#!/usr/bin/env python3
"""
restore-chat-js-with-preview.py - Re-inline the chat-widget JS into
styles.el's page_close() so that extract-js.py picks up the freshly modified
source on the next build (instead of carrying the obfuscated old asset
forward forever).

What this writes:
  - The original chat-widget IIFE (from commit 640813e^), modified to
    capture bubble.innerHTML on Share-click and open a preview modal
    instead of POSTing to /api/share immediately.
  - Modal HTML (#neuron-share-preview-modal) inserted right before the
    chat-widget script.
  - The /api/share POST in publishSharePreview() sends both answer (legacy
    plaintext), answer_html (rendered, sanitized server-side), and
    answer_plaintext (og:desc).

Idempotent. Re-run is a no-op once the inline block is present.
"""

from __future__ import annotations

import re
from pathlib import Path

REPO_ROOT = Path(__file__).resolve().parent.parent
STYLES_EL = REPO_ROOT / "src" / "styles.el"

MARKER = "neuron-share-preview-modal"

# El strings use \" for embedded ". Newlines stay literal. Backticks fine.
# We assemble the inline JS as a single literal: opening <script> ... </script>.
# Every double-quote inside must become \\" in the El source. We write it as a
# raw string and use string substitution at the end.

CHAT_HTML_AND_JS = r"""
<!-- Share preview modal: shown after the user clicks Share on an AI bubble.
     Renders the share-card layout in an iframe (via srcdoc) so the visitor
     sees exactly what the public card will look like before publishing. -->
<div id=\"neuron-share-preview-modal\" style=\"display:none;position:fixed;inset:0;z-index:200000;background:rgba(13,13,20,.55);align-items:center;justify-content:center;padding:1.5rem;font-family:'IBM Plex Sans',system-ui,sans-serif\">
  <div style=\"background:#fff;width:100%;max-width:640px;max-height:90vh;display:flex;flex-direction:column;border-radius:12px;box-shadow:0 24px 80px rgba(0,0,0,.35);overflow:hidden\">
    <div style=\"display:flex;align-items:center;justify-content:space-between;padding:1rem 1.25rem;border-bottom:1px solid rgba(0,0,0,.08)\">
      <div>
        <div style=\"font-size:.65rem;font-weight:600;letter-spacing:.14em;text-transform:uppercase;color:#6B6B7E\">Preview</div>
        <div style=\"font-size:1rem;font-weight:500;color:#0D0D14;margin-top:.15rem\">This is what you are about to publish</div>
      </div>
      <button type=\"button\" id=\"neuron-share-preview-close\" aria-label=\"Close\" style=\"background:none;border:none;cursor:pointer;color:#6B6B7E;padding:.25rem;line-height:1;font-size:1.5rem\">&times;</button>
    </div>
    <iframe id=\"neuron-share-preview-frame\" style=\"flex:1;width:100%;min-height:420px;border:0;background:#FAFAF8\" sandbox=\"allow-same-origin\"></iframe>
    <div style=\"display:flex;align-items:center;justify-content:flex-end;gap:.6rem;padding:.85rem 1.25rem;border-top:1px solid rgba(0,0,0,.08);background:#FAFAF8\">
      <button type=\"button\" id=\"neuron-share-preview-cancel\" style=\"background:#fff;border:1px solid rgba(0,0,0,.18);color:#3A3A4A;cursor:pointer;padding:.55rem 1rem;font:inherit;font-size:.8rem;font-weight:500;border-radius:6px\">Cancel</button>
      <button type=\"button\" id=\"neuron-share-preview-publish\" style=\"background:#0052A0;border:1px solid #0052A0;color:#fff;cursor:pointer;padding:.55rem 1.1rem;font:inherit;font-size:.8rem;font-weight:600;letter-spacing:.04em;border-radius:6px\">Publish to gallery</button>
    </div>
  </div>
</div>

