'use strict';
// If the server says the passkey session is gone, go back to the sign-in page.
const _fetch = window.fetch.bind(window);
window.fetch = async (...a) => {
  const r = await _fetch(...a);
  if (r.status === 401 && r.headers.get('x-hub-auth') === 'required') location.replace('/login');
  return r;
};
const $ = s => document.querySelector(s);
const esc = s => String(s).replace(/[&<>"']/g, c => ({ '&': '&amp;', '<': '&lt;', '>': '&gt;', '"': '&quot;', "'": '&#39;' }[c]));
// Preferences are kept in the browser for speed AND saved on the server, so they survive cleared browser data, a different
// device, or the separate storage of the iOS home-screen app. Only the music queue stays local.
const SYNCED = new Set(['ab_creds', 'sf_token', 'plex_lib', 'office_loc', 'cal_default', 'cal_view', 'cal_range', 'task_list', 'task_show_done', 'recents', 'links']);
const outbox = new Map(); let outTimer = null, warned = false;
function flushSettings() {
  outTimer = null;
  for (const [key, value] of [...outbox]) {
    outbox.delete(key);
    fetch('/api/settings', { method: 'PUT', keepalive: true, headers: { 'Content-Type': 'application/json' }, body: JSON.stringify({ key, value }) })
      .then(r => { if (!r.ok) throw new Error('save failed'); })
      .catch(() => { if (!warned) { warned = true; toast('Could not save your settings to the server. They are kept on this device for now.'); } });
  }
}
const queueSetting = (k, v) => { if (!SYNCED.has(k)) return; outbox.set(k, v); clearTimeout(outTimer); outTimer = setTimeout(flushSettings, 400); };
addEventListener('pagehide', () => { if (outbox.size) flushSettings(); });
// Several people can use the same browser, so everything kept in the browser is filed under the signed-in person.
let ME = null;
const nk = k => (ME ? ME.id + ':' + k : k);
const store = {
  get(k, d) { try { let v = localStorage.getItem(nk(k)); if (v === null && ME && ME.role === 'admin') v = localStorage.getItem(k); /* kept from before accounts existed */ return JSON.parse(v) ?? d; } catch { return d; } },
  set(k, v) { try { localStorage.setItem(nk(k), JSON.stringify(v)); } catch {} queueSetting(k, v); },
  del(k) { try { localStorage.removeItem(nk(k)); if (ME && ME.role === 'admin') localStorage.removeItem(k); } catch {} queueSetting(k, null); },
};
async function loadMe() {
  try { const r = await fetch('/api/me'); if (r.ok) { ME = await r.json(); try { localStorage.setItem('me_cache', JSON.stringify(ME)); } catch {} } }
  catch { try { ME = JSON.parse(localStorage.getItem('me_cache')); } catch {} } // offline: the last known access (the server still decides)
}
// Signal is for desktop-class screens only (a window at least 900 px wide with a mouse or trackpad), and needs the server to have it set up.
const sgMQ = matchMedia('(min-width: 900px) and (pointer: fine)');
const allowed = id => (!ME || ME.tabs.includes(id)) && (id !== 'signal' || (!!cfg.signal && sgMQ.matches)); // (Signal also needs the server to have it set up)
/** Pull saved settings from the server into this browser; push up anything only this browser has (first run / migration). */
async function loadSettings() {
  try {
    const r = await fetch('/api/settings'); if (!r.ok) return;
    const { values } = await r.json();
    for (const k of SYNCED) {
      if (k in values) { try { localStorage.setItem(nk(k), JSON.stringify(values[k])); } catch {} }
      else { const local = store.get(k); if (local !== undefined && local !== null) queueSetting(k, local); }
    }
  } catch {} // offline: keep using what this browser has
}

