sirius/js/studio.js

// Sirius Studio — a site builder for BCNR names.
//
// GrapesJS (BSD-3, vendored under ./vendor/grapesjs/) edits the page. On
// Publish the exported HTML+CSS becomes index.html in the name's own folder
// on Sia — bns/<name>/ — uploaded through the gateway's /api/site route,
// every request signed with the wallet key that holds the name's NFT. The
// editor's project data is saved next to it (_studio.json) so the site can
// be reopened and edited later. If the name's on-chain s3 record does not
// point at that folder yet, Publish also sends one UPD that sets it.
//
// The gateway never holds a key: it verifies each upload's signature
// against the current NFT owner and refuses writes outside bns/<name>/.

import * as BNS from "https://silentmode.st/js/bns-register.js?v=20260917market";

const API = "https://silentmode.st";
const $ = (id) => document.getElementById(id);
const esc = (s) => String(s ?? "").replace(/[&<>"']/g, (c) => ({ "&": "&amp;", "<": "&lt;", ">": "&gt;", '"': "&quot;", "'": "&#39;" }[c]));
const name = (new URLSearchParams(location.search).get("name") || "").toLowerCase().trim();
const folder = name ? `bns/${name}/` : null;
const readUrl = (path) => `${API}/api/site/${encodeURIComponent(name)}/${path}`;
const siteUrl = () => `${API}/bns/${encodeURIComponent(name)}/`;

let wallet = null;
let entry = null;      // { records, category, ... } from /api/name
let editor = null;
let dirty = false;

function status(text, cls = "") { const el = $("status"); el.textContent = text; el.className = "st " + cls; }

// ---------- session ----------
async function restoreWallet() {
  if (window.siriusWallet) return window.siriusWallet;
  const S = window.siriusSession;
  if (!S?.restore) return null;
  try {
    const s = await S.restore();
    if (!s?.mnemonic) return null;
    return await BNS.BuiltInWallet.fromMnemonic(s.mnemonic, BNS.CHIPNET_PREFIX, s.accountPath || undefined);
  } catch { return null; }
}

// ---------- signed uploads ----------
const hex = (buf) => [...new Uint8Array(buf)].map((b) => b.toString(16).padStart(2, "0")).join("");
async function signedHeaders(path, bodyBytes) {
  const ts = String(Date.now());
  const bodyHash = hex(await crypto.subtle.digest("SHA-256", bodyBytes));
  const msg = `BNS-SITE1\n${name}\n${path}\n${bodyHash}\n${ts}`;
  const digest = new Uint8Array(await crypto.subtle.digest("SHA-256", new TextEncoder().encode(msg)));
  const sig = wallet.signMessage(digest);
  return { "x-bns-ts": ts, "x-bns-sig": btoa(String.fromCharCode(...sig)) };
}
async function putFile(path, body, contentType) {
  const bytes = body instanceof Uint8Array ? body : new Uint8Array(await new Blob([body]).arrayBuffer());
  const headers = { "content-type": contentType, ...(await signedHeaders(path, bytes)) };
  const r = await fetch(readUrl(path), { method: "PUT", headers, body: bytes });
  const j = await r.json().catch(() => ({}));
  if (!r.ok) throw new Error(`${path}: ${j.error || r.status}`);
  return j;
}
async function listFiles(live = false) {
  const r = await fetch(`${API}/api/site/${encodeURIComponent(name)}${live ? "?src=live" : ""}`, { cache: "no-store" });
  if (!r.ok) return { files: [], prefix: null, source: null };
  const j = await r.json().catch(() => ({}));
  return { files: j.files || [], prefix: j.prefix ?? null, source: j.source ?? null };
}

