3 files changed, 201 insertions, 0 deletions
diff --git a/tools/lnurl-auth-unit-test.js b/tools/lnurl-auth-unit-test.js
index 0707a8e..c9989be 100644
--- a/tools/lnurl-auth-unit-test.js
+++ b/tools/lnurl-auth-unit-test.js
@@ -40,3 +40,24 @@ assert.match(got.sig, /^30[0-9a-f]+$/, 'a DER signature');
 globalThis.fetch = async () => new Response(JSON.stringify({ status: 'ERROR', reason: 'no such user' }), { headers: { 'content-type': 'application/json' } });
 await assert.rejects(lnurlAuthLogin(a, k), /no such user/, "the server's reason is the error");
 console.log('✓ lnurl-auth: a login is told from a payment, one key per site per wallet, the signature verifies, the server has the last word');
+
+// ---- LNURL-withdraw (LUD-03) ----
+const { parseZapTarget, withdrawParamsOf, fetchWithdrawParams, submitWithdraw, fetchPayParams } = await import('../src/lnurl.js');
+const w = parseZapTarget('lnurlw://pay.example.com/withdraw?k=1');
+assert.equal(w.url, 'https://pay.example.com/withdraw?k=1', 'lnurlw:// is the URL over https');
+assert.equal(parseZapTarget('LIGHTNING:lnurlp://pay.example.com/.well-known/lnurlp/bob').url, 'https://pay.example.com/.well-known/lnurlp/bob');
+assert.equal(parseZapTarget('lnurlw://abc.onion/w').url, 'http://abc.onion/w', 'an onion over http');
+const terms = { tag: 'withdrawRequest', callback: 'https://pay.example.com/cb', k1: 'k1k1', minWithdrawable: 1000, maxWithdrawable: 50000, defaultDescription: 'faucet' };
+assert.deepEqual(withdrawParamsOf(terms), { callback: 'https://pay.example.com/cb', k1: 'k1k1', minMsat: 1000, maxMsat: 50000, description: 'faucet', domain: 'pay.example.com' });
+assert.equal(withdrawParamsOf({ tag: 'payRequest', callback: 'x' }), null);
+assert.equal(withdrawParamsOf({ ...terms, maxWithdrawable: 0 }), null, 'nothing to withdraw is no withdraw');
+globalThis.fetch = async () => Response.json(terms);
+assert.deepEqual(await fetchWithdrawParams('https://pay.example.com/w'), withdrawParamsOf(terms));
+await assert.rejects(fetchPayParams('https://pay.example.com/w'), (e) => e.withdraw && e.withdraw.k1 === 'k1k1', 'a pay fetch that finds a withdraw says so');
+let cb = null;
+globalThis.fetch = async (url) => { const u = new URL(url); cb = { path: u.pathname, k1: u.searchParams.get('k1'), pr: u.searchParams.get('pr') }; return Response.json({ status: 'OK' }); };
+assert.equal(await submitWithdraw(withdrawParamsOf(terms), 'lnbc1invoice'), true);
+assert.deepEqual(cb, { path: '/cb', k1: 'k1k1', pr: 'lnbc1invoice' }, 'the callback gets k1 and the invoice');
+globalThis.fetch = async () => Response.json({ status: 'ERROR', reason: 'already claimed' });
+await assert.rejects(submitWithdraw(withdrawParamsOf(terms), 'lnbc1invoice'), /already claimed/);
+console.log('✓ lnurl-withdraw: lnurlw:// and lnurlp:// schemes, the terms, a pay fetch that finds a withdraw, the callback, the refusal');
diff --git a/tools/lnurl-withdraw-test.js b/tools/lnurl-withdraw-test.js
new file mode 100644
index 0000000..cc1b152
--- /dev/null
+++ b/tools/lnurl-withdraw-test.js
@@ -0,0 +1,103 @@
+// LNURL-withdraw: a site's withdraw lnurl pasted into Send is an offer to
+// PAY us — the wallet shows their range, makes an invoice for the amount
+// chosen, hands it to their callback and watches for the money. The Ark
+// side is faked (the invoice hook); the site is a stand-in on the test
+// server. Run: bun tools/lnurl-withdraw-test.js
+import assert from 'node:assert/strict';
+import puppeteer from './puppeteer.js';
+import { encodeLnurl } from '../src/lnurl.js';
+
+const app = await Bun.file('src/app.js').text();
+const domHelper = app.slice(app.indexOf('function h(tag,'), app.indexOf('// ---------------------------------------------------------------- morphing'));
+const entry = `
+import { zapsFeature } from './src/features/zaps.js';
+${domHelper}
+const ui = { screen: 'wallet', tab: 'send', send: { recipients: [{ address: '', amount: '' }] } };
+let watch = null, cancelled = [], invoices = 0;
+const wallet = { watchOnly: false, loadFeatureState: (k, d) => d, saveFeatureState: () => {} };
+const ctx = {
+  h, ui, wallet, render, toast: (m) => (window.toasts = (window.toasts || [])).push(m),
