import { useQuery, useMutation, useQueryClient } from '@tanstack/react-query';
import { Loader2, Plus, Plug, AlertTriangle, RotateCcw, Bell, Download, RefreshCw, ExternalLink, Globe, Droplets, Thermometer, FileText, Edit2, Send, CheckCircle, XCircle, History, Trash2, Upload, Zap, TrendingUp, Calendar, DollarSign, Power, PowerOff, Key, Copy, Database } from 'lucide-react';
import { useTranslation } from 'react-i18next';
import { api } from '../api/client';
import type { AppSettings, SmartPlug, SmartPlugStatus, NotificationProvider, NotificationTemplate, UpdateStatus } from '../api/client';
import { Card, CardContent, CardHeader } from '../components/Card';
import { Button } from '../components/Button';
import { SmartPlugCard } from '../components/SmartPlugCard';
import { AddSmartPlugModal } from '../components/AddSmartPlugModal';
import { NotificationProviderCard } from '../components/NotificationProviderCard';
import { AddNotificationModal } from '../components/AddNotificationModal';
import { NotificationTemplateEditor } from '../components/NotificationTemplateEditor';
import { NotificationLogViewer } from '../components/NotificationLogViewer';
import { ConfirmModal } from '../components/ConfirmModal';
import { BackupModal } from '../components/BackupModal';
import { RestoreModal } from '../components/RestoreModal';
import { SpoolmanSettings } from '../components/SpoolmanSettings';
import { ExternalLinksSettings } from '../components/ExternalLinksSettings';
import { defaultNavItems, getDefaultView, setDefaultView } from '../components/Layout';
import { availableLanguages } from '../i18n';
import { useToast } from '../contexts/ToastContext';
import { useState, useEffect, useRef, useCallback } from 'react';

export function SettingsPage() {
  const queryClient = useQueryClient();
  const { t, i18n } = useTranslation();
  const { showToast } = useToast();
  const [localSettings, setLocalSettings] = useState<AppSettings | null>(null);
  const [showPlugModal, setShowPlugModal] = useState(false);
  const [editingPlug, setEditingPlug] = useState<SmartPlug | null>(null);
  const [showNotificationModal, setShowNotificationModal] = useState(false);
  const [editingProvider, setEditingProvider] = useState<NotificationProvider | null>(null);
  const [editingTemplate, setEditingTemplate] = useState<NotificationTemplate | null>(null);
  const [showLogViewer, setShowLogViewer] = useState(false);
  const [defaultView, setDefaultViewState] = useState<string>(getDefaultView());
  const [activeTab, setActiveTab] = useState<'general' | 'plugs' | 'notifications' | 'apikeys'>('general');
  const [showCreateAPIKey, setShowCreateAPIKey] = useState(false);
  const [newAPIKeyName, setNewAPIKeyName] = useState('');
  const [newAPIKeyPermissions, setNewAPIKeyPermissions] = useState({
    can_queue: true,
    can_control_printer: false,
    can_read_status: true,
  });
  const [createdAPIKey, setCreatedAPIKey] = useState<string | null>(null);
  const [showDeleteAPIKeyConfirm, setShowDeleteAPIKeyConfirm] = useState<number | null>(null);

  // Confirm modal states
  const [showClearLogsConfirm, setShowClearLogsConfirm] = useState(false);
  const [showClearStorageConfirm, setShowClearStorageConfirm] = useState(false);
  const [showBulkPlugConfirm, setShowBulkPlugConfirm] = useState<'on' | 'off' | null>(null);
  const [showBackupModal, setShowBackupModal] = useState(false);
  const [showRestoreModal, setShowRestoreModal] = useState(false);

  const handleDefaultViewChange = (path: string) => {
    setDefaultViewState(path);
    setDefaultView(path);
  };

  const handleResetSidebarOrder = () => {
    localStorage.removeItem('sidebarOrder');
    window.location.reload();
  };

  const { data: settings, isLoading } = useQuery({
    queryKey: ['settings'],
    queryFn: api.getSettings,
  });

  const { data: smartPlugs, isLoading: plugsLoading } = useQuery({
    queryKey: ['smart-plugs'],
    queryFn: api.getSmartPlugs,
  });

  // Fetch energy data for all smart plugs when on the plugs tab
  const { data: plugEnergySummary, isLoading: energyLoading } = useQuery({
    queryKey: ['smart-plugs-energy', smartPlugs?.map(p => p.id)],
    queryFn: async () => {
      if (!smartPlugs || smartPlugs.length === 0) return null;
      const statuses = await Promise.all(
        smartPlugs.filter(p => p.enabled).map(async (plug) => {
          try {
            const status = await api.getSmartPlugStatus(plug.id);
            return { plug, status };
          } catch {
            return { plug, status: null as SmartPlugStatus | null };
          }
        })
      );

      // Aggregate energy data
      let totalPower = 0;
      let totalToday = 0;
      let totalYesterday = 0;
      let totalLifetime = 0;
      let reachableCount = 0;

      for (const { status } of statuses) {
        if (status?.reachable && status.energy) {
          reachableCount++;
          if (status.energy.power != null) totalPower += status.energy.power;
          if (status.energy.today != null) totalToday += status.energy.today;
          if (status.energy.yesterday != null) totalYesterday += status.energy.yesterday;
          if (status.energy.total != null) totalLifetime += status.energy.total;
        }
      }

      return {
        totalPower,
        totalToday,
        totalYesterday,
        totalLifetime,
        reachableCount,
        totalPlugs: smartPlugs.filter(p => p.enabled).length,
      };
    },
    enabled: activeTab === 'plugs' && !!smartPlugs && smartPlugs.length > 0,
    refetchInterval: activeTab === 'plugs' ? 10000 : false, // Refresh every 10s when on plugs tab
  });

  const { data: notificationProviders, isLoading: providersLoading } = useQuery({
    queryKey: ['notification-providers'],
    queryFn: api.getNotificationProviders,
  });

  const { data: apiKeys, isLoading: apiKeysLoading } = useQuery({
    queryKey: ['api-keys'],
    queryFn: api.getAPIKeys,
    enabled: activeTab === 'apikeys',
  });

  const createAPIKeyMutation = useMutation({
    mutationFn: (data: { name: string; can_queue: boolean; can_control_printer: boolean; can_read_status: boolean }) =>
      api.createAPIKey(data),
    onSuccess: (data) => {
      setCreatedAPIKey(data.key || null);
      setShowCreateAPIKey(false);
      setNewAPIKeyName('');
      queryClient.invalidateQueries({ queryKey: ['api-keys'] });
      showToast('API key created');
    },
    onError: (error: Error) => {
      showToast(`Failed to create API key: ${error.message}`, 'error');
    },
  });

  const deleteAPIKeyMutation = useMutation({
    mutationFn: (id: number) => api.deleteAPIKey(id),
    onSuccess: () => {
      queryClient.invalidateQueries({ queryKey: ['api-keys'] });
      showToast('API key deleted');
    },
    onError: (error: Error) => {
      showToast(`Failed to delete API key: ${error.message}`, 'error');
    },
  });

  const { data: printers } = useQuery({
    queryKey: ['printers'],
    queryFn: api.getPrinters,
  });

  const { data: notificationTemplates, isLoading: templatesLoading } = useQuery({
    queryKey: ['notification-templates'],
    queryFn: api.getNotificationTemplates,
  });

  const { data: ffmpegStatus } = useQuery({
    queryKey: ['ffmpeg-status'],
    queryFn: api.checkFfmpeg,
  });

  const { data: versionInfo } = useQuery({
    queryKey: ['version'],
    queryFn: api.getVersion,
  });

  const { data: updateCheck, refetch: refetchUpdateCheck, isRefetching: isCheckingUpdate } = useQuery({
    queryKey: ['updateCheck'],
    queryFn: api.checkForUpdates,
    staleTime: 5 * 60 * 1000,
  });

  const { data: updateStatus, refetch: refetchUpdateStatus } = useQuery({
    queryKey: ['updateStatus'],
    queryFn: api.getUpdateStatus,
    refetchInterval: (query) => {
      const status = query.state.data as UpdateStatus | undefined;
      // Poll while update is in progress
      if (status?.status === 'downloading' || status?.status === 'installing') {
        return 1000;
      }
      return false;
    },
  });

  const applyUpdateMutation = useMutation({
    mutationFn: api.applyUpdate,
    onSuccess: () => {
      refetchUpdateStatus();
    },
  });

