/* ObsiGate — Command Palette (Ctrl+Shift+Espace / Ctrl+Alt+Espace) */
import { api } from './auth.js';
import { showToast, toggleTheme, TabManager } from './ui.js';
import { openEditor } from './utils.js';
import { state } from './state.js';
import { t } from './i18n.js';

function triggerGoHome() { const e = document.getElementById('header-logo'); if (e) e.click(); }

function getCurrentFile() {
  const id = TabManager._activeTabId;
  if (id) { const t = TabManager._tabs.find(x => x.id === id); if (t) return { vault: t.vault, path: t.path }; }
  if (state.currentVault && state.currentPath) return { vault: state.currentVault, path: state.currentPath };
  return null;
}

// ── Query parser: +word = required, -word = exclude, word = required ──
function parseQuery(raw) {
  const positive = [];
  const negative = [];
  const parts = (raw || '').split(/\s+/).filter(Boolean);
  for (const p of parts) {
    if (p.startsWith('-') && p.length > 1) negative.push(p.slice(1).toLowerCase());
    else if (p.startsWith('+')) positive.push(p.slice(1).toLowerCase());
    else positive.push(p.toLowerCase());
  }
  return { positive, negative };
}

// ── DOM / state ──
let _overlay = null, _input = null, _results = null, _mode = 'files', _sel = 0, _to = null, _items = [];
let _browse = { action: null, vault: null, path: '' };
let _browseFilterEl = null, _browseFilter = '', _allItems = [];
let _browseFilterTimer = null;  // debounce for global search

// ── Commands ──
const CMDS = [
  { id:'home',         label:'🏠 Accueil',               desc:"Retour à l'accueil",               cat:'Navigation',  act:()=>{close();triggerGoHome();} },
  { id:'edit-current', label:'✏️ Éditer fichier courant', desc:'Ouvrir le fichier actif dans l\'éditeur', cat:'Fichiers', act:()=>{close();const f=getCurrentFile();if(f)openEditor(f.vault,f.path);else showToast(t('toast.no_open_file'),'error');} },
  { id:'popout',       label:'🪟 Pop-out',               desc:'Ouvrir le document dans une fenêtre',  cat:'Fichiers',  act:()=>{close();const f=getCurrentFile();if(f)window.open(`/popout/${encodeURIComponent(f.vault)}/${encodeURIComponent(f.path)}`,'popout','width=1000,height=700');else showToast(t('toast.no_open_file'),'error');} },
  { id:'create-file',  label:'📄 Créer fichier markdown', desc:'Choisir la vault, naviguer, puis nommer le fichier', cat:'Fichiers', act:()=>startBrowse('create-file') },
  { id:'delete-file',  label:'🗑️ Supprimer fichier',      desc:'Rechercher un fichier à supprimer', cat:'Fichiers', act:()=>startBrowse('delete-file') },
  { id:'delete-cur',   label:'🗑️ Supprimer fichier courant', desc:'Supprimer le fichier de l\'onglet actif', cat:'Fichiers', act:async()=>{close();await delCurFile();} },
  { id:'close-cur',    label:'✕ Fermer fichier courant',  desc:'Fermer l\'onglet actif sans supprimer', cat:'Fichiers', act:()=>{close();const f=getCurrentFile();if(f){const tab=TabManager._tabs.find(t=>t.vault===f.vault&&t.path===f.path);if(tab)TabManager.close(tab.id);else triggerGoHome();}else{showToast(t('toast.no_open_file'),'error');}} },
  { id:'create-dir',   label:'📁 Créer répertoire',       desc:'Choisir la vault, naviguer, puis nommer le dossier', cat:'Répertoires', act:()=>startBrowse('create-dir') },
  { id:'delete-dir',   label:'🗑️ Supprimer répertoire',   desc:'Choisir la vault, naviguer et supprimer', cat:'Répertoires', act:()=>startBrowse('delete-dir') },
  { id:'theme',        label:'🌓 Changer le thème',       desc:'Basculer clair/sombre',             cat:'Actions', act:()=>{close();toggleTheme();} },
  { id:'reindex',      label:'🔄 Réindexer',              desc:'Forcer la réindexation complète',   cat:'Actions', act:async()=>{close();try{await api('/api/index/reload');showToast('Index rechargé','success');}catch{showToast(t('common.error'),'error');}} },
  { id:'help',         label:'❓ Aide',                   desc:'Ouvrir le guide',                   cat:'Système', act:()=>{close();const b=document.getElementById('help-open-btn');if(b)b.click();} },
  { id:'config',       label:'⚙️ Configuration',          desc:'Ouvrir les paramètres',             cat:'Système', act:()=>{close();const b=document.getElementById('config-open-btn');if(b)b.click();} },
];