const ICONS = {
  lyrics: '<path d="M5 6h14M5 11h10M5 16h14M5 21h8"/>',
  chat: '<path d="M4 5h16a1 1 0 011 1v10a1 1 0 01-1 1H10l-5 4v-4H4a1 1 0 01-1-1V6a1 1 0 011-1z"/>',
  clip: '<path d="M20 11l-8 8a5 5 0 01-7-7l8-8a3.5 3.5 0 015 5l-8 8a2 2 0 01-3-3l7-7"/>',
  send: '<path d="M4 12l16-8-6 16-3-7z"/>',
  menu: '<path d="M4 7h16M4 12h16M4 17h16"/>',
  home: '<path d="M3 11l9-8 9 8M5 10v10h14V10"/>',
  mail: '<rect x="3" y="5" width="18" height="14" rx="2"/><path d="M3 7l9 6 9-6"/>',
  files: '<path d="M3 7a2 2 0 012-2h4l2 2h8a2 2 0 012 2v8a2 2 0 01-2 2H5a2 2 0 01-2-2z"/>',
  doc: '<path d="M7 3h7l5 5v13H7z"/><path d="M14 3v5h5M10 13h6M10 17h6"/>',
  cog: '<circle cx="12" cy="12" r="3"/><path d="M12 2v3M12 19v3M2 12h3M19 12h3M5 5l2 2M17 17l2 2M19 5l-2 2M7 17l-2 2"/>',
  chev: '<path d="M9 6l6 6-6 6"/>',
  back: '<path d="M15 6l-6 6 6 6"/>',
  edit: '<path d="M4 20h4L19 9l-4-4L4 16z"/>',
  up: '<path d="M12 16V4M7 9l5-5 5 5M5 20h14"/>',
  newdir: '<path d="M3 7a2 2 0 012-2h4l2 2h8a2 2 0 012 2v8a2 2 0 01-2 2H5a2 2 0 01-2-2zM12 10v6M9 13h6"/>',
  file: '<path d="M7 3h7l5 5v13H7z"/><path d="M14 3v5h5"/>',
  dl: '<path d="M12 4v12M7 11l5 5 5-5M5 20h14"/>',
  audio: '<path d="M4 14v-2a8 8 0 0116 0v2"/><rect x="3" y="14" width="4" height="7" rx="1.5"/><rect x="17" y="14" width="4" height="7" rx="1.5"/>',
  sort: '<path d="M7 4v16M4 17l3 3 3-3M17 20V4M14 7l3-3 3 3"/>',
  refresh: '<path d="M20 12a8 8 0 11-2.3-5.7M20 4v5h-5"/>',
  full: '<path d="M4 9V4h5M20 9V4h-5M4 15v5h5M20 15v5h-5"/>',
  ext: '<path d="M14 4h6v6M20 4l-9 9M18 14v5a1 1 0 01-1 1H5a1 1 0 01-1-1V7a1 1 0 011-1h5"/>',
  copy: '<rect x="8" y="8" width="12" height="12" rx="2"/><path d="M16 8V6a2 2 0 00-2-2H6a2 2 0 00-2 2v8a2 2 0 002 2h2"/>',
  music: '<path d="M9 18V5l11-2v13"/><circle cx="6" cy="18" r="3"/><circle cx="17" cy="16" r="3"/>',
  play: '<path d="M7 4l13 8-13 8z" fill="currentColor"/>',
  pause: '<path d="M7 4h3v16H7zM14 4h3v16h-3z" fill="currentColor"/>',
  next: '<path d="M6 5l10 7-10 7zM18 5v14"/>',
  spin: '<path d="M12 3a9 9 0 109 9" class="spin"/>',
  x: '<path d="M6 6l12 12M18 6L6 18"/>',
  prev: '<path d="M18 5L8 12l10 7zM6 5v14"/>',
  repeat: '<path d="M4 11V9a3 3 0 013-3h12M16 3l3 3-3 3M20 13v2a3 3 0 01-3 3H5M8 21l-3-3 3-3"/>',
  shuffle: '<path d="M3 7h3c4 0 5 10 9 10h6M3 17h3c1.5 0 2.5-1.5 3.5-3M15 7h6M18 4l3 3-3 3M18 14l3 3-3 3"/>',
  more: '<circle cx="5" cy="12" r="1.6" fill="currentColor"/><circle cx="12" cy="12" r="1.6" fill="currentColor"/><circle cx="19" cy="12" r="1.6" fill="currentColor"/>',
  cal: '<rect x="3" y="5" width="18" height="16" rx="2"/><path d="M3 10h18M8 3v4M16 3v4"/>',
  search: '<circle cx="11" cy="11" r="7"/><path d="M20 20l-4-4"/>',
  book: '<path d="M4 5a2 2 0 012-2h13v16H6a2 2 0 00-2 2z"/><path d="M19 19v2H6a2 2 0 01-2-2"/><path d="M9 7h6"/>',
  mic: '<rect x="9" y="3" width="6" height="11" rx="3"/><path d="M5 11a7 7 0 0014 0M12 18v3M9 21h6"/>',
  plus: '<path d="M12 5v14M5 12h14"/>',
  link: '<path d="M10 14a4 4 0 005.7 0l3-3a4 4 0 00-5.7-5.7l-1 1M14 10a4 4 0 00-5.7 0l-3 3a4 4 0 005.7 5.7l1-1"/>',
  check: '<circle cx="12" cy="12" r="9"/><path d="M8 12.5l3 3 5-6"/>',
  trash: '<path d="M4 7h16M9 7V4h6v3M6 7l1 13h10l1-13"/>',
};
const icon = (n, cls = '') => `<svg class="${cls}" viewBox="0 0 24 24">${ICONS[n]}</svg>`;

