// A clip that plays by itself in the video pager has no thumbnail poster:
// every poster there was came 480px wide and from some moment of the
// clip, so it showed soft for a beat and the clip's first frame replaced
// it — a flash on every flick. What the clip ahead holds instead is its
// own first frame, full size, drawn from the opening of the file: the
// flick glides onto the very picture the player shows first. On a
// connection to be careful with (Data Saver), where a clip may never load,
// the thumbnail poster stays.
// Run: bun tools/pager-no-poster-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';
import { existsSync } from 'node:fs';
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=320x180', '-frames:v', '1', '-f', 'image2', '-c:v', 'png', 'pipe:1']).stdout;
const clip = (name, size) => {
  const f = '/tmp/coinos-vpager-' + name + '.webm';
  if (!existsSync(f)) Bun.spawnSync(['ffmpeg', '-y', '-loglevel', 'error', '-f', 'lavfi', '-i', 'testsrc=size=' + size + ':rate=10', '-t', '30', '-c:v', 'libvpx', '-b:v', '100k', f]);
  return f;
};
const CLIPS = { wide: clip('wide', '320x180'), tall: clip('tall', '180x320'), last: clip('last', '240x240') };
const SK = generateSecretKey(), AUTHOR = getPublicKey(SK);
const now = Math.floor(Date.now() / 1000);
const html = await buildHtml({ minify: true, pwa: false });
const server = Bun.serve({ port: 0, fetch: (req) => {
  const path = new URL(req.url).pathname;
  const m = /^\/(wide|tall|last)\.webm$/.exec(path);
  if (m) {
    // a host that serves ranges, as the real ones do
    const f = Bun.file(CLIPS[m[1]]), range = /^bytes=(\d+)-(\d*)$/.exec(req.headers.get('range') || '');
    if (!range) return new Response(f, { headers: { 'content-type': 'video/webm', 'accept-ranges': 'bytes' } });
    const a = +range[1], b = range[2] ? Math.min(+range[2], f.size - 1) : f.size - 1;
    return new Response(f.slice(a, b + 1), { status: 206, headers: { 'content-type': 'video/webm', 'accept-ranges': 'bytes', 'content-range': 'bytes ' + a + '-' + b + '/' + f.size, 'content-length': String(b - a + 1) } });
  }
  if (path === '/still.png') return new Response(png, { headers: { 'content-type': 'image/png' } });
  if (path.startsWith('/punks') || path === '/verify-worker.js') return new Response(Bun.file('dist' + path));
  return new Response(html, { headers: { 'content-type': 'text/html' } });
} });
const U = (n) => server.url.origin + '/' + n + '.webm';
// each clip's post names a poster for it (imeta), the way uploaders do
const post = (content, url, ago) => finalizeEvent({ kind: 1, created_at: now - ago, tags: [['imeta', 'url ' + url, 'image ' + server.url.origin + '/still.png', 'm video/webm']], content }, SK);
const seeded = [post('a wide one ' + U('wide'), U('wide'), 100), post('a tall one ' + U('tall'), U('tall'), 200), post('the last clip ' + U('last'), U('last'), 400),
  ...Array.from({ length: 6 }, (_, i) => finalizeEvent({ kind: 1, created_at: now - 600 - i * 60, tags: [], content: 'filler ' + i + ' lorem ipsum dolor sit amet. '.repeat(4) }, SK))];

const browser = await puppeteer.launch({ executablePath: '/usr/bin/google-chrome', headless: 'new', args: ['--no-sandbox', '--autoplay-policy=no-user-gesture-required'] });
const page = await browser.newPage();
await page.evaluateOnNewDocument(() => {
  window.__conn = { saveData: localStorage.getItem('__saveData') === '1' }; // (survives the reloads)
  Object.defineProperty(navigator, 'connection', { value: window.__conn, configurable: true });
  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);
});
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 slides = () => page.evaluate(() => [...document.querySelectorAll('.mp-slide')].map((s) => { const v = s.querySelector('video.mp-media'); const r = s.getBoundingClientRect(); return { clip: s.getAttribute('data-k').split('/').pop(), poster: v.getAttribute('poster'), src: !!v.getAttribute('src'), playing: !v.paused, here: Math.abs(r.top) < 4 }; }));
const openClip = async (word) => {
  await page.evaluate((w) => { const r = [...document.querySelectorAll('.notes-feed [data-key]')].find((n) => n.textContent.includes(w)); r.querySelector('video.note-video').scrollIntoView({ block: 'center' }); }, word);
  await sleep(400);
  const at = await page.evaluate((w) => { const r = [...document.querySelectorAll('.notes-feed [data-key]')].find((n) => n.textContent.includes(w)); const b = r.querySelector('video.note-video').getBoundingClientRect(); return { x: b.x + b.width * 0.2, y: b.y + b.height * 0.3 }; }, word);
  await page.mouse.click(at.x, at.y);
  await waitFor(() => !!document.querySelector('.media-pager.videos'), null, 4000);
};