  // Test all notification providers
  const [testAllResult, setTestAllResult] = useState<{
    tested: number;
    success: number;
    failed: number;
    results: Array<{
      provider_id: number;
      provider_name: string;
      provider_type: string;
      success: boolean;
      message: string;
    }>;
  } | null>(null);

  const testAllMutation = useMutation({
    mutationFn: api.testAllNotificationProviders,
    onSuccess: (data) => {
      setTestAllResult(data);
      queryClient.invalidateQueries({ queryKey: ['notification-providers'] });
      if (data.failed === 0) {
        showToast(`All ${data.tested} providers tested successfully!`, 'success');
      } else {
        showToast(`${data.success}/${data.tested} providers succeeded`, data.failed > 0 ? 'error' : 'success');
      }
    },
    onError: (error: Error) => {
      showToast(`Failed to test providers: ${error.message}`, 'error');
    },
  });

  // Bulk action for smart plugs
  const bulkPlugActionMutation = useMutation({
    mutationFn: async (action: 'on' | 'off') => {
      if (!smartPlugs) return { success: 0, failed: 0 };
      const enabledPlugs = smartPlugs.filter(p => p.enabled);
      const results = await Promise.all(
        enabledPlugs.map(async (plug) => {
          try {
            await api.controlSmartPlug(plug.id, action);
            return { success: true };
          } catch {
            return { success: false };
          }
        })
      );
      return {
        success: results.filter(r => r.success).length,
        failed: results.filter(r => !r.success).length,
      };
    },
    onSuccess: (data, action) => {
      queryClient.invalidateQueries({ queryKey: ['smart-plugs'] });
      queryClient.invalidateQueries({ queryKey: ['smart-plugs-energy'] });
      if (data.failed === 0) {
        showToast(`All ${data.success} plugs turned ${action}`, 'success');
      } else {
        showToast(`${data.success} plugs turned ${action}, ${data.failed} failed`, 'error');
      }
    },
    onError: (error: Error) => {
      showToast(`Failed: ${error.message}`, 'error');
    },
  });

  // Ref for debounce timeout
  const saveTimeoutRef = useRef<ReturnType<typeof setTimeout> | null>(null);
  const isInitialLoadRef = useRef(true);

  // Sync local state when settings load
  useEffect(() => {
    if (settings && !localSettings) {
      setLocalSettings(settings);
      // Mark initial load complete after a short delay
      setTimeout(() => {
        isInitialLoadRef.current = false;
      }, 100);
    }
  }, [settings, localSettings]);

  const updateMutation = useMutation({
    mutationFn: api.updateSettings,
    onSuccess: (data) => {
      queryClient.setQueryData(['settings'], data);
      // Invalidate archive stats to reflect energy tracking mode change
      queryClient.invalidateQueries({ queryKey: ['archiveStats'] });
      showToast('Settings saved', 'success');
    },
    onError: (error: Error) => {
      showToast(`Failed to save: ${error.message}`, 'error');
    },
  });

  // Debounced auto-save when localSettings change
  useEffect(() => {
    // Skip if initial load or no settings
    if (isInitialLoadRef.current || !localSettings || !settings) {
      return;
    }

    // Check if there are actual changes
    const hasChanges =
      settings.auto_archive !== localSettings.auto_archive ||
      settings.save_thumbnails !== localSettings.save_thumbnails ||
      settings.capture_finish_photo !== localSettings.capture_finish_photo ||
      settings.default_filament_cost !== localSettings.default_filament_cost ||
      settings.currency !== localSettings.currency ||
      settings.energy_cost_per_kwh !== localSettings.energy_cost_per_kwh ||
      settings.energy_tracking_mode !== localSettings.energy_tracking_mode ||
      settings.check_updates !== localSettings.check_updates ||
      settings.notification_language !== localSettings.notification_language ||
      settings.ams_humidity_good !== localSettings.ams_humidity_good ||
      settings.ams_humidity_fair !== localSettings.ams_humidity_fair ||
      settings.ams_temp_good !== localSettings.ams_temp_good ||
      settings.ams_temp_fair !== localSettings.ams_temp_fair ||
      settings.ams_history_retention_days !== localSettings.ams_history_retention_days ||
      settings.date_format !== localSettings.date_format ||
      settings.time_format !== localSettings.time_format ||
      settings.default_printer_id !== localSettings.default_printer_id;

    if (!hasChanges) {
      return;
    }

    // Clear existing timeout
    if (saveTimeoutRef.current) {
      clearTimeout(saveTimeoutRef.current);
    }

    // Set new debounced save (500ms delay)
    saveTimeoutRef.current = setTimeout(() => {
      updateMutation.mutate(localSettings);
    }, 500);

    // Cleanup on unmount or when localSettings changes again
    return () => {
      if (saveTimeoutRef.current) {
        clearTimeout(saveTimeoutRef.current);
      }
    };
  }, [localSettings, settings, updateMutation]);

  const updateSetting = useCallback(<K extends keyof AppSettings>(key: K, value: AppSettings[K]) => {
    setLocalSettings(prev => prev ? { ...prev, [key]: value } : null);
  }, []);

  if (isLoading || !localSettings) {
    return (
      <div className="p-4 md:p-8 flex justify-center">
        <Loader2 className="w-8 h-8 text-bambu-green animate-spin" />
      </div>
    );
  }

  return (
    <div className="p-4 md:p-8">
      <div className="mb-8">
        <h1 className="text-2xl font-bold text-white">Settings</h1>
        <p className="text-bambu-gray">Configure Bambuddy</p>
      </div>

      {/* Tab Navigation */}
      <div className="flex gap-1 mb-6 border-b border-bambu-dark-tertiary">
        <button
          onClick={() => setActiveTab('general')}
          className={`px-4 py-2 text-sm font-medium transition-colors border-b-2 -mb-px ${
            activeTab === 'general'
              ? 'text-bambu-green border-bambu-green'
              : 'text-bambu-gray hover:text-white border-transparent'
          }`}
        >
          General
        </button>
        <button
          onClick={() => setActiveTab('plugs')}
          className={`px-4 py-2 text-sm font-medium transition-colors border-b-2 -mb-px flex items-center gap-2 ${
            activeTab === 'plugs'
              ? 'text-bambu-green border-bambu-green'
              : 'text-bambu-gray hover:text-white border-transparent'
          }`}
        >
          <Plug className="w-4 h-4" />
          Smart Plugs
          {smartPlugs && smartPlugs.length > 0 && (
            <span className="text-xs bg-bambu-dark-tertiary px-1.5 py-0.5 rounded-full">
              {smartPlugs.length}
            </span>
          )}
        </button>
        <button
          onClick={() => setActiveTab('notifications')}
          className={`px-4 py-2 text-sm font-medium transition-colors border-b-2 -mb-px flex items-center gap-2 ${
            activeTab === 'notifications'
              ? 'text-bambu-green border-bambu-green'
              : 'text-bambu-gray hover:text-white border-transparent'
          }`}
        >
          <Bell className="w-4 h-4" />
          Notifications
          {notificationProviders && notificationProviders.length > 0 && (
            <span className="text-xs bg-bambu-dark-tertiary px-1.5 py-0.5 rounded-full">
              {notificationProviders.length}
            </span>
          )}
        </button>
        <button
          onClick={() => setActiveTab('apikeys')}
          className={`px-4 py-2 text-sm font-medium transition-colors border-b-2 -mb-px flex items-center gap-2 ${
            activeTab === 'apikeys'
              ? 'text-bambu-green border-bambu-green'
              : 'text-bambu-gray hover:text-white border-transparent'
          }`}
        >
          <Key className="w-4 h-4" />
          API Keys
          {apiKeys && apiKeys.length > 0 && (
            <span className="text-xs bg-bambu-dark-tertiary px-1.5 py-0.5 rounded-full">
              {apiKeys.length}
            </span>
          )}
        </button>
      </div>