<script>
(function() {
  if (typeof marked !== 'undefined') { marked.setOptions({ breaks: true, gfm: true }); }
  var TURNSTILE_SITE_KEY = '0x4AAAAAADHAZXyuRb3yD9mr';
  var turnstileToken = '';
  var turnstileWidgetId = null;
  var turnstileVerified = false;
  var isOpen = false;
  var MAX = 10;

  // ── Share preview modal helpers ──────────────────────────────────────────
  // Captures the rendered (marked.js) HTML from the AI bubble and shows a
  // preview before publishing. The actual /api/share POST + gallery insert
  // only fires when the user clicks Publish in the modal.
  var SHARE_CARD_CSS = \"*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}body{font-family:'IBM Plex Sans',system-ui,sans-serif;background:#FAFAF8;color:#0D0D14;padding:1.25rem .75rem;min-height:100vh}.chat-frame{background:#fff;border:1px solid rgba(0,0,0,.09);box-shadow:0 4px 32px rgba(0,0,0,.07),0 1px 4px rgba(0,0,0,.04);padding:1.25rem;display:flex;flex-direction:column;gap:1rem;max-width:560px;margin:0 auto}.chat-row-user{display:flex;flex-direction:row-reverse}.chat-row-ai{display:flex;flex-direction:row;align-items:flex-end;gap:.625rem}.bubble-user{background:#0052A0;color:#fff;border-radius:18px 18px 4px 18px;padding:11px 15px;max-width:78%;font-size:.875rem;line-height:1.55;word-break:break-word}.bubble-ai{background:#FAFAF8;color:#0D0D14;border:1px solid rgba(0,0,0,.07);border-radius:18px 18px 18px 4px;padding:11px 15px;max-width:88%;font-size:.875rem;font-weight:300;line-height:1.65;word-break:break-word;box-shadow:0 2px 6px rgba(0,0,0,.05)}.bubble-ai p{margin:0}.bubble-ai p+p{margin-top:.6rem}.bubble-ai ul,.bubble-ai ol{margin:.5rem 0 .5rem 1.25rem;padding:0}.bubble-ai li+li{margin-top:.25rem}.bubble-ai strong{font-weight:600}.bubble-ai em{font-style:italic}.bubble-ai code{font-family:'IBM Plex Mono','Menlo',monospace;font-size:.8rem;background:rgba(0,0,0,.05);padding:1px 4px;border-radius:3px}.bubble-ai pre{background:rgba(0,0,0,.05);padding:.75rem;border-radius:6px;overflow-x:auto;font-size:.8rem;margin:.5rem 0}.bubble-ai pre code{background:none;padding:0}.bubble-ai blockquote{border-left:3px solid rgba(0,82,160,.3);margin:.5rem 0;padding:.25rem 0 .25rem .75rem;color:#3A3A4A}.bubble-ai h1,.bubble-ai h2,.bubble-ai h3,.bubble-ai h4{font-weight:600;margin:.5rem 0 .25rem}.bubble-ai h1{font-size:1.05rem}.bubble-ai h2{font-size:1rem}.bubble-ai h3{font-size:.95rem}.bubble-ai h4{font-size:.9rem}.bubble-ai a{color:#0052A0;text-decoration:underline}.ai-col{display:flex;flex-direction:column;gap:.25rem}.ai-label{font-size:.6rem;font-weight:600;letter-spacing:.14em;text-transform:uppercase;color:#0052A0}.avatar{width:26px;height:26px;border-radius:50%;flex-shrink:0;background:#fff;border:1px solid rgba(0,82,160,.15);display:flex;align-items:center;justify-content:center;font-size:.7rem;color:#0052A0;font-weight:600}\";
  function _esc(s) { return String(s == null ? '' : s).replace(/&/g, '&amp;').replace(/</g, '&lt;').replace(/>/g, '&gt;').replace(/\"/g, '&quot;'); }
  function _buildPreviewSrcdoc(question, answerHtml) {