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: 'Clip Poster', t: Date.now() } }));
    localStorage.setItem('btc-wallet-feed:' + k, 'following');
  }, [base, AUTHOR, seeded]);
  const open = async () => {
    await page.reload({ waitUntil: 'domcontentloaded' });
    await waitText('receive', 20000);
    await page.evaluate(() => document.querySelector('.app-nav-button[aria-label="Feed"]').click());
    check('the clips are in the feed', await waitFor(() => document.querySelectorAll('.notes-feed video.note-video').length >= 3, null, 20000));
    await openClip('a wide one');
    check('the pager opens', await waitFor(() => !!document.querySelector('.media-pager.videos .mp-slide'), null, 4000));
    await waitFor(() => [...document.querySelectorAll('.mp-slide video.mp-media')].some((v) => !v.paused), null, 6000);
    await sleep(600);
    return slides();
  };

  console.log('\n[playing by itself]');
  let s = await open();
  check('the clip on screen plays', s.some((x) => x.here && x.playing), JSON.stringify(s));
  check('…with no poster on it', s.filter((x) => x.here).every((x) => !x.poster), JSON.stringify(s.filter((x) => x.here)));
  check('…no thumbnail on the clips ahead either', s.filter((x) => !x.here).every((x) => !/still\.png/.test(x.poster || '')), JSON.stringify(s.filter((x) => !x.here)));
  check('the next clip holds its own first frame', await waitFor(() => { const v = [...document.querySelectorAll('.mp-slide')].find((x) => x.getAttribute('data-k').endsWith('/tall.webm'))?.querySelector('video.mp-media'); return !!v && /^blob:/.test(v.getAttribute('poster') || ''); }, null, 8000), JSON.stringify(await slides()));
  const frame = await page.evaluate(() => new Promise((r) => { const v = [...document.querySelectorAll('.mp-slide')].find((x) => x.getAttribute('data-k').endsWith('/tall.webm')).querySelector('video.mp-media'); const im = new Image(); im.onload = () => r({ w: im.naturalWidth, h: im.naturalHeight }); im.onerror = () => r(null); im.src = v.getAttribute('poster'); }));
  check('…full size, the clip\'s own shape', !!frame && frame.w === 180 && frame.h === 320, JSON.stringify(frame));
  check('…and the clip after it, not yet near, holds nothing', s.some((x) => x.clip === 'last.webm' && !x.poster), JSON.stringify(s));
  await page.keyboard.press('ArrowDown'); await sleep(900);
  s = await slides();
  check('the next clip plays, its first frame under it', s.some((x) => x.here && x.playing && /^blob:/.test(x.poster || '') && x.clip === 'tall.webm'), JSON.stringify(s));
  check('…and the one after now holds its first frame', await waitFor(() => { const v = [...document.querySelectorAll('.mp-slide')].find((x) => x.getAttribute('data-k').endsWith('/last.webm'))?.querySelector('video.mp-media'); return !!v && /^blob:/.test(v.getAttribute('poster') || ''); }, null, 8000));
  await page.keyboard.press('Escape'); await sleep(500);

  console.log('\n[a careful connection: the poster stays]');
  await page.evaluate(() => { localStorage.setItem('__saveData', '1'); });
  s = await open();
  check('the slides carry their posters', s.length >= 3 && s.every((x) => /still\.png$/.test(x.poster || '')), JSON.stringify(s));
  check('no page errors', errs.length === 0, errs.slice(0, 2).join(' | '));
} catch (e) { console.error(e); ok = false; } finally { await browser.close(); server.stop(true); }
console.log(ok ? '\n✅ an autoplaying clip starts on its own first frame, the one ahead holds it already' : '\n❌ failed');
process.exit(ok ? 0 : 1);