import React, { useState, useEffect } from 'react';
import { X, User, Trash2, Shield, ShieldAlert, Lock, Unlock, Loader2, Image as ImageIcon, Map, FileText, CheckCircle, Star, Settings } from 'lucide-react';
import { useConfirm } from '../hooks/useConfirm';
import { useNotification } from '../hooks/useNotification';

interface UserManagementModalProps {
  isOpen: boolean;
  onClose: () => void;
}

export const UserManagementModal: React.FC<UserManagementModalProps> = ({ isOpen, onClose }) => {
  const confirm = useConfirm();
  const notify = useNotification();
  const [activeTab, setActiveTab] = useState<'users' | 'tours' | 'photos' | 'notes' | 'recommendations' | 'trash' | 'filters' | 'reports'>('users');
  const [users, setUsers] = useState<any[]>([]);
  const [photos, setPhotos] = useState<any[]>([]);
  const [reports, setReports] = useState<any[]>([]);
  const [reportsLoading, setReportsLoading] = useState(false);
  const [moderationSetting, setModerationSetting] = useState({ blockNsfw: false, blurFaces: false });
  const [wordFilters, setWordFilters] = useState<any[]>([]);
  const [newWord, setNewWord] = useState('');
  const [newReplacement, setNewReplacement] = useState('');
  const [loading, setLoading] = useState(false);
  const [photosLoading, setPhotosLoading] = useState(false);
  const [trashLoading, setTrashLoading] = useState(false);
  const [error, setError] = useState('');

  // Active Tours
  const [tours, setTours] = useState<any[]>([]);
  const [toursLoading, setToursLoading] = useState(false);
  const [selectedTourIds, setSelectedTourIds] = useState<string[]>([]);

  // Active Notes
  const [notes, setNotes] = useState<any[]>([]);
  const [notesLoading, setNotesLoading] = useState(false);
  const [selectedNoteIds, setSelectedNoteIds] = useState<string[]>([]);

  // Active Photos multiselect
  const [selectedPhotoIds, setSelectedPhotoIds] = useState<string[]>([]);

  // Recommended Locations
  const [adminRecommendations, setAdminRecommendations] = useState<any[]>([]);
  const [recommendationsLoading, setRecommendationsLoading] = useState(false);
  const [selectedRecIds, setSelectedRecIds] = useState<string[]>([]);

  // Trash Bin State
  const [trashData, setTrashData] = useState<{
    retentionDays: number;
    tours: any[];
    photos: any[];
    notes: any[];
  }>({ retentionDays: 30, tours: [], photos: [], notes: [] });
  const [trashSubTab, setTrashSubTab] = useState<'tours' | 'photos' | 'notes'>('tours');
  const [selectedTrashIds, setSelectedTrashIds] = useState<string[]>([]);
  const [retentionDaysInput, setRetentionDaysInput] = useState<number>(30);

  const handleToggleBlacklist = async (id: string, currentStatus: boolean) => {
    try {
      const response = await fetch(`/api/v1/admin/reports/${id}/blacklist`, {
        method: 'PATCH',
        headers: {
          'Content-Type': 'application/json',
          'Authorization': `Bearer ${localStorage.getItem('token')}`
        },
        body: JSON.stringify({ isBlacklisted: !currentStatus })
      });
      if (!response.ok) throw new Error('Thao tác thất bại');
      fetchReports();
    } catch (err: any) {
      alert(err.message);
    }
  };

  const handleDeleteReport = async (id: string) => {
    if (!await confirm({ 
      title: 'Xóa báo cáo', 
      message: 'Bạn có chắc muốn xóa báo cáo này?' 
    })) return;
    try {
      const response = await fetch(`/api/v1/admin/reports/${id}`, {
        method: 'DELETE',
        headers: { 'Authorization': `Bearer ${localStorage.getItem('token')}` }
      });
      if (!response.ok) throw new Error('Xóa báo cáo thất bại');
      fetchReports();
    } catch (err: any) {
      alert(err.message);
    }
  };

  const handleUpdateModeration = async (field: 'blockNsfw' | 'blurFaces', value: boolean) => {
    const updated = { ...moderationSetting, [field]: value };
    setModerationSetting(updated);
    try {
      await fetch('/api/v1/admin/moderation', {
        method: 'POST',
        headers: {
          'Content-Type': 'application/json',
          'Authorization': `Bearer ${localStorage.getItem('token')}`
        },
        body: JSON.stringify(updated)
      });
    } catch (e) {
      console.error(e);
    }
  };

  const handleToggleBlock = async (id: string) => {
    try {
      await fetch(`/api/v1/users/block/${id}`, {
        method: 'POST',
        headers: { 'Authorization': `Bearer ${localStorage.getItem('token')}` }
      });
      fetchUsers();
    } catch (err) {
      alert('Lỗi khi thay đổi trạng thái block');
    }
  };

  const handleDelete = async (id: string) => {
    if (!await confirm({ 
      title: 'Xóa người dùng', 
      message: 'Bạn có chắc chắn muốn xóa người dùng này?' 
    })) return;
    try {
      const res = await fetch(`/api/v1/users/${id}`, {
        method: 'DELETE',
        headers: { 'Authorization': `Bearer ${localStorage.getItem('token')}` }
      });
      if (!res.ok) {
        const data = await res.json();
        throw new Error(data.message);
      }
      fetchUsers();
    } catch (err: any) {
      alert(err.message);
    }
  };

  const handleAddWordFilter = async () => {
    if (!newWord.trim()) return;
    try {
      const res = await fetch('/api/v1/admin/moderation/word-filters', {
        method: 'POST',
        headers: {
          'Content-Type': 'application/json',
          'Authorization': `Bearer ${localStorage.getItem('token')}`
        },
        body: JSON.stringify({ word: newWord, replacement: newReplacement })
      });
      if (res.ok) {
        setNewWord('');
        setNewReplacement('');
        fetchWordFilters();
      }
    } catch (e) {
      console.error(e);
    }
  };

  const handleDeleteWordFilter = async (id: string) => {
    try {
      const res = await fetch(`/api/v1/admin/moderation/word-filters/${id}`, {
        method: 'DELETE',
        headers: { 'Authorization': `Bearer ${localStorage.getItem('token')}` }
      });
      if (res.ok) {
        fetchWordFilters();
      }
    } catch (e) {
      console.error(e);
    }
  };

  const fetchReports = async () => {
    setReportsLoading(true);
    try {
      const response = await fetch(`/api/v1/admin/reports`, {
        headers: { 'Authorization': `Bearer ${localStorage.getItem('token')}` }
      });
      if (!response.ok) throw new Error('Không thể tải danh sách báo cáo');
      const data = await response.json();
      setReports(data);
    } catch (err: any) {
      setError(err.message);
    } finally {
      setReportsLoading(false);
    }
  };

  const fetchUsers = async () => {
    setLoading(true);
    try {
      const response = await fetch(`/api/v1/users`, {
        headers: { 'Authorization': `Bearer ${localStorage.getItem('token')}` }
      });
      if (!response.ok) throw new Error('Không thể tải danh sách người dùng');
      const data = await response.json();
      setUsers(data);
    } catch (err: any) {
      setError(err.message);
    } finally {
      setLoading(false);
    }
  };

  const fetchPhotos = async () => {
    setPhotosLoading(true);
    try {
      const response = await fetch(`/api/v1/public-photos`);
      if (!response.ok) throw new Error('Không thể tải danh sách ảnh công cộng');
      const data = await response.json();
      setPhotos(data);
    } catch (err: any) {
      setError(err.message);
    } finally {
      setPhotosLoading(false);
    }
  };