// ── Browse: vault picker ──
function startBrowse(action) {
  _browse = { action, vault: null, path: '' };
  _browseFilter = ''; _allItems = [];
  switchMode('browse-vault');
  renderVaultPicker();
}

async function renderVaultPicker() {
  try {
    const data = await api('/api/vaults');
    const vaults = Array.isArray(data) ? data : [];
    _items = vaults.map(v => ({ type:'_vault', vault: v.name, label: (v.type==='DIR'?'📂':'🗂️')+' '+v.name, sublabel: v.file_count+' fichiers' }));
    if (_items.length === 0) {
      _items = [{ type:'_empty', label: 'Aucune vault trouvée', sublabel: '' }];
    }
    _allItems = _items;
    render();
  } catch { _items = [{ type:'_error', label: 'Erreur de chargement', sublabel: '' }]; _allItems = _items; render(); }
}

// ── Browse: directory navigation ──
async function renderBrowse() {
  const { vault, path } = _browse;
  _items = [];
  const bc = document.getElementById('cp-breadcrumb');
  if (bc) {
    bc.style.display = 'flex';
    const segs = path ? path.split('/') : [];
    let html = `<span class="cp-bc-item cp-bc-root" data-vault="1">${esc(vault)}</span>`;
    let acc = '';
    for (const s of segs) { acc = acc ? acc+'/'+s : s; html += `<span class="cp-bc-sep">/</span><span class="cp-bc-item" data-path="${esc(acc)}">${esc(s)}</span>`; }
    bc.innerHTML = html;
    bc.querySelectorAll('.cp-bc-item[data-path]').forEach(el => el.addEventListener('click', ()=>{ _browse.path=el.dataset.path; _browseFilter=''; if(_browseFilterEl)_browseFilterEl.value=''; renderBrowse(); }));
    bc.querySelector('.cp-bc-root').addEventListener('click', ()=>{ _browse.path=''; _browseFilter=''; if(_browseFilterEl)_browseFilterEl.value=''; renderBrowse(); });
  }

  try {
    const data = await api(`/api/browse/${encodeURIComponent(vault)}?path=${encodeURIComponent(path)}`);
    const items = data.items || [];
    const dirs = items.filter(i => i.type === 'directory' || i.is_dir);
    const files = items.filter(i => i.type === 'file' && !i.is_dir);

    // Action row
    const actLabel = {
      'create-file':'📄 Créer fichier ici',
      'create-dir':'📁 Créer dossier ici',
      'delete-dir':'🗑️ Supprimer ce dossier',
      'delete-file':'🗑️ Supprimer un fichier dans ce dossier',
      'open-file':'📂 Ouvrir un fichier dans ce dossier'
    };
    const isDeleteDir = _browse.action === 'delete-dir' && path;
    const isDeleteFile = _browse.action === 'delete-file';
    const isOpenFile = _browse.action === 'open-file';
    const needsName = _browse.action === 'create-file' || _browse.action === 'create-dir';

    if (isDeleteDir) {
      _items.push({ type:'_action', label: '🗑️ Supprimer '+ (path.split('/').pop()||path), sublabel: 'Tout le contenu sera supprimé', act:()=>execDelDir(path) });
    } else if (needsName) {
      _items.push({ type:'_action', label: actLabel[_browse.action]||'', sublabel: 'Dans '+(path||'racine'), act:()=>askName() });
    }

    // Parent
    if (path) {
      _items.push({ type:'_nav', label: '📂 .. (parent)', go: path.split('/').slice(0,-1).join('/') });
    }

    // Subdirs
    for (const d of dirs) {
      const fp = path ? path+'/'+d.name : d.name;
      _items.push({ type:'_nav', label: '📁 '+d.name, go: fp });
    }

