// ── Streaming Bubble ──

let _streamDiv = null;
let _streamText = '';

function startStreamBubble() {
  _streamDiv = document.createElement('div');
  _streamDiv.className = 'msg assistant markdown streamed';
  _streamDiv.innerHTML = '<p><span class="cursor"></span></p>';
  _streamText = '';
  chatEl().appendChild(_streamDiv);
  scrollDown();
}

function appendToStream(text) {
  if (!_streamDiv) startStreamBubble();
  _streamText += text;

  _streamDiv.innerHTML = renderMarkdown(_streamText);
  // Cursor ins letzte Inline/Text-Element einfügen, damit er nicht auf eine neue Zeile rutscht
  const cursor = document.createElement('span');
  cursor.className = 'cursor';
  const lastBlock = _streamDiv.lastElementChild;
  if (lastBlock) {
    lastBlock.appendChild(cursor);
  } else {
    _streamDiv.appendChild(cursor);
  }
  scrollDown();
}

function pauseStreamBubble() {
  // Cursor entfernen, aber Bubble + Text behalten (z.B. bei Web-Search-Pause)
  if (_streamDiv) {
    const cursor = _streamDiv.querySelector('.cursor');
    if (cursor) cursor.remove();
  }
}

function endStreamBubble() {
  if (_streamDiv) {
    const cursor = _streamDiv.querySelector('.cursor');
    if (cursor) cursor.remove();
    if (!_streamText.trim()) _streamDiv.remove();
    else {
      _streamDiv.innerHTML = renderMarkdown(_streamText);
      parseFluentEmojis(_streamDiv);
      wrapKreaGalleries(_streamDiv);
    }
  }
  _streamDiv = null;
  _streamText = '';
}

// ── Thinking Bubble (Nvidia Reasoning) ──

let _thinkingDiv = null;
let _thinkingText = '';

function startThinkingBubble() {
  _thinkingDiv = document.createElement('div');
  _thinkingDiv.className = 'tool-box thinking-box streamed';
  var header = document.createElement('div');
  header.className = 'tool-box-header clickable';
  header.innerHTML = '<span class="tool-name">Denkprozess</span>';
  var content = document.createElement('div');
  content.className = 'thinking-content markdown';
  content.hidden = true;
  content.innerHTML = '<p><span class="cursor"></span></p>';
  header.addEventListener('click', function() { content.hidden = !content.hidden; });
  _thinkingDiv.appendChild(header);
  _thinkingDiv.appendChild(content);
  _thinkingText = '';
  chatEl().appendChild(_thinkingDiv);
  scrollDown();
}

function appendToThinking(text) {
  if (!_thinkingDiv) startThinkingBubble();
  _thinkingText += text;
  var contentEl = _thinkingDiv.querySelector('.thinking-content');
  contentEl.innerHTML = renderMarkdown(_thinkingText);
  var cursor = document.createElement('span');
  cursor.className = 'cursor';
  var lastBlock = contentEl.lastElementChild;
  if (lastBlock) lastBlock.appendChild(cursor);
  else contentEl.appendChild(cursor);
  scrollDown();
}

function endThinkingBubble() {
  if (_thinkingDiv) {
    var cursor = _thinkingDiv.querySelector('.cursor');
    if (cursor) cursor.remove();
    var contentEl = _thinkingDiv.querySelector('.thinking-content');
    if (!_thinkingText.trim()) _thinkingDiv.remove();
    else {
      contentEl.innerHTML = renderMarkdown(_thinkingText);
      contentEl.hidden = true;
    }
  }
  _thinkingDiv = null;
  _thinkingText = '';
}

// ── Review Bubbles (Streaming) ──

let _reviewBubble = null;
let _reviewTextEl = null;
let _reviewText = '';

function addReviewBubble(type, data, agentType) {
  _reviewBubble = document.createElement('div');
  _reviewBubble.className = 'msg review-bubble streamed';
  if (agentType === 'finalizer') _reviewBubble.classList.add('finalizer-bubble');
  if (agentType === 'preparer') _reviewBubble.classList.add('preparer-bubble');
  _reviewBubble.appendChild(_createSubAgentHeader(agentType || 'review', data.agentName, data));
  _reviewTextEl = document.createElement('div');
  _reviewTextEl.className = 'review-content markdown';
  _reviewBubble.appendChild(_reviewTextEl);
  _reviewText = '';
  chatEl().appendChild(_reviewBubble);
  scrollDown();
}

function appendToReviewText(text) {
  if (!_reviewBubble) return;
  _reviewText += text;
  _reviewTextEl.innerHTML = renderMarkdown(_reviewText);
  scrollDown();
}

let _currentReviewToolBox = null;

function addReviewToolUse(data) {
  if (!_reviewBubble) return;
  if (!isToolVisible(data.toolName)) {
    _currentReviewToolBox = null;
    return;
  }
  var toolDiv = document.createElement('div');
  toolDiv.className = 'tool-box review-tool-box streamed';
  toolDiv.dataset.toolName = data.toolName;
  var displayName = TOOL_DISPLAY_NAMES[data.toolName] || data.toolName;
  toolDiv.innerHTML = '<span class="tool-name">' + esc(displayName) + '</span> <span class="tool-spinner"><i class="fa fa-hourglass-half"></i></span>';
  _reviewBubble.appendChild(toolDiv);
  _currentReviewToolBox = toolDiv;
  scrollDown();
}

function finishReviewToolBox(data) {
  if (_currentReviewToolBox) {
    renderToolBoxContent(_currentReviewToolBox, data.toolName, data.input, data.result, data.isError, data.sources);
    _currentReviewToolBox = null;
    scrollDown();
  }
}

function finalizeReviewBubble(type, data, agentType) {
  if (!_reviewBubble) return;
  const status = document.createElement('div');
  status.className = 'review-status';
  if (agentType === 'preparer' && type === 'forwarded') {
    status.className += ' review-approved';
    status.innerHTML = '<i class="fa fa-arrow-right"></i> Weitergeleitet an Session-Agent';
  } else if (agentType === 'preparer' && type === 'query') {
    status.className += ' review-rejected';
    status.innerHTML = '<i class="fa fa-question-circle"></i> Rückfrage an User';
  } else if (agentType === 'finalizer' || type === 'done') {
    status.className += ' review-approved';
    status.innerHTML = '<i class="fa fa-flag-checkered"></i> Abgeschlossen';
  } else if (type === 'approved') {
    status.className += ' review-approved';
    status.innerHTML = '<i class="fa fa-check"></i> Approved';
  } else {
    status.className += ' review-rejected';
    status.innerHTML = '<i class="fa fa-repeat"></i> Feedback – Worker korrigiert...';
  }
  _reviewBubble.appendChild(status);
  _reviewBubble = null;
  _reviewTextEl = null;
  _reviewText = '';
  _currentReviewToolBox = null;
  scrollDown();
}