+  blankSend: () => ({ recipients: [{ address: '', amount: '' }] }),
+  fmtAmount: (n) => Number(n).toLocaleString('en-US'), unitLabel: () => 'sats', unitTag: () => h('span', { class: 'unit-tag' }, 'sats'),
+  parseAmount: (v) => { const n = Number(String(v).replace(/,/g, '')); return isFinite(n) ? Math.round(n) : null; }, getUnit: () => 'sats',
+  amountField: (sat) => String(sat),
+  hook(name, ...a) {
+    if (name === 'canLnPay') return true;
+    if (name === 'arkLnInvoice') { invoices++; return Promise.resolve({ id: 'ln' + invoices, invoice: 'lnbc' + a[0] + 'n1testinvoice' + invoices, amountSat: a[0] }); }
+    if (name === 'arkLnWatch') { watch = { id: a[0], cb: a[1] }; return true; }
+    if (name === 'arkLnUnwatch') { if (watch && watch.id === a[0]) watch = null; return true; }
+    if (name === 'arkLnCancel') { cancelled.push(a[0]); return Promise.resolve(true); }
+    return null;
+  },
+};
+const feature = zapsFeature(ctx); window.__feature = feature;
+function render() { document.querySelector('#app').replaceChildren(feature.sendView() || h('div', { id: 'closed' }, 'closed')); }
+window.test = { paste: (s) => feature.matchSendText(s, false), settle: (ok) => { const w = watch; watch = null; w.cb({ step: ok ? 'done' : 'failed' }); }, get watch() { return watch && watch.id; }, get cancelled() { return cancelled; }, ui };
+render();
+`;
+const bundle = await Bun.build({
+  entrypoints: ['lnw-test-entry'], target: 'browser',
+  plugins: [{ name: 'lnw-test', setup(build) {
+    build.onResolve({ filter: /^lnw-test-entry$/ }, () => ({ path: 'entry', namespace: 'lnw-test' }));
+    build.onLoad({ filter: /.*/, namespace: 'lnw-test' }, () => ({ contents: entry, loader: 'js', resolveDir: process.cwd() }));
+  } }],
+});
+assert(bundle.success, bundle.logs.join('\n'));
+const css = await Bun.file('src/style.css').text();
+const js = await bundle.outputs[0].text();
+const html = `<!doctype html><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1"><style>${css}</style><div id="app"></div><script type="module">${js}</script>`;
+const claims = [];
+const server = Bun.serve({ port: 0, fetch: (req) => {
+  const u = new URL(req.url);
+  if (u.pathname === '/withdraw') return Response.json({ tag: 'withdrawRequest', callback: server.url.origin + '/cb', k1: 'deadbeef', minWithdrawable: 100000, maxWithdrawable: 5000000, defaultDescription: 'Faucet drip' });
+  if (u.pathname === '/withdraw-fixed') return Response.json({ tag: 'withdrawRequest', callback: server.url.origin + '/cb', k1: 'fixed1', minWithdrawable: 21000, maxWithdrawable: 21000 });
+  if (u.pathname === '/withdraw-spent') return Response.json({ tag: 'withdrawRequest', callback: server.url.origin + '/cb-spent', k1: 'spent', minWithdrawable: 1000, maxWithdrawable: 1000 });
+  if (u.pathname === '/cb') { claims.push({ k1: u.searchParams.get('k1'), pr: u.searchParams.get('pr') }); return Response.json({ status: 'OK' }); }
+  if (u.pathname === '/cb-spent') return Response.json({ status: 'ERROR', reason: 'this voucher was already used' });
+  return new Response(html, { headers: { 'content-type': 'text/html' } });
+} });
+const lnurl = (path) => encodeLnurl(server.url.origin + path);
+const browser = await puppeteer.launch({ executablePath: '/usr/bin/google-chrome', headless: true, args: ['--no-sandbox'] });
+const page = await browser.newPage();
+const errors = [];
+page.on('pageerror', (e) => errors.push(e.message));
+const pause = (ms) => new Promise((r) => setTimeout(r, ms));
+const check = (name, value, detail = '') => { assert(value, name + (detail ? ' — ' + detail : '')); console.log(' ✓ ' + name); };
+const text = () => page.evaluate(() => document.body.innerText.replace(/\s+/g, ' '));
+const waitText = async (re, ms = 5000) => { for (let i = 0; i < ms / 100; i++) { if (re.test(await text())) return true; await pause(100); } return false; };
+const click = (label) => page.evaluate((x) => { const b = [...document.querySelectorAll('button')].find((n) => n.textContent.trim() === x || n.textContent.trim().endsWith(' ' + x)); if (!b) return false; b.click(); return true; }, label);