  const fetchTours = async () => {
    setToursLoading(true);
    try {
      const res = await fetch('/api/v1/admin/tours', {
        headers: { 'Authorization': `Bearer ${localStorage.getItem('token')}` }
      });
      if (res.ok) {
        const data = await res.json();
        setTours(data);
      }
    } catch (e) {
      console.error(e);
    } finally {
      setToursLoading(false);
    }
  };

  const fetchNotes = async () => {
    setNotesLoading(true);
    try {
      const res = await fetch('/api/v1/admin/notes', {
        headers: { 'Authorization': `Bearer ${localStorage.getItem('token')}` }
      });
      if (res.ok) {
        const data = await res.json();
        setNotes(data);
      }
    } catch (e) {
      console.error(e);
    } finally {
      setNotesLoading(false);
    }
  };

  const fetchRecommendations = async () => {
    setRecommendationsLoading(true);
    try {
      const res = await fetch('/api/v1/admin/recommendations', {
        headers: { 'Authorization': `Bearer ${localStorage.getItem('token')}` }
      });
      if (res.ok) {
        const data = await res.json();
        setAdminRecommendations(data);
      }
    } catch (e) {
      console.error(e);
    } finally {
      setRecommendationsLoading(false);
    }
  };

  const fetchTrashData = async () => {
    setTrashLoading(true);
    try {
      const res = await fetch('/api/v1/admin/trash', {
        headers: { 'Authorization': `Bearer ${localStorage.getItem('token')}` }
      });
      if (res.ok) {
        const data = await res.json();
        setTrashData(data);
        setRetentionDaysInput(data.retentionDays || 30);
      }
    } catch (e) {
      console.error(e);
    } finally {
      setTrashLoading(false);
    }
  };

  const handleDeleteTour = async (id: string) => {
    if (!confirm('Bạn có chắc chắn muốn chuyển tour này vào thùng rác? Tất cả ghi chú và hình ảnh thuộc tour này cũng sẽ bị ẩn đi.')) return;
    try {
      const res = await fetch(`/api/v1/admin/tours/${id}`, {
        method: 'DELETE',
        headers: { 'Authorization': `Bearer ${localStorage.getItem('token')}` }
      });
      if (res.ok) {
        fetchTours();
      }
    } catch (e) {
      console.error(e);
    }
  };

  const handleDeleteNote = async (id: string) => {
    if (!confirm('Bạn có chắc chắn muốn chuyển ghi chú này vào thùng rác?')) return;
    try {
      const res = await fetch(`/api/v1/admin/notes/${id}`, {
        method: 'DELETE',
        headers: { 'Authorization': `Bearer ${localStorage.getItem('token')}` }
      });
      if (res.ok) {
        fetchNotes();
      }
    } catch (e) {
      console.error(e);
    }
  };

  const handleDeletePhoto = async (id: string) => {
    if (!confirm('Bạn có chắc chắn muốn xóa bức ảnh công khai này?')) return;
    try {
      const res = await fetch(`/api/v1/photos/${id}`, {
        method: 'DELETE',
        headers: { 'Authorization': `Bearer ${localStorage.getItem('token')}` }
      });
      if (!res.ok) {
        const data = await res.json();
        throw new Error(data.message);
      }
      fetchPhotos();
    } catch (err: any) {
      alert(err.message);
    }
  };

  const handleBulkDeleteTours = async () => {
    if (selectedTourIds.length === 0) return;
    if (!confirm(`Bạn có chắc muốn chuyển ${selectedTourIds.length} Tour đã chọn vào thùng rác?`)) return;
    setToursLoading(true);
    try {
      for (const id of selectedTourIds) {
        await fetch(`/api/v1/admin/tours/${id}`, {
          method: 'DELETE',
          headers: { 'Authorization': `Bearer ${localStorage.getItem('token')}` }
        });
      }
      setSelectedTourIds([]);
      fetchTours();
    } catch (e) {
      console.error(e);
    } finally {
      setToursLoading(false);
    }
  };

  const handleBulkDeleteNotes = async () => {
    if (selectedNoteIds.length === 0) return;
    if (!confirm(`Bạn có chắc muốn chuyển ${selectedNoteIds.length} Ghi chú đã chọn vào thùng rác?`)) return;
    setNotesLoading(true);
    try {
      for (const id of selectedNoteIds) {
        await fetch(`/api/v1/admin/notes/${id}`, {
          method: 'DELETE',
          headers: { 'Authorization': `Bearer ${localStorage.getItem('token')}` }
        });
      }
      setSelectedNoteIds([]);
      fetchNotes();
    } catch (e) {
      console.error(e);
    } finally {
      setNotesLoading(false);
    }
  };

  const handleBulkDeletePhotos = async () => {
    if (selectedPhotoIds.length === 0) return;
    if (!confirm(`Bạn có chắc muốn chuyển ${selectedPhotoIds.length} Ảnh đã chọn vào thùng rác?`)) return;
    setPhotosLoading(true);
    try {
      for (const id of selectedPhotoIds) {
        await fetch(`/api/v1/photos/${id}`, {
          method: 'DELETE',
          headers: { 'Authorization': `Bearer ${localStorage.getItem('token')}` }
        });
      }
      setSelectedPhotoIds([]);
      fetchPhotos();
    } catch (e) {
      console.error(e);
    } finally {
      setPhotosLoading(false);
    }
  };

  const handleApproveRecommendation = async (id: string, isApproved: boolean) => {
    try {
      const res = await fetch(`/api/v1/admin/recommendations/${id}/approve`, {
        method: 'PATCH',
        headers: {
          'Content-Type': 'application/json',
          'Authorization': `Bearer ${localStorage.getItem('token')}`
        },
        body: JSON.stringify({ isApproved })
      });
      if (res.ok) {
        fetchRecommendations();
      }
    } catch (e) {
      console.error(e);
    }
  };

  const handleDeleteRecommendation = async (id: string) => {
    if (!confirm('Bạn có chắc chắn muốn xóa địa điểm đề xuất này?')) return;
    try {
      const res = await fetch(`/api/v1/admin/recommendations/${id}`, {
        method: 'DELETE',
        headers: { 'Authorization': `Bearer ${localStorage.getItem('token')}` }
      });
      if (res.ok) {
        fetchRecommendations();
      }
    } catch (e) {
      console.error(e);
    }
  };

  const handleBulkApproveRecs = async (isApproved: boolean) => {
    if (selectedRecIds.length === 0) return;
    const actionText = isApproved ? 'phê duyệt' : 'bỏ phê duyệt';
    if (!confirm(`Bạn có chắc muốn ${actionText} ${selectedRecIds.length} địa điểm đã chọn?`)) return;
    setRecommendationsLoading(true);
    try {
      for (const id of selectedRecIds) {
        await fetch(`/api/v1/admin/recommendations/${id}/approve`, {
          method: 'PATCH',
          headers: {
            'Content-Type': 'application/json',
            'Authorization': `Bearer ${localStorage.getItem('token')}`
          },
          body: JSON.stringify({ isApproved })
        });
      }
      setSelectedRecIds([]);
      fetchRecommendations();
    } catch (e) {
      console.error(e);
    } finally {
      setRecommendationsLoading(false);
    }
  };

  const handleBulkDeleteRecs = async () => {
    if (selectedRecIds.length === 0) return;
    if (!confirm(`Bạn có chắc muốn xóa vĩnh viễn ${selectedRecIds.length} địa điểm đề xuất đã chọn?`)) return;
    setRecommendationsLoading(true);
    try {
      for (const id of selectedRecIds) {
        await fetch(`/api/v1/admin/recommendations/${id}`, {
          method: 'DELETE',
          headers: { 'Authorization': `Bearer ${localStorage.getItem('token')}` }
        });
      }
      setSelectedRecIds([]);
      fetchRecommendations();
    } catch (e) {
      console.error(e);
    } finally {
      setRecommendationsLoading(false);
    }
  };