    return '<!DOCTYPE html><html><head><meta charset=\"UTF-8\"><meta name=\"viewport\" content=\"width=device-width,initial-scale=1\"><style>' + SHARE_CARD_CSS + '</style></head><body><div class=\"chat-frame\"><div class=\"chat-row-user\"><div class=\"bubble-user\">' + _esc(question || '(no prior question)') + '</div></div><div class=\"chat-row-ai\"><div class=\"avatar\">N</div><div class=\"ai-col\"><span class=\"ai-label\">Neuron</span><div class=\"bubble-ai\">' + (answerHtml || '') + '</div></div></div></div></body></html>';
  }
  var _sharePending = null;
  function openSharePreview(question, answerHtml, answerPlain, originBtn) {
    _sharePending = { question: question, answerHtml: answerHtml, answerPlain: answerPlain, btn: originBtn };
    var modal = document.getElementById('neuron-share-preview-modal');
    var frame = document.getElementById('neuron-share-preview-frame');
    if (!modal || !frame) return;
    frame.srcdoc = _buildPreviewSrcdoc(question, answerHtml);
    modal.style.display = 'flex';
  }
  function closeSharePreview() {
    var modal = document.getElementById('neuron-share-preview-modal');
    if (modal) modal.style.display = 'none';
    var frame = document.getElementById('neuron-share-preview-frame');
    if (frame) frame.srcdoc = '';
    _sharePending = null;
  }
  async function publishSharePreview() {
    if (!_sharePending) return;
    var pending = _sharePending;
    var publishBtn = document.getElementById('neuron-share-preview-publish');
    if (publishBtn) { publishBtn.disabled = true; publishBtn.textContent = 'Publishing...'; }
    if (pending.btn) pending.btn.style.opacity = '0.4';
    try {
      var r = await fetch('/api/share', {
        method: 'POST',
        headers: {'Content-Type': 'application/json'},
        body: JSON.stringify({
          question: pending.question,
          answer: pending.answerPlain,
          answer_html: pending.answerHtml,
          answer_plaintext: pending.answerPlain
        })
      });
      var d = await r.json();
      if (d && d.id) {
        window.open('/share/' + d.id, '_blank');
      }
    } catch(e) {}
    if (pending.btn) pending.btn.style.opacity = '1';
    if (publishBtn) { publishBtn.disabled = false; publishBtn.textContent = 'Publish to gallery'; }
    closeSharePreview();
  }
  // Wire modal buttons once DOM is ready. The modal lives outside the chat
  // panel so it works whether the panel is open or closed.
  function _wireShareModal() {
    var pubBtn = document.getElementById('neuron-share-preview-publish');
    var cnlBtn = document.getElementById('neuron-share-preview-cancel');
    var clsBtn = document.getElementById('neuron-share-preview-close');
    var modal  = document.getElementById('neuron-share-preview-modal');
    if (pubBtn) pubBtn.addEventListener('click', publishSharePreview);
    if (cnlBtn) cnlBtn.addEventListener('click', closeSharePreview);
    if (clsBtn) clsBtn.addEventListener('click', closeSharePreview);
    if (modal)  modal.addEventListener('click', function(ev) { if (ev.target === modal) closeSharePreview(); });
  }
  if (document.readyState === 'loading') document.addEventListener('DOMContentLoaded', _wireShareModal);
  else _wireShareModal();