+const type = (sel, v) => page.evaluate(([s, val]) => { const i = document.querySelector(s); i.value = val; i.dispatchEvent(new Event('input', { bubbles: true })); }, [sel, v]);
+const host = new URL(server.url.origin).hostname;
+try {
+  await page.setViewport({ width: 390, height: 844 });
+  await page.goto(server.url.href);
+  await page.waitForSelector('#closed');
+  console.log('[a withdraw lnurl with a range]');
+  check('the paste is claimed', await page.evaluate((s) => test.paste(s), lnurl('/withdraw')));
+  check('their terms show: the site, the range, the description', await waitText(/Withdraw over Lightning/) && new RegExp(host + ' will pay you between 100 and 5,000 sats').test(await text()) && /Faucet drip/.test(await text()), await text());
+  check('the amount starts at their max', await page.$eval('input[type=number]', (i) => i.value) === '5000');
+  await type('input[type=number]', '9000'); await click('Withdraw'); await pause(100);
+  check('over their max: told the range, nothing sent', /Between 100 and 5,000 sats/.test(await text()) && claims.length === 0);
+  await type('input[type=number]', '1500'); await click('Withdraw');
+  check('an invoice for the amount is handed to their callback', await waitText(new RegExp(host + ' has your invoice for 1,500 sats')) && claims.length === 1 && claims[0].k1 === 'deadbeef' && claims[0].pr === 'lnbc1500n1testinvoice1', JSON.stringify(claims));
+  check('…and the wallet watches for the money', (await page.evaluate(() => test.watch)) === 'ln1');
+  await page.evaluate(() => test.settle(true));
+  check('paid: Received', await waitText(/Received 1,500 sats/) && !!(await page.$('.check-badge')));
+  await click('Done'); await pause(50);
+  check('Done closes it', !!(await page.$('#closed')));
+
+  console.log('[a fixed amount]');
+  await page.evaluate((s) => test.paste(s), lnurl('/withdraw-fixed'));
+  check('a fixed amount is stated, with no field', await waitText(new RegExp(host + ' will pay you 21 sats')) && !(await page.$('input[type=number]')));
+  await click('Withdraw');
+  check('withdrawn at that amount', await waitText(/has your invoice for 21 sats/) && claims[1].pr === 'lnbc21n1testinvoice2', JSON.stringify(claims));
+  await click('Back'); await pause(50);
+  check('Back before it is paid stops watching', (await page.evaluate(() => test.watch)) === null && !!(await page.$('#closed')));
+
+  console.log('[a site that refuses]');
+  await page.evaluate((s) => test.paste(s), lnurl('/withdraw-spent'));
+  await waitText(/will pay you 1 sats/); await click('Withdraw');
+  check("their reason is shown, with Try again", await waitText(/already used/) && /Try again/.test(await text()), await text());
+  check('no page errors', errors.length === 0, errors.join('; '));
+  console.log('\n✅ a withdraw lnurl pays us');
+} catch (e) { console.error('\n❌', e.message); process.exitCode = 1; } finally { await browser.close(); server.stop(true); }
diff --git a/tools/pager-gone-picture-test.js b/tools/pager-gone-picture-test.js
new file mode 100644
index 0000000..683493b
--- /dev/null
+++ b/tools/pager-gone-picture-test.js
@@ -0,0 +1,77 @@
+// A picture whose host is down (its server answers 502, so neither a copy
+// nor the original can load) shows a plain "couldn't be loaded" slide with
+// the host's name, not the browser's broken-picture glyph in a corner
+// (Adam's screenshot, 2026-10-16: isolabellart's relay down). The slides
+// around it are untouched. Run: bun tools/pager-gone-picture-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 = (size) => Bun.spawnSync(['ffmpeg', '-loglevel', 'error', '-f', 'lavfi', '-i', 'testsrc=size=' + size, '-frames:v', '1', '-f', 'image2', '-c:v', 'png', 'pipe:1']).stdout;
+const PICS = { big1: png('2400x1800'), big3: png('2000x2000') };
+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 hits = [];
+const server = Bun.serve({ port: 0, fetch: (req) => {
+  const path = new URL(req.url).pathname;
+  if (path.startsWith('/punks')) return new Response(Bun.file('dist' + path));
+  if (path === '/big2.png') { hits.push('big2'); return new Response('Bad Gateway', { status: 502 }); } // the host is down
+  const m = /^\/(big\d)\.png$/.exec(path);