    // Files
    for (const f of files) {
      const fp = path ? path+'/'+f.name : f.name;
      if (isDeleteFile) {
        _items.push({ type:'_file', label: '📄 '+f.name, sublabel: f.vault+'/'+fp, act:()=>execDelFile(fp) });
      } else if (isOpenFile) {
        _items.push({ type:'_file', label: '📄 '+f.name, sublabel: f.vault+'/'+fp, act:()=>{ close(); TabManager.openPersistent(vault, fp); } });
      } else {
        _items.push({ type:'_info', label: '📄 '+f.name, sublabel: fp });
      }
    }

    if (_items.length === 0) _items.push({ type:'_empty', label: '📂 Dossier vide', sublabel: '' });
  } catch { _items = [{ type:'_error', label: 'Erreur', sublabel: '' }]; }

  _allItems = _items;
  applyBrowseFilter();
}

// ── Browse filter: local when empty, global suggest when text ──
function applyBrowseFilter() {
  const q = _browseFilter.trim();
  if (!q) {
    // Empty filter: show local directory items
    _items = _allItems;
    render();
    return;
  }
  // Has filter text: debounce and search globally
  if (_browseFilterTimer) clearTimeout(_browseFilterTimer);
  _browseFilterTimer = setTimeout(() => searchBrowseGlobal(q), 200);
}

async function searchBrowseGlobal(rawQ) {
  const { positive, negative } = parseQuery(rawQ);
  const action = _browse.action;
  const isDeleteFile = action === 'delete-file';
  const isOpenFile = action === 'open-file';
  const isDeleteDir = action === 'delete-dir';
  const needsName = action === 'create-file' || action === 'create-dir';

  try {
    const q = positive.join(' ');
    const vault = _browse.vault || 'all';
    const d = await api(`/api/suggest?q=${encodeURIComponent(q)}&vault=${encodeURIComponent(vault)}`);
    const sug = (d.suggestions || []).filter(s => {
      const fullPath = (s.vault+'/'+s.path).toLowerCase();
      // Client-side negative filter
      for (const n of negative) {
        if (fullPath.includes(n)) return false;
      }
      return true;
    });

    if (sug.length === 0) {
      _items = [{ type:'_empty', label: 'Aucun résultat pour "'+rawQ+'"', sublabel: '' }];
      render();
      return;
    }

    _items = [];

    // Extract unique directories from result paths
    const dirSet = new Set();
    for (const s of sug) {
      const parts = s.path.split('/');
      // Build parent directories
      for (let i = 0; i < parts.length - 1; i++) {
        dirSet.add(s.vault + '|' + parts.slice(0, i + 1).join('/'));
      }
    }

    // Show directories as navigable
    const dirs = [...dirSet].map(d => {
      const [v, p] = d.split('|');
      const name = p.split('/').pop();
      return { type:'_nav', label:'📁 '+name, sublabel:v+'/'+p, go:p, vault:v };
    }).sort((a,b) => a.sublabel.localeCompare(b.sublabel));

    for (const d of dirs) _items.push(d);

    // Show files
    for (const s of sug) {
      const fp = s.path;
      const name = fp.split('/').pop();
      if (isDeleteFile) {
        _items.push({ type:'_file', label:'📄 '+name, sublabel:s.vault+'/'+fp, act:()=>execDelFileBrowsed(s.vault, fp) });
      } else if (isOpenFile) {
        _items.push({ type:'_file', label:'📄 '+name, sublabel:s.vault+'/'+fp, act:()=>{ close(); TabManager.openPersistent(s.vault, fp); } });
      } else if (isDeleteDir) {
        _items.push({ type:'_file', label:'📁 '+name, sublabel:s.vault+'/'+fp, act:()=>execDelDirBrowsed(s.vault, fp) });
      } else {
        _items.push({ type:'_file', label:'📄 '+name, sublabel:s.vault+'/'+fp, act:()=>{ close(); TabManager.openPersistent(s.vault, fp); } });
      }
    }

    render();
  } catch { _items = [{ type:'_error', label: 'Erreur de recherche', sublabel: '' }]; render(); }
}

