/* Life OS reliability and productivity add-ons. */
(() => {
  const DRAFT_KEY = 'lifeos_today_draft_v1';
  const appIds = ['today', 'timeline', 'museum', 'insights', 'profile', 'system'];
  const zh = () => (typeof lang === 'function' ? lang() : 'en') === 'zh';
  const copy = (en, cn) => (zh() ? cn : en);

  function readDraft() {
    try { return JSON.parse(localStorage.getItem(DRAFT_KEY)); } catch { return null; }
  }
  function saveDraft(text) {
    localStorage.setItem(DRAFT_KEY, JSON.stringify({ date: new Date().toISOString().slice(0, 10), text, updatedAt: new Date().toISOString() }));
  }
  function restoreDraft(entry) {
    const draft = readDraft();
    const today = new Date().toISOString().slice(0, 10);
    if (!draft || draft.date !== today || !draft.text || entry.value) return;
    entry.value = draft.text;
    entry.dispatchEvent(new Event('input', { bubbles: true }));
    if (typeof toast === 'function') toast(copy('DRAFT RESTORED', '草稿已恢复'));
  }
  function wireToday() {
    const entry = document.querySelector('#entry');
    if (!entry || entry.dataset.lifeosDraft === 'ready') return;
    entry.dataset.lifeosDraft = 'ready';
    restoreDraft(entry);
    entry.addEventListener('input', () => saveDraft(entry.value));
  }
  function wireLanguageControl() {
    const settingsPanel = document.querySelector('#content-system .settings');
    if (!settingsPanel || settingsPanel.querySelector('#lifeos-browser-language')) return;
    const state = settings();
    const actual = typeof browserLanguage === 'function' ? browserLanguage() : 'en';
    const section = document.createElement('section');
    section.id = 'lifeos-browser-language';
    section.innerHTML = `<div class="eyebrow">${copy('BROWSER LANGUAGE', '浏览器语言')}</div><p class="sub">${copy(`Detected: ${actual === 'zh' ? 'Chinese' : 'English'}`, `当前识别：${actual === 'zh' ? '中文' : 'English'}`)}</p><div class="choices"><button class="chip ${state.languageMode !== 'manual' ? 'selected' : ''}" data-language="auto">${copy('AUTO', '跟随浏览器')}</button><button class="chip ${state.languageMode === 'manual' && state.language === 'en' ? 'selected' : ''}" data-language="en">ENGLISH</button><button class="chip ${state.languageMode === 'manual' && state.language === 'zh' ? 'selected' : ''}" data-language="zh">中文</button></div>`;
    section.querySelectorAll('button').forEach(button => button.addEventListener('click', () => setLanguage(button.dataset.language)));
    [...settingsPanel.children].forEach(node => {
      const label = node.querySelector?.('.eyebrow')?.textContent.trim();
      if (label === 'LANGUAGE' || label === '语言') node.remove();
    });
    settingsPanel.prepend(section);
  }
  function clearDraftAfterSave() {
    setTimeout(() => {
      const today = new Date().toISOString().slice(0, 10);
      try {
        const saved = JSON.parse(localStorage.getItem('lifeos_memories') || '[]').some(m => m.date === today);
        if (saved) localStorage.removeItem(DRAFT_KEY);
      } catch {}
    }, 700);
  }