      {/* General Tab */}
      {activeTab === 'general' && (
      <div className="flex flex-col lg:flex-row gap-6 lg:gap-8">
        {/* Left Column - General Settings */}
        <div className="space-y-6 flex-1 lg:max-w-xl">
          <Card>
            <CardHeader>
              <h2 className="text-lg font-semibold text-white">{t('settings.general')}</h2>
            </CardHeader>
            <CardContent className="space-y-4">
              <div>
                <label className="block text-sm text-bambu-gray mb-1">
                  <Globe className="w-4 h-4 inline mr-1" />
                  {t('settings.language')}
                </label>
                <select
                  value={i18n.language}
                  onChange={(e) => i18n.changeLanguage(e.target.value)}
                  className="w-full px-3 py-2 bg-bambu-dark border border-bambu-dark-tertiary rounded-lg text-white focus:border-bambu-green focus:outline-none"
                >
                  {availableLanguages.map((lang) => (
                    <option key={lang.code} value={lang.code}>
                      {lang.nativeName} ({lang.name})
                    </option>
                  ))}
                </select>
                <p className="text-xs text-bambu-gray mt-1">
                  {t('settings.languageDescription')}
                </p>
              </div>
              <div>
                <label className="block text-sm text-bambu-gray mb-1">
                  {t('settings.defaultView')}
                </label>
                <select
                  value={defaultView}
                  onChange={(e) => handleDefaultViewChange(e.target.value)}
                  className="w-full px-3 py-2 bg-bambu-dark border border-bambu-dark-tertiary rounded-lg text-white focus:border-bambu-green focus:outline-none"
                >
                  {defaultNavItems.map((item) => (
                    <option key={item.id} value={item.to}>
                      {t(item.labelKey)}
                    </option>
                  ))}
                </select>
                <p className="text-xs text-bambu-gray mt-1">
                  {t('settings.defaultViewDescription')}
                </p>
              </div>
              <div className="grid grid-cols-2 gap-3">
                <div>
                  <label className="block text-sm text-bambu-gray mb-1">
                    Date Format
                  </label>
                  <select
                    value={localSettings.date_format || 'system'}
                    onChange={(e) => updateSetting('date_format', e.target.value as 'system' | 'us' | 'eu' | 'iso')}
                    className="w-full px-3 py-2 bg-bambu-dark border border-bambu-dark-tertiary rounded-lg text-white focus:border-bambu-green focus:outline-none"
                  >
                    <option value="system">System Default</option>
                    <option value="us">US (MM/DD/YYYY)</option>
                    <option value="eu">EU (DD/MM/YYYY)</option>
                    <option value="iso">ISO (YYYY-MM-DD)</option>
                  </select>
                </div>
                <div>
                  <label className="block text-sm text-bambu-gray mb-1">
                    Time Format
                  </label>
                  <select
                    value={localSettings.time_format || 'system'}
                    onChange={(e) => updateSetting('time_format', e.target.value as 'system' | '12h' | '24h')}
                    className="w-full px-3 py-2 bg-bambu-dark border border-bambu-dark-tertiary rounded-lg text-white focus:border-bambu-green focus:outline-none"
                  >
                    <option value="system">System Default</option>
                    <option value="12h">12-hour (3:30 PM)</option>
                    <option value="24h">24-hour (15:30)</option>
                  </select>
                </div>
              </div>
              <div>
                <label className="block text-sm text-bambu-gray mb-1">
                  Default Printer
                </label>
                <select
                  value={localSettings.default_printer_id ?? ''}
                  onChange={(e) => updateSetting('default_printer_id', e.target.value ? Number(e.target.value) : null)}
                  className="w-full px-3 py-2 bg-bambu-dark border border-bambu-dark-tertiary rounded-lg text-white focus:border-bambu-green focus:outline-none"
                >
                  <option value="">No default (ask each time)</option>
                  {printers?.map((printer) => (
                    <option key={printer.id} value={printer.id}>
                      {printer.name}
                    </option>
                  ))}
                </select>
                <p className="text-xs text-bambu-gray mt-1">
                  Pre-select this printer for uploads, reprints, and other operations.
                </p>
              </div>
              <div className="flex items-center justify-between">
                <div>
                  <p className="text-white">Sidebar order</p>
                  <p className="text-sm text-bambu-gray">
                    Drag items in the sidebar to reorder. Reset to default order here.
                  </p>
                </div>
                <Button
                  variant="secondary"
                  size="sm"
                  onClick={handleResetSidebarOrder}
                >
                  <RotateCcw className="w-4 h-4" />
                  Reset
                </Button>
              </div>
            </CardContent>
          </Card>

          <Card>
            <CardHeader>
              <h2 className="text-lg font-semibold text-white">Archive Settings</h2>
            </CardHeader>
            <CardContent className="space-y-4">
              <div className="flex items-center justify-between">
                <div>
                  <p className="text-white">Auto-archive prints</p>
                  <p className="text-sm text-bambu-gray">
                    Automatically save 3MF files when prints complete
                  </p>
                </div>
                <label className="relative inline-flex items-center cursor-pointer">
                  <input
                    type="checkbox"
                    checked={localSettings.auto_archive}
                    onChange={(e) => updateSetting('auto_archive', e.target.checked)}
                    className="sr-only peer"
                  />
                  <div className="w-11 h-6 bg-bambu-dark-tertiary peer-focus:outline-none rounded-full peer peer-checked:after:translate-x-full peer-checked:after:border-white after:content-[''] after:absolute after:top-[2px] after:left-[2px] after:bg-white after:rounded-full after:h-5 after:w-5 after:transition-all peer-checked:bg-bambu-green"></div>
                </label>
              </div>
              <div className="flex items-center justify-between">
                <div>
                  <p className="text-white">Save thumbnails</p>
                  <p className="text-sm text-bambu-gray">
                    Extract and save preview images from 3MF files
                  </p>
                </div>
                <label className="relative inline-flex items-center cursor-pointer">
                  <input
                    type="checkbox"
                    checked={localSettings.save_thumbnails}
                    onChange={(e) => updateSetting('save_thumbnails', e.target.checked)}
                    className="sr-only peer"
                  />
                  <div className="w-11 h-6 bg-bambu-dark-tertiary peer-focus:outline-none rounded-full peer peer-checked:after:translate-x-full peer-checked:after:border-white after:content-[''] after:absolute after:top-[2px] after:left-[2px] after:bg-white after:rounded-full after:h-5 after:w-5 after:transition-all peer-checked:bg-bambu-green"></div>
                </label>
              </div>
              <div className="flex items-center justify-between">
                <div>
                  <p className="text-white">Capture finish photo</p>
                  <p className="text-sm text-bambu-gray">
                    Take a photo from printer camera when print completes
                  </p>
                </div>
                <label className="relative inline-flex items-center cursor-pointer">
                  <input
                    type="checkbox"
                    checked={localSettings.capture_finish_photo}
                    onChange={(e) => updateSetting('capture_finish_photo', e.target.checked)}
                    className="sr-only peer"
                  />
                  <div className="w-11 h-6 bg-bambu-dark-tertiary peer-focus:outline-none rounded-full peer peer-checked:after:translate-x-full peer-checked:after:border-white after:content-[''] after:absolute after:top-[2px] after:left-[2px] after:bg-white after:rounded-full after:h-5 after:w-5 after:transition-all peer-checked:bg-bambu-green"></div>
                </label>
              </div>
              {localSettings.capture_finish_photo && ffmpegStatus && !ffmpegStatus.installed && (
                <div className="flex items-start gap-2 p-3 bg-yellow-500/10 border border-yellow-500/30 rounded-lg">
                  <AlertTriangle className="w-5 h-5 text-yellow-500 flex-shrink-0 mt-0.5" />
                  <div className="text-sm">
                    <p className="text-yellow-500 font-medium">ffmpeg not installed</p>
                    <p className="text-bambu-gray mt-1">
                      Camera capture requires ffmpeg. Install it via{' '}
                      <code className="bg-bambu-dark-tertiary px-1 rounded">brew install ffmpeg</code> (macOS) or{' '}
                      <code className="bg-bambu-dark-tertiary px-1 rounded">apt install ffmpeg</code> (Linux).
                    </p>
                  </div>
                </div>
              )}
            </CardContent>
          </Card>

