prd-html/template.html at main · natecl/prd-html · GitHub

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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>{{TITLE}} — PRD</title>
<script src="https://cdn.jsdelivr.net/npm/marked@14/marked.min.js"></script>
<style>
  :root {
    --paper: #faf8f4;
    --card: #fffdf9;
    --ink: #2b2a28;
    --muted: #7c756b;
    --line: #e7e0d4;
    --accent: #b5532f;
    --accent-soft: #f3e6df;
    --code-bg: #f4efe6;
  }
  * { box-sizing: border-box; }
  html, body { margin: 0; height: 100%; }
  body {
    background: var(--paper);
    color: var(--ink);
    font: 16px/1.65 Georgia, "Iowan Old Style", "Times New Roman", serif;
  }
  .topbar {
    display: flex; align-items: baseline; gap: 14px;
    padding: 12px 22px; border-bottom: 1px solid var(--line);
    background: var(--card); position: sticky; top: 0; z-index: 10;
  }
  .topbar .title { font-weight: 700; font-size: 18px; }
  .topbar .path { color: var(--muted); font-size: 12px; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; }
  .topbar #chat-toggle {
    margin-left: auto; font: 13px system-ui, sans-serif; cursor: pointer;
    border: 1px solid var(--line); background: var(--paper); color: var(--ink);
    padding: 5px 12px; border-radius: 6px;
  }
  .layout { display: grid; grid-template-columns: minmax(0,1fr) 380px; height: calc(100% - 49px); }
  .layout.chat-hidden { grid-template-columns: minmax(0,1fr) 0; }
  .doc { overflow-y: auto; padding: 28px 40px 120px; max-width: 860px; margin: 0 auto; width: 100%; }
  .doc h1 { font-size: 30px; line-height: 1.2; margin: 8px 0 18px; }
  .doc h2, .doc h3 { cursor: pointer; position: relative; padding-left: 20px; margin-top: 30px; }
  .doc h2 { font-size: 22px; border-bottom: 1px solid var(--line); padding-bottom: 6px; }
  .doc h3 { font-size: 18px; }
  .doc h2::before, .doc h3::before {
    content: "▾"; position: absolute; left: 0; color: var(--accent);
    font-size: 12px; top: 0.35em; transition: transform .15s;
  }
  .doc h2.collapsed::before, .doc h3.collapsed::before { transform: rotate(-90deg); }
  .doc code { background: var(--code-bg); padding: 1px 5px; border-radius: 4px; font-size: 0.88em; }
  .doc pre { background: var(--code-bg); padding: 14px 16px; border-radius: 8px; overflow-x: auto; }
  .doc pre code { background: none; padding: 0; }
  .doc blockquote { border-left: 3px solid var(--accent); margin: 0; padding: 2px 16px; color: var(--muted); }
  .doc table { border-collapse: collapse; width: 100%; font-size: 0.95em; }
  .doc th, .doc td { border: 1px solid var(--line); padding: 7px 10px; text-align: left; }
  .doc th { background: var(--accent-soft); }
  .doc a { color: var(--accent); }
  .doc ul.contains-task-list, .doc li.task-list-item { list-style: none; }
  .doc li.task-list-item { margin-left: -20px; }
  .doc input[type=checkbox] { width: 15px; height: 15px; margin-right: 8px; accent-color: var(--accent); cursor: pointer; vertical-align: -2px; }
  .mermaid {
    background: var(--card); border: 1px solid var(--line); border-radius: 10px;
    padding: 18px; margin: 18px 0; text-align: center; overflow-x: auto;
  }
  .chat {
    border-left: 1px solid var(--line); background: var(--card);
    display: flex; flex-direction: column; min-width: 0;
    font: 14px/1.5 system-ui, -apple-system, sans-serif;
  }
  .layout.chat-hidden .chat { display: none; }
  .chat-head { padding: 12px 16px; font-weight: 600; border-bottom: 1px solid var(--line); }
  .chat-log { flex: 1; overflow-y: auto; padding: 14px 16px; display: flex; flex-direction: column; gap: 12px; }
  .msg { padding: 9px 12px; border-radius: 10px; white-space: pre-wrap; word-wrap: break-word; }
  .msg.user { background: var(--accent-soft); align-self: flex-end; max-width: 88%; }
  .msg.assistant { background: var(--paper); border: 1px solid var(--line); align-self: flex-start; max-width: 95%; }
  .msg.assistant.error { background: #fbeae6; border-color: #e8b4a6; color: #8a2c12; }
  #chat-form { display: flex; flex-direction: column; gap: 8px; padding: 12px 16px; border-top: 1px solid var(--line); }
  #chat-input { resize: vertical; min-height: 56px; font: inherit; padding: 8px 10px; border: 1px solid var(--line); border-radius: 8px; background: var(--paper); color: var(--ink); }
  #chat-form button { font: inherit; cursor: pointer; background: var(--accent); color: #fff; border: none; padding: 8px; border-radius: 8px; }
  #chat-form button:disabled { opacity: .5; cursor: default; }
  .chat-status { padding: 0 16px 10px; color: var(--muted); font-size: 12px; min-height: 16px; }
  @media (max-width: 760px) {
    .layout { grid-template-columns: 1fr; grid-template-rows: 1fr auto; }
    .chat { border-left: none; border-top: 1px solid var(--line); max-height: 45vh; }
  }
</style>
</head>
<body>
<header class="topbar">
  <span class="title">{{TITLE}}</span>
  <span class="path" id="prd-path">{{PRD_PATH}}</span>
  <button id="chat-toggle">Hide chat</button>
</header>
<div class="layout" id="layout">
  <main id="doc" class="doc"></main>
  <aside class="chat" id="chat">
    <div class="chat-head">Ask about this PRD</div>
    <div class="chat-log" id="chat-log"></div>
    <form id="chat-form">
      <textarea id="chat-input" placeholder="Ask a question, or request an edit to the PRD…"></textarea>
      <button type="submit">Send</button>
    </form>
    <div class="chat-status" id="chat-status"></div>
  </aside>
</div>
<script id="prd-data" type="application/json">{{PRD_JSON}}</script>
<script type="module">
  const marked = window.marked;
  marked.setOptions({ gfm: true });