// ---------- import the page the name serves right now ----------
// Sites are hosted three ways: the Studio folder bns/<name>/, a CLI-published
// bucket the `s3` record points at (bns/<label>/ by convention), or inline
// HTML in the `h` record. The editor must start from whichever one is live,
// not from an empty Studio folder. Relative URLs are made absolute against
// the public site URL so the canvas shows the real images and links, and
// stylesheets are inlined so the imported page keeps its look.
let extraHeadLinks = []; // cross-origin stylesheets we could not inline (fonts CDNs)
function liveSource() {
  const rec = entry?.records || {};
  const s3 = typeof rec.s3 === "string" ? rec.s3.trim().replace(/\/?$/, "/") : "";
  if (s3 && s3 !== folder) return { kind: "s3", label: s3 };
  if (!s3 && typeof rec.h === "string" && rec.h) return { kind: "inline", label: "the inline h record" };
  if (s3 === folder) return { kind: "studio", label: folder };
  return null;
}
async function fetchLiveHtml() {
  const src = liveSource();
  if (!src) return null;
  const url = src.kind === "studio" ? readUrl("index.html") : readUrl("index.html") + "?src=live";
  const r = await fetch(url, { cache: "no-store" });
  if (!r.ok) return null;
  return { html: await r.text(), base: siteUrl(), src };
}
async function importHtml(html, base) {
  const doc = new DOMParser().parseFromString(html, "text/html");
  doc.querySelectorAll("script, base, noscript").forEach((n) => n.remove());
  const isRel = (u) => !!u && !/^(https?:|data:|blob:|mailto:|tel:|#|\/\/|javascript:)/i.test(u.trim());
  const abs = (u) => { try { return new URL(u.trim(), base).href; } catch { return u; } };
  doc.querySelectorAll("[src]").forEach((el) => { const v = el.getAttribute("src"); if (isRel(v)) el.setAttribute("src", abs(v)); });
  doc.querySelectorAll("[poster]").forEach((el) => { const v = el.getAttribute("poster"); if (isRel(v)) el.setAttribute("poster", abs(v)); });
  doc.querySelectorAll("a[href]").forEach((el) => { const v = el.getAttribute("href"); if (isRel(v)) el.setAttribute("href", abs(v)); });
  doc.querySelectorAll("[srcset]").forEach((el) => {
    el.setAttribute("srcset", el.getAttribute("srcset").split(",").map((part) => { const [u, d] = part.trim().split(/\s+/); return (isRel(u) ? abs(u) : u) + (d ? " " + d : ""); }).join(", "));
  });
  let css = "";
  extraHeadLinks = [];
  for (const link of [...doc.querySelectorAll('link[rel~="stylesheet"][href]')]) {
    const href = link.getAttribute("href");
    const url = isRel(href) ? abs(href) : href;
    try {
      const r = await fetch(url, { cache: "no-store" });
      if (!r.ok) throw new Error(String(r.status));
      css += `\n/* ${url} */\n` + (await r.text()).replace(/url\(\s*(['"]?)([^'")]+)\1\s*\)/g, (m, q, u) => (isRel(u) ? `url(${q}${new URL(u.trim(), url).href}${q})` : m));
    } catch { extraHeadLinks.push(url); }
    link.remove();
  }
  doc.querySelectorAll("style").forEach((st) => { css += "\n" + st.textContent; st.remove(); });
  css = css.replace(/url\(\s*(['"]?)([^'")]+)\1\s*\)/g, (m, q, u) => (isRel(u) ? `url(${q}${abs(u)}${q})` : m));
  editor.setComponents(doc.body.innerHTML);
  editor.setStyle(css);
  // Keep fonts and other cross-origin sheets in the editing canvas too.
  try {
    const head = editor.Canvas.getDocument()?.head;
    if (head) for (const href of extraHeadLinks) { const l = document.createElement("link"); l.rel = "stylesheet"; l.href = href; head.appendChild(l); }
  } catch {}
}
async function importLive({ confirmIfDirty = true } = {}) {
  if (confirmIfDirty && dirty && !confirm("Replace your unsaved changes with the page the name serves right now?")) return false;
  status("Importing the live site…", "busy");
  try {
    const live = await fetchLiveHtml();
    if (!live) { status("The name serves no page yet", "err"); return false; }
    await importHtml(live.html, live.base);
    dirty = true; $("btn-draft").disabled = false;
    $("notice").hidden = true;
    status(`Imported the live site from ${live.src.label}`, "ok");
    return true;
  } catch (e) { status("Import failed: " + (e.message || e), "err"); return false; }
}
function notice(text) { $("notice-text").textContent = text; $("notice").hidden = false; }

