(async function() {
  const API = location.origin;
  const PAGE_SIZE = 20;
  let page = 1, total = 0, searchTimer, groupsLoaded, feedbacks = [], shortsListCache = null, shortsFetchTimer = null, lastFbAutoText = '';
  const topicReportCache = new Map();

  function hdr() { const t = sessionStorage.getItem('authToken'); return t ? { 'X-Auth-Token': t } : {}; }
  function fmtDate(d) { if (!d) return ''; if (window.datetime && datetime.fmtShortIso) return datetime.fmtShortIso(d); return d; }
  function fmtDay(d) {
    if (!d) return '';
    try { const dt = new Date(d + 'T12:00:00'); return dt.toLocaleDateString('ru-RU', { weekday: 'short' }); } catch (e) { return ''; }
  }
  function escapeHtml(s) { return String(s||'').replace(/&/g,'&amp;').replace(/</g,'&lt;').replace(/>/g,'&gt;').replace(/"/g,'&quot;').replace(/'/g,'&#039;'); }

  function aiBadge(s) {
    switch (s) {
      case 'pending': return '<span class="ai-badge pending">Ожидает</span>';
      case 'processing': return '<span class="ai-badge processing">В обработке</span>';
      case 'done': return '<span class="ai-badge done">Готово</span>';
      case 'error': return '<span class="ai-badge error">Ошибка</span>';
      case 'skipped': return '<span class="ai-badge skipped">Пропущен</span>';
      default: return '<span class="ai-badge none">Без ИИ</span>';
    }
  }

  function fbItemHtml(f) {
    const text = (f.text||'').trim();
    const del = f.deleted_at ? ' style="opacity:.5"' : '';
    const day = fmtDay(f.feedback_date);
    return `<div class="lesson-item feedback-item" data-id="${f.id}"${del}>
      <div class="lesson-item-head">
        <span class="lesson-group">${escapeHtml(f.group_name||'')}</span>
        <span class="lesson-when">${fmtDate(f.feedback_date)}${day ? ` · ${day}` : ''}</span>
        ${f.deleted_at ? '<span class="lesson-badge">Удалён</span>' : ''}
        ${aiBadge(f.ai_status)}
        ${f.sent_at ? '<span class="ai-badge ai-badge-sent">Отправлено</span>' : ''}
        <div class="lesson-actions">
          ${f.ai_status === 'error' ? `<button type="button" class="btn-link" data-retry="${f.id}">Повторить</button>` : ''}
          ${f.deleted_at ? '' : `<button type="button" class="btn-link" data-sent="${f.id}">${f.sent_at ? 'Вернуть' : 'Отправлено'}</button>`}
          <button type="button" class="btn-link" data-edit="${f.id}">Изменить</button>
          <button type="button" class="btn-link danger" data-del="${f.id}">${f.deleted_at ? 'Удалить навсегда' : 'Удалить'}</button>
          ${f.deleted_at ? `<button type="button" class="btn-link" data-restore="${f.id}">Восстановить</button>` : ''}
        </div>
      </div>
      ${f.resident ? `<div class="lesson-author">${escapeHtml(f.resident)}</div>` : ''}
      ${f.topic ? `<div class="lesson-topic">${escapeHtml(f.topic)}</div>` : ''}
      ${text ? `<div class="lesson-text">${escapeHtml(text)}</div>` : ''}
    </div>`;
  }

  function ensureModal() {
    let m = document.getElementById('feedbackModal');
    if (m) return m;
    m = document.createElement('div');
    m.className = 'modal-overlay';
    m.id = 'feedbackModal';
    document.body.appendChild(m);
    return m;
  }

  function openModal({id}) {
    const m = document.getElementById('feedbackModal');
    if (!m) return;
    m.classList.add('open');
    resetForm();
    if (id) loadFeedback(id);
  }
  function closeModal() {
    const m = document.getElementById('feedbackModal');
    if (m) m.classList.remove('open');
  }

  function todayIso() {
    try { if (window.datetime && datetime.todayIso) return datetime.todayIso(); } catch (e) {}
    const d = new Date(); const y=d.getFullYear(), mo=String(d.getMonth()+1).padStart(2,'0'), da=String(d.getDate()).padStart(2,'0'); return `${y}-${mo}-${da}`;
  }