let cfg = { mail: '', podcast: 'https://podcast.necloud.us/', verse: 'https://versebyversewithnate.us/admin', audiobooks: 'https://audiobooks.necloud.us', seafile: 'https://seafile.necloud.us', onlyoffice: 'https://onlyoffice.necloud.us' };

// ---- Seafile client (via same-origin proxy)
const sf = {
  token: () => store.get('sf_token'),
  async req(path, opts = {}) {
    const headers = { Authorization: 'Token ' + sf.token(), ...(opts.headers || {}) };
    const r = await fetch('/sf' + path, { ...opts, headers });
    if (r.status === 401) { store.del('sf_token'); throw new Error('Session expired, sign in again'); }
    if (!r.ok) throw new Error((await r.text().catch(() => '')).slice(0, 200) || 'Request failed (' + r.status + ')');
    const t = await r.text();
    try { return JSON.parse(t); } catch { return t; }
  },
  async login(username, password, otp) {
    const headers = { 'Content-Type': 'application/x-www-form-urlencoded' };
    if (otp) headers['X-SEAFILE-OTP'] = otp;
    const r = await fetch('/sf/api2/auth-token/', { method: 'POST', headers, body: new URLSearchParams({ username, password }) });
    const j = await r.json().catch(() => ({}));
    if (!r.ok) {
      if (r.headers.get('x-seafile-otp') === 'required') throw Object.assign(new Error('Enter your 2FA code'), { otp: true });
      throw new Error((j.non_field_errors || [j.detail || j.error || 'Sign in failed']).join(' '));
    }
    store.set('sf_token', j.token);
  },
};

const toast = (m) => { const t = $('#toast'); t.textContent = m; t.classList.add('on'); clearTimeout(toast.t); toast.t = setTimeout(() => t.classList.remove('on'), 2600); };
const ext = n => (n.split('.').pop() || '').toLowerCase();
const EDIT_EXT = new Set(['docx', 'doc', 'odt', 'rtf', 'xlsx', 'xls', 'ods', 'csv', 'pptx', 'ppt', 'odp', 'txt']);
const OFFICE_EXT =new Set(['docx', 'doc', 'odt', 'rtf', 'xlsx', 'xls', 'ods', 'csv', 'pptx', 'ppt', 'odp', 'txt', 'pdf']);
const fmtSize = b => b < 1024 ? b + ' B' : b < 1048576 ? (b / 1024).toFixed(0) + ' KB' : b < 1073741824 ? (b / 1048576).toFixed(1) + ' MB' : (b / 1073741824).toFixed(1) + ' GB';
const fmtDate = s => new Date(s * 1000).toLocaleDateString(undefined, { month: 'short', day: 'numeric', year: 'numeric' });