+  if (m) { hits.push(m[1]); return new Response(PICS[m[1]], { headers: { 'content-type': 'image/png', 'access-control-allow-origin': '*' } }); }
+  return new Response(html, { headers: { 'content-type': 'text/html' } });
+} });
+const U = (n) => server.url.origin + '/' + n + '.png';
+const seeded = [post('first big ' + U('big1'), 100), post('second big ' + U('big2'), 200), post('third big ' + U('big3'), 300),
+  ...Array.from({ length: 10 }, (_, i) => post('filler ' + i + ' ' + 'lorem ipsum dolor sit amet. '.repeat(5), 500 + i * 60))];
+const browser = await puppeteer.launch({ executablePath: '/usr/bin/google-chrome', headless: 'new', args: ['--no-sandbox'] });
+const page = await browser.newPage();
+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 i = s.querySelector('img.mp-media'); const r = s.getBoundingClientRect(); return { k: s.getAttribute('data-k').split('/').pop(), src: (i.getAttribute('src') || '').replace(/^blob:.*/, 'blob:'), cur: s.classList.contains('mp-cur'), willChange: getComputedStyle(i).willChange, on: Math.abs(r.top) < 4 }; }));
+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: 'Picture Poster', t: Date.now() } }));
+    localStorage.setItem('btc-wallet-feed:' + k, 'following');
+  }, [base, AUTHOR, seeded]);
+  await page.reload({ waitUntil: 'domcontentloaded' });
+  await waitText('receive', 20000);
+  await page.evaluate(() => document.querySelector('.app-nav-button[aria-label="Feed"]').click());
+  check('the feed paints its copies of the pictures', await waitFor(() => [...document.querySelectorAll('.notes-feed img.note-img')].filter((i) => i.getAttribute('src').startsWith('blob:')).length >= 2, null, 25000));
+  const at = await page.evaluate(() => { const r = [...document.querySelectorAll('.notes-feed [data-key]')].find((n) => n.textContent.includes('first big')); r.scrollIntoView({ block: 'center' }); const i = r.querySelector('img.note-img').getBoundingClientRect(); return { x: i.x + i.width / 2, y: i.y + i.height / 2 }; });
+  await sleep(300);
+  await page.mouse.click(at.x, at.y);
+  check('the picture opens in the pager', await waitFor(() => !!document.querySelector('.media-pager .mp-slide img.mp-media'), null, 4000));
+  check('the picture that loads is sharpened at rest', await waitFor(() => { const c = document.querySelector('.mp-slide.mp-cur img.mp-media'); return c && c.getAttribute('src').endsWith('/big1.png'); }, null, 5000));
+  await page.keyboard.press('ArrowDown');
+  check('down: the dead picture\'s slide', await waitFor(() => { const c = document.querySelector('.mp-slide.mp-cur'); return c && c.getAttribute('data-k').endsWith('/big2.png'); }, null, 4000));
+  check('it says the picture couldn\'t be loaded, naming the host', await waitFor(() => { const c = document.querySelector('.mp-slide.mp-cur'); return c.classList.contains('mp-gone') && /couldn’t be loaded/.test(c.textContent) && /localhost/.test(c.querySelector('.mp-missing')?.textContent || ''); }, null, 6000), await page.evaluate(() => document.querySelector('.mp-slide.mp-cur').outerHTML.slice(0, 300)));
+  check('…and the broken <img> is hidden', await page.evaluate(() => getComputedStyle(document.querySelector('.mp-slide.mp-cur img.mp-media')).display === 'none'));
+  check('the original was tried after the copy failed', await page.evaluate(() => document.querySelector('.mp-slide.mp-cur img.mp-media').getAttribute('src').endsWith('/big2.png')));
+  await page.keyboard.press('ArrowDown');
+  check('the next slide is fine', await waitFor(() => { const c = document.querySelector('.mp-slide.mp-cur'); return c && c.getAttribute('data-k').endsWith('/big3.png') && !c.classList.contains('mp-gone'); }, null, 4000) && await waitFor(() => document.querySelector('.mp-slide.mp-cur img.mp-media').getAttribute('src').endsWith('/big3.png'), null, 5000));
+  check('its caption and controls are still there on the dead one', await page.evaluate(() => { const g = [...document.querySelectorAll('.mp-slide')].find((x) => x.getAttribute('data-k').endsWith('/big2.png')); return !!g.querySelector('.mp-like') && /second big/.test(g.textContent); }));
+  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✅ a dead picture says so' : '\n❌ failed');
+process.exit(ok ? 0 : 1);