  // Persistent session storage - survives page refreshes
  function loadSession() {
    try {
      var s = localStorage.getItem('neuron_demo_session');
      return s ? JSON.parse(s) : { messages: [], count: 0, context: '' };
    } catch(e) { return { messages: [], count: 0, context: '' }; }
  }
  function saveSession(session) {
    try { localStorage.setItem('neuron_demo_session', JSON.stringify(session)); } catch(e) {}
  }
  function clearSession() {
    try { localStorage.removeItem('neuron_demo_session'); } catch(e) {}
  }

  function _mg(s) { return s._m || { nodes: [], edges: [] }; }

  function _um(s, nn, ne) {
    if (!nn || !nn.length) return;
    var g = _mg(s), nm = {}, ek = function(e) { return e.from+'->'+e.to; }, em = {};
    g.nodes.forEach(function(n) { nm[n.id] = n; });
    (nn || []).forEach(function(n) {
      if (nm[n.id]) { nm[n.id].w = Math.min(1.0, (nm[n.id].w || 0.5) + 0.08); }
      else { nm[n.id] = n; }
    });
    g.nodes = Object.values(nm);
    g.edges.forEach(function(e) { em[ek(e)] = e; });
    (ne || []).forEach(function(e) {
      var k = ek(e);
      if (em[k]) { em[k].weight = Math.min(1.0, (em[k].weight || 0.5) + 0.05); }
      else { em[k] = e; }
    });
    g.edges = Object.values(em);
    s._m = g; saveSession(s);
  }

  function _ra(g, q) {
    if (!g || !g.nodes || !g.nodes.length) return [];
    var words = q.toLowerCase().split(/\s+/).filter(function(w) { return w.length > 3; });
    var sc = {};
    g.nodes.forEach(function(n) {
      var t = (n.content || '').toLowerCase();
      sc[n.id] = words.filter(function(w) { return t.indexOf(w) !== -1; }).length * 0.6 + (n.w || 0.5) * 0.4;
    });
    (g.edges || []).forEach(function(e) {
      if (sc[e.from] > 0.1) sc[e.to] = (sc[e.to] || 0) + sc[e.from] * (e.weight || 0.5) * 0.4;
    });
    return g.nodes.filter(function(n) { return sc[n.id] > 0.2; })
      .sort(function(a,b) { return sc[b.id]-sc[a.id]; }).slice(0,5)
      .map(function(n) { return { id: n.id, content: n.content, score: sc[n.id] }; });
  }

  // ?reset=1 clears the session and reloads clean
  if (window.location.search.indexOf('reset=1') !== -1) {
    clearSession();
    var clean = window.location.pathname;
    window.history.replaceState({}, '', clean);
  }

  var session = loadSession();
  // Ensure every user has a stable unique session ID.
  if (!session.uid) {
    session.uid = 'u' + Date.now().toString(36) + Math.random().toString(36).slice(2, 7);
    saveSession(session);
  }
  var msgCount = session.count || 0;

  function updateCountdown() {
    var el = document.getElementById('neuron-demo-countdown');
    if (!el) return;
    var remaining = MAX - msgCount;
    el.textContent = remaining + ' question' + (remaining === 1 ? '' : 's') + ' left';
    el.style.color = '#ffffff';
    el.style.fontWeight = '700';
  }

  window.neuronDemoReset = function() {
    try { localStorage.removeItem('neuron_demo_session'); } catch(e) {}
    session = { messages: [], count: 0, context: '' };
    msgCount = 0;
    var msgs = document.getElementById('neuron-demo-messages');
    if (msgs) msgs.innerHTML = '';
    var input = document.getElementById('neuron-demo-text');
    if (input) { input.disabled = false; input.placeholder = 'Ask me anything...'; }
    var btn = document.getElementById('neuron-demo-send');
    if (btn) btn.disabled = false;
    addMsg('ai', 'Hey. What is on your mind?', true);
  };