  const handleRestoreTrash = async () => {
    if (selectedTrashIds.length === 0) return;
    if (!await confirm({ 
      title: 'Khôi phục các mục', 
      message: `Bạn có chắc muốn khôi phục ${selectedTrashIds.length} mục đã chọn?` 
    })) return;
    
    setTrashLoading(true);
    const idsToRestore = [...selectedTrashIds];
    // Convert plural to singular: 'photos' -> 'photo', 'tours' -> 'tour', 'notes' -> 'note'
    const itemType = trashSubTab === 'photos' ? 'photo' : trashSubTab === 'tours' ? 'tour' : 'note';
    
    try {
      console.log(`[Trash] Starting restore for ${idsToRestore.length} ${itemType} items`);
      const res = await fetch('/api/v1/admin/trash/restore', {
        method: 'POST',
        headers: {
          'Content-Type': 'application/json',
          'Authorization': `Bearer ${localStorage.getItem('token')}`
        },
        body: JSON.stringify({
          type: itemType,
          ids: idsToRestore
        })
      });
      
      if (res.ok) {
        console.log('[Trash] Restore successful');
        setSelectedTrashIds([]);
        notify({ title: '✓ Thành công', message: `Đã khôi phục ${idsToRestore.length} mục.`, type: 'success' });
        setTimeout(() => {
          fetchTrashData();
          setTrashLoading(false);
        }, 500);
      } else {
        const errorData = await res.json().catch(() => ({}));
        const errorMsg = errorData?.message || `Lỗi HTTP ${res.status}`;
        console.error('[Trash] Restore failed:', errorMsg);
        notify({ title: '✗ Khôi phục thất bại', message: errorMsg, type: 'error' });
        setTrashLoading(false);
      }
    } catch (e: any) {
      console.error('[Trash] Restore error:', e);
      notify({ title: '✗ Lỗi', message: e?.message || 'Lỗi khi khôi phục các mục', type: 'error' });
      setTrashLoading(false);
    }
  };

  const handleDeletePermanentTrash = async () => {
    if (selectedTrashIds.length === 0) return;
    if (!await confirm({ 
      title: '⚠️ XÓA VĨNH VIỄN', 
      message: `Cảnh báo: Bạn có chắc muốn XÓA VĨNH VIỄN ${selectedTrashIds.length} mục đã chọn? Thao tác này KHÔNG THỂ hoàn tác!` 
    })) return;
    
    setTrashLoading(true);
    const idsToDelete = [...selectedTrashIds];
    // Convert plural to singular: 'photos' -> 'photo', 'tours' -> 'tour', 'notes' -> 'note'
    const itemType = trashSubTab === 'photos' ? 'photo' : trashSubTab === 'tours' ? 'tour' : 'note';
    setSelectedTrashIds([]);
    
    try {
      console.log(`[Trash] Starting permanent delete for ${idsToDelete.length} ${itemType} items:`, idsToDelete);
      
      const res = await fetch('/api/v1/admin/trash/delete-permanent', {
        method: 'POST',
        headers: {
          'Content-Type': 'application/json',
          'Authorization': `Bearer ${localStorage.getItem('token')}`
        },
        body: JSON.stringify({
          type: itemType,
          ids: idsToDelete
        })
      });
      
      console.log('[Trash] Delete response status:', res.status);
      
      if (res.ok) {
        const responseData = await res.json();
        console.log('[Trash] Delete successful, response:', responseData);
        setError('');
        
        // Build success message
        const { deleted = 0, failed = 0, errors = [] } = responseData;
        if (failed === 0) {
          notify({ title: '✓ Xóa thành công', message: `Đã xóa vĩnh viễn ${deleted} mục.`, type: 'success' });
        } else {
          let errorMsg = `Xóa thành công ${deleted} mục, thất bại ${failed} mục.`;
          if (errors && errors.length > 0) {
            errorMsg += ` Lỗi: ${errors[0]}`;
          }
          notify({ title: '⚠️ Xóa một phần', message: errorMsg, type: 'error' });
        }
        
        // Refresh trash data after delete
        setTimeout(() => {
          console.log('[Trash] Refreshing trash data after delete');
          fetchTrashData();
          setTrashLoading(false);
        }, 800);
      } else {
        const errorData = await res.json().catch(() => ({}));
        const errorMsg = errorData?.message || `Lỗi HTTP ${res.status}`;
        console.error('[Trash] Delete failed with status', res.status, ':', errorMsg);
        setError(errorMsg);
        notify({ title: '✗ Xóa thất bại', message: errorMsg, type: 'error' });
        
        // Refresh to see current state
        setTimeout(() => {
          fetchTrashData();
          setTrashLoading(false);
        }, 500);
      }
    } catch (e: any) {
      console.error('[Trash] Delete error:', e);
      const errorMsg = e?.message || 'Lỗi mạng khi xóa các mục';
      setError(errorMsg);
      notify({ title: '✗ Lỗi', message: errorMsg, type: 'error' });
      
      // Refresh on error
      setTimeout(() => {
        fetchTrashData();
        setTrashLoading(false);
      }, 500);
    }
  };

  const handleEmptyAllTrash = async () => {
    if (!await confirm({ 
      title: '⚠️ LÀMTRỐNG THÙNG RÁC', 
      message: `Cảnh báo: Thao tác này sẽ XÓA VĨNH VIỄN TẤT CẢ mục trong thùng rác! KHÔNG THỂ hoàn tác!` 
    })) return;
    
    setTrashLoading(true);
    
    try {
      console.log('[Trash] Starting to empty ALL trash');
      
      const res = await fetch('/api/v1/admin/trash/empty-all', {
        method: 'POST',
        headers: {
          'Content-Type': 'application/json',
          'Authorization': `Bearer ${localStorage.getItem('token')}`
        }
      });
      
      console.log('[Trash] Empty all response status:', res.status);
      
      if (res.ok) {
        const responseData = await res.json();
        console.log('[Trash] Empty all successful, response:', responseData);
        setError('');
        setSelectedTrashIds([]);
        
        const { totalDeleted = 0 } = responseData;
        notify({ 
          title: '✓ Thùng rác đã được làm trống', 
          message: `Đã xóa vĩnh viễn ${totalDeleted} mục.`, 
          type: 'success' 
        });
        
