// The video pager's caption is the post's words with their names, tags and
// links live: a tap on @someone leaves the pager and opens their profile
// (a plain excerpt left "@NostrValley" dead); a tap anywhere else on the
// caption leaves the pager and opens the post, where the whole caption
// reads. A link to the web opens in its own tab and the pager stays.
// Run: bun tools/pager-caption-test.js
import puppeteer from './puppeteer.js';
import { cacheKeyFor } from '../src/wallet.js';
import { generateSecretKey, getPublicKey, finalizeEvent } from 'nostr-tools/pure';
import { npubEncode } from 'nostr-tools/nip19';
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') };
const SK = generateSecretKey(), AUTHOR = getPublicKey(SK), VALLEY = getPublicKey(generateSecretKey());
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)\.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 post = (content, ago) => finalizeEvent({ kind: 1, created_at: now - ago, tags: [], content }, SK);
const seeded = [
  post('Opening night nostr:' + npubEncode(VALLEY) + ' downtown entertainment, a long night of it with music and more ' + U('wide'), 100),
  post('a tall one https://example.com/about ' + U('tall'), 200),
  ...Array.from({ length: 6 }, (_, i) => post('filler ' + i + ' lorem ipsum dolor sit amet. '.repeat(4), 600 + i * 60)),
];

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(() => {
  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);
  window.__opened = [];
  window.open = (u) => { window.__opened.push(String(u)); return null; };
});
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 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);
  const opened = await waitFor(() => !!document.querySelector('.media-pager.videos .mp-slide'), null, 4000);
  // the caption and the counts show on a tap on the clip (details), as a reader sees them
  await sleep(500);
  await page.mouse.click(195, 300);
  await waitFor(() => !!document.querySelector('.media-pager.show'), null, 3000);
  return opened;
};
// the caption of the slide on screen
const CAP = () => { const s = [...document.querySelectorAll('.mp-slide')].find((x) => Math.abs(x.getBoundingClientRect().top) < 4); return s && s.querySelector('.mp-caption'); };
const caption = () => page.evaluate((cap) => { const c = eval(cap)(); return c ? { text: c.innerText, links: [...c.querySelectorAll('a')].map((a) => a.textContent) } : null; }, '(' + CAP + ')');
const clickIn = async (sel, where) => {
  const at = await page.evaluate(([cap, sel, where]) => {
    const c = eval(cap)(); const el = sel ? c.querySelector(sel) : c; const r = el.getBoundingClientRect();
    // the caption's first word sits at its left edge; a link in the middle
    return where === 'start' ? { x: r.left + 12, y: r.top + 9 } : { x: r.left + r.width / 2, y: r.top + r.height / 2 };
  }, ['(' + CAP + ')', sel, where]);
  await page.mouse.click(at.x, at.y);
};
const toFeed = async () => { await page.evaluate(() => document.querySelector('.app-nav-button[aria-label="Feed"]').click()); await waitFor(() => !!document.querySelector('.notes-feed video.note-video'), null, 8000); };

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, valley, 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: 'OpenMike', t: Date.now() }, [valley]: { name: 'NostrValley', about: 'the valley bio here', t: Date.now() } }));
    localStorage.setItem('btc-wallet-feed:' + k, 'following');
  }, [base, AUTHOR, VALLEY, seeded]);
  await page.reload({ waitUntil: 'domcontentloaded' });
  await waitText('receive', 20000);
  await toFeed();

  console.log('\n[a name in the caption]');
  check('the pager opens on the clip', await openClip('Opening night'));
  await sleep(500);
  let c = await caption();
  check('the caption shows the post\'s words with the name in them', !!c && /Opening night @NostrValley downtown/.test(c.text), JSON.stringify(c));
  check('…and the name is a link', !!c && c.links.includes('@NostrValley'), JSON.stringify(c));
  await clickIn('a', 'middle');
  check('a tap on the name leaves the pager', await waitFor(() => !document.querySelector('.media-pager'), null, 3000));
  check('…out of full screen', await page.evaluate(() => !document.fullscreenElement));
  check('…on their profile', await waitText('the valley bio here', 6000));

  console.log('\n[the caption\'s own words]');
  await toFeed();
  check('the pager opens again', await openClip('Opening night'));
  await sleep(500);
  await clickIn(null, 'start');
  check('a tap on the words leaves the pager', await waitFor(() => !document.querySelector('.media-pager'), null, 3000));
  check('…and opens the post', await waitFor(() => !!document.querySelector('.thread-page') && document.body.innerText.includes('a long night of it with music and more'), null, 6000));

  console.log('\n[a link to the web]');
  await toFeed();
  check('the pager opens on the other clip', await openClip('a tall one'));
  await sleep(500);
  c = await caption();
  check('its link is a link', !!c && c.links.some((l) => /example\.com/.test(l)), JSON.stringify(c));
  const newTab = new Promise((r) => browser.once('targetcreated', (t) => r(t.url())));
  await clickIn('a[href^="http"]', 'middle');
  const tab = await Promise.race([newTab, sleep(3000).then(() => null)]);
  check('a tap on it opens the page in its own tab', !!tab && /example\.com\/about/.test(tab), String(tab));
  check('…and the pager stays open', await page.evaluate(() => !!document.querySelector('.media-pager') && location.pathname !== '/about'));
  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✅ the pager\'s caption: names open profiles, words open the post, web links stay' : '\n❌ failed');
process.exit(ok ? 0 : 1);