  window.neuronDemoToggle = function() {
    isOpen = !isOpen;
    var panel = document.getElementById('neuron-demo-panel');
    if (panel) panel.style.display = isOpen ? 'flex' : 'none';
    var btn = document.getElementById('neuron-demo-btn');
    if (btn) btn.style.display = isOpen ? 'none' : '';
    var msgs = document.getElementById('neuron-demo-messages');
    if (isOpen && turnstileVerified && msgs && msgs.style.display !== 'none' && msgs.children.length === 0) {
      if (session.messages && session.messages.length > 0) {
        session.messages.forEach(function(m) { addMsg(m.role, m.text, true); });
        var remaining = MAX - msgCount;
        if (remaining <= 0) {
          var input = document.getElementById('neuron-demo-text');
          if (input) { input.disabled = true; input.placeholder = 'Interaction limit reached'; }
        }
      } else if (!session.greeted) {
        addMsg('ai', 'Hey. What is on your mind?', true);
        session.greeted = true;
        try { localStorage.setItem('neuron_demo_session', JSON.stringify(session)); } catch(e) {}
      }
    }
    var input = document.getElementById('neuron-demo-text');
    if (isOpen && input && !input.disabled) input.focus();
    updateCountdown();
    if (isOpen && !turnstileWidgetId && typeof turnstile !== 'undefined') {
      var container = document.getElementById('neuron-demo-turnstile');
      if (container) {
        turnstileWidgetId = turnstile.render(container, {
          sitekey: TURNSTILE_SITE_KEY,
          size: 'compact',
          callback: function(token) {
            turnstileToken = token;
            turnstileVerified = true;
            if (typeof turnstile !== 'undefined' && turnstileWidgetId !== null) {
              try { turnstile.remove(turnstileWidgetId); } catch(e) {}
              turnstileWidgetId = null;
            }
            var gate = document.getElementById('neuron-demo-gate');
            var msgs = document.getElementById('neuron-demo-messages');
            var inputRow = document.getElementById('neuron-demo-input-row');
            if (gate) gate.style.display = 'none';
            if (msgs) msgs.style.display = 'flex';
            if (inputRow) inputRow.style.display = 'flex';
            if (session.messages && session.messages.length > 0) {
              session.messages.forEach(function(m) { addMsg(m.role, m.text, true); });
              var remaining = MAX - msgCount;
              if (remaining <= 0) {
                var input = document.getElementById('neuron-demo-text');
                if (input) { input.disabled = true; input.placeholder = 'Interaction limit reached'; }
              }
            } else if (!session.greeted) {
              addMsg('ai', 'Hey. What is on your mind?', true);
              session.greeted = true;
              try { localStorage.setItem('neuron_demo_session', JSON.stringify(session)); } catch(e) {}
            }
            updateCountdown();
            var inp = document.getElementById('neuron-demo-text');
            if (inp) inp.focus();
          },
          'expired-callback': function() {
            turnstileToken = '';
            turnstileVerified = false;
          }
        });
      }
    }
  };

  function addMsg(role, text, skipSave) {
    var msgs = document.getElementById('neuron-demo-messages');
    if (!msgs) return null;
    var el = document.createElement('div');
    el.className = 'demo-msg demo-msg-' + role;
    var avatar = document.createElement('div');
    avatar.className = 'demo-msg-avatar';
    if (role === 'ai') {
      var img = document.createElement('img');
      img.src = '/assets/brand/neuron-brain.png';
      img.alt = 'Neuron';
      avatar.appendChild(img);
    } else {
      var svgNS = 'http://www.w3.org/2000/svg';
      var svg = document.createElementNS(svgNS, 'svg');
      svg.setAttribute('width', '14'); svg.setAttribute('height', '14');
      svg.setAttribute('viewBox', '0 0 24 24'); svg.setAttribute('fill', 'none');
      svg.setAttribute('stroke', 'currentColor'); svg.setAttribute('stroke-width', '2');
      var p1 = document.createElementNS(svgNS, 'path');
      p1.setAttribute('d', 'M20 21v-2a4 4 0 0 0-4-4H8a4 4 0 0 0-4 4v2');
      var c1 = document.createElementNS(svgNS, 'circle');
      c1.setAttribute('cx', '12'); c1.setAttribute('cy', '7'); c1.setAttribute('r', '4');
      svg.appendChild(p1); svg.appendChild(c1);
      avatar.appendChild(svg);
    }
    var bubble = document.createElement('div');
    bubble.className = 'demo-msg-bubble';
    if (role === 'ai' && typeof marked !== 'undefined') {
      try { bubble.innerHTML = marked.parse(text); } catch(e) { bubble.textContent = text; }
    } else {
      bubble.textContent = text;
    }
    if (role === 'ai') {
      var bodyWrap = document.createElement('div');
      bodyWrap.className = 'demo-msg-ai-body';
      bodyWrap.appendChild(bubble);
      if (!skipSave) {
        var shareBtn = document.createElement('button');
        shareBtn.className = 'demo-share-pill';
        shareBtn.title = 'Share this response';
        shareBtn.textContent = 'Share ↗';
        // Capture rendered HTML on click; preview before publish.
        shareBtn.onclick = function() {
          var prevUser = '';
          if (session.messages) {
            for (var i = session.messages.length - 1; i >= 0; i--) {
              if (session.messages[i].role === 'user') { prevUser = session.messages[i].text; break; }
            }
          }
          var answerHtml = bubble.innerHTML;
          var answerPlain = text;
          openSharePreview(prevUser, answerHtml, answerPlain, shareBtn);
        };
        bodyWrap.appendChild(shareBtn);
      }
      el.appendChild(avatar);
      el.appendChild(bodyWrap);
    } else {
      el.appendChild(avatar);
      el.appendChild(bubble);
    }
    msgs.appendChild(el);
    msgs.scrollTop = msgs.scrollHeight;
    if (!skipSave && role !== 'thinking') {
      session.messages = session.messages || [];
      session.messages.push({ role: role, text: text });
      if (session.messages.length > 200) session.messages = session.messages.slice(-200);
      saveSession(session);
    }
    return el;
  }