        // Refresh trash data
        setTimeout(() => {
          console.log('[Trash] Refreshing trash data after empty all');
          fetchTrashData();
          setTrashLoading(false);
        }, 800);
      } else {
        const errorData = await res.json().catch(() => ({}));
        const errorMsg = errorData?.message || `Lỗi HTTP ${res.status}`;
        console.error('[Trash] Empty all failed with status', res.status, ':', errorMsg);
        setError(errorMsg);
        notify({ title: '✗ Làm trống thất bại', message: errorMsg, type: 'error' });
        
        setTimeout(() => {
          fetchTrashData();
          setTrashLoading(false);
        }, 500);
      }
    } catch (e: any) {
      console.error('[Trash] Empty all error:', e);
      const errorMsg = e?.message || 'Lỗi mạng khi làm trống thùng rác';
      setError(errorMsg);
      notify({ title: '✗ Lỗi', message: errorMsg, type: 'error' });
      
      setTimeout(() => {
        fetchTrashData();
        setTrashLoading(false);
      }, 500);
    }
  };

  const handleSaveRetentionDays = async () => {
    try {
      const res = await fetch('/api/v1/admin/trash/retention-days', {
        method: 'PATCH',
        headers: {
          'Content-Type': 'application/json',
          'Authorization': `Bearer ${localStorage.getItem('token')}`
        },
        body: JSON.stringify({ days: retentionDaysInput })
      });
      if (res.ok) {
        notify({ title: '✓ Cập nhật thành công', message: 'Số ngày lưu trữ đã được cập nhật.', type: 'success' });
        fetchTrashData();
      } else {
        const data = await res.json();
        notify({ title: '✗ Lỗi', message: data.message || 'Lỗi khi cập nhật số ngày lưu trữ.', type: 'error' });
      }
    } catch (e) {
      console.error(e);
    }
  };

  const fetchModerationSettings = async () => {
    try {
      const res = await fetch('/api/v1/moderation/settings');
      if (res.ok) {
        const data = await res.json();
        setModerationSetting({ blockNsfw: data.blockNsfw, blurFaces: data.blurFaces });
      }
    } catch (e) {
      console.error(e);
    }
  };

  const fetchWordFilters = async () => {
    try {
      const res = await fetch('/api/v1/admin/moderation/word-filters', {
        headers: { 'Authorization': `Bearer ${localStorage.getItem('token')}` }
      });
      if (res.ok) {
        const data = await res.json();
        setWordFilters(data);
      }
    } catch (e) {
      console.error(e);
    }
  };

  useEffect(() => {
    if (isOpen) {
      if (activeTab === 'users') {
        fetchUsers();
      } else if (activeTab === 'tours') {
        fetchTours();
      } else if (activeTab === 'photos') {
        fetchPhotos();
      } else if (activeTab === 'notes') {
        fetchNotes();
      } else if (activeTab === 'recommendations') {
        fetchRecommendations();
      } else if (activeTab === 'trash') {
        fetchTrashData();
      } else if (activeTab === 'filters') {
        fetchModerationSettings();
        fetchWordFilters();
      } else if (activeTab === 'reports') {
        fetchReports();
      }
    }
  }, [isOpen, activeTab]);

  useEffect(() => {
    setSelectedTrashIds([]);
  }, [trashSubTab]);

  const getCountdownDays = (deletedAtStr: string, retentionDays: number) => {
    const deletedAt = new Date(deletedAtStr);
    const expiryDate = new Date(deletedAt.getTime() + retentionDays * 24 * 60 * 60 * 1000);
    const now = new Date();
    const diffTime = expiryDate.getTime() - now.getTime();
    const diffDays = Math.ceil(diffTime / (1000 * 60 * 60 * 24));
    return diffDays > 0 ? diffDays : 0;
  };

  if (!isOpen) return null;

  const currentTrashList = trashSubTab === 'tours' ? trashData.tours : trashSubTab === 'photos' ? trashData.photos : trashData.notes;
  const isAllTrashSelected = currentTrashList?.length > 0 && selectedTrashIds.length === currentTrashList?.length;
  const toggleSelectAllTrash = () => {
    if (isAllTrashSelected) {
      setSelectedTrashIds([]);
    } else {
      setSelectedTrashIds(currentTrashList.map((t: any) => t.id));
    }
  };

  const isAllToursSelected = tours.length > 0 && selectedTourIds.length === tours.length;
  const toggleSelectAllTours = () => {
    if (isAllToursSelected) {
      setSelectedTourIds([]);
    } else {
      setSelectedTourIds(tours.map(t => t.id));
    }
  };

  const isAllNotesSelected = notes.length > 0 && selectedNoteIds.length === notes.length;
  const toggleSelectAllNotes = () => {
    if (isAllNotesSelected) {
      setSelectedNoteIds([]);
    } else {
      setSelectedNoteIds(notes.map(n => n.id));
    }
  };

  const isAllPhotosSelected = photos.length > 0 && selectedPhotoIds.length === photos.length;
  const toggleSelectAllPhotos = () => {
    if (isAllPhotosSelected) {
      setSelectedPhotoIds([]);
    } else {
      setSelectedPhotoIds(photos.map(p => p.id));
    }
  };

  const isAllRecsSelected = adminRecommendations.length > 0 && selectedRecIds.length === adminRecommendations.length;
  const toggleSelectAllRecs = () => {
    if (isAllRecsSelected) {
      setSelectedRecIds([]);
    } else {
      setSelectedRecIds(adminRecommendations.map(r => r.id));
    }
  };

  return (
    <div className="fixed inset-0 z-[2000] flex items-center justify-center p-4">
      <div className="absolute inset-0 bg-gray-900/60 backdrop-blur-sm" onClick={onClose} />
      <div className="relative w-full max-w-5xl bg-white rounded-3xl shadow-2xl overflow-hidden flex flex-col h-[85vh]">
        
        {/* Header */}
        <div className="p-6 border-b border-gray-100 flex justify-between items-center bg-gray-50/50">
          <div>
            <h2 className="text-2xl font-bold text-gray-900 flex items-center gap-2">
              <Shield className="w-6 h-6 text-blue-600" /> Hệ thống quản trị
            </h2>
            <p className="text-sm text-gray-500">Quản lý thành viên, kiểm duyệt tour, ghi chú, địa điểm đề xuất và dọn dẹp hệ thống.</p>
          </div>
          <button onClick={onClose} className="p-2 hover:bg-gray-200 rounded-full transition-colors cursor-pointer">
            <X className="w-6 h-6 text-gray-400" />
          </button>
        </div>

        {/* Tab Selection */}
        <div className="flex border-b border-gray-100 bg-gray-50/20 px-6 overflow-x-auto no-scrollbar whitespace-nowrap">
          <button
            onClick={() => setActiveTab('users')}
            className={`py-4 px-4 font-bold text-sm transition-all border-b-2 -mb-[2px] flex items-center gap-2 shrink-0 ${
              activeTab === 'users' ? 'border-blue-600 text-blue-600' : 'border-transparent text-gray-400 hover:text-gray-600'
            }`}
          >
            <User className="w-4 h-4" />
            Thành viên
          </button>
          <button
            onClick={() => setActiveTab('tours')}
            className={`py-4 px-4 font-bold text-sm transition-all border-b-2 -mb-[2px] flex items-center gap-2 shrink-0 ${
              activeTab === 'tours' ? 'border-blue-600 text-blue-600' : 'border-transparent text-gray-400 hover:text-gray-600'
            }`}
          >
            <Map className="w-4 h-4" />
            Tour hoạt động
          </button>
          <button
            onClick={() => setActiveTab('photos')}
            className={`py-4 px-4 font-bold text-sm transition-all border-b-2 -mb-[2px] flex items-center gap-2 shrink-0 ${
              activeTab === 'photos' ? 'border-blue-600 text-blue-600' : 'border-transparent text-gray-400 hover:text-gray-600'
            }`}
          >
            <ImageIcon className="w-4 h-4" />
            Ảnh công cộng
          </button>
          <button
            onClick={() => setActiveTab('notes')}
            className={`py-4 px-4 font-bold text-sm transition-all border-b-2 -mb-[2px] flex items-center gap-2 shrink-0 ${
              activeTab === 'notes' ? 'border-blue-600 text-blue-600' : 'border-transparent text-gray-400 hover:text-gray-600'
            }`}
          >
            <FileText className="w-4 h-4" />
            Ghi chú
          </button>
          <button
            onClick={() => setActiveTab('recommendations')}
            className={`py-4 px-4 font-bold text-sm transition-all border-b-2 -mb-[2px] flex items-center gap-2 shrink-0 ${
              activeTab === 'recommendations' ? 'border-blue-600 text-blue-600' : 'border-transparent text-gray-400 hover:text-gray-600'
            }`}
          >
            <Star className="w-4 h-4" />
            Địa điểm đề xuất
          </button>
          <button
            onClick={() => setActiveTab('trash')}
            className={`py-4 px-4 font-bold text-sm transition-all border-b-2 -mb-[2px] flex items-center gap-2 shrink-0 ${
              activeTab === 'trash' ? 'border-blue-600 text-blue-600' : 'border-transparent text-gray-400 hover:text-gray-600'
            }`}
          >
            <Trash2 className="w-4 h-4" />
            Thùng rác
          </button>
          <button
            onClick={() => setActiveTab('filters')}
            className={`py-4 px-4 font-bold text-sm transition-all border-b-2 -mb-[2px] flex items-center gap-2 shrink-0 ${
              activeTab === 'filters' ? 'border-blue-600 text-blue-600' : 'border-transparent text-gray-400 hover:text-gray-600'
            }`}
          >
            <Settings className="w-4 h-4" />
            Bộ lọc
          </button>
          <button
            onClick={() => setActiveTab('reports')}
            className={`py-4 px-4 font-bold text-sm transition-all border-b-2 -mb-[2px] flex items-center gap-2 shrink-0 ${
              activeTab === 'reports' ? 'border-blue-600 text-blue-600' : 'border-transparent text-gray-400 hover:text-gray-600'
            }`}
          >
            <ShieldAlert className="w-4 h-4" />
            Blacklist
          </button>
        </div>