// Navigate to a directory from global search
function execNavGlobal(vault, goPath) {
  _browse.vault = vault;
  _browse.path = goPath;
  _browseFilter = '';
  if (_browseFilterEl) _browseFilterEl.value = '';
  renderBrowse();
}

async function execDelFileBrowsed(vault, path) {
  if (!confirm(t("confirm.delete_file_named", {path: vault + "/" + path}))) return;
  try {
    const d = await api(`/api/file/${encodeURIComponent(vault)}?path=${encodeURIComponent(path)}`, { method:'DELETE' });
    if (d?.status==='ok' || d?.success) { showToast(`🗑️ ${path} supprimé`,'success'); close(); refreshSidebar(); }
    else showToast(t('common.error'),'error');
  } catch(e) { showToast('Erreur : '+(e.message||e),'error'); }
}

async function execDelDirBrowsed(vault, path) {
  if (!confirm(t("confirm.delete_dir_named", {path: path}))) return;
  try {
    const d = await api(`/api/directory/${encodeURIComponent(vault)}?path=${encodeURIComponent(path)}`, { method:'DELETE' });
    if (d?.status==='ok' || d?.success) { showToast(`🗑️ ${path} supprimé`,'success'); close(); refreshSidebar(); }
    else showToast(t('common.error'),'error');
  } catch(e) { showToast('Erreur : '+(e.message||e),'error'); }
}

function onBrowseFilterInput() {
  _browseFilter = _browseFilterEl ? _browseFilterEl.value : '';
  applyBrowseFilter();
}

function onBrowseFilterKey(e) {
  if (e.key === 'Escape') {
    e.preventDefault();
    if (_browseFilter) {
      _browseFilter = '';
      if (_browseFilterEl) _browseFilterEl.value = '';
      applyBrowseFilter();
    } else {
      close();
    }
  } else if (e.key === 'ArrowDown') {
    e.preventDefault();
    _sel = 0;
    updSel(_results.querySelectorAll('.cp-item'));
    _overlay.focus();
  } else if (e.key === 'ArrowUp') {
    e.preventDefault();
    const items = _results.querySelectorAll('.cp-item');
    _sel = Math.max(items.length - 1, 0);
    updSel(items);
    _overlay.focus();
  } else if (e.key === 'Enter') {
    e.preventDefault();
    if (_items.length > 0) exec(_sel);
  } else if (e.key === 'Backspace' && !_browseFilter && (!_browseFilterEl || !_browseFilterEl.value)) {
    e.preventDefault();
    const segs = _browse.path ? _browse.path.split('/') : [];
    if (segs.length > 0) { _browse.path = segs.slice(0, -1).join('/'); renderBrowse(); }
    else if (_browse.vault) { switchMode('browse-vault'); renderVaultPicker(); }
  }
}

// ── Name input modal ──
function askName() {
  const label = _browse.action === 'create-file' ? 'Nom du fichier' : 'Nom du dossier';
  const ext = _browse.action === 'create-file' ? '(.md ajouté si besoin)' : '';
  const existingInput = document.getElementById('cp-name-input');
  if (existingInput) { existingInput.focus(); return; }

  _input.style.display = 'none';
  const bc = document.getElementById('cp-breadcrumb');
  if (bc) bc.style.display = 'none';

  const nameDiv = document.createElement('div');
  nameDiv.id = 'cp-name-input';
  nameDiv.className = 'cp-name-input';
  nameDiv.innerHTML = `<input type="text" id="cp-name-field" class="cp-name-field" placeholder="${label} ${ext}" autocomplete="off" spellcheck="false">
    <span class="cp-name-hint">Enter confirmer · Esc annuler</span>`;
  _results.before(nameDiv);

  const field = document.getElementById('cp-name-field');
  field.focus();
  field.addEventListener('keydown', (e) => {
    if (e.key === 'Enter') {
      e.preventDefault();
      const name = field.value.trim();
      if (!name) return;
      cleanupNameInput();
      if (_browse.action === 'create-file') execCreateFile(name);
      else execCreateDir(name);
    } else if (e.key === 'Escape') {
      e.preventDefault();
      cleanupNameInput();
      _overlay.focus();
      renderBrowse();
    }
  });
}

function cleanupNameInput() {
  const el = document.getElementById('cp-name-input');
  if (el) el.remove();
  const bc = document.getElementById('cp-breadcrumb');
  if (bc) bc.style.display = 'flex';
}

