// A YouTube clip in a post takes one tap, like any clip: on the picture —
// the still, or the player already going (autoplayed, muted) — it plays with
// sound, full screen. The player's own taps never reach the page, so a layer
// over the picture takes them; YouTube's control bar along the bottom is
// left to YouTube, and full screen the layer steps aside.
// Run: bun tools/youtube-tap-test.js
import puppeteer from './puppeteer.js';
import { cacheKeyFor } from '../src/wallet.js';
import { generateSecretKey, getPublicKey, finalizeEvent } from 'nostr-tools/pure';
import { buildHtml } from '../build.js';
const sleep = (ms) => new Promise((r) => setTimeout(r, ms));
let ok = true;
const check = (n, c, d = '') => { console.log(` ${c ? '✓' : '✗'} ${n}${d ? ' — ' + d : ''}`); if (!c) ok = false; };
const png = Bun.spawnSync(['ffmpeg', '-loglevel', 'error', '-f', 'lavfi', '-i', 'testsrc=size=480x360', '-frames:v', '1', '-f', 'image2', '-c:v', 'png', 'pipe:1']).stdout;

const SK = generateSecretKey(), AUTHOR = getPublicKey(SK);
const now = Math.floor(Date.now() / 1000);
const POSTS = [
  finalizeEvent({ kind: 1, created_at: now - 100, tags: [], content: 'watch this https://www.youtube.com/watch?v=dQw4w9WgXcQ' }, SK),
  ...Array.from({ length: 4 }, (_, i) => finalizeEvent({ kind: 1, created_at: now - 200 - i * 60, tags: [], content: 'filler ' + i + ' ' + 'lorem ipsum dolor sit amet. '.repeat(5) }, SK)),
];
const html = await buildHtml({ minify: true, pwa: false });
const server = Bun.serve({ port: 0, fetch: (req) => {
  const path = new URL(req.url).pathname;
  if (path.startsWith('/punks') || path === '/verify-worker.js') return new Response(Bun.file('dist' + path));
  return new Response(html, { headers: { 'content-type': 'text/html' } });
} });
// YouTube, stood in for: the player page notes every command it is sent
const PLAYER = '<!doctype html><html><body style="margin:0;background:#222;height:100vh"><script>window.__cmds=[];addEventListener("message",(e)=>{try{const m=JSON.parse(e.data);if(m.event==="command")window.__cmds.push(m.func)}catch{}});</script></body></html>';

const browser = await puppeteer.launch({ executablePath: '/usr/bin/google-chrome', headless: 'new', args: ['--no-sandbox', '--autoplay-policy=no-user-gesture-required'] });
async function run(saveData) {
  console.log('\n[' + (saveData ? 'Data Saver: the still first' : 'autoplay: the player already going, muted') + ']');
  const ctx = await browser.createBrowserContext();
  const page = await ctx.newPage();
  await page.setRequestInterception(true);
  page.on('request', (r) => {
    const u = r.url();
    if (u.startsWith('https://www.youtube-nocookie.com/embed/')) return r.respond({ status: 200, contentType: 'text/html', body: PLAYER });
    if (u.startsWith('https://i.ytimg.com/')) return r.respond({ status: 200, contentType: 'image/png', body: png });
    return r.continue();
  });
  await page.evaluateOnNewDocument((sd) => {
    if (sd) Object.defineProperty(navigator, 'connection', { configurable: true, get: () => ({ saveData: true, effectiveType: '4g', addEventListener() {}, removeEventListener() {} }) });
    const Real = window.WebSocket;
    window.WebSocket = function (...a) { const ws = new Real(...a); const send = ws.send.bind(ws); ws.send = (d) => { try { const m = JSON.parse(d); if (m[0] === 'REQ') { setTimeout(() => ws.dispatchEvent(new MessageEvent('message', { data: JSON.stringify(['EOSE', m[1]]) })), 0); return; } if (m[0] === 'EVENT') return; } catch {} return send(d); }; return ws; };
    window.WebSocket.prototype = Real.prototype; Object.assign(window.WebSocket, Real);
  }, saveData);
  const errs = [];
  page.on('pageerror', (e) => errs.push(String(e)));
  const click = (t) => page.evaluate((x) => { const e = [...document.querySelectorAll('button')].find((n) => n.textContent.trim().toLowerCase().includes(x)); if (e) { e.click(); return true; } return false; }, t);
  const waitText = async (x, ms = 25000) => { for (let i = 0; i < ms / 250; i++) { if ((await page.evaluate(() => document.body.innerText)).toLowerCase().includes(x)) return true; await sleep(250); } return false; };
  const waitFor = async (fn, arg, ms = 10000) => { for (let i = 0; i < ms / 100; i++) { if (await page.evaluate(fn, arg)) return true; await sleep(100); } return false; };
