function logNotificationBadge(item) {
  const notification = item?.metadata?.notification;
  if (notification?.status !== 'silent') return '';
  const reasonKey = {
    alert_type_disabled: 'logs.silentAlertTypeDisabled',
    notifications_disabled: 'logs.silentNotificationsDisabled',
    mode_filtered: 'logs.silentModeFiltered',
    cooldown: 'logs.silentCooldown',
  }[notification.reason] || 'logs.silentHint';
  return `<span class="badge silent log-notification-badge" title="${esc(tr(reasonKey))}">${esc(tr('logs.silent'))}</span>`;
}

async function loadLogs() {
  renderLogRetention();
  try {
    const data = await api('/api/events?limit=150');
    const level = $('#logLevelFilter')?.value || 'all', category = $('#logCategoryFilter')?.value || 'all';
    const logs = (data.events || []).filter(item => (level === 'all' || item.level === level) && (category === 'all' || logCategory(item.kind) === category));
    $('#logList').innerHTML = logs.length
      ? logs.map(item => `<div class="log-row ${esc(item.level)} category-${esc(logCategory(item.kind))}"><time>${esc(new Date(item.timestamp).toLocaleTimeString(locale()))}</time><span class="log-category">${esc(logCategory(item.kind))}</span><span class="kind">${esc(item.kind)}${logNotificationBadge(item)}</span><span class="message">${esc(item.message)}</span></div>`).join('')
      : `<div class="empty"><strong>${esc(tr('logs.emptyTitle'))}</strong>${esc(tr('logs.emptyText'))}</div>`;
  } catch (error) { toast(error.message, true); }
}

