// Turning the phone while a clip plays in the pager leaves that one clip
// playing, and nothing else: not the clip's own copy in the feed under the
// pager (paused when the pager opened; a turn re-lays the feed out, and its
// autoplay used to start it again, from the start, with sound if it had been
// unmuted there), and not the slide a turn's half-way layout passes over.
// Run: bun tools/pager-rotate-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 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 post = (content, ago) => finalizeEvent({ kind: 1, created_at: now - ago, tags: [], content }, SK);
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) return new Response(Bun.file(CLIPS[m[1]]), { headers: { 'content-type': 'video/webm' } });
  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';
const seeded = [
  post('a wide one ' + U('wide'), 100),
  post('a tall one ' + U('tall'), 200),
  post('only words here, nothing to watch', 300),
  post('the last clip ' + U('last'), 400),
  ...Array.from({ length: 10 }, (_, i) => post('filler ' + i + ' ' + 'lorem ipsum dolor sit amet. '.repeat(5), 500 + i * 60)),
];


async function run(unmuteFirst) {
  console.log('\n[' + (unmuteFirst ? 'the clip unmuted in the feed first' : 'the clip as it autoplays (muted) in the feed') + ']');
  const ctx = await browser.createBrowserContext();
  const page = await ctx.newPage();
  await page.evaluateOnNewDocument(() => {
    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);
    // the installed app (no full screen there: the feed stays laid out under the pager)
    const on = () => { try { return localStorage.getItem('__standalone') === '1'; } catch { return false; } };
    const mm = window.matchMedia.bind(window);
    window.matchMedia = (q) => (on() && /display-mode:\s*standalone/.test(q) ? { matches: true, media: q, addEventListener() {}, removeEventListener() {}, addListener() {}, removeListener() {} } : mm(q));
    screen.orientation.lock = () => Promise.resolve();
    screen.orientation.unlock = () => {};
  });
  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; };
  // every player on the page that's going: where it is, what, from when, heard or not
  const playing = () => page.evaluate(() => [...document.querySelectorAll('video')].filter((v) => !v.paused && !v.ended).map((v) => ({ where: v.closest('.media-pager') ? 'pager' : 'feed', src: (v.getAttribute('src') || '').split('/').pop(), t: +v.currentTime.toFixed(1), heard: !v.muted })));
  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');
      localStorage.setItem('__standalone', '1');
    }, [base, AUTHOR, seeded]);
    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 video.note-video', { timeout: 20000 });
    const rowOf = () => page.evaluate(() => { const r = [...document.querySelectorAll('.notes-feed [data-key]')].find((n) => n.textContent.includes('a tall one')); r.querySelector('video.note-video').scrollIntoView({ block: 'center' }); const b = r.querySelector('video.note-video').getBoundingClientRect(); return { x: b.x + b.width * 0.2, y: b.y + b.height * 0.3 }; });
    await rowOf(); await sleep(1500);
    if (unmuteFirst) {
      await page.evaluate(() => { const r = [...document.querySelectorAll('.notes-feed [data-key]')].find((n) => n.textContent.includes('a tall one')); r.querySelector('.vid-sound')?.click(); });
      await sleep(800);
    }
    const at = await rowOf(); await sleep(300);
    await page.mouse.click(at.x, at.y);
    check('the pager opens', await waitFor(() => !!document.querySelector('.media-pager.videos'), null, 4000));
    await waitFor(() => { const v = document.querySelector('.media-pager video[src]'); return v && !v.paused && v.currentTime > 1.5; }, null, 8000);
    let p = await playing();
    check('one clip plays: the pager\'s', p.length === 1 && p[0].where === 'pager', JSON.stringify(p));
    // turn the phone: landscape, a moment, and back
    await page.setViewport({ width: 844, height: 390 }); await sleep(250);
    await page.setViewport({ width: 600, height: 390 }); await sleep(250); // (a turn passes through sizes on its way)
    await page.setViewport({ width: 844, height: 390 }); await sleep(2500);
    p = await playing();
    check('turned on its side: still that one clip, and only it', p.length === 1 && p[0].where === 'pager' && p[0].src === 'tall.webm' && p[0].t > 2, JSON.stringify(p));
    await page.setViewport({ width: 390, height: 844 }); await sleep(2500);
    p = await playing();
    check('turned back: still only it', p.length === 1 && p[0].where === 'pager' && p[0].src === 'tall.webm', JSON.stringify(p));
    check('…on the slide it was on', await page.evaluate(() => { const s = [...document.querySelectorAll('.mp-slide')].find((x) => { const r = x.getBoundingClientRect(); return Math.abs(r.top) < 4 && Math.abs(r.left) < 4; }); return !!s && s.getAttribute('data-k').endsWith('/tall.webm'); }));
    // the feed under the pager laid out so another clip is in view: it doesn't start
    await page.evaluate(() => { const r = [...document.querySelectorAll('.notes-feed [data-key]')].find((n) => n.textContent.includes('a wide one')); r.querySelector('video.note-video').scrollIntoView({ block: 'center' }); });
    await sleep(2000);
    p = await playing();
    check('a clip coming into view in the feed under the pager stays still', p.length === 1 && p[0].where === 'pager', JSON.stringify(p));
    await page.keyboard.press('Escape'); await sleep(1200);
    p = await playing();
    check('closed, the feed\'s own copy may go on (muted autoplay), but not two', p.length <= 1, JSON.stringify(p));
    check('no page errors', errs.length === 0, errs.slice(0, 2).join(' | '));
  } finally { await ctx.close(); }
}
const browser = await puppeteer.launch({ executablePath: '/usr/bin/google-chrome', headless: 'new', args: ['--no-sandbox', '--autoplay-policy=no-user-gesture-required'] });
try { await run(false); await run(true); } finally { await browser.close(); server.stop(true); }
console.log(ok ? '\n✅ a turn leaves one clip playing' : '\n❌ failed');
process.exit(ok ? 0 : 1);