        {/* Content Body */}
        <div className="flex-1 overflow-y-auto p-6">
          {error && (
            <div className="p-4 bg-red-50 text-red-600 rounded-xl font-bold mb-4">{error}</div>
          )}

          {activeTab === 'users' ? (
            loading ? (
              <div className="flex justify-center py-20"><Loader2 className="w-10 h-10 animate-spin text-blue-600" /></div>
            ) : (
              <table className="w-full text-left border-collapse">
                <thead>
                  <tr className="text-gray-400 text-xs uppercase tracking-wider border-b border-gray-100">
                    <th className="pb-4 font-bold px-2">Người dùng</th>
                    <th className="pb-4 font-bold">Vai trò</th>
                    <th className="pb-4 font-bold">Trạng thái</th>
                    <th className="pb-4 font-bold text-right">Thao tác</th>
                  </tr>
                </thead>
                <tbody className="divide-y divide-gray-50">
                  {users.map(u => (
                    <tr key={u.id} className="group hover:bg-gray-50/50 transition-colors">
                      <td className="py-4 px-2">
                        <div className="flex items-center gap-3">
                          <div className="w-10 h-10 rounded-full bg-blue-100 flex items-center justify-center text-blue-600 font-bold">
                            {u.name?.charAt(0) || <User className="w-5 h-5" />}
                          </div>
                          <div>
                            <div className="font-bold text-gray-900">{u.name || 'N/A'}</div>
                            <div className="text-xs text-gray-400">{u.email}</div>
                          </div>
                        </div>
                      </td>
                      <td className="py-4">
                        {u.isAdmin ? (
                          <span className="px-2 py-1 bg-purple-50 text-purple-600 text-[10px] font-black rounded-md border border-purple-100">ADMIN</span>
                        ) : (
                          <span className="px-2 py-1 bg-gray-50 text-gray-500 text-[10px] font-black rounded-md border border-gray-100">USER</span>
                        )}
                      </td>
                      <td className="py-4">
                        {u.isBlocked ? (
                          <span className="flex items-center gap-1 text-red-500 text-xs font-bold"><ShieldAlert className="w-3 h-3" /> Đã khóa</span>
                        ) : (
                          <span className="text-green-500 text-xs font-bold">Đang hoạt động</span>
                        )}
                      </td>
                      <td className="py-4 text-right">
                        <div className="flex justify-end gap-2">
                          <button 
                            onClick={() => handleToggleBlock(u.id)}
                            className={`p-2 rounded-xl transition-all ${u.isBlocked ? 'bg-green-50 text-green-600 hover:bg-green-100' : 'bg-amber-50 text-amber-600 hover:bg-amber-100'} cursor-pointer`}
                            title={u.isBlocked ? 'Mở khóa' : 'Khóa tài khoản'}
                          >
                            {u.isBlocked ? <Unlock className="w-4 h-4" /> : <Lock className="w-4 h-4" />}
                          </button>
                          <button 
                            onClick={() => handleDelete(u.id)}
                            className="p-2 bg-red-50 text-red-600 rounded-xl hover:bg-red-100 transition-all cursor-pointer"
                            title="Xóa người dùng"
                          >
                            <Trash2 className="w-4 h-4" />
                          </button>
                        </div>
                      </td>
                    </tr>
                  ))}
                </tbody>
              </table>
            )
          ) : activeTab === 'tours' ? (
            toursLoading ? (
              <div className="flex justify-center py-20"><Loader2 className="w-10 h-10 animate-spin text-blue-600" /></div>
            ) : (
              <div className="space-y-4 text-gray-800">
                <div className="flex justify-between items-center bg-gray-50 p-4 rounded-2xl border border-gray-100">
                  <span className="text-sm font-bold text-gray-700">
                    Chọn <span className="text-blue-600">{selectedTourIds.length}</span> trên {tours.length} Tour
                  </span>
                  {selectedTourIds.length > 0 && (
                    <button
                      onClick={handleBulkDeleteTours}
                      className="px-4 py-2 bg-red-600 hover:bg-red-700 text-white rounded-xl font-bold text-xs uppercase tracking-wider flex items-center gap-1.5 shadow-md transition-all active:scale-95 cursor-pointer"
                    >
                      <Trash2 className="w-4 h-4" />
                      Chuyển vào thùng rác
                    </button>
                  )}
                </div>
                <div className="border border-gray-100 rounded-2xl overflow-hidden shadow-sm">
                  <table className="w-full text-left border-collapse bg-white">
                    <thead>
                      <tr className="text-gray-400 text-xs uppercase tracking-wider border-b border-gray-100 bg-gray-50/50">
                        <th className="py-3 px-4 font-bold w-12 text-center">
                          <input 
                            type="checkbox"
                            checked={isAllToursSelected}
                            onChange={toggleSelectAllTours}
                            className="rounded text-blue-600 focus:ring-blue-500 cursor-pointer"
                          />
                        </th>
                        <th className="py-3 px-4 font-bold">Tên Tour</th>
                        <th className="py-3 px-4 font-bold">Người tạo</th>
                        <th className="py-3 px-4 font-bold">Thành viên</th>
                        <th className="py-3 px-4 font-bold">Ngày tạo</th>
                        <th className="py-3 px-4 font-bold text-right">Thao tác</th>
                      </tr>
                    </thead>
                    <tbody className="divide-y divide-gray-50">
                      {tours.map(t => (
                        <tr key={t.id} className="group hover:bg-gray-50/30 transition-colors">
                          <td className="py-3.5 px-4 text-center">
                            <input 
                              type="checkbox"
                              checked={selectedTourIds.includes(t.id)}
                              onChange={(e) => {
                                if (e.target.checked) {
                                  setSelectedTourIds([...selectedTourIds, t.id]);
                                } else {
                                  setSelectedTourIds(selectedTourIds.filter(id => id !== t.id));
                                }
                              }}
                              className="rounded text-blue-600 focus:ring-blue-500 cursor-pointer"
                            />
                          </td>
                          <td className="py-3.5 px-4">
                            <div className="font-bold text-gray-900 text-sm truncate max-w-[200px]" title={t.title}>{t.title}</div>
                          </td>
                          <td className="py-3.5 px-4 text-xs font-medium text-gray-700">
                            <div>{t.creator?.name || 'Không rõ'}</div>
                            <div className="text-[10px] text-gray-400">{t.creator?.email}</div>
                          </td>
                          <td className="py-3.5 px-4 text-xs font-semibold text-gray-600">
                            {t._count?.participants || 0} người
                          </td>
                          <td className="py-3.5 px-4 text-xs text-gray-400">
                            {new Date(t.createdAt).toLocaleDateString('vi-VN')}
                          </td>
                          <td className="py-3.5 px-4 text-right">
                            <button
                              onClick={() => handleDeleteTour(t.id)}
                              className="p-2 bg-red-50 text-red-600 rounded-lg hover:bg-red-100 transition-all cursor-pointer"
                              title="Chuyển vào thùng rác"
                            >
                              <Trash2 className="w-4 h-4" />
                            </button>
                          </td>
                        </tr>
                      ))}
                    </tbody>
                  </table>
                </div>
              </div>
            )
          ) : activeTab === 'photos' ? (
            photosLoading ? (
              <div className="flex justify-center py-20"><Loader2 className="w-10 h-10 animate-spin text-blue-600" /></div>
            ) : photos.length === 0 ? (
              <div className="text-center py-20 text-gray-400 italic">Chưa có ảnh công cộng nào được tải lên.</div>
            ) : (
              <div className="space-y-4">
                <div className="flex justify-between items-center bg-gray-50 p-4 rounded-2xl border border-gray-100">
                  <div className="flex items-center gap-2">
                    <input 
                      type="checkbox"
                      id="select-all-photos"
                      checked={isAllPhotosSelected}
                      onChange={toggleSelectAllPhotos}