async function handleWebSocketMessage(event) {
  try {
    const message = JSON.parse(event.data);
    if (message.event === 'bootstrap') {
      const data = message.data || {};
      const hasControlPlan = applyBootstrapSnapshot(data);
      app.controlPlanPushReady = hasControlPlan;
      if (hasControlPlan) stopControlPlanFallback();
      renderAll();
      if (!hasControlPlan) scheduleControlPlanLoad(0);
      if (app.settings?.debug?.overlay_enabled) loadDebugBacklog();
      return;
    }
    const data = message.data || {};
    if (message.event === 'control_plan.updated') { app.controlPlanPushReady = true; stopControlPlanFallback(); applyControlPlan(data.plan, data.revision); }
    else if (message.event === 'device.updated') { updateDevice(data); renderSummary(); renderDevices(); renderGroups(); scheduleControlPlanLoad(); }
    else if (message.event === 'device.created') { updateDevice(data); renderSummary(); renderDevices(); renderGroups(); fillSelects(); scheduleControlPlanLoad(); }
    else if (message.event === 'device.deleted') { app.devices = app.devices.filter(v => v.id !== data.id); renderAll(); scheduleControlPlanLoad(); }
    else if (message.event === 'devices.discovered') { (data.devices || []).forEach(updateDevice); renderAll(); scheduleControlPlanLoad(); }
    else if (message.event === 'zone.updated') { const i = app.zones.findIndex(v => v.id === data.id); if (i >= 0) app.zones[i] = data; else app.zones.push(data); renderSummary(); renderHouseClimate(); renderZones(); renderDevices(); renderGroups(); scheduleControlPlanLoad(); }
    else if (message.event === 'zone.created') { const i = app.zones.findIndex(v => v.id === data.id); if (i >= 0) app.zones[i] = data; else app.zones.push(data); renderSummary(); renderHouseClimate(); renderZones(); renderDevices(); renderGroups(); fillSelects(); scheduleControlPlanLoad(); }
    else if (message.event === 'zone.deleted') { app.zones = app.zones.filter(v => v.id !== data.id); renderAll(); scheduleControlPlanLoad(); }
    else if (['group.updated', 'group.created'].includes(message.event)) { const i = app.groups.findIndex(v => v.id === data.id); if (i >= 0) app.groups[i] = data; else app.groups.push(data); renderGroups(); fillSelects(); scheduleControlPlanLoad(); }
    else if (message.event === 'group.deleted') { app.groups = app.groups.filter(v => v.id !== data.id); renderGroups(); fillSelects(); scheduleControlPlanLoad(); }
    else if (['schedule.updated', 'schedule.created'].includes(message.event)) { const i = app.schedules.findIndex(v => v.id === data.id); if (i >= 0) app.schedules[i] = data; else app.schedules.push(data); renderSchedules(); fillSelects(); scheduleControlPlanLoad(); }
    else if (message.event === 'schedule.deleted') { app.schedules = app.schedules.filter(v => v.id !== data.id); renderSchedules(); fillSelects(); scheduleControlPlanLoad(); }
    else if (message.event === 'schedule.template_applied') { try { app.schedules = await api('/api/schedules'); renderSchedules(); fillSelects(); } catch (_) { } scheduleControlPlanLoad(); }
    else if (['automation.updated', 'automation.created'].includes(message.event)) { const i = app.automations.findIndex(v => v.id === data.id); if (i >= 0) app.automations[i] = data; else app.automations.push(data); renderAutomations(); fillSelects(); scheduleControlPlanLoad(); }
    else if (message.event === 'automation.deleted') { app.automations = app.automations.filter(v => v.id !== data.id); renderAutomations(); fillSelects(); scheduleControlPlanLoad(); }
    else if (['flow.updated', 'flow.created'].includes(message.event)) { const i = app.flows.findIndex(v => v.id === data.id); if (i >= 0) app.flows[i] = data; else app.flows.push(data); renderFlows(); scheduleControlPlanLoad(); }
    else if (message.event === 'flow.deleted') { app.flows = app.flows.filter(v => v.id !== data.id); renderFlows(); scheduleControlPlanLoad(); }
    else if (message.event === 'settings.application.updated') { applySettingsSection('application', data); if (!isFormDirty($('#settingsForm'))) renderSettings(); renderSimulationModeBanner(); renderSystemInfo(); }
    else if (message.event === 'settings.gree.updated') { applySettingsSection('gree', data); if (!isFormDirty($('#settingsForm'))) renderSettings(); scheduleControlPlanLoad(); }
    else if (message.event === 'settings.gree_cloud.updated') { applySettingsSection('greeCloud', data); if (!isFormDirty($('#settingsForm'))) renderSettings(); }
    else if (message.event === 'settings.history.updated') { applySettingsSection('history', data); if (!isFormDirty($('#settingsForm'))) renderSettings(); renderLogRetention(); }
    else if (message.event === 'settings.influxdb.updated') { applySettingsSection('influxdb', data); if (!isFormDirty($('#settingsForm'))) renderSettings(); }
    else if (message.event === 'settings.notifications.updated') { applySettingsSection('notifications', data); if (!isFormDirty($('#settingsForm'))) renderSettings(); }
    else if (message.event === 'settings.debug.updated') { applySettingsSection('debug', data); if (!isFormDirty($('#settingsForm'))) renderSettings(); renderDebugOverlay(); if (data.overlay_enabled) loadDebugBacklog(); }
    else if (message.event === 'settings.night.updated') { applySettingsSection('night', data); if (!isFormDirty($('#nightModeForm'))) renderNightSettings(); renderHouseClimate(); scheduleControlPlanLoad(); }
    else if (message.event === 'settings.home_assistant.updated') {
      applySettingsSection('homeAssistant', data);
      if (!isFormDirty($('#homeAssistantForm'))) { app.sensorAliases = { ...(data.sensor_aliases || {}) }; app.flowSharedInputs = JSON.parse(JSON.stringify(data.flow_inputs || [])); renderHomeAssistantSettings(); }
      renderHouseClimate(); if (app.flowDraft) renderFlowEditor(); scheduleControlPlanLoad();
    }
    else if (message.event === 'house.mode_changed') { app.settings = app.settings || {}; app.settings.house_mode = data.mode || 'cool'; renderHouseClimate(); renderGroups(); scheduleControlPlanLoad(); }
    else if (message.event === 'outdoor.updated') { app.outdoorTemperature = Number.isFinite(Number(data.temperature)) ? Number(data.temperature) : null; renderHouseClimate(); scheduleControlPlanLoad(); }
    else if (message.event === 'configuration.imported') { await loadBootstrap(); return; }
    else if (message.event === 'gree.frame_received') {
      app.system = app.system || {};
      app.system.gree_received_frames = Number(data.total || 0);
      app.system.gree_received_frames_by_device = { ...(app.system.gree_received_frames_by_device || {}) };
      if (data.device_id) app.system.gree_received_frames_by_device[data.device_id] = Number(data.device_count || 0);
      renderGreeFrameStats();
      renderSystemInfo();
    }
    else if (message.event === 'gree.frame') { if (app.settings?.debug?.overlay_enabled) debugLine('GREE', `${data.direction || '?'} ${data.protocol_version || ''}`, data.device_name || data.device_id || data.target || '', message.timestamp, data.payload); }
    else if (message.event === 'gree_cloud.request') { if (app.settings?.debug?.overlay_enabled) debugLine('CLOUD', `${data.operation || 'request'} · ${data.phase || '?'}`, `${data.device_name || data.device_id || data.transport || ''}${data.duration_ms == null ? '' : ` · ${data.duration_ms} ms`}`, message.timestamp, data); }
    else if (message.event === 'gree_cloud.mqtt') { if (app.settings?.debug?.overlay_enabled) debugLine('MQTT', `${data.direction || '?'}`, `${data.topic || data.broker || ''}${data.device_id ? ` · ${data.device_id}` : ''}`, message.timestamp, data); }
    else if (message.event === 'api.request') { if (app.settings?.debug?.overlay_enabled) debugLine('HTTP', `${data.method || '?'} ${data.status || ''}`, `${data.path || ''} · ${data.duration_ms ?? '?'} ms`, message.timestamp); }
    else if (message.event === 'log.created') { if (app.settings?.debug?.overlay_enabled) debugLine('API', data.kind || data.level || 'log', data.message || '', message.timestamp, data.metadata); if (app.currentView === 'logs') loadLogs(); }
    else if (message.event === 'log.updated') { if (app.currentView === 'logs') loadLogs(); }
  } catch (_) { }
}

function connectWebSocket() {
  if (app.ws && [WebSocket.OPEN, WebSocket.CONNECTING].includes(app.ws.readyState)) return;
  clearTimeout(app.wsTimer);
  const protocol = location.protocol === 'https:' ? 'wss:' : 'ws:';
  const query = app.token ? `?token=${encodeURIComponent(app.token)}` : '';
  const ws = new WebSocket(`${protocol}//${location.host}${withBase('/ws')}${query}`); app.ws = ws;
  ws.onopen = () => updateConnectionIndicator('connected');
  ws.onclose = () => { app.controlPlanPushReady = false; updateConnectionIndicator('disconnected'); scheduleControlPlanLoad(0); app.wsTimer = setTimeout(connectWebSocket, 3000); };
  ws.onerror = () => updateConnectionIndicator('connectionError');
  let messageQueue = Promise.resolve();
  ws.onmessage = event => {
    messageQueue = messageQueue.then(() => handleWebSocketMessage(event)).catch(() => { });
  };
}