// ── Execute actions ──
async function execCreateFile(name) {
  let fp = _browse.path ? _browse.path+'/'+name : name;
  if (!fp.includes('.')) fp += '.md';
  try {
    const d = await api(`/api/file/${encodeURIComponent(_browse.vault)}`, { method:'POST', headers:{'Content-Type':'application/json'}, body:JSON.stringify({path:fp, content:`# ${name.replace('.md','')}\n\n`}) });
    if (d?.status==='ok' || d?.success) { showToast(`✅ ${fp} créé`,'success'); close(); openEditor(_browse.vault, fp); }
    else showToast(t('toast.create_error'),'error');
  } catch(e) { showToast('Erreur : '+(e.message||e),'error'); }
}

async function execCreateDir(name) {
  const dp = _browse.path ? _browse.path+'/'+name : name;
  try {
    const d = await api(`/api/directory/${encodeURIComponent(_browse.vault)}`, { method:'POST', headers:{'Content-Type':'application/json'}, body:JSON.stringify({path:dp}) });
    if (d?.status==='ok' || d?.success) { showToast(`📁 ${dp} créé`,'success'); close(); refreshSidebar(); }
    else showToast(t('common.error'),'error');
  } catch(e) { showToast('Erreur : '+(e.message||e),'error'); }
}

async function execDelDir(path) {
  if (!confirm(t("confirm.delete_dir_named", {path: path}))) return;
  try {
    const d = await api(`/api/directory/${encodeURIComponent(_browse.vault)}?path=${encodeURIComponent(path)}`, { method:'DELETE' });
    if (d?.status==='ok' || d?.success) { showToast(`🗑️ ${path} supprimé`,'success'); close(); refreshSidebar(); }
    else showToast(t('common.error'),'error');
  } catch(e) { showToast('Erreur : '+(e.message||e),'error'); }
}

async function execDelFile(path) {
  if (!confirm(t("confirm.delete_file_named", {path: path}))) return;
  try {
    const d = await api(`/api/file/${encodeURIComponent(_browse.vault)}?path=${encodeURIComponent(path)}`, { method:'DELETE' });
    if (d?.status==='ok' || d?.success) { showToast(`🗑️ ${path} supprimé`,'success'); close(); refreshSidebar(); }
    else showToast(t('common.error'),'error');
  } catch(e) { showToast('Erreur : '+(e.message||e),'error'); }
}

async function delCurFile() {
  const f = getCurrentFile();
  if (!f) { showToast(t('toast.no_open_file'),'error'); return; }
  if (!confirm(t("confirm.delete_file_named", {path: f.path}))) return;
  try {
    const d = await api(`/api/file/${encodeURIComponent(f.vault)}?path=${encodeURIComponent(f.path)}`, { method:'DELETE' });
    if (d?.status==='ok' || d?.success) { showToast(`🗑️ ${f.path} supprimé`,'success');
      const tab = TabManager._tabs.find(t=>t.vault===f.vault&&t.path===f.path); if(tab) TabManager.close(tab.id); triggerGoHome(); refreshSidebar(); }
    else showToast(t('common.error'),'error');
  } catch(e) { showToast('Erreur : '+(e.message||e),'error'); }
}

function refreshSidebar() {
  import('./sidebar.js').then(m => { if (m.loadVaults) m.loadVaults(); }).catch(() => {});
}

// ── DOM ──
function createDOM() {
  if (_overlay) return;
  _overlay = document.createElement('div');
  _overlay.className = 'command-palette-overlay';
  _overlay.tabIndex = -1;
  _overlay.innerHTML = `<div class="command-palette">
    <div class="cp-header"><input type="text" class="cp-input" placeholder="Rechercher un fichier... (+inclure -exclure)" spellcheck="false" autocomplete="off"><div class="cp-breadcrumb" id="cp-breadcrumb"></div><span class="cp-hint">Ctrl+Shift+Espace</span></div>
    <input type="text" class="cp-browse-filter" id="cp-browse-filter" placeholder="Filtrer (+mot -mot) — recherche globale..." spellcheck="false" autocomplete="off" style="display:none">
    <div class="cp-results"></div>
    <div class="cp-footer"><span>↑↓ naviguer</span><span>↵ ouvrir/entrer</span><span>⌫ monter</span><span>Esc fermer</span></div></div>`;
  _input = _overlay.querySelector('.cp-input');
  _browseFilterEl = _overlay.querySelector('#cp-browse-filter');
  _results = _overlay.querySelector('.cp-results');
  _overlay.addEventListener('click', (e) => { if (e.target === _overlay) close(); });
  _input.addEventListener('keydown', onKeyDown);
  _input.addEventListener('input', onInput);
  if (_browseFilterEl) {
    _browseFilterEl.addEventListener('input', onBrowseFilterInput);
    _browseFilterEl.addEventListener('keydown', onBrowseFilterKey);
  }
  _overlay.addEventListener('keydown', onOverlayKeyDown);
  document.body.appendChild(_overlay);
}