  let residentNamesLoaded = false;
  const residentGroups = new Map();
  const normName = s => String(s || '').trim().replace(/\s+/g, ' ').toLowerCase();
  async function loadResidentNames() {
    if (residentNamesLoaded) return;
    try {
      const r = await fetch(`${API}/api/students/names-with-groups`, { headers: hdr() });
      if (!r.ok) return;
      const rows = await r.json();
      residentGroups.clear();
      (rows||[]).forEach(x => {
        const k = normName(x.name);
        if (k && !residentGroups.has(k)) residentGroups.set(k, x.group_id);
      });
      const dl = document.getElementById('fbResidentList');
      if (dl) dl.innerHTML = (rows||[]).map(x => `<option value="${escapeHtml(x.name)}">`).join('');
      residentNamesLoaded = true;
    } catch (e) {}
  }

  function applyResidentGroup() {
    const k = normName(document.getElementById('fbResident').value);
    if (!k || !residentGroups.has(k)) return;
    const gid = residentGroups.get(k);
    const sel = document.getElementById('fbGroup');
    if (!gid || !sel) return;
    if (![...sel.options].some(o => o.value === String(gid))) return;
    sel.value = String(gid);
  }

  let topicsLoaded = false;
  async function loadTopics() {
    if (topicsLoaded) return;
    try {
      const r = await fetch(`${API}/api/lesson-reports/topics`, { headers: hdr() });
      if (!r.ok) return;
      const topics = await r.json();
      const dl = document.getElementById('fbTopicList');
      if (dl) dl.innerHTML = (topics||[]).map(t => `<option value="${escapeHtml(t)}">`).join('');
      topicsLoaded = true;
    } catch (e) {}
  }

  async function applyTopicText() {
    const topicEl = document.getElementById('fbTopic');
    const textEl = document.getElementById('fbText');
    const hint = document.getElementById('fbTextHint');
    const topic = topicEl.value.trim();
    if (!topic) return;
    let rep = topicReportCache.get(topic);
    if (rep === undefined) {
      try {
        const r = await fetch(`${API}/api/lesson-reports/by-topic?topic=${encodeURIComponent(topic)}`, { headers: hdr() });
        rep = r.ok ? (await r.json()).report : null;
      } catch (e) { return; }
      topicReportCache.set(topic, rep);
    }
    const next = (rep && rep.text || '').trim();
    if (!next) return;
    const cur = textEl.value;
    if (cur.trim() && cur !== lastFbAutoText) return;
    textEl.value = next;
    lastFbAutoText = next;
    hint.textContent = `${next.length} / 5000`;
  }

  async function loadGroups() {
    if (groupsLoaded) return;
    try {
      const r = await fetch(`${API}/api/groups`, { headers: hdr() });
      if (r.ok) {
        const list = await r.json();
        const sel = document.getElementById('fbGroup');
        const fsel = document.getElementById('fbGroupFilter');
        if (sel) sel.innerHTML = '<option value="">-- выберите --</option>';
        if (fsel) fsel.innerHTML = '<option value="">Все группы</option>';
        (list||[]).filter(x=>!x.deleted_at).forEach(g => {
          const opt = document.createElement('option'); opt.value = g.id; opt.textContent = g.name; sel && sel.appendChild(opt.cloneNode(true)); fsel && fsel.appendChild(opt);
        });
        groupsLoaded = true;
      }
    } catch (e) {}
  }

  async function loadAiProfiles() {
    try {
      const r = await fetch(`${API}/api/ai/profiles`, { headers: hdr() });
      if (r.ok) {
        const d = await r.json();
        const sel = document.getElementById('fbModel');
        if (!sel) return;
        sel.innerHTML = '';
        const nativeOpt = document.createElement('option'); nativeOpt.value = 'native'; nativeOpt.textContent = 'Нативная (llama.cpp)'; sel.appendChild(nativeOpt);
        (d.profiles||[]).forEach(p => { const o = document.createElement('option'); o.value = p.id; o.textContent = p.name; sel.appendChild(o); });
        if (d.active) sel.value = d.active;
      }
    } catch (e) {}
  }