// ---- Navigation
const TABS = [['home', 'Home'], ['files', 'Files'], ['music', 'Music'], ['mail', 'Mail'], ['signal', 'Signal'], ['tasks', 'Tasks'], ['calendar', 'Calendar'], ['search', 'Search'], ['links', 'Links'], ['office', 'Office'], ['audio', 'Audiobooks'], ['podcast', 'Podcast'], ['verse', 'Podcast Admin'], ['settings', 'Settings']];
const TAB_ICON = { home: 'home', mail: 'mail', signal: 'chat', files: 'files', office: 'doc', audio: 'audio', verse: 'book', podcast: 'mic', music: 'music', settings: 'cog', calendar: 'cal', search: 'search', tasks: 'check', links: 'link' };
const sg = { st: null, convs: [], cur: null, unread: 0, es: null, timers: [], reply: null, tray: [], names: {} }; // Signal state
const PRIMARY = ['home', 'files', 'tasks', 'music', 'mail']; // phone tab bar; the rest sit behind "More"
const phone = matchMedia('(max-width: 767px)');
let activeTab = 'home';

function renderNav(active = activeTab) {
  activeTab = active;
  if (typeof sgDockBadge === 'function') sgDockBadge();
  if (typeof sgBadgeEverywhere === 'function') sgBadgeEverywhere();
  const badge = n => n ? `<i class="nbadge">${n > 99 ? '99+' : n}</i>` : '';
  const tab = ([id, label]) => `<a href="#/${id}" class="${id === active ? 'on' : ''}" ${id === active ? 'aria-current="page"' : ''}>${icon(TAB_ICON[id])}<span>${label}</span>${id === 'signal' ? badge(sg.unread) : id === 'mail' ? badge(mailUnread) : ''}</a>`;
  const brand = `<div class="brand"><img src="/icon.svg" alt=""><span>NE Hub</span></div>`;
  const mine = TABS.filter(t => allowed(t[0]));
  if (phone.matches) {
    const rest = mine.filter(t => !PRIMARY.includes(t[0])), more = !PRIMARY.includes(active);
    $('#nav').innerHTML = mine.filter(t => PRIMARY.includes(t[0])).map(tab).join('') +
      (rest.length ? `<a href="#" id="more" class="${more ? 'on' : ''}" role="button">${icon('more')}<span>More</span>${rest.some(t => t[0] === 'signal') ? badge(sg.unread) : ''}${rest.some(t => t[0] === 'mail') ? badge(mailUnread) : ''}</a>` : '');
    const mo = $('#more'); if (mo) mo.onclick = e => { e.preventDefault(); openMore(); };
  } else {
    $('#nav').innerHTML = brand + mine.map(tab).join('') + `<div class="spacer"></div><button id="navcol" class="navcol" aria-label="Collapse the menu" title="Collapse or expand the menu">${icon('back')}<span>Collapse</span></button>`;
    $('#navcol').onclick = () => setNav({ mini: !navPref().mini });
  }
}
phone.addEventListener('change', () => renderNav());

function openMore() {
  const el = openSheet('More', '', `<div class="list">${TABS.filter(t => !PRIMARY.includes(t[0]) && allowed(t[0])).map(([id, label]) => `
    <a class="row" href="#/${id}">${icon(TAB_ICON[id])}<span class="grow"><b>${label}</b></span>${(id === 'signal' ? sg.unread : id === 'mail' ? mailUnread : 0) ? `<i class="nbadge" style="position:static">${id === 'signal' ? sg.unread : mailUnread}</i>` : ''}${icon('chev', 'chev')}</a>`).join('')}</div>`);
  el.querySelectorAll('a.row').forEach(a => a.addEventListener('click', closeSheet));
}