                      className="rounded text-blue-600 focus:ring-blue-500 cursor-pointer"
                    />
                    <label htmlFor="select-all-photos" className="text-xs font-bold text-gray-700 cursor-pointer">
                      Chọn tất cả ({selectedPhotoIds.length}/{photos.length})
                    </label>
                  </div>
                  {selectedPhotoIds.length > 0 && (
                    <button
                      onClick={handleBulkDeletePhotos}
                      className="px-4 py-2 bg-red-600 hover:bg-red-700 text-white rounded-xl font-bold text-xs uppercase tracking-wider flex items-center gap-1.5 shadow-md transition-all active:scale-95 cursor-pointer"
                    >
                      <Trash2 className="w-4 h-4" />
                      Chuyển vào thùng rác
                    </button>
                  )}
                </div>
                <div className="grid grid-cols-2 sm:grid-cols-3 md:grid-cols-4 gap-6">
                  {photos.map(p => (
                    <div key={p.id} className={`relative group bg-gray-50 border rounded-2xl overflow-hidden shadow-sm hover:shadow-md transition-all flex flex-col justify-between ${
                      selectedPhotoIds.includes(p.id) ? 'border-blue-500 ring-2 ring-blue-500/20' : 'border-gray-100'
                    }`}>
                      <div className="aspect-square bg-slate-900 overflow-hidden flex items-center justify-center relative">
                        <img src={p.imageUrl} alt="Public content" className="w-full h-full object-cover transition-transform group-hover:scale-105" />
                        <div className="absolute top-2 left-2 z-10">
                          <input 
                            type="checkbox"
                            checked={selectedPhotoIds.includes(p.id)}
                            onChange={(e) => {
                              if (e.target.checked) {
                                setSelectedPhotoIds([...selectedPhotoIds, p.id]);
                              } else {
                                setSelectedPhotoIds(selectedPhotoIds.filter(id => id !== p.id));
                              }
                            }}
                            className="w-4 h-4 rounded text-blue-600 focus:ring-blue-500 cursor-pointer shadow"
                          />
                        </div>
                        <button
                          onClick={() => handleDeletePhoto(p.id)}
                          className="absolute top-2 right-2 p-2 bg-red-600 hover:bg-red-500 text-white rounded-xl shadow-lg transition-all active:scale-95 opacity-0 group-hover:opacity-100 focus:opacity-100 z-10 cursor-pointer"
                          title="Xóa ảnh công cộng"
                        >
                          <Trash2 className="w-4 h-4" />
                        </button>
                      </div>
                      <div className="p-3 bg-white">
                        <div className="font-bold text-xs text-gray-800 truncate" title={p.uploader?.name || 'Ẩn danh'}>
                          Đăng bởi: {p.uploader?.name || 'Ẩn danh'}
                        </div>
                        <div className="text-[10px] text-gray-400 mt-1">
                          {new Date(p.capturedAt).toLocaleDateString('vi-VN', {
                            day: '2-digit',
                            month: '2-digit',
                            year: 'numeric'
                          })}
                        </div>
                      </div>
                    </div>
                  ))}
                </div>
              </div>
            )
          ) : activeTab === 'notes' ? (
            notesLoading ? (
              <div className="flex justify-center py-20"><Loader2 className="w-10 h-10 animate-spin text-blue-600" /></div>
            ) : notes.length === 0 ? (
              <div className="text-center py-20 text-gray-400 italic">Chưa có ghi chú nào hoạt động.</div>
            ) : (
              <div className="space-y-4 text-gray-800">
                <div className="flex justify-between items-center bg-gray-50 p-4 rounded-2xl border border-gray-100">
                  <span className="text-sm font-bold text-gray-700">
                    Chọn <span className="text-blue-600">{selectedNoteIds.length}</span> trên {notes.length} ghi chú
                  </span>
                  {selectedNoteIds.length > 0 && (
                    <button
                      onClick={handleBulkDeleteNotes}
                      className="px-4 py-2 bg-red-600 hover:bg-red-700 text-white rounded-xl font-bold text-xs uppercase tracking-wider flex items-center gap-1.5 shadow-md transition-all active:scale-95 cursor-pointer"
                    >
                      <Trash2 className="w-4 h-4" />
                      Chuyển vào thùng rác
                    </button>
                  )}
                </div>
                <div className="border border-gray-100 rounded-2xl overflow-hidden shadow-sm">
                  <table className="w-full text-left border-collapse bg-white">
                    <thead>
                      <tr className="text-gray-400 text-xs uppercase tracking-wider border-b border-gray-100 bg-gray-50/50">
                        <th className="py-3 px-4 font-bold w-12 text-center">
                          <input 
                            type="checkbox"
                            checked={isAllNotesSelected}
                            onChange={toggleSelectAllNotes}
                            className="rounded text-blue-600 focus:ring-blue-500 cursor-pointer"
                          />
                        </th>
                        <th className="py-3 px-4 font-bold">Tiêu đề</th>
                        <th className="py-3 px-4 font-bold">Thuộc Tour</th>
                        <th className="py-3 px-4 font-bold">Người tạo</th>
                        <th className="py-3 px-4 font-bold">Nội dung</th>
                        <th className="py-3 px-4 font-bold">Ngày tạo</th>
                        <th className="py-3 px-4 font-bold text-right">Thao tác</th>
                      </tr>
                    </thead>
                    <tbody className="divide-y divide-gray-50">
                      {notes.map(n => (
                        <tr key={n.id} className="group hover:bg-gray-50/30 transition-colors">
                          <td className="py-3.5 px-4 text-center">
                            <input 
                              type="checkbox"
                              checked={selectedNoteIds.includes(n.id)}
                              onChange={(e) => {
                                if (e.target.checked) {
                                  setSelectedNoteIds([...selectedNoteIds, n.id]);
                                } else {
                                  setSelectedNoteIds(selectedNoteIds.filter(id => id !== n.id));
                                }
                              }}
                              className="rounded text-blue-600 focus:ring-blue-500 cursor-pointer"
                            />
                          </td>
                          <td className="py-3.5 px-4">
                            <div className="font-bold text-gray-900 text-sm truncate max-w-[150px]" title={n.title}>{n.title}</div>
                          </td>
                          <td className="py-3.5 px-4 text-xs font-semibold text-blue-600">
                            {n.tour?.title || 'Không rõ'}
                          </td>
                          <td className="py-3.5 px-4 text-xs">
                            <div className="font-semibold text-gray-800">{n.user?.name || 'Ẩn danh'}</div>
                            <div className="text-[10px] text-gray-400">{n.user?.email}</div>
                          </td>
                          <td className="py-3.5 px-4 text-xs text-gray-500 truncate max-w-[200px]" title={n.content?.replace(/<[^>]*>/g, '')}>
                            {n.content?.replace(/<[^>]*>/g, '')}
                          </td>
                          <td className="py-3.5 px-4 text-xs text-gray-400">
                            {new Date(n.createdAt).toLocaleDateString('vi-VN')}
                          </td>
                          <td className="py-3.5 px-4 text-right">
                            <button
                              onClick={() => handleDeleteNote(n.id)}
                              className="p-2 bg-red-50 text-red-600 rounded-lg hover:bg-red-100 transition-all cursor-pointer"
                              title="Chuyển vào thùng rác"
                            >
                              <Trash2 className="w-4 h-4" />
                            </button>
                          </td>
                        </tr>
                      ))}
                    </tbody>
                  </table>
                </div>
              </div>
            )
          ) : activeTab === 'recommendations' ? (
            recommendationsLoading ? (
              <div className="flex justify-center py-20"><Loader2 className="w-10 h-10 animate-spin text-blue-600" /></div>
            ) : adminRecommendations.length === 0 ? (
              <div className="text-center py-20 text-gray-400 italic">Chưa có đề xuất địa điểm nào.</div>
            ) : (
              <div className="space-y-4 text-gray-800">
                <div className="flex justify-between items-center bg-gray-50 p-4 rounded-2xl border border-gray-100">
                  <span className="text-sm font-bold text-gray-700">