  async function fetchShorts(q) {
    if (!q || q.length < 2) { shortsListCache = []; renderShorts([]); return; }
    try {
      const r = await fetch(`${API}/api/shorts?search=${encodeURIComponent(q)}&limit=50&deleted=0&used=0`, { headers: hdr() });
      if (r.ok) {
        const j = await r.json();
        shortsListCache = j.items || []; renderShorts(shortsListCache);
      }
    } catch (e) {}
  }

  async function loadLastPastReview() {
    const resident = document.getElementById('fbResident').value.trim();
    if (!resident) return;
    try {
      const r = await fetch(`${API}/api/feedbacks/last?resident=${encodeURIComponent(resident)}`, { headers: hdr() });
      if (r.ok) {
        const row = await r.json();
        if (row && row.text) document.getElementById('fbPastReview').value = row.text;
      }
    } catch (e) {}
  }

  function renderShorts(items) {
    const wrap = document.getElementById('fbShortsWrap');
    const list = document.getElementById('fbShortsList');
    if (!list || !wrap) return;
    if (!items.length) { wrap.style.display = 'none'; list.innerHTML = ''; return; }
    wrap.style.display = '';
    list.innerHTML = items.map(s => {
      const text = (s.message||'').slice(0,120);
      const topic = s.topic || '-';
      return `<div class="item"><input type="checkbox" name="fbShort" value="${s.id}" checked><label>${escapeHtml(s.lesson_date||'')} – ${escapeHtml(topic)} – ${escapeHtml(text)}</label></div>`;
    }).join('');
  }

  function resetForm() {
    document.getElementById('fbId').value = '';
    document.getElementById('fbDate').value = todayIso();
    document.getElementById('fbGroup').value = '';
    document.getElementById('fbResident').value = '';
    document.getElementById('fbTopic').value = '';
    document.getElementById('fbPastCheck').checked = false;
    document.getElementById('fbPastReviewWrap').style.display = 'none';
    document.getElementById('fbPastReview').value = '';
    document.getElementById('fbShortsWrap').style.display = 'none';
    document.getElementById('fbShortsList').innerHTML = '';
    document.getElementById('fbText').value = '';
    lastFbAutoText = '';
    document.getElementById('fbTextHint').textContent = '0 / 5000';
    document.getElementById('fbAiCheck').checked = true;
    document.getElementById('fbAiStatus').hidden = true;
    document.getElementById('fbModalTitle').textContent = 'Добавить отзыв';
    document.getElementById('fbSubmit').textContent = 'Отправить в очередь';
  }

  async function loadFeedback(id) {
    try {
      const r = await fetch(`${API}/api/feedbacks/${id}`, { headers: hdr() });
      if (r.ok) {
        const f = await r.json();
        document.getElementById('fbId').value = f.id;
        document.getElementById('fbDate').value = f.feedback_date || todayIso();
        document.getElementById('fbGroup').value = f.group_id || '';
        document.getElementById('fbResident').value = f.resident || '';
        document.getElementById('fbTopic').value = f.topic || '';
        if (f.past_review) {
          document.getElementById('fbPastCheck').checked = true;
          document.getElementById('fbPastReviewWrap').style.display = '';
          document.getElementById('fbPastReview').value = f.past_review;
        }
        document.getElementById('fbText').value = f.text || '';
        lastFbAutoText = '';
        document.getElementById('fbTextHint').textContent = `${(f.text||'').length} / 5000`;
        document.getElementById('fbAiCheck').checked = (f.ai_status === 'pending' || f.ai_status === 'processing' || f.ai_status === 'none') ? true : false;
        document.getElementById('fbModalTitle').textContent = 'Редактировать отзыв';
        document.getElementById('fbSubmit').textContent = 'Сохранить';
        if (f.short_message_ids && f.short_message_ids.length) {
          try {
            const list = [];
            for (const sid of f.short_message_ids.slice(0,20)) {
              const sr = await fetch(`${API}/api/shorts/${sid}`, { headers: hdr() });
              if (sr.ok) list.push(await sr.json());
            }
            renderShorts(list);
          } catch (e) {}
        }
      }
    } catch (e) {}
  }