const routesOf = () => ({ home: viewHome, mail: viewMail, files: viewFiles, office: viewOffice, audio: viewAudio, verse: viewVerse, podcast: viewPodcast, music: viewMusic, tasks: viewTasks, search: viewSearch, calendar: viewCalendar, signal: viewSignal, links: viewLinks, settings: viewSettings, edit: viewEdit });
let editor;
// Menu on a tablet or computer: collapse it to icons (wide screens), or hide it completely. Remembered on this device.
const navPref = () => { try { return JSON.parse(localStorage.getItem('nav_pref')) || {}; } catch { return {}; } };
function applyNav() { const p = navPref(); document.body.classList.toggle('nav-mini', !!p.mini); document.body.classList.toggle('nav-hidden', !!p.hidden); }
function setNav(patch) { try { localStorage.setItem('nav_pref', JSON.stringify({ ...navPref(), ...patch })); } catch {} applyNav(); }
applyNav();
addEventListener('keydown', e => { if ((e.metaKey || e.ctrlKey) && !e.shiftKey && !e.altKey && e.key.toLowerCase() === 'b' && !/^(INPUT|TEXTAREA|SELECT)$/.test(e.target.tagName || '')) { e.preventDefault(); setNav({ hidden: !navPref().hidden }); } });
// In-app Back / Forward (an installed app has no browser buttons). Each history entry remembers its position so we know what is possible.
let navIdx = 0, navMax = 0, navStarted = false;
const parentHash = () => { const p = location.hash.split('/'); return p.length > 3 ? p.slice(0, -1).join('/') : ''; }; // e.g. #/files/lib/a/b -> #/files/lib/a
function trackNav() {
  const s = history.state;
  if (s && s.i != null) navIdx = s.i;
  else { navIdx = navStarted ? navIdx + 1 : 0; navMax = Math.max(navMax, navIdx); if (navStarted) navMax = navIdx; try { history.replaceState({ ...(s || {}), i: navIdx }, ''); } catch {} }
  navStarted = true; navMax = Math.max(navMax, navIdx);
}
function drawNav() {
  const el = $('#navbar'); if (!el) return;
  const canBack = navIdx > 0 || !!parentHash(), canFwd = navIdx < navMax;
  if (!el.dataset.on) {
    el.dataset.on = 1;
    el.innerHTML = `<button class="ibtn navtoggle" id="nvm" aria-label="Show or hide the menu" title="Show or hide the menu (Ctrl/Cmd+B)">${icon('menu')}</button><button class="ibtn" id="nvb" aria-label="Back" title="Back">${icon('back')}</button><button class="ibtn" id="nvf" aria-label="Forward" title="Forward">${icon('chev')}</button><span id="nvt"></span>`;
    $('#nvm').onclick = () => setNav({ hidden: !navPref().hidden });
    $('#nvb').onclick = () => { if (navIdx > 0) history.back(); else if (parentHash()) location.hash = parentHash(); };
    $('#nvf').onclick = () => history.forward();
  }
  $('#nvb').disabled = !canBack; $('#nvf').disabled = !canFwd;
  const t = TABS.find(x => x[0] === activeTab); $('#nvt').textContent = t ? t[1] : '';
  el.hidden = false;
}
addEventListener('popstate', e => { if (e.state && e.state.i != null) { navIdx = e.state.i; drawNav(); } });
function route() {
  trackNav();
  const [, id = 'home', ...rest] = location.hash.split('/');
  const routes = routesOf();
  let name = routes[id] ? id : 'home';
  if (name === 'edit' ? !(allowed('files') || allowed('office')) : !allowed(name)) { name = 'home'; if (location.hash !== '#/home') history.replaceState(null, '', '#/home'); } // not one of their tabs
  try { editor?.destroyEditor(); } catch {}
  editor = null;
  document.body.classList.toggle('editing', name === 'edit');
  document.body.classList.remove('inedit', 'onaudio');
  sg.timers.forEach(clearInterval); sg.timers = []; // (Signal screens start their own)
  const aw = $('#audiowrap'); if (aw) aw.className = 'off'; // hide (not destroy) the audiobooks frame
  renderNav(name === 'edit' ? 'files' : name);
  drawNav();
  routes[name](rest.map(decodeURIComponent));
  sgDockSync(name);
  $('#view').scrollTop = 0;
}

function tile(href, color, ic, title, sub, external) {
  return `<a class="tile" href="${esc(href)}" ${external ? 'target="_blank" rel="noopener"' : ''}>
    <span class="ic" style="background:${color}">${icon(ic)}</span><b>${esc(title)}</b><small>${esc(sub)}</small></a>`;
}

