// ── Modal Helper ──

function _createModal(titleText, extraClasses) {
  const overlay = document.createElement('div');
  overlay.className = 'sp-overlay' + (extraClasses && extraClasses.overlay ? ' ' + extraClasses.overlay : '');

  const modal = document.createElement('div');
  modal.className = 'sp-modal' + (extraClasses && extraClasses.modal ? ' ' + extraClasses.modal : '');

  const header = document.createElement('div');
  header.className = 'sp-header';
  const title = document.createElement('span');
  title.textContent = titleText;
  const closeBtn = document.createElement('button');
  closeBtn.innerHTML = '<i class="fa fa-times"></i>';
  closeBtn.className = 'sp-close icon-btn';
  header.appendChild(title);
  header.appendChild(closeBtn);

  const body = document.createElement('div');
  body.className = 'sp-body' + (extraClasses && extraClasses.body ? ' ' + extraClasses.body : '');

  modal.appendChild(header);
  modal.appendChild(body);
  overlay.appendChild(modal);
  document.body.appendChild(overlay);

  const close = () => overlay.remove();
  closeBtn.addEventListener('click', close);
  overlay.addEventListener('click', (e) => {
    if (e.target === overlay) close();
  });
  const onKey = (e) => {
    if (e.key === 'Escape') { close(); document.removeEventListener('keydown', onKey); }
  };
  document.addEventListener('keydown', onKey);

  return { overlay, modal, body, close };
}

// ── System-Prompt Modal ──

function _renderSystemPromptBlocks(container, blocks) {
  for (var i = 0; i < blocks.length; i++) {
    var block = blocks[i];
    if (!block.content) continue;

    var wrapper = document.createElement('div');
    wrapper.className = 'sp-block';

    var label = document.createElement('div');
    label.className = 'sp-block-label';
    label.innerHTML = '<i class="fa ' + esc(block.icon || 'fa-cog') + '"></i> ' + esc(block.label || 'Block');
    wrapper.appendChild(label);

    var content = document.createElement('div');
    content.className = 'sp-block-content markdown';
    content.innerHTML = renderMarkdown(block.content);
    parseFluentEmojis(content);
    wrapper.appendChild(content);

    container.appendChild(wrapper);
  }
}

async function showSystemPromptModal(sessionId) {
  const { body } = _createModal('System-Prompt', { body: 'markdown' });
  body.innerHTML = '<div class="sp-loading">Laden...</div>';

  try {
    const blocks = await apiGetSystemPromptBlocks(sessionId, typeof _planModeActive !== 'undefined' && _planModeActive);
    body.innerHTML = '';
    _renderSystemPromptBlocks(body, blocks);
  } catch (e) {
    body.innerHTML = '<div class="sp-loading" style="color:var(--dangerous)">Fehler beim Laden des System-Prompts</div>';
  }
}

// ── Command Output Modal ──

function showCommandOutputModal(name, command, result) {
  const { body } = _createModal(name, { modal: 'cmd-output-modal' });

  const exitCode = result.exitCode != null ? result.exitCode : '?';
  const isError = exitCode !== 0;
  const statusText = result.status === 'timeout' ? 'Timeout' : `Exit ${exitCode}`;

  const meta = document.createElement('div');
  meta.className = 'cmd-output-meta';
  meta.innerHTML = `<code>${esc(command)}</code> <span class="cmd-exit-code${isError ? ' cmd-exit-error' : ''}">${esc(statusText)}</span>`;
  body.appendChild(meta);

  const output = document.createElement('pre');
  output.className = 'cmd-output-content';
  output.textContent = result.output || '(kein Output)';
  body.appendChild(output);
}

// ── Krea Image Preview Modal ──

function showKreaImageModal(titleText, fullUrl) {
  const { body } = _createModal(titleText, { overlay: 'krea-overlay', modal: 'krea-modal', body: 'krea-modal-body' });

  var img = document.createElement('img');
  img.src = fullUrl;
  img.className = 'krea-modal-image';
  img.alt = titleText;
  img.addEventListener('error', function() {
    body.innerHTML = '<div class="sp-loading" style="color:var(--dangerous)">Bild konnte nicht geladen werden</div>';
  });

  body.appendChild(img);
}

// ── Picker Modal Helper ──

function _openPickerModal(title, items, currentId, onSelect, options) {
  options = options || {};
  const noneLabel = options.noneLabel || 'Keine Auswahl';
  const noneIcon = options.noneIcon || 'fa-ban';

  const overlay = document.createElement('div');
  overlay.className = 'agent-picker-overlay';

  const modal = document.createElement('div');
  modal.className = 'agent-picker-modal';

  const header = document.createElement('div');
  header.className = 'agent-picker-header';
  header.innerHTML = `<span>${esc(title)}</span><button class="icon-btn agent-picker-close"><i class="fa fa-times"></i></button>`;
  modal.appendChild(header);

  const body = document.createElement('div');
  body.className = 'agent-picker-body';

  // "Keine" Option
  const noneCard = document.createElement('div');
  noneCard.className = 'card agent-picker-item' + (!currentId ? ' selected' : '');
  noneCard.innerHTML = `
    <div class="card-image" style="display:flex;align-items:center;justify-content:center"><i class="fa ${esc(noneIcon)}" style="font-size:2em;opacity:var(--semi-transparent)"></i></div>
    <div class="card-body">
      <div class="card-title-row">
        <span class="card-title">${esc(noneLabel)}</span>
      </div>
    </div>
  `;
  noneCard.addEventListener('click', () => {
    onSelect(null);
    overlay.remove();
  });
  body.appendChild(noneCard);

  // Items
  for (const item of items) {
    const cardEl = options.buildCard(item);
    cardEl.classList.add('agent-picker-item');
    if (item._pickerId === currentId) cardEl.classList.add('selected');
    cardEl.addEventListener('click', () => {
      onSelect(item._pickerId);
      overlay.remove();
    });
    body.appendChild(cardEl);
  }

  modal.appendChild(body);
  overlay.appendChild(modal);
  document.body.appendChild(overlay);

  header.querySelector('.agent-picker-close').addEventListener('click', () => overlay.remove());
  overlay.addEventListener('click', (e) => {
    if (e.target === overlay) overlay.remove();
  });
}

// Event-Delegation für Krea-Thumbnails im Chat
document.addEventListener('click', function(e) {
  var ref = e.target.closest('.krea-ref');
  if (ref) {
    var fullUrl = ref.dataset.fullurl;
    var filename = ref.dataset.filename;
    if (fullUrl) showKreaImageModal(filename || 'Bild', fullUrl);
  }
});