {
  await page.addStyleTag({ content: HIDE_CSS });
  await page.evaluate(() => {
    const swaps: [RegExp, string][] = [
      [/whp\d+(-[a-z0-9]+)?\.cloud-hosting\.io/gi, '<your-server>.cloud-hosting.io'],
      [/WHP\d+(-[A-Z0-9]+)?\b/g, '<YOUR-SERVER>'],
      [/whp\d+(-[a-z0-9]+)?\b/gi, '<your-server>'],
      [/\b\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}\b/g, '<server-IP>'],
      [/demo-user/g, 'your-username'],
      // Strip the release/version identifier from the footer.
      [/Web Hosting Panel\s*-\s*\d{4}\.\d{2}\.\d+/gi, 'Web Hosting Panel'],
      [/\b\d{4}\.\d{2}\.\d+\b/g, ''],
    ];
    const walker = document.createTreeWalker(document.body, NodeFilter.SHOW_TEXT);
    const nodes: Text[] = [];
    let n: Node | null = walker.nextNode();
    while (n) { nodes.push(n as Text); n = walker.nextNode(); }
    for (const node of nodes) {
      let v = node.nodeValue ?? '';
      for (const [re, rep] of swaps) v = v.replace(re, rep);
      if (v !== node.nodeValue) node.nodeValue = v;
    }
  });
}

async function main() {
  await mkdir(OUT_DIR, { recursive: true });
  const browser = await chromium.launch({ headless: true });
  const ctx = await browser.newContext({
    ignoreHTTPSErrors: true,
    viewport: { width: 1440, height: 900 },
    deviceScaleFactor: 2,
  });
  const page = await ctx.newPage();
  try {
    await login(page);

    // Resolve the demo site's traffic view via the "View Traffic" button.
    await page.goto(`${BASE}/index.php?page=site-traffic`, { waitUntil: 'networkidle' });
    await page.locator('a:has-text("View Traffic"), button:has-text("View Traffic")').first().click();
    await page.waitForLoadState('networkidle');
    await page.waitForTimeout(1000);
    const trafficUrl = page.url();

    // 1. Overview — clip to the main content card so the snapshot + daily totals
    //    frame nicely without the empty side gutters.
    await redact(page);
    await page.evaluate(() => window.scrollTo(0, 0));
    await page.waitForTimeout(300);
    await page.screenshot({ path: resolve(OUT_DIR, 'traffic-analytics-overview.png'), fullPage: false });
    console.log('captured traffic-analytics-overview');

    // 2. Day drill-down — click the 23rd (richest demo data), then clip to the
    //    "Breakdown for ..." card (hourly graph + top pages + bandwidth).
    await page.locator('a:has-text("2026-06-23")').first().click();
    await page.waitForLoadState('networkidle');
    await page.waitForTimeout(1500);
    await redact(page);
    const card = page.locator('#day-detail, .card:has-text("Breakdown for")').first();
    await card.scrollIntoViewIfNeeded().catch(() => {});
    await page.waitForTimeout(400);
    if (await card.count()) {
      await card.screenshot({ path: resolve(OUT_DIR, 'traffic-analytics-day-detail.png') });
    } else {
      await page.screenshot({ path: resolve(OUT_DIR, 'traffic-analytics-day-detail.png'), fullPage: false });
    }
    console.log('captured traffic-analytics-day-detail');
    console.log('traffic url was', trafficUrl);
  } finally {
    await browser.close();
  }
}

main().catch((err) => { console.error(err); process.exit(1); });