/**
 * Discovery script — logs in, captures the dashboard, and probes the sidebar
 * nav to learn the actual URLs of the sections referenced in our docs.
 *
 * Not committed for ongoing use; the canonical capture is run.ts.
 */
import { chromium, type Page } from 'playwright';
import { mkdir, writeFile } from 'node:fs/promises';
import { resolve, dirname } from 'node:path';
import { fileURLToPath } from 'node:url';

const __dirname = dirname(fileURLToPath(import.meta.url));
const OUT_DIR = resolve(__dirname, '../../src/assets/screenshots/whp');

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');

async function login(page: Page): Promise<void> {
  console.log(`navigating ${BASE}/login.php`);
  await page.goto(`${BASE}/login.php`, { waitUntil: 'domcontentloaded' });
  console.log(`landed at ${page.url()}`);

  await page.fill('input[name="user"]', USER);
  await page.fill('input[name="password"]', PASS);
  await page.click('button[type="submit"]');
  await page.waitForLoadState('networkidle');
  console.log(`logged in, now at ${page.url()}`);
}

async function snapshotPage(page: Page, id: string): Promise<void> {
  await mkdir(OUT_DIR, { recursive: true });
  const path = resolve(OUT_DIR, `${id}.png`);
  await page.screenshot({ path, fullPage: false });
  console.log(`captured ${id} -> ${path}`);
}

async function listNavLinks(page: Page): Promise<{ text: string; href: string | null }[]> {
  // Use locator API to collect all anchors with hrefs (no string-eval).
  const anchors = page.locator('a[href]');
  const count = await anchors.count();
  const out: { text: string; href: string | null }[] = [];
  for (let i = 0; i < count && out.length < 120; i++) {
    const a = anchors.nth(i);
    const href = await a.getAttribute('href');
    if (!href || href.startsWith('#')) continue;
    const text = ((await a.textContent()) ?? '').trim().slice(0, 60);
    if (!text) continue;
    out.push({ text, href });
  }
  return out;
}

async function probe(page: Page, label: string, hrefHint: string): Promise<string | null> {
  const link = page.locator(`a[href*="${hrefHint}"]`).first();
  if ((await link.count()) === 0) {
    console.log(`  NO MATCH for "${label}" (hint=${hrefHint})`);
    return null;
  }
  const href = await link.getAttribute('href');
  console.log(`  ${label}: ${href}`);
  return href;
}

async function main(): Promise<void> {
  const browser = await chromium.launch({ headless: true });
  const ctx = await browser.newContext({
    ignoreHTTPSErrors: true,
    viewport: { width: 1440, height: 900 },
  });
  const page = await ctx.newPage();

  try {
    await login(page);
    await snapshotPage(page, '_discovery-dashboard');

    const navLinks = await listNavLinks(page);
    await writeFile(
      resolve(__dirname, '_discovered-nav.json'),
      JSON.stringify(navLinks, null, 2),
    );
    console.log(`wrote ${navLinks.length} nav links to _discovered-nav.json`);

    for (const [label, hint] of [
      ['Domains', 'domain'],
      ['Sites', 'site'],
      ['Email', 'email'],
      ['Backups', 'backup'],
      ['Monitor', 'monitor'],
      ['Resources', 'resource'],
      ['Dashboard', 'dashboard'],
    ] as const) {
      await probe(page, label, hint);
    }
  } finally {
    await browser.close();
  }
}

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