          <Card>
            <CardHeader>
              <h2 className="text-lg font-semibold text-white">Cost Tracking</h2>
            </CardHeader>
            <CardContent className="space-y-4">
              <div>
                <label className="block text-sm text-bambu-gray mb-1">
                  Default filament cost (per kg)
                </label>
                <input
                  type="number"
                  step="0.01"
                  min="0"
                  value={localSettings.default_filament_cost}
                  onChange={(e) =>
                    updateSetting('default_filament_cost', parseFloat(e.target.value) || 0)
                  }
                  className="w-full px-3 py-2 bg-bambu-dark border border-bambu-dark-tertiary rounded-lg text-white focus:border-bambu-green focus:outline-none"
                />
              </div>
              <div>
                <label className="block text-sm text-bambu-gray mb-1">Currency</label>
                <select
                  value={localSettings.currency}
                  onChange={(e) => updateSetting('currency', e.target.value)}
                  className="w-full px-3 py-2 bg-bambu-dark border border-bambu-dark-tertiary rounded-lg text-white focus:border-bambu-green focus:outline-none"
                >
                  <option value="USD">USD ($)</option>
                  <option value="EUR">EUR (€)</option>
                  <option value="GBP">GBP (£)</option>
                  <option value="CHF">CHF (Fr.)</option>
                  <option value="JPY">JPY (¥)</option>
                  <option value="CNY">CNY (¥)</option>
                  <option value="CAD">CAD ($)</option>
                  <option value="AUD">AUD ($)</option>
                </select>
              </div>
              <div>
                <label className="block text-sm text-bambu-gray mb-1">
                  Electricity cost per kWh
                </label>
                <input
                  type="number"
                  step="0.01"
                  min="0"
                  value={localSettings.energy_cost_per_kwh}
                  onChange={(e) =>
                    updateSetting('energy_cost_per_kwh', parseFloat(e.target.value) || 0)
                  }
                  className="w-full px-3 py-2 bg-bambu-dark border border-bambu-dark-tertiary rounded-lg text-white focus:border-bambu-green focus:outline-none"
                />
              </div>
              <div>
                <label className="block text-sm text-bambu-gray mb-1">
                  Energy display mode
                </label>
                <select
                  value={localSettings.energy_tracking_mode || 'total'}
                  onChange={(e) => updateSetting('energy_tracking_mode', e.target.value as 'print' | 'total')}
                  className="w-full px-3 py-2 bg-bambu-dark border border-bambu-dark-tertiary rounded-lg text-white focus:border-bambu-green focus:outline-none"
                >
                  <option value="print">Prints Only</option>
                  <option value="total">Total Consumption</option>
                </select>
                <p className="text-xs text-bambu-gray mt-1">
                  {localSettings.energy_tracking_mode === 'print'
                    ? 'Dashboard shows sum of energy used during prints'
                    : 'Dashboard shows lifetime energy from smart plugs'}
                </p>
              </div>
            </CardContent>
          </Card>
        </div>

        {/* Second Column - AMS & Spoolman */}
        <div className="space-y-6 flex-1 lg:max-w-md">
          <Card>
            <CardHeader>
              <h2 className="text-lg font-semibold text-white">AMS Display Thresholds</h2>
            </CardHeader>
            <CardContent className="space-y-4">
              <p className="text-sm text-bambu-gray">
                Configure color thresholds for AMS humidity and temperature indicators.
              </p>

              {/* Humidity Thresholds */}
              <div className="space-y-3">
                <div className="flex items-center gap-2 text-white">
                  <Droplets className="w-4 h-4 text-blue-400" />
                  <span className="font-medium">Humidity</span>
                </div>
                <div className="grid grid-cols-2 gap-3">
                  <div>
                    <label className="block text-sm text-bambu-gray mb-1">
                      Good (green) ≤
                    </label>
                    <div className="flex items-center gap-2">
                      <input
                        type="number"
                        min="0"
                        max="100"
                        value={localSettings.ams_humidity_good ?? 40}
                        onChange={(e) => updateSetting('ams_humidity_good', parseInt(e.target.value) || 40)}
                        className="w-full px-3 py-2 bg-bambu-dark border border-bambu-dark-tertiary rounded-lg text-white focus:border-bambu-green focus:outline-none"
                      />
                      <span className="text-bambu-gray">%</span>
                    </div>
                  </div>
                  <div>
                    <label className="block text-sm text-bambu-gray mb-1">
                      Fair (orange) ≤
                    </label>
                    <div className="flex items-center gap-2">
                      <input
                        type="number"
                        min="0"
                        max="100"
                        value={localSettings.ams_humidity_fair ?? 60}
                        onChange={(e) => updateSetting('ams_humidity_fair', parseInt(e.target.value) || 60)}
                        className="w-full px-3 py-2 bg-bambu-dark border border-bambu-dark-tertiary rounded-lg text-white focus:border-bambu-green focus:outline-none"
                      />
                      <span className="text-bambu-gray">%</span>
                    </div>
                  </div>
                </div>
                <p className="text-xs text-bambu-gray">
                  Above fair threshold shows as red (bad)
                </p>
              </div>

              {/* Temperature Thresholds */}
              <div className="space-y-3 pt-2 border-t border-bambu-dark-tertiary">
                <div className="flex items-center gap-2 text-white">
                  <Thermometer className="w-4 h-4 text-orange-400" />
                  <span className="font-medium">Temperature</span>
                </div>
                <div className="grid grid-cols-2 gap-3">
                  <div>
                    <label className="block text-sm text-bambu-gray mb-1">
                      Good (blue) ≤
                    </label>
                    <div className="flex items-center gap-2">
                      <input
                        type="number"
                        step="0.5"
                        min="0"
                        max="60"
                        value={localSettings.ams_temp_good ?? 28}
                        onChange={(e) => updateSetting('ams_temp_good', parseFloat(e.target.value) || 28)}
                        className="w-full px-3 py-2 bg-bambu-dark border border-bambu-dark-tertiary rounded-lg text-white focus:border-bambu-green focus:outline-none"
                      />
                      <span className="text-bambu-gray">°C</span>
                    </div>
                  </div>
                  <div>
                    <label className="block text-sm text-bambu-gray mb-1">
                      Fair (orange) ≤
                    </label>
                    <div className="flex items-center gap-2">
                      <input
                        type="number"
                        step="0.5"
                        min="0"
                        max="60"
                        value={localSettings.ams_temp_fair ?? 35}
                        onChange={(e) => updateSetting('ams_temp_fair', parseFloat(e.target.value) || 35)}
                        className="w-full px-3 py-2 bg-bambu-dark border border-bambu-dark-tertiary rounded-lg text-white focus:border-bambu-green focus:outline-none"
                      />
                      <span className="text-bambu-gray">°C</span>
                    </div>
                  </div>
                </div>
                <p className="text-xs text-bambu-gray">
                  Above fair threshold shows as red (hot)
                </p>
              </div>

              {/* History Retention */}
              <div className="space-y-3 pt-4 border-t border-bambu-dark-tertiary">
                <div className="flex items-center gap-2 text-white">
                  <Database className="w-4 h-4 text-purple-400" />
                  <span className="font-medium">History Retention</span>
                </div>
                <div>
                  <label className="block text-sm text-bambu-gray mb-1">
                    Keep sensor history for
                  </label>
                  <div className="flex items-center gap-2">
                    <input
                      type="number"
                      min="1"
                      max="365"
                      value={localSettings.ams_history_retention_days ?? 30}
                      onChange={(e) => updateSetting('ams_history_retention_days', parseInt(e.target.value) || 30)}
                      className="w-24 px-3 py-2 bg-bambu-dark border border-bambu-dark-tertiary rounded-lg text-white focus:border-bambu-green focus:outline-none"
                    />
                    <span className="text-bambu-gray">days</span>
                  </div>
                </div>
                <p className="text-xs text-bambu-gray">
                  Older humidity and temperature data will be automatically deleted
                </p>
              </div>
            </CardContent>
          </Card>

          <SpoolmanSettings />

          <ExternalLinksSettings />
        </div>

        {/* Third Column - Updates */}
        <div className="space-y-6 flex-1 lg:max-w-sm">
          <Card>
            <CardHeader>
              <h2 className="text-lg font-semibold text-white">Updates</h2>
            </CardHeader>
            <CardContent className="space-y-4">
              <div className="flex items-center justify-between">
                <div>
                  <p className="text-white">Check for updates</p>
                  <p className="text-sm text-bambu-gray">
                    Automatically check for new versions on startup
                  </p>
                </div>
                <label className="relative inline-flex items-center cursor-pointer">
                  <input
                    type="checkbox"
                    checked={localSettings.check_updates}
                    onChange={(e) => updateSetting('check_updates', e.target.checked)}
                    className="sr-only peer"
                  />
                  <div className="w-11 h-6 bg-bambu-dark-tertiary peer-focus:outline-none rounded-full peer peer-checked:after:translate-x-full peer-checked:after:border-white after:content-[''] after:absolute after:top-[2px] after:left-[2px] after:bg-white after:rounded-full after:h-5 after:w-5 after:transition-all peer-checked:bg-bambu-green"></div>
                </label>
              </div>

              <div className="border-t border-bambu-dark-tertiary pt-4">
                <div className="flex items-center justify-between mb-2">
                  <div>
                    <p className="text-white">Current version</p>
                    <p className="text-sm text-bambu-gray">v{versionInfo?.version || '...'}</p>
                  </div>
                  <Button
                    variant="secondary"
                    size="sm"
                    onClick={() => refetchUpdateCheck()}
                    disabled={isCheckingUpdate}
                  >
                    {isCheckingUpdate ? (
                      <Loader2 className="w-4 h-4 animate-spin" />
                    ) : (
                      <RefreshCw className="w-4 h-4" />
                    )}
                    Check now
                  </Button>
                </div>

