/* Dona Hermes CLI streaming overlay. Unobtrusive; never modifies existing cards. */
(() => {
  'use strict';
  if (typeof window.io !== 'function' || window.__donaHermesStreamV1) return;
  window.__donaHermesStreamV1 = true;

  const el = document.createElement('aside');
  el.id = 'dona-hermes-live-v1';
  el.setAttribute('aria-live', 'polite');
  el.setAttribute('aria-label', 'Progression de la réponse de Dona');
  el.hidden = true;
  const label = document.createElement('div');
  label.className = 'dona-hlive-title';
  const body = document.createElement('div');
  body.className = 'dona-hlive-text';
  el.append(label, body);
  document.body.appendChild(el);
  let activeId = null, contents = '', closeTimer = null;
  const close = (delay = 1000) => {
    clearTimeout(closeTimer);
    closeTimer = setTimeout(() => { el.hidden = true; activeId = null; }, delay);
  };
  const socket = window.io({ reconnection: true });
  socket.on('dona_hermes_stream', (event) => {
    if (!event || !event.type || !event.id) return;
    if (event.type === 'start') {
      activeId = event.id;
      contents = '';
      clearTimeout(closeTimer);
      label.textContent = 'Dona réfléchit…';
      body.textContent = '';
      el.hidden = false;
      return;
    }
    if (event.id !== activeId) return;
    if (event.type === 'first_text') {
      label.textContent = 'Dona répond…';
    } else if (event.type === 'delta') {
      // Avoid unlimited DOM growth; normal Dona cards remain the final source.
      contents = (contents + String(event.text || '')).slice(-1200);
      body.textContent = contents;
    } else if (event.type === 'tool') {
      label.textContent = 'Dona utilise un outil…';
      body.textContent = String(event.name || 'Outil en cours');
      contents = '';
    } else if (event.type === 'tool_done') {
      label.textContent = 'Dona prépare sa réponse…';
    } else if (event.type === 'end') {
      close(1100);
    } else if (event.type === 'error') {
      label.textContent = 'Traitement interrompu';
      close(2300);
    }
  });
  socket.on('disconnect', () => { el.hidden = true; activeId = null; });
})();