  let prdMd = JSON.parse(document.getElementById('prd-data').textContent);
  const served = location.protocol.startsWith('http');
  let mermaidLib = null;

  function renderDoc(md) {
    const doc = document.getElementById('doc');
    doc.innerHTML = marked.parse(md);
    makeCollapsible(doc);
    wireCheckboxes(doc);
    upgradeMermaid(doc);
  }

  async function upgradeMermaid(root) {
    const blocks = root.querySelectorAll('code.language-mermaid');
    if (!blocks.length) return;
    blocks.forEach((code) => {
      const div = document.createElement('div');
      div.className = 'mermaid';
      div.textContent = code.textContent;
      code.closest('pre').replaceWith(div);
    });
    try {
      if (!mermaidLib) {
        mermaidLib = (await import('https://cdn.jsdelivr.net/npm/mermaid@11/dist/mermaid.esm.min.mjs')).default;
        mermaidLib.initialize({ startOnLoad: false, theme: 'neutral' });
      }
      await mermaidLib.run({ querySelector: '.mermaid' });
    } catch (e) {
      root.querySelectorAll('.mermaid').forEach(d => { d.style.color = 'var(--muted)'; });
    }
  }

  function applyCollapsed(h, collapsed) {
    const level = +h.tagName[1];
    h.classList.toggle('collapsed', collapsed);
    let el = h.nextElementSibling;
    while (el && !(/^H[1-6]$/.test(el.tagName) && +el.tagName[1] <= level)) {
      el.style.display = collapsed ? 'none' : '';
      el = el.nextElementSibling;
    }
  }

  function makeCollapsible(root) {
    root.querySelectorAll('h2, h3').forEach((h) => {
      h.addEventListener('click', () => applyCollapsed(h, !h.classList.contains('collapsed')));
    });
  }

  // Capture/restore which sections are collapsed, keyed by heading, so an
  // edit-triggered re-render doesn't reset the reader's view.
  const headKey = (h) => h.tagName + ':' + h.textContent.trim();
  function getCollapsedKeys(root) {
    const set = new Set();
    root.querySelectorAll('h2.collapsed, h3.collapsed').forEach((h) => set.add(headKey(h)));
    return set;
  }
  function restoreCollapsed(root, keys) {
    if (!keys || !keys.size) return;
    root.querySelectorAll('h2, h3').forEach((h) => { if (keys.has(headKey(h))) applyCollapsed(h, true); });
  }