  async function loadFeedbacks() {
    const el = document.getElementById('feedbackList');
    const st = document.getElementById('feedbackState');
    if (!el) return;
    el.innerHTML = '<div class="muted">Загрузка…</div>';
    const q = new URLSearchParams();
    q.set('limit', PAGE_SIZE); q.set('offset', (page-1)*PAGE_SIZE);
    const s = document.getElementById('fbSearch').value.trim(); if (s) q.set('search', s);
    const g = document.getElementById('fbGroupFilter').value; if (g) q.set('group_id', g);
    const stv = document.getElementById('fbStatusFilter').value; if (stv) q.set('status', stv);
    const df = document.getElementById('fbDateFrom').value; if (df) q.set('date_from', df);
    const dt = document.getElementById('fbDateTo').value; if (dt) q.set('date_to', dt);
    if (document.getElementById('fbDeletedToggle').checked) q.set('deleted', '1');
    try {
      const r = await fetch(`${API}/api/feedbacks?${q.toString()}`, { headers: hdr() });
      if (r.ok) {
        const j = await r.json();
        feedbacks = j.items || [];
        total = j.total || 0;
        el.innerHTML = feedbacks.length ? feedbacks.map(fbItemHtml).join('') : '<div class="muted">Список пуст</div>';
        if (st) st.textContent = `Всего: ${total}`;
        renderPager(total, page, PAGE_SIZE, p => { page = p; loadFeedbacks(); });
      } else { el.innerHTML = '<div class="muted">Ошибка загрузки</div>'; }
    } catch (e) { el.innerHTML = '<div class="muted">Ошибка</div>'; }
    if (window.lucide) lucide.createIcons();
  }

  function renderPager(total, cur, size, onChange) {
    const el = document.getElementById('pager');
    if (!el) return;
    const pages = Math.max(1, Math.ceil(total/size));
    if (pages <= 1) { el.innerHTML = ''; return; }
    let html = '';
    for (let i=1;i<=pages;i++) {
      html += `<button class="btn-xs ${i===cur?'primary':''}" data-page="${i}">${i}</button>`;
    }
    el.innerHTML = html;
    el.querySelectorAll('[data-page]').forEach(b => b.addEventListener('click', () => onChange(parseInt(b.dataset.page,10))));
  }