export function open(q = '') {
  createDOM();
  _overlay.classList.add('active');
  _input.value = q;
  _mode = q.startsWith('>') ? 'commands' : 'files';
  _input.disabled = false; _input.style.display = '';
  _sel = 0; _items = []; _results.innerHTML = '';
  _input.focus();
  onInput();
}

export function close() {
  if (!_overlay) return;
  _overlay.classList.remove('active');
  if (_to) clearTimeout(_to); _to = null;
  if (_browseFilterTimer) clearTimeout(_browseFilterTimer);
  _mode = 'files';
  _browseFilter = '';
  _allItems = [];
  cleanupNameInput();
  if (_browseFilterEl) { _browseFilterEl.style.display = 'none'; _browseFilterEl.value = ''; }
  const bc = document.getElementById('cp-breadcrumb'); if (bc) bc.style.display = 'none';
  const si = document.querySelector('.search-input'); if (si) si.focus();
}

function isOpen() { return _overlay && _overlay.classList.contains('active'); }

function switchMode(m) {
  _mode = m;
  if (m === 'browse' || m === 'browse-vault') {
    _input.style.display = 'none'; _input.disabled = true;
    _overlay.focus();
    if (m === 'browse' && _browseFilterEl) {
      _browseFilterEl.style.display = '';
      _browseFilterEl.value = _browseFilter;
      _browseFilterEl.focus();
    } else if (_browseFilterEl) {
      _browseFilterEl.style.display = 'none';
    }
  } else {
    _input.style.display = ''; _input.disabled = false;
    _input.focus();
    if (_browseFilterEl) _browseFilterEl.style.display = 'none';
    const bc = document.getElementById('cp-breadcrumb'); if (bc) bc.style.display = 'none';
  }
}

function onInput() {
  if (_mode === 'browse' || _mode === 'browse-vault') return;
  const v = _input.value;
  const nm = v.startsWith('>') ? 'commands' : 'files';
  if (nm !== _mode) { _mode = nm; _input.placeholder = _mode==='commands'?'Tapez une commande...':'Rechercher un fichier... (+inclure -exclure)'; }
  if (_to) clearTimeout(_to);
  _to = setTimeout(() => { _to = null; if (_mode==='commands') searchCmd(v.slice(1).trim()); else searchFiles(v.trim()); }, 150);
}

async function searchFiles(rawQ) {
  if (!rawQ) {
    _items = [{ type:'_browse', label:'📂 Parcourir les répertoires...', sublabel:'Naviguer dans les vaults pour trouver un fichier', act:()=>startBrowse('open-file') }];
    render();
    return;
  }

  const { positive, negative } = parseQuery(rawQ);

  try {
    const q = positive.join(' ');
    const d = await api(`/api/suggest?q=${encodeURIComponent(q)}&vault=all`);
    let sug = d.suggestions || [];

    // Client-side negative filter
    if (negative.length > 0) {
      sug = sug.filter(s => {
        const fullPath = (s.vault+'/'+s.path).toLowerCase();
        for (const n of negative) {
          if (fullPath.includes(n)) return false;
        }
        return true;
      });
    }

    if (sug.length === 0) {
      _items = [{ type:'_browse', label:'📂 Parcourir les répertoires...', sublabel:'Aucun résultat — naviguer manuellement', act:()=>startBrowse('open-file') }];
    } else {
      _items = sug.map(s => ({ type:'file', vault:s.vault, path:s.path, label:s.title||s.path.split('/').pop(), sublabel:`${s.vault}/${s.path}` }));
    }
    render();
  } catch { _results.innerHTML = '<div class="cp-empty cp-error">Erreur</div>'; }
}

function searchCmd(q) {
  if (!q) { _items = CMDS.map(c => ({ type:'cmd', ...c })); render(); return; }
  const lq = q.toLowerCase();
  _items = CMDS.filter(c => c.label.toLowerCase().includes(lq)||c.desc.toLowerCase().includes(lq)||(c.cat&&c.cat.toLowerCase().includes(lq))).map(c => ({ type:'cmd', ...c }));
  render();
}

