/* Correctif visuel Dona : titre d'accueil et dégagement de la reconnaissance vocale.
   Ne touche ni à Hermes, ni à Vosk, ni aux réglages du mot d'appel. */
(() => {
  'use strict';
  const LABEL = 'RECONNAISSANCE VOCALE';
  const COMPOSER = 'Écrire une demande à';
  let pending = false;
  let lastStatus = null;
  let lastDock = null;
  let resizeObserver = null;
  const offsets = new WeakMap();

  function visible(el) {
    if (!el || el.nodeType !== 1) return false;
    const s = getComputedStyle(el);
    const r = el.getBoundingClientRect();
    return s.display !== 'none' && s.visibility !== 'hidden' &&
      r.width > 0 && r.height > 0;
  }

  function textNodes() {
    const root = document.body;
    if (!root) return [];
    const walker = document.createTreeWalker(root, NodeFilter.SHOW_TEXT, {
      acceptNode(n) {
        const p = n.parentElement;
        if (!p || /^(SCRIPT|STYLE|NOSCRIPT|TEXTAREA)$/i.test(p.tagName))
          return NodeFilter.FILTER_REJECT;
        return n.textContent.trim() ? NodeFilter.FILTER_ACCEPT : NodeFilter.FILTER_SKIP;
      }
    });
    const nodes = [];
    while (walker.nextNode()) nodes.push(walker.currentNode);
    return nodes;
  }

  function correctTitle(nodes) {
    for (const n of nodes) {
      if (n.textContent.trim() !== 'Alfred' || !visible(n.parentElement)) continue;
      const el = n.parentElement;
      const size = parseFloat(getComputedStyle(el).fontSize) || 0;
      const heading = el.closest('h1,h2,[role="heading"]');
      // Uniquement le grand titre d'accueil ; ne pas renommer les autres mentions.
      if (size >= 32 || (heading && parseFloat(getComputedStyle(heading).fontSize) >= 32)) {
        n.textContent = n.textContent.replace(/Alfred/, 'Dona');
      }
    }
  }

  function findDock(nodes) {
    // V6: the compose label is intentionally hidden; locate the compact bar by ID.
    const compact = document.querySelector('.dona-compose-compact');
    if (visible(compact)) return compact;
    const found = nodes.find(n => n.textContent.includes(COMPOSER) && visible(n.parentElement));
    if (!found) return null;
    let best = null;
    let bestScore = -Infinity;
    let el = found.parentElement;
    for (let i = 0; i < 8 && el && el !== document.body; i++, el = el.parentElement) {
      const r = el.getBoundingClientRect();
      if (!visible(el) || r.height < 45 || r.height > 265 || r.width < 250 ||
          r.top < window.innerHeight * 0.45) continue;
      const css = getComputedStyle(el);
      const fixed = /^(fixed|sticky)$/.test(css.position);
      const radius = parseFloat(css.borderTopLeftRadius) || 0;
      const score = (fixed ? 30 : 0) + (radius > 12 ? 14 : 0) +
        (r.width > window.innerWidth * 0.55 ? 10 : 0) -
        Math.abs(r.bottom - (window.innerHeight - 16)) / 12 -
        Math.abs(r.height - 85) / 10;
      if (score > bestScore) { bestScore = score; best = el; }
    }
    return best;
  }

  function findVoiceRegion(nodes, dock) {
    const found = nodes.find(n => n.textContent.includes(LABEL) && visible(n.parentElement));
    if (!found) return null;
    let el = found.parentElement;
    let candidate = el;
    for (let i = 0; i < 9 && el && el !== document.body; i++, el = el.parentElement) {
      const r = el.getBoundingClientRect();
      if (dock && el.contains(dock)) break;
      const text = (el.innerText || '').trim();
      if (r.height > 300 || text.includes('Prêt à vous aider') || text.length > 1100) break;
      // Prendre le groupe entier (statut Vosk + transcription), pas la seule étiquette.
      if (r.height >= 25 && visible(el)) candidate = el;
    }
    return candidate;
  }

  function update() {
    pending = false;
    const nodes = textNodes();
    correctTitle(nodes);
    const dock = findDock(nodes);
    const status = findVoiceRegion(nodes, dock);

    if (resizeObserver) {
      if (lastStatus && lastStatus !== status) resizeObserver.unobserve(lastStatus);
      if (lastDock && lastDock !== dock) resizeObserver.unobserve(lastDock);
      if (status && lastStatus !== status) resizeObserver.observe(status);
      if (dock && lastDock !== dock) resizeObserver.observe(dock);
    }
    lastStatus = status;
    lastDock = dock;
    if (!status) return;

    const prev = offsets.get(status) || 0;
    const rect = status.getBoundingClientRect();
    const originalBottom = rect.bottom + prev;
    const topLimit = dock ? dock.getBoundingClientRect().top - 24 : window.innerHeight - 22;
    const offset = dock ? Math.max(0, Math.ceil(originalBottom - topLimit)) : 0;
    const safeOffset = Math.min(offset, Math.max(0, rect.top + prev - 70));
    if (Math.abs(safeOffset - prev) >= 1) {
      status.style.translate = safeOffset ? `0 -${safeOffset}px` : '';
      offsets.set(status, safeOffset);
    }
  }

  function schedule() {
    if (pending) return;
    pending = true;
    requestAnimationFrame(update);
  }

  function init() {
    if ('ResizeObserver' in window) resizeObserver = new ResizeObserver(schedule);
    const observer = new MutationObserver(schedule);
    observer.observe(document.body, { subtree: true, childList: true, characterData: true });
    window.addEventListener('resize', schedule, {passive: true});
    window.addEventListener('orientationchange', schedule, {passive: true});
    if (window.visualViewport) window.visualViewport.addEventListener('resize', schedule, {passive:true});
    schedule();
  }
  if (document.readyState === 'loading') document.addEventListener('DOMContentLoaded', init, {once:true});
  else init();
})();