// ---------- templates ----------
const TEMPLATES = {
  blank: { html: `<section style="padding:60px 20px;text-align:center"><h1>${esc(name)}</h1><p>Start building.</p></section>`, css: `body{font-family:system-ui,sans-serif;margin:0;color:#111}` },
  landing: {
    html: `
<header class="hero">
  <h1>Hello from ${esc(name)}</h1>
  <p>A name on the Bitcoin Cash chain, a site on Sia. No host, no renewal, no permission.</p>
  <a class="cta" href="#more">Learn more</a>
</header>
<section id="more" class="features">
  <div class="f"><h3>Yours</h3><p>The certificate sits in your wallet. Nobody can take it back.</p></div>
  <div class="f"><h3>Fast</h3><p>Served from Sia through any BCNR resolver or the public gateway.</p></div>
  <div class="f"><h3>Simple</h3><p>Edit this page in Sirius Studio and publish in one click.</p></div>
</section>
<footer class="foot">© ${new Date().getFullYear()} ${esc(name)} · built with Sirius Studio</footer>`,
    css: `
body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;color:#12161f;background:#fff}
.hero{padding:96px 24px 72px;text-align:center;background:linear-gradient(180deg,#0b0e14,#141a24);color:#f1f4fa}
.hero h1{font-size:44px;margin:0 0 12px;letter-spacing:-.01em}
.hero p{font-size:18px;color:#b8c2d4;max-width:560px;margin:0 auto 26px}
.cta{display:inline-block;background:#d6ff3d;color:#0b0e14;font-weight:700;padding:12px 22px;border-radius:10px;text-decoration:none}
.features{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:20px;max-width:960px;margin:0 auto;padding:56px 24px}
.f{background:#f5f7fb;border-radius:14px;padding:22px}
.f h3{margin:0 0 8px}
.f p{margin:0;color:#4a5568}
.foot{text-align:center;padding:28px;color:#6a7488;font-size:13px;border-top:1px solid #e6e9f0}`,
  },
  profile: {
    html: `
<main class="card">
  <div class="avatar">★</div>
  <h1>${esc(name)}</h1>
  <p class="bio">One line about you. Edit me.</p>
  <a class="link" href="https://">Website</a>
  <a class="link" href="https://">Nostr</a>
  <a class="link" href="https://">Bitcoin Cash tips</a>
  <a class="link" href="mailto:">Email</a>
</main>`,
    css: `
body{margin:0;min-height:100vh;display:flex;align-items:center;justify-content:center;background:radial-gradient(circle at 50% 0,#1a2233,#050810);font-family:system-ui,sans-serif;color:#f1f4fa}
.card{width:min(420px,92vw);text-align:center;padding:36px 24px}
.avatar{width:88px;height:88px;border-radius:50%;background:#d6ff3d;color:#0b0e14;font-size:40px;line-height:88px;margin:0 auto 14px}
h1{margin:0 0 6px;font-size:26px}
.bio{color:#b8c2d4;margin:0 0 22px}
.link{display:block;background:#141a24;border:1px solid rgba(255,255,255,.1);color:#f1f4fa;text-decoration:none;padding:14px;border-radius:12px;margin:10px 0;font-weight:600}
.link:hover{border-color:#d6ff3d}`,
  },
  business: {
    html: `
<nav class="nav"><b>${esc(name)}</b><span><a href="#about">About</a><a href="#services">Services</a><a href="#contact">Contact</a></span></nav>
<header class="top"><h1>We are open</h1><p>Say what you do in one sentence.</p></header>
<section id="about" class="sec"><h2>About</h2><p>Two or three sentences about the business, the people and the place.</p></section>
<section id="services" class="sec alt"><h2>Services</h2>
  <ul class="grid"><li><b>Service one</b><span>Short description.</span></li><li><b>Service two</b><span>Short description.</span></li><li><b>Service three</b><span>Short description.</span></li></ul></section>
<section id="contact" class="sec"><h2>Contact</h2><p>Street 1, City · Mon–Fri 9–18 · <a href="mailto:">hello@example</a></p></section>
<footer class="foot">© ${new Date().getFullYear()} ${esc(name)}</footer>`,
    css: `
body{margin:0;font-family:Georgia,serif;color:#2b1d12;background:#fff8f0}
.nav{display:flex;justify-content:space-between;align-items:center;padding:16px 28px;border-bottom:1px solid #eadfd0;font-family:system-ui,sans-serif}
.nav a{margin-left:18px;color:#7a3b00;text-decoration:none}
.top{text-align:center;padding:80px 24px;background:#7a3b00;color:#fff4e6}
.top h1{font-size:42px;margin:0 0 10px}
.sec{max-width:820px;margin:0 auto;padding:48px 24px}
.sec.alt{max-width:none;background:#fff1e0}
.sec.alt h2,.sec.alt ul{max-width:820px;margin-left:auto;margin-right:auto}
.grid{list-style:none;padding:0;display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:16px}
.grid li{background:#fff;border-radius:12px;padding:18px;box-shadow:0 2px 10px rgba(0,0,0,.05)}
.grid b{display:block;margin-bottom:6px}
.foot{text-align:center;padding:24px;color:#8a6d55;font-size:13px}`,
  },
};

