/* Alfred V4+V5: visual activity dock. Does not alter the existing interface. */
(() => {
  'use strict';
  const CSS = 'alfred-feature-';
  const state = { cards: [], collapsed: false, lastStatus: new Map(), receivedOnce: false };
  const el = (tag, className, text) => {
    const node = document.createElement(tag);
    if (className) node.className = CSS + className;
    if (text != null) node.textContent = String(text);
    return node;
  };
  const root = el('aside', 'dock');
  root.setAttribute('aria-label', 'Activité et informations d’Alfred');
  const header = el('header', 'header');
  const toggle = el('button', 'toggle', 'Activité Hermes');
  toggle.type = 'button';
  toggle.setAttribute('aria-expanded', 'true');
  const count = el('span', 'count', '0');
  const contents = el('section', 'contents');
  contents.setAttribute('aria-live', 'polite');
  contents.setAttribute('aria-relevant', 'additions text');
  header.append(toggle, count);
  root.append(header, contents);
  document.body.append(root);

  const toggleDock = (collapse) => {
    state.collapsed = collapse;
    root.classList.toggle(CSS + 'collapsed', collapse);
    toggle.setAttribute('aria-expanded', String(!collapse));
    toggle.textContent = collapse ? '☰ Activité Hermes' : '⌄ Activité Hermes';
  };
  toggle.addEventListener('click', () => toggleDock(!state.collapsed));

  const addText = (parent, cls, text, maxlength=1600) => {
    if (text === undefined || text === null || String(text).trim() === '') return;
    const value = String(text);
    if (value.length <= maxlength) {
      parent.append(el('p', cls, value));
      return;
    }
    const p = el('p', cls, value.slice(0, maxlength) + '…');
    const button = el('button', 'more', 'Afficher tout');
    button.type = 'button';
    let open = false;
    button.addEventListener('click', () => {
      open = !open;
      p.textContent = open ? value : value.slice(0, maxlength) + '…';
      button.textContent = open ? 'Réduire' : 'Afficher tout';
    });
    parent.append(p, button);
  };

  const safeImage = url => {
    if (typeof url !== 'string') return null;
    try {
      const parsed = new URL(url, location.origin);
      return ['http:', 'https:'].includes(parsed.protocol) ? parsed.href : null;
    } catch { return null; }
  };
  const displayExtra = (item, display) => {
    if (!display || typeof display !== 'object') return;
    const kind = display.type;
    if (kind === 'image' && display.url) {
      const src = safeImage(display.url);
      if (src) {
        const img = el('img', 'image');
        img.src = src;
        img.alt = display.title || 'Illustration Alfred';
        img.loading = 'lazy';
        item.append(img);
      }
    } else if (kind === 'weather') {
      const line = [display.temperature, display.condition || display.description].filter(Boolean).join(' · ');
      addText(item, 'weather', line, 300);
    } else if (kind === 'calendar' && Array.isArray(display.events)) {
      for (const event of display.events.slice(0, 6)) {
        addText(item, 'event', [event.start, event.title].filter(Boolean).join(' — '), 300);
      }
    }
    if (display.text && display.text !== item.dataset.body) addText(item, 'detail', display.text);
  };
  const STATUS_LABELS = {
    queued: 'En attente', running: 'En cours', succeeded: 'Terminé',
    failed: 'Erreur', interrupted: 'Interrompu'
  };

  function render() {
    contents.replaceChildren();
    count.textContent = String(state.cards.length);
    if (!state.cards.length) {
      contents.append(el('p', 'empty', 'Aucune activité pour le moment.'));
      return;
    }
    state.cards.forEach(card => {
      const item = el('article', 'card');
      item.dataset.body = card.body || '';
      const heading = el('div', 'card-header');
      const title = el('strong', 'card-title', card.title || 'Information');
      heading.append(title);
      if (card.status) {
        const status = el('span', 'status ' + (card.status || ''), STATUS_LABELS[card.status] || card.status);
        heading.append(status);
      }
      item.append(heading);
      const body = card.body || '';
      if (body && (!card.display?.text || card.display.text !== body)) addText(item, 'body', body);
      displayExtra(item, card.display);
      if (body && card.display?.text === body) addText(item, 'body', body);
      const footer = el('div', 'footer');
      if (card.updated_at) {
        const date = new Date(card.updated_at);
        footer.append(el('time', 'date', isNaN(date.getTime()) ? '' : date.toLocaleTimeString('fr-FR', {hour:'2-digit', minute:'2-digit'})));
      }
      if (card.status === 'succeeded' && body) {
        const say = el('button', 'speak', 'Lire');
        say.type = 'button';
        say.title = 'Faire lire le résultat par la voix Piper configurée';
        say.addEventListener('click', async () => {
          say.disabled = true;
          try {
            const response = await fetch('/api/tts/say', {
              method:'POST', headers:{'Content-Type':'application/json'},
              body:JSON.stringify({text:body.slice(0,1800)})
            });
            if (!response.ok) throw new Error('TTS indisponible');
          } catch (error) { say.title = String(error); }
          finally { say.disabled = false; }
        });
        footer.append(say);
      }
      item.append(footer);
      contents.append(item);
    });
  }
  let fetching = false;
  async function refresh() {
    if (fetching) return;
    fetching = true;
    try {
      const response = await fetch('/api/alfred/cards', {cache:'no-store'});
      if (!response.ok) throw new Error('Cartes indisponibles');
      const payload = await response.json();
      const cards = Array.isArray(payload.cards) ? payload.cards : [];
      const sig = JSON.stringify(cards);
      if (sig === state.signature) return;
      state.signature = sig;
      const hasNewCompletion = cards.some(card =>
        card.status === 'succeeded' && state.lastStatus.has(card.id) &&
        state.lastStatus.get(card.id) !== 'succeeded');
      const hasNewCard = cards.some(card => !state.lastStatus.has(card.id));
      state.lastStatus = new Map(cards.map(c => [c.id, c.status]));
      state.cards = cards;
      render();
      if (!state.receivedOnce) {
        state.receivedOnce = true;
        toggleDock(cards.length === 0);
      } else if (hasNewCompletion || hasNewCard) {
        toggleDock(false);
      }
    } catch (error) {
      if (!state.receivedOnce) contents.replaceChildren(el('p', 'empty', 'Connexion aux cartes indisponible.'));
    } finally { fetching = false; }
  }
  refresh();
  setInterval(refresh, 10000); // safety fallback; Socket.IO wakes immediately
  if (typeof window.io === 'function') {
    const socket = window.io();
    socket.on('alfred_cards_changed', refresh);
    socket.on('alfred_task', refresh);
    socket.on('connect', refresh);
  }
})();