                {updateCheck?.update_available ? (
                  <div className="mt-4 p-3 bg-bambu-green/10 border border-bambu-green/30 rounded-lg">
                    <div className="flex items-start justify-between">
                      <div>
                        <p className="text-bambu-green font-medium">
                          Update available: v{updateCheck.latest_version}
                        </p>
                        {updateCheck.release_name && updateCheck.release_name !== updateCheck.latest_version && (
                          <p className="text-sm text-bambu-gray mt-1">{updateCheck.release_name}</p>
                        )}
                        {updateCheck.release_notes && (
                          <p className="text-sm text-bambu-gray mt-2 whitespace-pre-line line-clamp-3">
                            {updateCheck.release_notes}
                          </p>
                        )}
                      </div>
                      {updateCheck.release_url && (
                        <a
                          href={updateCheck.release_url}
                          target="_blank"
                          rel="noopener noreferrer"
                          className="text-bambu-gray hover:text-white transition-colors"
                          title="View release on GitHub"
                        >
                          <ExternalLink className="w-4 h-4" />
                        </a>
                      )}
                    </div>

                    {updateStatus?.status === 'downloading' || updateStatus?.status === 'installing' ? (
                      <div className="mt-3">
                        <div className="flex items-center gap-2 text-sm text-bambu-gray">
                          <Loader2 className="w-4 h-4 animate-spin" />
                          <span>{updateStatus.message}</span>
                        </div>
                        <div className="mt-2 w-full bg-bambu-dark-tertiary rounded-full h-2">
                          <div
                            className="bg-bambu-green h-2 rounded-full transition-all duration-300"
                            style={{ width: `${updateStatus.progress}%` }}
                          />
                        </div>
                      </div>
                    ) : updateStatus?.status === 'complete' ? (
                      <div className="mt-3 p-2 bg-bambu-green/20 rounded text-sm text-bambu-green">
                        {updateStatus.message}
                      </div>
                    ) : updateStatus?.status === 'error' ? (
                      <div className="mt-3 p-2 bg-red-500/20 rounded text-sm text-red-400">
                        {updateStatus.error || updateStatus.message}
                      </div>
                    ) : (
                      <Button
                        className="mt-3"
                        onClick={() => applyUpdateMutation.mutate()}
                        disabled={applyUpdateMutation.isPending}
                      >
                        {applyUpdateMutation.isPending ? (
                          <Loader2 className="w-4 h-4 animate-spin" />
                        ) : (
                          <Download className="w-4 h-4" />
                        )}
                        Install Update
                      </Button>
                    )}
                  </div>
                ) : updateCheck?.error ? (
                  <div className="mt-2 p-2 bg-red-500/10 border border-red-500/30 rounded text-sm text-red-400">
                    Failed to check for updates: {updateCheck.error}
                  </div>
                ) : updateCheck && !updateCheck.update_available ? (
                  <p className="mt-2 text-sm text-bambu-gray">
                    You're running the latest version
                  </p>
                ) : null}
              </div>
            </CardContent>
          </Card>

          {/* Data Management */}
          <Card>
            <CardHeader>
              <h2 className="text-lg font-semibold text-white">Data Management</h2>
            </CardHeader>
            <CardContent className="space-y-4">
              {/* Backup/Restore */}
              <div className="flex items-center justify-between">
                <div>
                  <p className="text-white">Backup Data</p>
                  <p className="text-sm text-bambu-gray">
                    Export settings, providers, printers, and more
                  </p>
                </div>
                <Button
                  variant="secondary"
                  size="sm"
                  onClick={() => setShowBackupModal(true)}
                >
                  <Download className="w-4 h-4" />
                  Export
                </Button>
              </div>
              <div className="flex items-center justify-between">
                <div>
                  <p className="text-white">Restore Backup</p>
                  <p className="text-sm text-bambu-gray">
                    Import settings from a backup file with duplicate handling options
                  </p>
                </div>
                <Button
                  variant="secondary"
                  size="sm"
                  onClick={() => setShowRestoreModal(true)}
                >
                  <Upload className="w-4 h-4" />
                  Restore
                </Button>
              </div>

              <div className="border-t border-bambu-dark-tertiary pt-4">
                <div className="flex items-center justify-between">
                  <div>
                    <p className="text-white">Clear Notification Logs</p>
                    <p className="text-sm text-bambu-gray">
                      Delete notification logs older than 30 days
                    </p>
                  </div>
                  <Button
                    variant="secondary"
                    size="sm"
                    onClick={() => setShowClearLogsConfirm(true)}
                  >
                    <Trash2 className="w-4 h-4" />
                    Clear
                  </Button>
                </div>
              </div>
              <div className="flex items-center justify-between">
                <div>
                  <p className="text-white">Reset UI Preferences</p>
                  <p className="text-sm text-bambu-gray">
                    Reset sidebar order, theme, view modes, and layout preferences. Printers, archives, and settings are not affected.
                  </p>
                </div>
                <Button
                  variant="secondary"
                  size="sm"
                  onClick={() => setShowClearStorageConfirm(true)}
                >
                  <Trash2 className="w-4 h-4" />
                  Reset
                </Button>
              </div>
            </CardContent>
          </Card>
        </div>
      </div>
      )}

      {/* Smart Plugs Tab */}
      {activeTab === 'plugs' && (
        <div className="max-w-4xl">
          <div className="flex items-start justify-between mb-6">
            <div>
              <h2 className="text-lg font-semibold text-white flex items-center gap-2">
                <Plug className="w-5 h-5 text-bambu-green" />
                Smart Plugs
              </h2>
              <p className="text-sm text-bambu-gray mt-1">
                Connect Tasmota-based smart plugs to automate power control and track energy usage for your printers.
              </p>
            </div>
            <div className="flex items-center gap-2 pt-1 shrink-0">
              {smartPlugs && smartPlugs.filter(p => p.enabled).length > 1 && (
                <>
                  <Button
                    variant="secondary"
                    size="sm"
                    className="whitespace-nowrap"
                    onClick={() => setShowBulkPlugConfirm('on')}
                    disabled={bulkPlugActionMutation.isPending}
                    title="Turn all plugs on"
                  >
                    {bulkPlugActionMutation.isPending ? (
                      <Loader2 className="w-4 h-4 animate-spin" />
                    ) : (
                      <Power className="w-4 h-4 text-bambu-green" />
                    )}
                    All On
                  </Button>
                  <Button
                    variant="secondary"
                    size="sm"
                    className="whitespace-nowrap"
                    onClick={() => setShowBulkPlugConfirm('off')}
                    disabled={bulkPlugActionMutation.isPending}
                    title="Turn all plugs off"
                  >
                    {bulkPlugActionMutation.isPending ? (
                      <Loader2 className="w-4 h-4 animate-spin" />
                    ) : (
                      <PowerOff className="w-4 h-4 text-red-400" />
                    )}
                    All Off
                  </Button>
                </>
              )}
              <Button
                className="whitespace-nowrap"
                onClick={() => {
                  setEditingPlug(null);
                  setShowPlugModal(true);
                }}
              >
                <Plus className="w-4 h-4" />
                Add Smart Plug
              </Button>
            </div>
          </div>

          {/* Energy Summary Card */}
          {smartPlugs && smartPlugs.length > 0 && (
            <Card className="mb-6">
              <CardHeader>
                <h3 className="text-base font-semibold text-white flex items-center gap-2">
                  <Zap className="w-4 h-4 text-yellow-400" />
                  Energy Summary
                  {energyLoading && (
                    <Loader2 className="w-4 h-4 animate-spin text-bambu-gray ml-2" />
                  )}
                </h3>
              </CardHeader>
              <CardContent>
                {plugEnergySummary ? (
                  <div className="grid grid-cols-2 md:grid-cols-4 gap-4">
                    {/* Current Power */}
                    <div className="bg-bambu-dark rounded-lg p-3">
                      <div className="flex items-center gap-2 text-bambu-gray text-xs mb-1">
                        <Zap className="w-3 h-3" />
                        Current Power
                      </div>
                      <div className="text-xl font-bold text-white">
                        {plugEnergySummary.totalPower.toFixed(1)}
                        <span className="text-sm font-normal text-bambu-gray ml-1">W</span>
                      </div>
                      <div className="text-xs text-bambu-gray mt-1">
                        {plugEnergySummary.reachableCount}/{plugEnergySummary.totalPlugs} plugs online
                      </div>
                    </div>