  const box = () => page.evaluate(() => { const b = document.querySelector('.notes-feed .yt-embed').getBoundingClientRect(); return { x: b.x, y: b.y, w: b.width, h: b.height }; });
  const st = () => page.evaluate(() => { const b = document.querySelector('.yt-embed'); const f = b && b.querySelector('iframe'); const sh = b && b.querySelector('.yt-shield'); return { fs: !!b && document.fullscreenElement === b, iframe: !!f, muted: !!f && /mute=1/.test(f.src), shield: !!sh && getComputedStyle(sh).display !== 'none', thread: !!document.querySelector('.thread-card') }; });
  const cmds = async () => { const f = page.frames().find((x) => x.url().startsWith('https://www.youtube-nocookie.com/')); return f ? f.evaluate(() => window.__cmds.slice()) : null; };
  try {
    await page.setViewport({ width: 390, height: 844 });
    await page.goto(server.url.href, { waitUntil: 'domcontentloaded' });
    await page.evaluate(() => localStorage.setItem('btc-wallet-network', 'regtest'));
    await page.reload({ waitUntil: 'domcontentloaded' }); await sleep(400);
    await click('create a new wallet'); await sleep(600);
    await page.waitForSelector('.words .w .t');
    const mn = (await page.$$eval('.words .w .t', (l) => l.map((e) => e.textContent.trim()))).join(' ');
    await click('skip verification');
    await waitText('receive', 20000);
    const base = cacheKeyFor(mn + '\n');
    await page.evaluate(([k, pk, ns]) => {
      localStorage.setItem(k + ':follows', JSON.stringify({ tags: [['p', pk]], c: '', at: Math.floor(Date.now() / 1000) }));
      localStorage.setItem(k + ':feedNotes', JSON.stringify(ns));
      localStorage.setItem(k + ':profiles', JSON.stringify({ [pk]: { name: 'Tuber', t: Date.now() } }));
      localStorage.setItem('btc-wallet-feed:' + k, 'following');
    }, [base, AUTHOR, POSTS]);
    await page.reload({ waitUntil: 'domcontentloaded' });
    await waitText('receive', 20000);
    await page.evaluate(() => document.querySelector('.app-nav-button[aria-label="Feed"]').click());
    await page.waitForSelector('.notes-feed .yt-embed', { timeout: 20000 });
    await page.evaluate(() => document.querySelector('.notes-feed .yt-embed').scrollIntoView({ block: 'center' }));
    await sleep(1500);
    let s = await st();
    if (!saveData) {
      check('in view, the player loads by itself, muted', s.iframe && s.muted, JSON.stringify(s));
      check('…with a layer over its picture', s.shield);
      await waitFor(() => !!document.querySelector('.yt-embed iframe'), null, 3000);
      await sleep(500);
      // YouTube's control bar along the bottom is YouTube's
      let b = await box();
      await page.mouse.click(b.x + b.w * 0.3, b.y + b.h - 20); await sleep(500);
      check('a tap on YouTube\'s control bar stays YouTube\'s', !(await st()).fs && !(await st()).thread, JSON.stringify(await st()));
    } else {
      check('with Data Saver, the still and a play button', !s.iframe && await page.evaluate(() => !!document.querySelector('.yt-embed .yt-play')), JSON.stringify(s));
    }
    const b = await box();
    await page.mouse.click(b.x + b.w * 0.3, b.y + b.h * 0.35);
    check('one tap on the picture: full screen', await waitFor(() => document.fullscreenElement === document.querySelector('.yt-embed'), null, 3000), JSON.stringify(await st()));
    s = await st();
    check('…the player there', s.iframe);
    check('…with sound', saveData ? !s.muted : (await waitFor(() => true, null, 300)) && (await cmds())?.includes('unMute'), saveData ? JSON.stringify(s) : JSON.stringify(await cmds()));
    if (!saveData) check('…playing', (await cmds())?.includes('playVideo'));
    check('…not the thread', !s.thread);
    check('full screen, the layer steps aside (YouTube\'s controls are all there)', !s.shield, JSON.stringify(s));
    await page.evaluate(() => document.exitFullscreen()); await sleep(500);
    s = await st();
    check('out of full screen, the layer is back', s.shield && !s.fs, JSON.stringify(s));
    check('no page errors', errs.length === 0, errs.slice(0, 2).join(' | '));
  } finally { await ctx.close(); }
}
try { await run(false); await run(true); } finally { await browser.close(); server.stop(true); }
console.log(ok ? '\n✅ a YouTube clip: one tap, full screen, with sound' : '\n❌ failed');
process.exit(ok ? 0 : 1);