// ---- Views
function viewHome() {
  const h = new Date().getHours();
  const greet = h < 5 ? 'Good night' : h < 12 ? 'Good morning' : h < 18 ? 'Good afternoon' : 'Good evening';
  const recents = store.get('recents', []).slice(0, 5);
  const t = typeof cur === 'function' ? cur() : null;
  $('#view').innerHTML = `<div class="wrap"><h1>${greet}</h1>
    ${allowed('search') ? `<a class="searchbar" href="#/search">${icon('search')}<span>Search tasks, events, files, music</span></a>` : ''}
    <div class="bar" style="margin-top:8px"><button class="btn ghost" id="qadd">${icon('plus')}Quick add</button><button class="btn ghost" id="qpal">${icon('search')}Command palette <small style="opacity:.7;margin-left:4px">${/Mac|iPhone|iPad/.test(navigator.platform) ? '⌘K' : 'Ctrl K'}</small></button></div>
    ${allowed('music') ? '<div id="npslot"></div>' : ''}
    <div id="tcard"></div>
    <div id="agenda"></div>
    ${recents.length && allowed('files') ? `<h2>Recent files</h2><div class="list">${recents.map((r, i) => `<button class="row" data-r="${i}"><span class="ic" style="background:${OFFICE_EXT.has(ext(r.name)) ? '#e0742b' : '#6a7280'}">${icon('file')}</span><span class="grow"><b>${esc(r.name)}</b><small>${esc(r.path.slice(0, r.path.lastIndexOf('/')) || '/')}</small></span></button>`).join('')}</div>` : ''}
    <h2>Apps</h2><div class="grid">
      ${allowed('files') ? tile('#/files', '#2f9e6e', 'files', 'Files', 'Seafile') : ''}
      ${allowed('music') ? tile('#/music', '#e5a00d', 'music', 'Music', 'Plex') : ''}
      ${allowed('tasks') ? tile('#/tasks', '#4f7cff', 'check', 'Tasks', 'To-do lists') : ''}
      ${allowed('calendar') ? tile('#/calendar', '#d9453a', 'cal', 'Calendar', 'Agenda') : ''}
      ${allowed('office') ? tile('#/office', '#e0742b', 'doc', 'Office', 'OnlyOffice') : ''}
      ${allowed('audio') ? tile('#/audio', '#8a5cf0', 'audio', 'Audiobooks', 'Listen') : ''}
      ${allowed('podcast') ? tile('#/podcast', '#c2417a', 'mic', 'Podcast', 'Podcasts') : ''}
      ${allowed('verse') && cfg.verse ? tile(cfg.verse, '#0f9d9a', 'book', 'Podcast Admin', 'Opens in a new tab', true) : ''}
      ${allowed('signal') ? tile('#/signal', '#3a76f0', 'chat', 'Signal', sg.unread ? sg.unread + ' unread' : 'Messages') : ''}
      ${allowed('links') ? tile('#/links', '#0f9d9a', 'link', 'Links', (store.get('links', []) || []).length + ' saved') : ''}
      ${allowed('mail') ? tile('#/mail', '#4f7cff', 'mail', 'Mail', mailUnread ? mailUnread + ' unread' : 'Outlook.com') : ''}
    </div>
    ${allowed('mail') && cfg.mail ? '<div id="mcard"></div>' : ''}</div>`;
  renderNpCard(); // the live Now Playing card (it follows the song and has the controls)
  $('#view').querySelectorAll('button[data-r]').forEach(b => b.onclick = () => {
    const r = recents[b.dataset.r]; openFile(r.repo, r.path, r.name, r.path.slice(0, r.path.lastIndexOf('/')) || '/');
  });
  if ($('#qadd')) { $('#qadd').onclick = () => quickAdd(); $('#qpal').onclick = () => openPalette(); }
  if (allowed('tasks')) renderTasksCard($('#tcard'));
  if ($('#mcard')) renderMailCard($('#mcard'));
  if (allowed('calendar') && typeof renderAgenda === 'function') renderAgenda($('#agenda'), 'today');
}

// Name search by listing each library recursively (cached for the session).
const treeCache = new Map();
async function walkSearch(repos, term) {
  const out = [];
  for (const r of repos.filter(x => !x.encrypted).slice(0, 12)) {
    try {
      let t = treeCache.get(r.id);
      if (!t || Date.now() - t.at > 120e3) { t = { at: Date.now(), items: await sf.req(`/api2/repos/${encodeURIComponent(r.id)}/dir/?p=/&recursive=1`) }; treeCache.set(r.id, t); }
      for (const it of t.items) if (it.name.toLowerCase().includes(term)) {
        const parent = (it.parent_dir || '/').replace(/\/?$/, '/');
        out.push({ repo_id: r.id, repo_name: r.name, name: it.name, fullpath: parent + it.name, is_dir: it.type === 'dir', size: it.size });
        if (out.length >= 40) return out;
      }
    } catch {}
  }
  return out;
}