                    Chọn <span className="text-blue-600">{selectedRecIds.length}</span> trên {adminRecommendations.length} địa điểm
                  </span>
                  {selectedRecIds.length > 0 && (
                    <div className="flex gap-2">
                      <button
                        onClick={() => handleBulkApproveRecs(true)}
                        className="px-4 py-2 bg-emerald-600 hover:bg-emerald-700 text-white rounded-xl font-bold text-xs uppercase tracking-wider flex items-center gap-1.5 shadow-md transition-all active:scale-95 cursor-pointer"
                      >
                        <CheckCircle className="w-4 h-4" />
                        Phê duyệt
                      </button>
                      <button
                        onClick={() => handleBulkApproveRecs(false)}
                        className="px-4 py-2 bg-amber-600 hover:bg-amber-700 text-white rounded-xl font-bold text-xs uppercase tracking-wider flex items-center gap-1.5 shadow-md transition-all active:scale-95 cursor-pointer"
                      >
                        Huỷ phê duyệt
                      </button>
                      <button
                        onClick={handleBulkDeleteRecs}
                        className="px-4 py-2 bg-red-600 hover:bg-red-700 text-white rounded-xl font-bold text-xs uppercase tracking-wider flex items-center gap-1.5 shadow-md transition-all active:scale-95 cursor-pointer"
                      >
                        <Trash2 className="w-4 h-4" />
                        Xóa vĩnh viễn
                      </button>
                    </div>
                  )}
                </div>
                <div className="border border-gray-100 rounded-2xl overflow-hidden shadow-sm">
                  <table className="w-full text-left border-collapse bg-white">
                    <thead>
                      <tr className="text-gray-400 text-xs uppercase tracking-wider border-b border-gray-100 bg-gray-50/50">
                        <th className="py-3 px-4 font-bold w-12 text-center">
                          <input 
                            type="checkbox"
                            checked={isAllRecsSelected}
                            onChange={toggleSelectAllRecs}
                            className="rounded text-blue-600 focus:ring-blue-500 cursor-pointer"
                          />
                        </th>
                        <th className="py-3 px-4 font-bold">Địa điểm</th>
                        <th className="py-3 px-4 font-bold">Loại</th>
                        <th className="py-3 px-4 font-bold">Đánh giá</th>
                        <th className="py-3 px-4 font-bold">Liên hệ & Địa chỉ</th>
                        <th className="py-3 px-4 font-bold">Mô tả</th>
                        <th className="py-3 px-4 font-bold">Trạng thái</th>
                        <th className="py-3 px-4 font-bold text-right">Thao tác</th>
                      </tr>
                    </thead>
                    <tbody className="divide-y divide-gray-50">
                      {adminRecommendations.map(r => (
                        <tr key={r.id} className="group hover:bg-gray-50/30 transition-colors">
                          <td className="py-3.5 px-4 text-center">
                            <input 
                              type="checkbox"
                              checked={selectedRecIds.includes(r.id)}
                              onChange={(e) => {
                                if (e.target.checked) {
                                  setSelectedRecIds([...selectedRecIds, r.id]);
                                } else {
                                  setSelectedRecIds(selectedRecIds.filter(id => id !== r.id));
                                }
                              }}
                              className="rounded text-blue-600 focus:ring-blue-500 cursor-pointer"
                            />
                          </td>
                          <td className="py-3.5 px-4">
                            <div className="font-bold text-gray-900 text-sm truncate max-w-[150px]" title={r.name}>{r.name}</div>
                            {r.latitude && r.longitude && (
                              <span className="text-[10px] text-gray-400 font-mono">GPS: {r.latitude}, {r.longitude}</span>
                            )}
                          </td>
                          <td className="py-3.5 px-4">
                            <span className="px-2 py-0.5 bg-emerald-50 text-emerald-600 rounded text-[10px] font-black uppercase">
                              {r.type === 'RESTAURANT' ? 'Nhà hàng' : r.type === 'HOTEL' ? 'Khách sạn' : 'Homestay'}
                            </span>
                          </td>
                          <td className="py-3.5 px-4 text-amber-500 text-xs font-bold">
                            {Array.from({ length: r.stars || 5 }).map((_, i) => (
                              <span key={i}>★</span>
                            ))}
                          </td>
                          <td className="py-3.5 px-4 text-xs">
                            {r.phone && <div className="font-semibold">SĐT: {r.phone}</div>}
                            {r.email && <div className="text-gray-500">{r.email}</div>}
                            {r.address && <div className="text-gray-400 truncate max-w-[150px]" title={r.address}>{r.address}</div>}
                          </td>
                          <td className="py-3.5 px-4 text-xs text-gray-500 truncate max-w-[200px]" title={r.description}>
                            {r.description}
                          </td>
                          <td className="py-3.5 px-4">
                            {r.isApproved ? (
                              <span className="px-2 py-1 bg-green-50 text-green-600 text-[10px] font-bold rounded-md border border-green-100 flex items-center gap-1 w-max">
                                <CheckCircle className="w-3 h-3" /> Đã duyệt
                              </span>
                            ) : (
                              <span className="px-2 py-1 bg-amber-50 text-amber-600 text-[10px] font-bold rounded-md border border-amber-100 flex items-center gap-1 w-max">
                                Chờ duyệt
                              </span>
                            )}
                          </td>
                          <td className="py-3.5 px-4 text-right">
                            <div className="flex justify-end gap-1.5">
                              <button
                                onClick={() => handleApproveRecommendation(r.id, !r.isApproved)}
                                className={`px-2.5 py-1.5 rounded-lg text-xs font-bold transition-all cursor-pointer ${
                                  r.isApproved ? 'bg-amber-50 text-amber-600 hover:bg-amber-100' : 'bg-green-600 text-white hover:bg-green-700 shadow-sm'
                                }`}
                              >
                                {r.isApproved ? 'Gỡ' : 'Duyệt'}
                              </button>
                              <button
                                onClick={() => handleDeleteRecommendation(r.id)}
                                className="p-2 bg-red-50 text-red-600 rounded-lg hover:bg-red-100 transition-all cursor-pointer"
                                title="Xóa"
                              >
                                <Trash2 className="w-4 h-4" />
                              </button>
                            </div>
                          </td>
                        </tr>
                      ))}
                    </tbody>
                  </table>
                </div>
              </div>
            )
          ) : activeTab === 'trash' ? (
            trashLoading ? (
              <div className="flex justify-center py-20"><Loader2 className="w-10 h-10 animate-spin text-blue-600" /></div>
            ) : (
              <div className="space-y-4 text-gray-800">
                {/* Retention days setting block */}
                <div className="flex flex-col sm:flex-row gap-4 items-center justify-between bg-gray-50 p-5 rounded-2xl border border-gray-100 text-left">
                  <div className="flex flex-col">
                    <span className="text-sm font-bold text-gray-800">Cấu hình thời gian giữ rác</span>
                    <span className="text-xs text-gray-400 mt-0.5">Số ngày lưu trữ các mục trong thùng rác trước khi tự động xóa vĩnh viễn trên máy chủ.</span>
                  </div>
                  <div className="flex items-center gap-2 shrink-0">
                    <input
                      type="number"
                      min={1}
                      max={365}
                      value={retentionDaysInput}
                      onChange={(e) => setRetentionDaysInput(parseInt(e.target.value) || 30)}
                      className="w-20 px-3 py-1.5 border border-gray-200 rounded-xl text-center text-sm font-bold bg-white"
                    />
                    <span className="text-xs font-bold text-gray-500">ngày</span>
                    <button
                      onClick={handleSaveRetentionDays}
                      className="px-4 py-2 bg-blue-600 hover:bg-blue-700 text-white rounded-xl text-xs font-bold shadow-md transition-all active:scale-95 cursor-pointer flex items-center gap-1"
                    >
                      <Settings className="w-3.5 h-3.5" /> Lưu cấu hình
                    </button>
                  </div>
                </div>