  function wireCheckboxes(root) {
    // marked@14 emits a bare <li><input type=checkbox disabled> with no classes —
    // add them so the bullet-suppression CSS applies, enable the box, and persist
    // by stable index (item text can duplicate or nest, which collides).
    root.querySelectorAll('li input[type=checkbox]').forEach((b, i) => {
      b.disabled = false;
      const li = b.closest('li');
      if (li) { li.classList.add('task-list-item'); li.parentElement?.classList.add('contains-task-list'); }
      const key = 'prd-check:' + location.pathname + ':' + i;
      if (localStorage.getItem(key) === '1') b.checked = true;
      b.addEventListener('change', () => localStorage.setItem(key, b.checked ? '1' : '0'));
    });
  }

  // Chat
  const log = document.getElementById('chat-log');
  const statusEl = document.getElementById('chat-status');
  const form = document.getElementById('chat-form');
  const input = document.getElementById('chat-input');
  const sendBtn = form.querySelector('button');

  document.getElementById('chat-toggle').addEventListener('click', () => {
    const layout = document.getElementById('layout');
    const hidden = layout.classList.toggle('chat-hidden');
    document.getElementById('chat-toggle').textContent = hidden ? 'Show chat' : 'Hide chat';
  });

  if (!served) {
    input.disabled = true; sendBtn.disabled = true;
    statusEl.textContent = 'Chat needs the local server. Run:  node ~/.claude/skills/prd-html/serve.js <this file>.html';
  }

  function addMsg(role, text) {
    const d = document.createElement('div');
    d.className = 'msg ' + role;
    d.textContent = text;
    log.appendChild(d);
    log.scrollTop = log.scrollHeight;
    return d;
  }

  form.addEventListener('submit', async (e) => {
    e.preventDefault();
    const message = input.value.trim();
    if (!message || sendBtn.disabled) return;
    input.value = '';
    addMsg('user', message);
    const pending = addMsg('assistant', '…');
    sendBtn.disabled = true;
    statusEl.textContent = 'Claude is working…';
    let acc = '';
    try {
      const res = await fetch('/chat', {
        method: 'POST',
        headers: { 'content-type': 'application/json' },
        body: JSON.stringify({ message }),
      });
      if (!res.ok) {
        let msg = 'HTTP ' + res.status;
        try { msg = (await res.json()).error || msg; } catch {}
        throw new Error(msg);
      }
      // Read the SSE stream: {delta} frames build the reply live; {done}/{error} end it.
      const reader = res.body.getReader();
      const dec = new TextDecoder();
      let sse = '', finalReply = null, errMsg = null;
      for (;;) {
        const { value, done } = await reader.read();
        if (done) break;
        sse += dec.decode(value, { stream: true });
        let i;
        while ((i = sse.indexOf('\n\n')) >= 0) {
          const frame = sse.slice(0, i); sse = sse.slice(i + 2);
          const dl = frame.split('\n').find((l) => l.startsWith('data:'));
          if (!dl) continue;
          let obj; try { obj = JSON.parse(dl.slice(5).trim()); } catch { continue; }
          if (obj.delta != null) {
            acc += obj.delta;
            pending.textContent = acc;
            log.scrollTop = log.scrollHeight;
          } else if (obj.error) {
            errMsg = obj.error;
          } else if (obj.done) {
            finalReply = obj.reply;
          }
        }
      }
      if (errMsg) throw new Error(errMsg);
      pending.textContent = acc || finalReply || '(no reply)';
      await refreshDoc();
    } catch (err) {
      pending.textContent = 'Error: ' + err.message;
      pending.classList.add('error');
    } finally {
      sendBtn.disabled = false;
      statusEl.textContent = '';
    }
  });

  async function refreshDoc() {
    if (!served) return;
    try {
      const res = await fetch('/prd.md', { cache: 'no-store' });
      if (!res.ok) return;
      const md = await res.text();
      if (md && md !== prdMd) {
        // Re-render to show the edit, but keep the reader's view: preserve which
        // sections are collapsed and the scroll position so nothing visibly resets.
        const doc = document.getElementById('doc');
        const collapsed = getCollapsedKeys(doc);
        const scroll = doc.scrollTop;
        prdMd = md;
        renderDoc(prdMd);
        restoreCollapsed(doc, collapsed);
        doc.scrollTop = scroll;
      }
    } catch {}
  }

  renderDoc(prdMd);
</script>
</body>
</html>