  window.neuronDemoSend = async function() {
    if (msgCount >= MAX) return;
    var input = document.getElementById('neuron-demo-text');
    var btn = document.getElementById('neuron-demo-send');
    if (!input || btn.disabled) return;
    var msg = input.value.trim();
    if (!msg) return;
    input.value = '';
    btn.disabled = true;
    addMsg('user', msg);
    var thinking = document.createElement('div');
    thinking.className = 'demo-msg demo-msg-thinking';
    var thAvatar = document.createElement('div');
    thAvatar.className = 'demo-msg-avatar';
    var thImg = document.createElement('img');
    thImg.src = '/assets/brand/neuron-brain.png';
    thImg.alt = 'Neuron';
    thAvatar.appendChild(thImg);
    thinking.appendChild(thAvatar);
    var thDots = document.createElement('span');
    thDots.className = 'demo-msg-thinking-dots';
    thDots.innerHTML = '<span></span><span></span><span></span>';
    thinking.appendChild(thDots);
    var thMsgsEl = document.getElementById('neuron-demo-messages');
    if (thMsgsEl) {
      thMsgsEl.appendChild(thinking);
      thMsgsEl.scrollTop = thMsgsEl.scrollHeight;
    }
    if (turnstileVerified && !session._cfSent) { session._cfSent = true; }
    try {
      var hist = (session.messages || []).slice(-50).filter(function(m){ return m.role !== 'thinking'; }).map(function(m){
        return {role: m.role === 'ai' ? 'assistant' : 'user', content: m.text};
      });
      var activated_nodes = _ra(session._m, msg);
      var questionsRemaining = (MAX - msgCount) - 1;
      if (questionsRemaining < 0) questionsRemaining = 0;
      // 30s frontend timeout — surfaces a real error if the soul hangs
      // instead of leaving the thinking bubble spinning forever.
      var ctrl = new AbortController();
      var timeoutId = setTimeout(function() { ctrl.abort(); }, 30000);
      var r;
      try {
        r = await fetch('/api/demo', {
          method: 'POST',
          headers: {'Content-Type': 'application/json'},
          signal: ctrl.signal,
          body: JSON.stringify({
            message: msg,
            history: hist,
            cf_token: turnstileVerified && !session._cfSent ? turnstileToken : '',
            uid: session.uid || '',
            activated_nodes: activated_nodes,
            engram_node_count: (session._m && session._m.nodes) ? session._m.nodes.length : 0,
            questions_remaining: questionsRemaining,
            is_last_question: questionsRemaining === 0
          })
        });
      } finally {
        clearTimeout(timeoutId);
      }
      var d = await r.json();
      if (thinking) thinking.remove();
      _um(session, d.sn, d.se);
      var reply = d.response || d.reply || d.message || '';
      var isError = !reply || reply === 'Stepped out for a moment. Try again.';
      if (!isError) {
        msgCount++;
        session.count = msgCount;
        saveSession(session);
        updateCountdown();
        if (msgCount >= MAX && input) {
          input.disabled = true;
          input.placeholder = 'Interaction limit reached';
        }
      }
      addMsg('ai', reply || 'Stepped out for a moment. Try again.');
    } catch(e) {
      if (thinking) thinking.remove();
      var msg = (e && e.name === 'AbortError')
        ? 'Took too long to respond — try again.'
        : 'Stepped out for a moment. Try again.';
      addMsg('ai', msg);
    }
    if (msgCount < MAX && btn) btn.disabled = false;
    if (input) input.focus();
  };