function render() {
  _sel = 0;
  if (!_items.length) { _results.innerHTML = '<div class="cp-empty">Aucun résultat</div>'; return; }
  _results.innerHTML = _items.map((it, i) => `<div class="cp-item ${i===0?'cp-selected':''}" data-idx="${i}"><div class="cp-item-label">${esc(it.label)}</div><div class="cp-item-sublabel">${esc(it.sublabel||'')}</div></div>`).join('');
  _results.querySelectorAll('.cp-item').forEach(el => {
    el.addEventListener('click', () => exec(parseInt(el.dataset.idx)));
    el.addEventListener('mouseenter', () => { document.querySelectorAll('.cp-item').forEach(e=>e.classList.remove('cp-selected')); el.classList.add('cp-selected'); _sel = parseInt(el.dataset.idx); });
  });
  scroll();
}

function onKeyDown(e) {
  const items = _results.querySelectorAll('.cp-item');
  if (_mode === 'browse' || _mode === 'browse-vault') {
    if (e.key === 'Escape') { e.preventDefault(); close(); }
    else if (e.key === 'Backspace') {
      e.preventDefault();
      if (_mode === 'browse-vault') { _mode='commands'; _input.style.display=''; _input.disabled=false; _input.focus(); searchCmd(''); return; }
      const segs = _browse.path ? _browse.path.split('/') : [];
      if (segs.length > 0) { _browse.path = segs.slice(0,-1).join('/'); renderBrowse(); }
      else if (_browse.vault) { switchMode('browse-vault'); renderVaultPicker(); }
    }
    else if (e.key === 'Enter') { e.preventDefault(); exec(_sel); }
    else if (e.key === 'ArrowDown') { e.preventDefault(); _sel = Math.min(_sel+1, _items.length-1); updSel(items); }
    else if (e.key === 'ArrowUp') { e.preventDefault(); _sel = Math.max(_sel-1, 0); updSel(items); }
    return;
  }
  if (e.key === 'Escape') { e.preventDefault(); close(); }
  else if (e.key === 'Enter') { e.preventDefault(); exec(_sel); }
  else if (e.key === 'ArrowDown') { e.preventDefault(); _sel = Math.min(_sel+1, _items.length-1); updSel(items); }
  else if (e.key === 'ArrowUp') { e.preventDefault(); _sel = Math.max(_sel-1, 0); updSel(items); }
  else if (e.key === 'Tab') { e.preventDefault(); if (_mode==='files') { _input.value='> '; setTimeout(()=>_input.setSelectionRange(2,2),0); } else _input.value=''; onInput(); }
}

function updSel(items) { items.forEach((el,i)=>el.classList.toggle('cp-selected',i===_sel)); scroll(); }
function scroll() { const s = _results.querySelector('.cp-selected'); if (s) s.scrollIntoView({block:'nearest'}); }

// ── Overlay keydown handler (for browse modes where input is hidden) ──
function onOverlayKeyDown(e) {
  if (_mode !== 'browse' && _mode !== 'browse-vault') return;
  if (document.getElementById('cp-name-input')) return;
  if (document.activeElement === _browseFilterEl) return;
  onKeyDown(e);
}

function exec(idx) {
  const it = _items[idx]; if (!it) return;
  if (it.type === 'file') {
    close();
    if (window.innerWidth <= 768) {
      TabManager.openPersistent(it.vault, it.path);
    } else {
      TabManager.openPreview(it.vault, it.path);
    }
  }
  else if (it.type === 'cmd' || it.type === '_browse') { it.act(); }
  else if (it.type === '_vault') { _browse.vault = it.vault; switchMode('browse'); renderBrowse(); }
  else if (it.type === '_nav') {
    // Check if this is a global search result with vault info
    if (it.vault && it.vault !== _browse.vault) { _browse.vault = it.vault; }
    _browse.path = it.go;
    _browseFilter='';
    if(_browseFilterEl) _browseFilterEl.value='';
    renderBrowse();
  }
  else if (it.type === '_action' || it.type === '_file') { it.act(); }
}

function esc(s) { if (!s) return ''; return String(s).replace(/&/g,'&amp;').replace(/</g,'&lt;').replace(/>/g,'&gt;').replace(/\"/g,'&quot;'); }

export function initCommandPalette() {
  document.addEventListener('keydown', (e) => {
    if ((e.ctrlKey||e.metaKey) && e.shiftKey && !e.altKey && (e.key===' '||e.code==='Space')) { e.preventDefault(); if (isOpen()) close(); else open(''); }
    if ((e.ctrlKey||e.metaKey) && e.altKey && !e.shiftKey && (e.key===' '||e.code==='Space')) { e.preventDefault(); if (isOpen()) close(); else open('> '); }
  });
}