                    {/* Today */}
                    <div className="bg-bambu-dark rounded-lg p-3">
                      <div className="flex items-center gap-2 text-bambu-gray text-xs mb-1">
                        <Calendar className="w-3 h-3" />
                        Today
                      </div>
                      <div className="text-xl font-bold text-white">
                        {plugEnergySummary.totalToday.toFixed(2)}
                        <span className="text-sm font-normal text-bambu-gray ml-1">kWh</span>
                      </div>
                      {localSettings && localSettings.energy_cost_per_kwh > 0 && (
                        <div className="text-xs text-bambu-gray mt-1">
                          ~{(plugEnergySummary.totalToday * localSettings.energy_cost_per_kwh).toFixed(2)} {localSettings.currency}
                        </div>
                      )}
                    </div>

                    {/* Yesterday */}
                    <div className="bg-bambu-dark rounded-lg p-3">
                      <div className="flex items-center gap-2 text-bambu-gray text-xs mb-1">
                        <TrendingUp className="w-3 h-3" />
                        Yesterday
                      </div>
                      <div className="text-xl font-bold text-white">
                        {plugEnergySummary.totalYesterday.toFixed(2)}
                        <span className="text-sm font-normal text-bambu-gray ml-1">kWh</span>
                      </div>
                      {localSettings && localSettings.energy_cost_per_kwh > 0 && (
                        <div className="text-xs text-bambu-gray mt-1">
                          ~{(plugEnergySummary.totalYesterday * localSettings.energy_cost_per_kwh).toFixed(2)} {localSettings.currency}
                        </div>
                      )}
                    </div>

                    {/* Total Lifetime */}
                    <div className="bg-bambu-dark rounded-lg p-3">
                      <div className="flex items-center gap-2 text-bambu-gray text-xs mb-1">
                        <DollarSign className="w-3 h-3" />
                        Total
                      </div>
                      <div className="text-xl font-bold text-white">
                        {plugEnergySummary.totalLifetime.toFixed(1)}
                        <span className="text-sm font-normal text-bambu-gray ml-1">kWh</span>
                      </div>
                      {localSettings && localSettings.energy_cost_per_kwh > 0 && (
                        <div className="text-xs text-bambu-gray mt-1">
                          ~{(plugEnergySummary.totalLifetime * localSettings.energy_cost_per_kwh).toFixed(2)} {localSettings.currency}
                        </div>
                      )}
                    </div>
                  </div>
                ) : !energyLoading ? (
                  <p className="text-sm text-bambu-gray">
                    Enable plugs to see energy summary
                  </p>
                ) : null}
              </CardContent>
            </Card>
          )}

          {plugsLoading ? (
            <div className="flex justify-center py-12">
              <Loader2 className="w-8 h-8 text-bambu-green animate-spin" />
            </div>
          ) : smartPlugs && smartPlugs.length > 0 ? (
            <div className="grid grid-cols-1 md:grid-cols-2 lg:grid-cols-3 gap-4">
              {smartPlugs.map((plug) => (
                <SmartPlugCard
                  key={plug.id}
                  plug={plug}
                  onEdit={(p) => {
                    setEditingPlug(p);
                    setShowPlugModal(true);
                  }}
                />
              ))}
            </div>
          ) : (
            <Card>
              <CardContent className="py-12">
                <div className="text-center text-bambu-gray">
                  <Plug className="w-16 h-16 mx-auto mb-4 opacity-30" />
                  <p className="text-lg font-medium text-white mb-2">No smart plugs configured</p>
                  <p className="text-sm mb-4">Add a Tasmota-based smart plug to track energy usage and automate power control.</p>
                  <Button
                    onClick={() => {
                      setEditingPlug(null);
                      setShowPlugModal(true);
                    }}
                  >
                    <Plus className="w-4 h-4" />
                    Add Your First Smart Plug
                  </Button>
                </div>
              </CardContent>
            </Card>
          )}
        </div>
      )}

      {/* Notifications Tab */}
      {activeTab === 'notifications' && (
        <div className="grid grid-cols-1 lg:grid-cols-2 gap-8">
          {/* Left Column: Providers */}
          <div>
            <div className="flex items-center justify-between mb-4">
              <h2 className="text-lg font-semibold text-white flex items-center gap-2">
                <Bell className="w-5 h-5 text-bambu-green" />
                Providers
              </h2>
              <div className="flex items-center gap-2">
                <Button
                  size="sm"
                  variant="secondary"
                  onClick={() => setShowLogViewer(true)}
                >
                  <History className="w-4 h-4" />
                  Log
                </Button>
                {notificationProviders && notificationProviders.length > 0 && (
                  <Button
                    size="sm"
                    variant="secondary"
                    onClick={() => {
                      setTestAllResult(null);
                      testAllMutation.mutate();
                    }}
                    disabled={testAllMutation.isPending}
                  >
                    {testAllMutation.isPending ? (
                      <Loader2 className="w-4 h-4 animate-spin" />
                    ) : (
                      <Send className="w-4 h-4" />
                    )}
                    Test All
                  </Button>
                )}
                <Button
                  size="sm"
                  onClick={() => {
                    setEditingProvider(null);
                    setShowNotificationModal(true);
                  }}
                >
                  <Plus className="w-4 h-4" />
                  Add
                </Button>
              </div>
            </div>

            {/* Notification Language Setting */}
            <Card className="mb-4">
              <CardContent className="py-3">
                <div className="flex items-center justify-between">
                  <div>
                    <p className="text-white text-sm font-medium">{t('settings.notificationLanguage')}</p>
                    <p className="text-xs text-bambu-gray">{t('settings.notificationLanguageDescription')}</p>
                  </div>
                  <select
                    value={localSettings.notification_language || 'en'}
                    onChange={(e) => updateSetting('notification_language', e.target.value)}
                    className="px-2 py-1.5 bg-bambu-dark border border-bambu-dark-tertiary rounded text-white text-sm focus:outline-none focus:ring-1 focus:ring-bambu-green"
                  >
                    {availableLanguages.map((lang) => (
                      <option key={lang.code} value={lang.code}>
                        {lang.nativeName}
                      </option>
                    ))}
                  </select>
                </div>
              </CardContent>
            </Card>

            {/* Test All Results */}
            {testAllResult && (
              <Card className="mb-4">
                <CardContent className="py-3">
                  <div className="flex items-center justify-between mb-2">
                    <span className="text-sm font-medium text-white">Test Results</span>
                    <button
                      onClick={() => setTestAllResult(null)}
                      className="text-bambu-gray hover:text-white text-xs"
                    >
                      Dismiss
                    </button>
                  </div>
                  <div className="flex items-center gap-4 text-sm mb-2">
                    <span className="flex items-center gap-1 text-bambu-green">
                      <CheckCircle className="w-4 h-4" />
                      {testAllResult.success} passed
                    </span>
                    {testAllResult.failed > 0 && (
                      <span className="flex items-center gap-1 text-red-400">
                        <XCircle className="w-4 h-4" />
                        {testAllResult.failed} failed
                      </span>
                    )}
                  </div>
                  {testAllResult.results.filter(r => !r.success).length > 0 && (
                    <div className="space-y-1 mt-2 pt-2 border-t border-bambu-dark-tertiary">
                      {testAllResult.results.filter(r => !r.success).map((result) => (
                        <div key={result.provider_id} className="text-xs text-red-400">
                          <span className="font-medium">{result.provider_name}:</span> {result.message}
                        </div>
                      ))}
                    </div>
                  )}
                </CardContent>
              </Card>
            )}

            {providersLoading ? (
              <div className="flex justify-center py-12">
                <Loader2 className="w-6 h-6 text-bambu-green animate-spin" />
              </div>
            ) : notificationProviders && notificationProviders.length > 0 ? (
              <div className="space-y-3">
                {notificationProviders.map((provider) => (
                  <NotificationProviderCard
                    key={provider.id}
                    provider={provider}
                    onEdit={(p) => {
                      setEditingProvider(p);
                      setShowNotificationModal(true);
                    }}
                  />
                ))}
              </div>
            ) : (
              <Card>
                <CardContent className="py-8">
                  <div className="text-center text-bambu-gray">
                    <Bell className="w-12 h-12 mx-auto mb-3 opacity-30" />
                    <p className="text-sm font-medium text-white mb-2">No providers configured</p>
                    <p className="text-xs mb-3">Add a provider to receive alerts.</p>
                    <Button
                      size="sm"
                      onClick={() => {
                        setEditingProvider(null);
                        setShowNotificationModal(true);
                      }}
                    >
                      <Plus className="w-4 h-4" />
                      Add Provider
                    </Button>
                  </div>
                </CardContent>
              </Card>
            )}
          </div>