  document.addEventListener('DOMContentLoaded', async () => {
    await checkAuth().catch(()=>{});
    buildSidebar('feedback');
    await loadGroups();
    await loadAiProfiles();
    await loadResidentNames();
    loadTopics();
    loadFeedbacks();
    connectFeedbackLive();
    document.getElementById('addFeedbackBtn').addEventListener('click', () => openModal({}));
    document.getElementById('fbCancel').addEventListener('click', closeModal);
    document.getElementById('feedbackModal').addEventListener('click', e => { if (e.target.id === 'feedbackModal') closeModal(); });
    document.getElementById('fbForm').addEventListener('submit', async e => {
      e.preventDefault();
      const id = document.getElementById('fbId').value;
      const body = {
        feedback_date: document.getElementById('fbDate').value,
        group_id: parseInt(document.getElementById('fbGroup').value,10),
        resident: document.getElementById('fbResident').value.trim(),
        topic: document.getElementById('fbTopic').value.trim(),
        past_review: document.getElementById('fbPastCheck').checked ? document.getElementById('fbPastReview').value.trim() : null,
        text: document.getElementById('fbText').value.trim(),
        ai_check: document.getElementById('fbAiCheck').checked,
        ai_profile: document.getElementById('fbModel').value || null,
      };
      const shortIds = [];
      document.querySelectorAll('input[name="fbShort"]:checked').forEach(c => shortIds.push(parseInt(c.value,10)));
      body.short_message_ids = shortIds;
      const url = id ? `${API}/api/feedbacks/${id}` : `${API}/api/feedbacks`;
      const method = id ? 'PUT' : 'POST';
      try {
        const r = await fetch(url, { method, headers: {...hdr(), 'Content-Type':'application/json'}, body: JSON.stringify(body) });
        if (r.ok) { closeModal(); loadFeedbacks(); }
      } catch (e) {}
    });
    document.getElementById('fbResident').addEventListener('input', () => {
      clearTimeout(shortsFetchTimer);
      const v = document.getElementById('fbResident').value.trim();
      applyResidentGroup();
      shortsFetchTimer = setTimeout(() => fetchShorts(v), 400);
    });
    document.getElementById('fbResident').addEventListener('change', applyResidentGroup);
    document.getElementById('fbPastCheck').addEventListener('change', e => {
      document.getElementById('fbPastReviewWrap').style.display = e.target.checked ? '' : 'none';
      if (e.target.checked) loadLastPastReview();
    });
    document.getElementById('fbText').addEventListener('input', () => {
      document.getElementById('fbTextHint').textContent = `${document.getElementById('fbText').value.length} / 5000`;
    });
    document.getElementById('fbTopic').addEventListener('change', applyTopicText);
    document.getElementById('feedbackList').addEventListener('click', async e => {
      const sentBtn = e.target.closest('[data-sent]'); if (sentBtn) {
        const id = parseInt(sentBtn.dataset.sent, 10);
        if (!id) return;
        const f = feedbacks.find(x => x.id === id);
        const next = !(f && f.sent_at);
        try { const r = await fetch(`${API}/api/feedbacks/${id}/sent`, { method:'PUT', headers: {...hdr(), 'Content-Type':'application/json'}, body: JSON.stringify({ sent: next }) }); if (r.ok) loadFeedbacks(); } catch (e) {}
        return;
      }
      const edit = e.target.closest('[data-edit]'); if (edit) { openModal({id: parseInt(edit.dataset.edit,10)}); return; }
      const del = e.target.closest('[data-del]'); if (del) {
        const id = parseInt(del.dataset.id||del.dataset.del,10);
        if (!id) return;
        if (!confirm('Удалить отзыв?')) return;
        try { const r = await fetch(`${API}/api/feedbacks/${id}`, { method:'DELETE', headers: hdr() }); if (r.ok) loadFeedbacks(); } catch (e) {}
        return;
      }
      const ret = e.target.closest('[data-restore]'); if (ret) {
        const id = parseInt(ret.dataset.id||ret.dataset.restore,10);
        if (!id) return;
        try { const r = await fetch(`${API}/api/feedbacks/${id}/restore`, { method:'PUT', headers: hdr() }); if (r.ok) loadFeedbacks(); } catch (e) {}
        return;
      }
      const retry = e.target.closest('[data-retry]'); if (retry) {
        const id = parseInt(retry.dataset.id||retry.dataset.retry,10);
        if (!id) return;
        try { const r = await fetch(`${API}/api/feedbacks/${id}/ai/retry`, { method:'POST', headers: hdr() }); if (r.ok) loadFeedbacks(); } catch (e) {}
        return;
      }
    });
    ['fbSearch','fbGroupFilter','fbStatusFilter','fbDateFrom','fbDateTo','fbDeletedToggle'].forEach(id => {
      document.getElementById(id).addEventListener('change', () => { page = 1; loadFeedbacks(); });
      if (id === 'fbSearch') document.getElementById(id).addEventListener('input', () => { clearTimeout(searchTimer); searchTimer = setTimeout(() => { page = 1; loadFeedbacks(); }, 350); });
    });
    if (window.lucide) lucide.createIcons();
  });

  let liveSource = null, liveReconnectTimer = null;
  function connectFeedbackLive() {
    if (liveSource) { liveSource.close(); liveSource = null; }
    const connect = () => {
      const t = sessionStorage.getItem('authToken');
      if (!t) return;
      liveSource = new EventSource(`${API}/api/events?token=${encodeURIComponent(t)}`);
      liveSource.addEventListener('feedbacks_changed', () => { page = 1; loadFeedbacks(); });
      liveSource.addEventListener('feedback_status', () => { loadFeedbacks(); });
      liveSource.onerror = () => {
        if (liveSource) { liveSource.close(); liveSource = null; }
        if (liveReconnectTimer) clearTimeout(liveReconnectTimer);
        liveReconnectTimer = setTimeout(connect, 5000);
      };
    };
    connect();
  }
})();