  var inp = document.getElementById('neuron-demo-text');
  if (inp) {
    inp.addEventListener('keydown', function(e) {
      if (e.key === 'Enter' && !e.shiftKey) { e.preventDefault(); window.neuronDemoSend(); }
    });
  }
})();
</script>
"""

# Replace the line `<script src=\"/assets/js/fc247ef45b1d.js\" defer></script>`
# with our new inline content + script. extract-js will then re-extract this
# fresh inline block to a content-hashed asset on the next build.

OLD_LINE = '<script src=\\"/assets/js/de72b8b61d75.js\\" defer></script>'


def main():
    src = STYLES_EL.read_text(encoding="utf-8")
    # If the anchor `<script src=...de72b8b61d75.js...>` is still present, the
    # asset extraction took the inline source out — so the chat JS in this
    # file is the source-of-truth and we re-inject it. We fall through the
    # MARKER check in that case, replacing both the modal HTML and the
    # script-tag in one shot.
    has_anchor = OLD_LINE in src
    if MARKER in src and not has_anchor:
        # Modal is inline AND asset has been re-extracted to a fresh hash.
        # Re-running here would clobber the new hash. Bail.
        print("styles.el already inlined and re-extracted - skipping")
        return
    if MARKER in src and has_anchor:
        # Modal HTML is there but the chat JS is still in the obfuscated
        # asset. Replace the entire modal+script block so extract-js picks
        # up the fresh source on the next build.
        import re
        # Match from the modal comment opener to (and including) the OLD_LINE.
        pattern = re.compile(
            r"<!--\s*Share preview modal:.*?" + re.escape(OLD_LINE),
            re.DOTALL,
        )
        if not pattern.search(src):
            print("ERROR: modal block + anchor pair not found in styles.el")
            raise SystemExit(1)
        # Use a lambda so re.sub doesn't parse the replacement as a template
        # (the chat HTML/JS contains `\s`, `\d`, etc. which would be treated
        # as backreferences in a normal replacement string).
        replacement = CHAT_HTML_AND_JS.strip()
        new_src = pattern.sub(lambda _m: replacement, src, count=1)
        STYLES_EL.write_text(new_src, encoding="utf-8")
        print("styles.el patched: replaced existing modal+anchor with fresh chat-widget JS")
        return
    if not has_anchor:
        # No marker, no anchor — file is in an unexpected state. Fail loud.
        print(f"ERROR: anchor `{OLD_LINE}` not found in styles.el")
        print("       Either it was renamed in a prior commit, or the file is already patched.")
        raise SystemExit(1)
    new_src = src.replace(OLD_LINE, CHAT_HTML_AND_JS.strip(), 1)
    STYLES_EL.write_text(new_src, encoding="utf-8")
    print("styles.el patched: chat-widget JS re-inlined with share preview modal")


if __name__ == "__main__":
    main()