// ---------- editor ----------
function plugin(nameOrObj) {
  const p = window[nameOrObj];
  return p && (p.default || p);
}
function initEditor() {
  const plugins = [];
  const pluginsOpts = {};
  const basic = plugin("grapesjs-blocks-basic"); if (basic) { plugins.push(basic); pluginsOpts[basic] = { flexGrid: true }; }
  const preset = plugin("grapesjs-preset-webpage"); if (preset) { plugins.push(preset); pluginsOpts[preset] = { modalImportTitle: "Import HTML", blocks: [] }; }
  editor = grapesjs.init({
    container: "#gjs",
    height: "100%",
    fromElement: false,
    storageManager: false,
    plugins,
    pluginsOpts,
    canvas: { styles: [] },
    assetManager: {
      upload: false,
      uploadFile: async (e) => {
        const files = e.dataTransfer ? e.dataTransfer.files : e.target.files;
        for (const f of files) await uploadAsset(f);
      },
    },
  });
  editor.on("update", () => { dirty = true; $("btn-draft").disabled = false; });
  // Ctrl/Cmd+S saves a draft.
  document.addEventListener("keydown", (e) => { if ((e.ctrlKey || e.metaKey) && e.key === "s") { e.preventDefault(); saveDraft(); } });
  window.addEventListener("beforeunload", (e) => { if (dirty) { e.preventDefault(); e.returnValue = ""; } });
}
function loadTemplate(key) {
  const t = TEMPLATES[key] || TEMPLATES.blank;
  editor.setComponents(t.html);
  editor.setStyle(t.css);
  dirty = true; $("btn-draft").disabled = false;
}
async function uploadAsset(file) {
  const safe = file.name.toLowerCase().replace(/[^a-z0-9._-]/g, "-").replace(/-+/g, "-");
  const path = `assets/${Date.now().toString(36)}-${safe}`;
  status(`Uploading ${file.name}…`, "busy");
  try {
    const bytes = new Uint8Array(await file.arrayBuffer());
    await putFile(path, bytes, file.type || "application/octet-stream");
    editor.AssetManager.add({ src: readUrl(path), name: file.name, type: "image" });
    status(`Uploaded ${file.name}`, "ok");
  } catch (e) { status("Upload failed: " + (e.message || e), "err"); }
}

// Exported page: inline CSS, asset URLs rewritten to be relative to the
// site folder so the page works from Sia, any resolver and the gateway.
function exportHtml() {
  const html = editor.getHtml();
  const css = editor.getCss();
  const rel = (s) => s.split(readUrl("")).join("");
  const links = extraHeadLinks.map((h) => `<link rel="stylesheet" href="${esc(h)}">`).join("\n");
  return `<!doctype html>
<html lang="${esc(document.documentElement.lang || "en")}">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>${esc(name)}</title>
<meta name="generator" content="Sirius Studio">
${links}
<style>
${rel(css)}
</style>
</head>
${rel(html)}
</html>
`;
}

// ---------- draft / publish ----------
function pushStep(t) { const d = document.createElement("div"); d.textContent = t; $("pub-steps").appendChild(d); $("pub-steps").scrollTop = 1e6; }
async function saveDraft() {
  if (!editor || !wallet) return;
  status("Saving draft…", "busy");
  try {
    const data = JSON.stringify({ v: 1, name, saved_at: new Date().toISOString(), project: editor.getProjectData() });
    await putFile("_studio.json", data, "application/json");
    dirty = false; $("btn-draft").disabled = true;
    status("Draft saved on Sia", "ok");
  } catch (e) { status("Draft not saved: " + (e.message || e), "err"); }
}
async function publish() {
  if (!editor || !wallet) return;
  $("pub-name").textContent = name; $("pub-steps").innerHTML = ""; $("pub-view").hidden = true; $("pub").hidden = false;
  $("btn-publish").disabled = true;
  try {
    const html = exportHtml();
    pushStep(`exported page · ${html.length.toLocaleString()} bytes`);
    const res = await putFile("index.html", html, "text/html; charset=utf-8");
    pushStep(`uploaded index.html → ${res.sia_key}`);
    const data = JSON.stringify({ v: 1, name, saved_at: new Date().toISOString(), project: editor.getProjectData() });
    await putFile("_studio.json", data, "application/json");
    pushStep("saved editor project (_studio.json)");
    dirty = false; $("btn-draft").disabled = true;
    // Point the name at the folder if it does not already.
    const rec = entry?.records || {};
    if (rec.s3 !== folder) {
      pushStep(`name points at ${rec.s3 ? `"${rec.s3}"` : "nothing"} — setting s3 = ${folder} on chain`);
      const next = { ...rec, s3: folder };
      delete next.h; // inline HTML would shadow the Sia site
      let el = null;
      try {
        el = await BNS.connect();
        const r = await BNS.setRecordsWithBuiltInWallet(el, { wallet, name, records: next, onProgress: (s) => pushStep(String(s)) });
        pushStep(`broadcast ${r.txid || r.txId || ""}`);
        entry = { ...(entry || {}), records: next };
      } finally { try { el?.close?.(); } catch {} }
      pushStep("resolvers switch to the new site within a block");
    } else {
      pushStep("name already points at this folder — live now");
    }
    $("pub-view").href = siteUrl(); $("pub-view").hidden = false;
    $("btn-view").href = siteUrl(); $("btn-view").hidden = false;
    status("Published", "ok");
  } catch (e) {
    pushStep("error: " + (e.message || e));
    status("Publish failed", "err");
  } finally { $("btn-publish").disabled = false; }
}