          {/* Right Column: Templates */}
          <div>
            <h2 className="text-lg font-semibold text-white flex items-center gap-2 mb-4">
              <FileText className="w-5 h-5 text-bambu-green" />
              Message Templates
            </h2>
            <p className="text-sm text-bambu-gray mb-4">
              Customize notification messages for each event.
            </p>

            {templatesLoading ? (
              <div className="flex justify-center py-8">
                <Loader2 className="w-6 h-6 text-bambu-green animate-spin" />
              </div>
            ) : notificationTemplates && notificationTemplates.length > 0 ? (
              <div className="space-y-2">
                {notificationTemplates.map((template) => (
                  <Card
                    key={template.id}
                    className="cursor-pointer hover:border-bambu-green/50 transition-colors"
                    onClick={() => setEditingTemplate(template)}
                  >
                    <CardContent className="py-2.5 px-3">
                      <div className="flex items-center justify-between">
                        <div className="min-w-0 flex-1">
                          <p className="text-white font-medium text-sm truncate">{template.name}</p>
                          <p className="text-bambu-gray text-xs truncate mt-0.5">
                            {template.title_template}
                          </p>
                        </div>
                        <button
                          className="p-1.5 hover:bg-bambu-dark-tertiary rounded transition-colors shrink-0 ml-2"
                          onClick={(e) => {
                            e.stopPropagation();
                            setEditingTemplate(template);
                          }}
                        >
                          <Edit2 className="w-4 h-4 text-bambu-gray" />
                        </button>
                      </div>
                    </CardContent>
                  </Card>
                ))}
              </div>
            ) : (
              <Card>
                <CardContent className="py-8">
                  <div className="text-center text-bambu-gray">
                    <FileText className="w-12 h-12 mx-auto mb-3 opacity-30" />
                    <p className="text-sm">No templates available. Restart the backend to seed default templates.</p>
                  </div>
                </CardContent>
              </Card>
            )}
          </div>
        </div>
      )}

      {/* API Keys Tab */}
      {activeTab === 'apikeys' && (
        <div className="max-w-3xl">
          <div className="flex items-start justify-between gap-4 mb-6">
            <div className="flex-1">
              <h2 className="text-lg font-semibold text-white flex items-center gap-2">
                <Key className="w-5 h-5 text-bambu-green" />
                API Keys
              </h2>
              <p className="text-sm text-bambu-gray mt-1">
                Create API keys for external integrations and webhooks. Use these keys to control your printers from automation tools like Home Assistant.
              </p>
            </div>
            <Button size="sm" onClick={() => setShowCreateAPIKey(true)} className="flex-shrink-0">
              <Plus className="w-4 h-4" />
              Create Key
            </Button>
          </div>

          {/* Created Key Display */}
          {createdAPIKey && (
            <Card className="mb-6 border-bambu-green">
              <CardContent className="py-4">
                <div className="flex items-start gap-3">
                  <CheckCircle className="w-5 h-5 text-bambu-green flex-shrink-0 mt-0.5" />
                  <div className="flex-1">
                    <p className="text-white font-medium mb-1">API Key Created Successfully</p>
                    <p className="text-sm text-bambu-gray mb-2">
                      Copy this key now - it won't be shown again!
                    </p>
                    <div className="flex items-center gap-2 bg-bambu-dark rounded-lg p-2">
                      <code className="flex-1 text-sm text-bambu-green font-mono break-all">
                        {createdAPIKey}
                      </code>
                      <Button
                        variant="secondary"
                        size="sm"
                        onClick={async () => {
                          try {
                            if (navigator.clipboard && navigator.clipboard.writeText) {
                              await navigator.clipboard.writeText(createdAPIKey);
                            } else {
                              // Fallback for non-HTTPS contexts
                              const textArea = document.createElement('textarea');
                              textArea.value = createdAPIKey;
                              textArea.style.position = 'fixed';
                              textArea.style.left = '-999999px';
                              document.body.appendChild(textArea);
                              textArea.select();
                              document.execCommand('copy');
                              document.body.removeChild(textArea);
                            }
                            showToast('Key copied to clipboard');
                          } catch {
                            showToast('Failed to copy key', 'error');
                          }
                        }}
                      >
                        <Copy className="w-4 h-4" />
                      </Button>
                    </div>
                    <Button
                      variant="secondary"
                      size="sm"
                      className="mt-3"
                      onClick={() => setCreatedAPIKey(null)}
                    >
                      Dismiss
                    </Button>
                  </div>
                </div>
              </CardContent>
            </Card>
          )}

          {/* Create Key Form */}
          {showCreateAPIKey && (
            <Card className="mb-6">
              <CardHeader>
                <h3 className="text-base font-semibold text-white">Create New API Key</h3>
              </CardHeader>
              <CardContent className="space-y-4">
                <div>
                  <label className="block text-sm text-bambu-gray mb-1">Key Name</label>
                  <input
                    type="text"
                    value={newAPIKeyName}
                    onChange={(e) => setNewAPIKeyName(e.target.value)}
                    placeholder="e.g., Home Assistant, OctoPrint"
                    className="w-full px-3 py-2 bg-bambu-dark border border-bambu-dark-tertiary rounded-lg text-white focus:border-bambu-green focus:outline-none"
                  />
                </div>
                <div>
                  <label className="block text-sm text-bambu-gray mb-2">Permissions</label>
                  <div className="space-y-2">
                    <label className="flex items-center gap-3 cursor-pointer">
                      <input
                        type="checkbox"
                        checked={newAPIKeyPermissions.can_read_status}
                        onChange={(e) => setNewAPIKeyPermissions(prev => ({ ...prev, can_read_status: e.target.checked }))}
                        className="w-4 h-4 text-bambu-green rounded border-bambu-dark-tertiary bg-bambu-dark focus:ring-bambu-green"
                      />
                      <div>
                        <span className="text-white">Read Status</span>
                        <p className="text-xs text-bambu-gray">View printer status and queue</p>
                      </div>
                    </label>
                    <label className="flex items-center gap-3 cursor-pointer">
                      <input
                        type="checkbox"
                        checked={newAPIKeyPermissions.can_queue}
                        onChange={(e) => setNewAPIKeyPermissions(prev => ({ ...prev, can_queue: e.target.checked }))}
                        className="w-4 h-4 text-bambu-green rounded border-bambu-dark-tertiary bg-bambu-dark focus:ring-bambu-green"
                      />
                      <div>
                        <span className="text-white">Manage Queue</span>
                        <p className="text-xs text-bambu-gray">Add and remove items from print queue</p>
                      </div>
                    </label>
                    <label className="flex items-center gap-3 cursor-pointer">
                      <input
                        type="checkbox"
                        checked={newAPIKeyPermissions.can_control_printer}
                        onChange={(e) => setNewAPIKeyPermissions(prev => ({ ...prev, can_control_printer: e.target.checked }))}
                        className="w-4 h-4 text-bambu-green rounded border-bambu-dark-tertiary bg-bambu-dark focus:ring-bambu-green"
                      />
                      <div>
                        <span className="text-white">Control Printer</span>
                        <p className="text-xs text-bambu-gray">Pause, resume, and stop prints</p>
                      </div>
                    </label>
                  </div>
                </div>
                <div className="flex items-center gap-2 pt-2">
                  <Button
                    onClick={() => createAPIKeyMutation.mutate({
                      name: newAPIKeyName || 'Unnamed Key',
                      ...newAPIKeyPermissions,
                    })}
                    disabled={createAPIKeyMutation.isPending}
                  >
                    {createAPIKeyMutation.isPending ? (
                      <Loader2 className="w-4 h-4 animate-spin" />
                    ) : (
                      <Plus className="w-4 h-4" />
                    )}
                    Create Key
                  </Button>
                  <Button variant="secondary" onClick={() => setShowCreateAPIKey(false)}>
                    Cancel
                  </Button>
                </div>
              </CardContent>
            </Card>
          )}