  function closeSearch() { document.querySelector('#lifeos-search')?.remove(); }
  function openSearch() {
    closeSearch();
    const box = document.createElement('div');
    box.id = 'lifeos-search';
    box.innerHTML = `<div class="lifeos-search-backdrop"></div><section class="lifeos-search-panel"><div class="lifeos-search-head"><span>${copy('SEARCH MEMORY ARCHIVE', '搜索记忆档案')}</span><button aria-label="Close">×</button></div><input autofocus placeholder="${copy('Search titles, notes, moods…', '搜索标题、记录或情绪…')}"><div class="lifeos-search-results"></div><p class="lifeos-search-hint">${copy('ESC to close · click a result to open it', 'ESC 关闭 · 点击结果即可打开')}</p></section>`;
    document.body.append(box);
    const input = box.querySelector('input');
    const results = box.querySelector('.lifeos-search-results');
    const render = () => {
      let memories = [];
      try { memories = JSON.parse(localStorage.getItem('lifeos_memories') || '[]'); } catch {}
      const query = input.value.trim().toLowerCase();
      const found = memories.filter(m => !query || [m.filmTitle, m.text, m.mood, m.date].join(' ').toLowerCase().includes(query)).slice(0, 8);
      results.innerHTML = found.length ? found.map(m => `<button data-id="${m.id}"><small>${m.date} · ${(m.mood || '').toUpperCase()}</small><strong>${m.filmTitle || copy('Untitled memory', '未命名记忆')}</strong><span>${(m.text || copy('No written note.', '未写下记录。')).replace(/[&<>]/g, c => ({'&':'&amp;','<':'&lt;','>':'&gt;'}[c]))}</span></button>`).join('') : `<div class="lifeos-search-empty">${copy('No memories found.', '没有找到记忆。')}</div>`;
      results.querySelectorAll('button').forEach(button => button.addEventListener('click', () => { closeSearch(); openApp('timeline'); setTimeout(() => detail(button.dataset.id), 20); }));
    };
    input.addEventListener('input', render);
    box.querySelector('.lifeos-search-head button').addEventListener('click', closeSearch);
    box.querySelector('.lifeos-search-backdrop').addEventListener('click', closeSearch);
    render(); input.focus();
  }

  const style = document.createElement('style');
  style.textContent = `.lifeos-search-backdrop{position:fixed;inset:0;background:#0008;z-index:8000}.lifeos-search-panel{position:fixed;z-index:8001;top:18vh;left:50%;transform:translateX(-50%);width:min(560px,calc(100vw - 28px));background:var(--panel);border:1px solid var(--line);border-radius:15px;box-shadow:var(--shadow);padding:15px}.lifeos-search-head{display:flex;justify-content:space-between;align-items:center;font:500 11px 'DM Mono';letter-spacing:.12em;color:var(--muted);margin-bottom:13px}.lifeos-search-head button{border:0;background:transparent;color:var(--ink);font-size:20px}.lifeos-search-panel input{width:100%;background:var(--panel2);border:1px solid var(--line);border-radius:9px;padding:12px;outline:none}.lifeos-search-panel input:focus{border-color:var(--accent)}.lifeos-search-results{margin-top:9px;max-height:360px;overflow:auto}.lifeos-search-results button{display:grid;gap:3px;width:100%;text-align:left;border:0;border-radius:9px;padding:11px;background:transparent;color:var(--ink)}.lifeos-search-results button:hover{background:var(--panel2)}.lifeos-search-results small,.lifeos-search-results span,.lifeos-search-hint{color:var(--muted);font-size:12px}.lifeos-search-results strong{font-size:14px}.lifeos-search-results span{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.lifeos-search-empty{padding:24px;color:var(--muted);text-align:center;font-size:13px}.lifeos-search-hint{margin:11px 0 0;font:10px 'DM Mono';letter-spacing:.04em}`;
  document.head.append(style);
  new MutationObserver(() => { wireToday(); wireLanguageControl(); }).observe(document.body, { childList: true, subtree: true });
  wireToday();
  wireLanguageControl();
  document.addEventListener('click', e => { if (e.target.closest('#content-today .primary')) clearDraftAfterSave(); });
  document.addEventListener('keydown', e => {
    const mod = e.ctrlKey || e.metaKey;
    if (mod && e.key.toLowerCase() === 'k') { e.preventDefault(); toggleLauncher(); }
    if (mod && e.key.toLowerCase() === 'f') { e.preventDefault(); openSearch(); }
    if (mod && e.key.toLowerCase() === 's' && document.querySelector('#entry')) { e.preventDefault(); archiveToday(); }
    if (e.altKey && /^[1-6]$/.test(e.key)) { e.preventDefault(); openApp(appIds[Number(e.key) - 1]); }
    if (e.key === 'Escape') { closeSearch(); document.querySelector('#launcher')?.classList.add('hidden'); document.querySelector('#calendar')?.classList.add('hidden'); document.querySelector('#life-context')?.remove(); }
  });
})();