// ---------- boot ----------
(async function boot() {
  if (!name) { location.replace("./portal.html#studio"); return; }
  $("site-name").innerHTML = `${esc(name.split(".")[0])}.<span class="tld">${esc(name.split(".").slice(1).join("."))}</span>`;
  $("picker-name").textContent = name;
  document.title = `${name} — Sirius Studio`;
  wallet = await restoreWallet();
  if (!wallet) { $("gate-link").href = `./portal.html?next=${encodeURIComponent(location.pathname + location.search)}`; $("gate").hidden = false; status("Not signed in", "err"); return; }
  status("Loading name…");
  try { const r = await fetch(`${API}/api/name/${encodeURIComponent(name)}`, { cache: "no-store" }); entry = r.ok ? await r.json() : null; } catch { entry = null; }
  initEditor();
  $("btn-publish").disabled = false;
  const src = liveSource();
  if (src) { $("btn-view").href = siteUrl(); $("btn-view").hidden = false; $("btn-import").hidden = false; }
  // Start from the right thing: the saved Studio draft if there is one and
  // it is what the name serves; otherwise the page the name serves right now
  // (wherever it lives); otherwise the template picker.
  const { files } = await listFiles();
  const draft = files.find((f) => f.path === "_studio.json");
  const studioIndex = files.find((f) => f.path === "index.html");
  if (draft) {
    try {
      const j = await (await fetch(readUrl("_studio.json"), { cache: "no-store" })).json();
      if (j?.project) { editor.loadProjectData(j.project); dirty = false; status(`Loaded draft from ${j.saved_at ? new Date(j.saved_at).toLocaleString() : "Sia"}`, "ok"); }
      if (src && src.kind !== "studio") notice(`This draft is not what visitors see: the name currently serves ${src.label}.`);
      else if (studioIndex && j?.saved_at && studioIndex.modified && Date.parse(studioIndex.modified) > Date.parse(j.saved_at) + 60_000) notice("index.html on Sia is newer than this draft — it was published by another tool.");
    } catch (e) { status("Could not load the saved project: " + (e.message || e), "err"); $("picker").hidden = false; }
  } else if (src) {
    const ok = await importLive({ confirmIfDirty: false });
    if (ok) { dirty = false; $("btn-draft").disabled = true; if (src.kind !== "studio") notice(`Imported the page the name serves from ${src.label}. Publishing writes to ${folder} and repoints the name there.`); }
    else { $("picker").hidden = false; }
  } else {
    $("picker").hidden = false; status("New site");
  }
})();
$("btn-import").addEventListener("click", () => importLive());
$("notice-import").addEventListener("click", () => importLive());
$("notice-close").addEventListener("click", () => { $("notice").hidden = true; });

$("picker").addEventListener("click", (e) => {
  const b = e.target.closest("[data-tpl]"); if (!b) return;
  loadTemplate(b.dataset.tpl); $("picker").hidden = true; status("Template loaded — edit, then Publish");
});
$("tpl-select").addEventListener("change", (e) => {
  const v = e.target.value; e.target.value = "";
  if (!v) return;
  if (!confirm("Replace the current page with this template?")) return;
  loadTemplate(v);
});
$("btn-preview").addEventListener("click", () => {
  const w = window.open("", "_blank"); if (!w) return;
  w.document.open(); w.document.write(exportHtml()); w.document.close();
});
$("btn-draft").addEventListener("click", saveDraft);
$("btn-publish").addEventListener("click", publish);
$("pub-close").addEventListener("click", () => { $("pub").hidden = true; });