          {/* Existing Keys List */}
          {apiKeysLoading ? (
            <div className="flex justify-center py-12">
              <Loader2 className="w-8 h-8 text-bambu-green animate-spin" />
            </div>
          ) : apiKeys && apiKeys.length > 0 ? (
            <div className="space-y-3">
              {apiKeys.map((key) => (
                <Card key={key.id}>
                  <CardContent className="py-3">
                    <div className="flex items-center justify-between">
                      <div className="flex items-center gap-3">
                        <Key className={`w-5 h-5 ${key.enabled ? 'text-bambu-green' : 'text-bambu-gray'}`} />
                        <div>
                          <p className="text-white font-medium">{key.name}</p>
                          <p className="text-xs text-bambu-gray">
                            {key.key_prefix}••••••••
                            {key.last_used && ` · Last used: ${new Date(key.last_used).toLocaleDateString()}`}
                          </p>
                        </div>
                      </div>
                      <div className="flex items-center gap-2">
                        <div className="flex gap-1 text-xs">
                          {key.can_read_status && (
                            <span className="px-1.5 py-0.5 bg-blue-500/20 text-blue-400 rounded">Read</span>
                          )}
                          {key.can_queue && (
                            <span className="px-1.5 py-0.5 bg-green-500/20 text-green-400 rounded">Queue</span>
                          )}
                          {key.can_control_printer && (
                            <span className="px-1.5 py-0.5 bg-orange-500/20 text-orange-400 rounded">Control</span>
                          )}
                        </div>
                        <Button
                          variant="secondary"
                          size="sm"
                          onClick={() => setShowDeleteAPIKeyConfirm(key.id)}
                        >
                          <Trash2 className="w-4 h-4 text-red-400" />
                        </Button>
                      </div>
                    </div>
                  </CardContent>
                </Card>
              ))}
            </div>
          ) : (
            <Card>
              <CardContent className="py-12">
                <div className="text-center text-bambu-gray">
                  <Key className="w-16 h-16 mx-auto mb-4 opacity-30" />
                  <p className="text-lg font-medium text-white mb-2">No API keys</p>
                  <p className="text-sm mb-4">Create an API key to integrate with external services.</p>
                  <Button onClick={() => setShowCreateAPIKey(true)}>
                    <Plus className="w-4 h-4" />
                    Create Your First Key
                  </Button>
                </div>
              </CardContent>
            </Card>
          )}

          {/* Webhook Documentation */}
          <Card className="mt-6">
            <CardHeader>
              <h3 className="text-base font-semibold text-white">Webhook Endpoints</h3>
            </CardHeader>
            <CardContent className="space-y-3 text-sm">
              <p className="text-bambu-gray">
                Use your API key in the <code className="text-bambu-green">X-API-Key</code> header.
              </p>
              <div className="space-y-2 font-mono text-xs">
                <div className="p-2 bg-bambu-dark rounded">
                  <span className="text-blue-400">GET</span>{' '}
                  <span className="text-white">/api/v1/webhook/status</span>
                  <span className="text-bambu-gray"> - Get all printer status</span>
                </div>
                <div className="p-2 bg-bambu-dark rounded">
                  <span className="text-blue-400">GET</span>{' '}
                  <span className="text-white">/api/v1/webhook/status/:id</span>
                  <span className="text-bambu-gray"> - Get specific printer status</span>
                </div>
                <div className="p-2 bg-bambu-dark rounded">
                  <span className="text-green-400">POST</span>{' '}
                  <span className="text-white">/api/v1/webhook/queue</span>
                  <span className="text-bambu-gray"> - Add to print queue</span>
                </div>
                <div className="p-2 bg-bambu-dark rounded">
                  <span className="text-orange-400">POST</span>{' '}
                  <span className="text-white">/api/v1/webhook/printer/:id/pause</span>
                  <span className="text-bambu-gray"> - Pause print</span>
                </div>
                <div className="p-2 bg-bambu-dark rounded">
                  <span className="text-orange-400">POST</span>{' '}
                  <span className="text-white">/api/v1/webhook/printer/:id/resume</span>
                  <span className="text-bambu-gray"> - Resume print</span>
                </div>
                <div className="p-2 bg-bambu-dark rounded">
                  <span className="text-red-400">POST</span>{' '}
                  <span className="text-white">/api/v1/webhook/printer/:id/stop</span>
                  <span className="text-bambu-gray"> - Stop print</span>
                </div>
              </div>
            </CardContent>
          </Card>
        </div>
      )}

      {/* Delete API Key Confirmation */}
      {showDeleteAPIKeyConfirm !== null && (
        <ConfirmModal
          title="Delete API Key"
          message="Are you sure you want to delete this API key? Any integrations using this key will stop working."
          confirmText="Delete Key"
          variant="danger"
          onConfirm={() => {
            deleteAPIKeyMutation.mutate(showDeleteAPIKeyConfirm);
            setShowDeleteAPIKeyConfirm(null);
          }}
          onCancel={() => setShowDeleteAPIKeyConfirm(null)}
        />
      )}

      {/* Smart Plug Modal */}
      {showPlugModal && (
        <AddSmartPlugModal
          plug={editingPlug}
          onClose={() => {
            setShowPlugModal(false);
            setEditingPlug(null);
          }}
        />
      )}

      {/* Notification Modal */}
      {showNotificationModal && (
        <AddNotificationModal
          provider={editingProvider}
          onClose={() => {
            setShowNotificationModal(false);
            setEditingProvider(null);
          }}
        />
      )}

      {/* Template Editor Modal */}
      {editingTemplate && (
        <NotificationTemplateEditor
          template={editingTemplate}
          onClose={() => setEditingTemplate(null)}
        />
      )}

      {/* Notification Log Viewer */}
      {showLogViewer && (
        <NotificationLogViewer
          onClose={() => setShowLogViewer(false)}
        />
      )}

      {/* Confirm Modal: Clear Notification Logs */}
      {showClearLogsConfirm && (
        <ConfirmModal
          title="Clear Notification Logs"
          message="This will permanently delete all notification logs older than 30 days. This action cannot be undone."
          confirmText="Clear Logs"
          variant="warning"
          onConfirm={async () => {
            setShowClearLogsConfirm(false);
            try {
              const result = await api.clearNotificationLogs(30);
              showToast(result.message, 'success');
            } catch {
              showToast('Failed to clear logs', 'error');
            }
          }}
          onCancel={() => setShowClearLogsConfirm(false)}
        />
      )}

      {/* Confirm Modal: Clear Local Storage */}
      {showClearStorageConfirm && (
        <ConfirmModal
          title="Reset UI Preferences"
          message="This will reset all UI preferences to defaults: sidebar order, theme, dashboard layout, view modes, and sorting preferences. Your printers, archives, and server settings will NOT be affected. The page will reload after clearing."
          confirmText="Reset Preferences"
          variant="default"
          onConfirm={() => {
            setShowClearStorageConfirm(false);
            localStorage.clear();
            showToast('UI preferences reset. Refreshing...', 'success');
            setTimeout(() => window.location.reload(), 1000);
          }}
          onCancel={() => setShowClearStorageConfirm(false)}
        />
      )}

      {/* Confirm Modal: Bulk Plug Action */}
      {showBulkPlugConfirm && (
        <ConfirmModal
          title={`Turn All Plugs ${showBulkPlugConfirm === 'on' ? 'On' : 'Off'}`}
          message={`This will turn ${showBulkPlugConfirm === 'on' ? 'ON' : 'OFF'} all ${smartPlugs?.filter(p => p.enabled).length || 0} enabled smart plugs. ${showBulkPlugConfirm === 'off' ? 'Any running printers may be affected!' : ''}`}
          confirmText={`Turn All ${showBulkPlugConfirm === 'on' ? 'On' : 'Off'}`}
          variant={showBulkPlugConfirm === 'off' ? 'danger' : 'warning'}
          onConfirm={() => {
            const action = showBulkPlugConfirm;
            setShowBulkPlugConfirm(null);
            bulkPlugActionMutation.mutate(action);
          }}
          onCancel={() => setShowBulkPlugConfirm(null)}
        />
      )}

      {/* Backup Modal */}
      {showBackupModal && (
        <BackupModal
          onClose={() => setShowBackupModal(false)}
          onExport={async (categories) => {
            setShowBackupModal(false);
            try {
              const { blob, filename } = await api.exportBackup(categories);
              const url = URL.createObjectURL(blob);
              const a = document.createElement('a');
              a.href = url;
              a.download = filename;
              a.click();
              URL.revokeObjectURL(url);
              showToast('Backup downloaded', 'success');
            } catch (err) {
              showToast('Failed to create backup', 'error');
            }
          }}
        />
      )}

      {/* Restore Modal */}
      {showRestoreModal && (
        <RestoreModal
          onClose={() => setShowRestoreModal(false)}
          onRestore={async (file, overwrite) => {
            return await api.importBackup(file, overwrite);
          }}
          onSuccess={() => {
            queryClient.invalidateQueries();
          }}
        />
      )}
    </div>
  );
}