                {/* Empty All Trash button */}
                {(trashData.tours?.length > 0 || trashData.photos?.length > 0 || trashData.notes?.length > 0) && (
                  <div className="bg-red-50 p-4 rounded-2xl border border-red-100">
                    <button
                      onClick={handleEmptyAllTrash}
                      disabled={trashLoading}
                      className="w-full px-4 py-3 bg-red-600 hover:bg-red-700 disabled:bg-gray-400 text-white rounded-xl font-bold text-sm uppercase tracking-wide flex items-center justify-center gap-2 shadow-md transition-all active:scale-95 cursor-pointer"
                    >
                      {trashLoading ? <Loader2 className="w-4 h-4 animate-spin" /> : <Trash2 className="w-4 h-4" />}
                      Làm trống thùng rác ({(trashData.tours?.length || 0) + (trashData.photos?.length || 0) + (trashData.notes?.length || 0)} mục)
                    </button>
                  </div>
                )}

                {/* Sub-tab selection */}
                <div className="flex gap-2 border-b border-gray-100 pb-2">
                  <button
                    onClick={() => {
                      setTrashSubTab('tours');
                      setSelectedTrashIds([]);
                    }}
                    className={`px-4 py-2 rounded-xl text-xs font-bold transition-all cursor-pointer ${
                      trashSubTab === 'tours' ? 'bg-blue-50 text-blue-600 font-extrabold' : 'text-gray-400 hover:bg-gray-50'
                    }`}
                  >
                    Tours rác ({trashData.tours?.length || 0})
                  </button>
                  <button
                    onClick={() => {
                      setTrashSubTab('photos');
                      setSelectedTrashIds([]);
                    }}
                    className={`px-4 py-2 rounded-xl text-xs font-bold transition-all cursor-pointer ${
                      trashSubTab === 'photos' ? 'bg-blue-50 text-blue-600 font-extrabold' : 'text-gray-400 hover:bg-gray-50'
                    }`}
                  >
                    Ảnh rác ({trashData.photos?.length || 0})
                  </button>
                  <button
                    onClick={() => {
                      setTrashSubTab('notes');
                      setSelectedTrashIds([]);
                    }}
                    className={`px-4 py-2 rounded-xl text-xs font-bold transition-all cursor-pointer ${
                      trashSubTab === 'notes' ? 'bg-blue-50 text-blue-600 font-extrabold' : 'text-gray-400 hover:bg-gray-50'
                    }`}
                  >
                    Ghi chú rác ({trashData.notes?.length || 0})
                  </button>
                </div>

                {/* Bulk Actions inside Trash */}
                <div className="flex justify-between items-center bg-gray-50/50 p-4 rounded-2xl border border-gray-100">
                  <span className="text-sm font-bold text-gray-700">
                    Chọn <span className="text-blue-600">{selectedTrashIds.length}</span> mục trong danh mục rác hiện tại
                  </span>
                  {selectedTrashIds.length > 0 && (
                    <div className="flex gap-2">
                      <button
                        onClick={handleRestoreTrash}
                        className="px-4 py-2 bg-emerald-600 hover:bg-emerald-700 text-white rounded-xl font-bold text-xs uppercase tracking-wider flex items-center gap-1.5 shadow-md transition-all active:scale-95 cursor-pointer"
                      >
                        Khôi phục
                      </button>
                      <button
                        onClick={handleDeletePermanentTrash}
                        className="px-4 py-2 bg-red-600 hover:bg-red-700 text-white rounded-xl font-bold text-xs uppercase tracking-wider flex items-center gap-1.5 shadow-md transition-all active:scale-95 cursor-pointer"
                      >
                        Xóa vĩnh viễn
                      </button>
                    </div>
                  )}
                </div>

                {/* Table details */}
                {(!currentTrashList || currentTrashList.length === 0) ? (
                  <div className="text-center py-16 text-gray-400 italic">Thư mục rác trống!</div>
                ) : (
                  <div className="border border-gray-100 rounded-2xl overflow-hidden shadow-sm">
                    <table className="w-full text-left border-collapse bg-white">
                      <thead>
                        <tr className="text-gray-400 text-xs uppercase tracking-wider border-b border-gray-100 bg-gray-50/50">
                          <th className="py-3 px-4 font-bold w-12 text-center">
                            <input 
                              type="checkbox"
                              checked={isAllTrashSelected}
                              onChange={toggleSelectAllTrash}
                              className="rounded text-blue-600 focus:ring-blue-500 cursor-pointer"
                            />
                          </th>
                          <th className="py-3 px-4 font-bold">Đối tượng</th>
                          <th className="py-3 px-4 font-bold">Thông tin chi tiết</th>
                          <th className="py-3 px-4 font-bold">Ngày xóa</th>
                          <th className="py-3 px-4 font-bold text-red-500">Tự động xóa</th>
                        </tr>
                      </thead>
                      <tbody className="divide-y divide-gray-50">
                        {currentTrashList.map((item: any) => {
                          const countdown = getCountdownDays(item.deletedAt, trashData.retentionDays || 30);
                          return (
                            <tr key={item.id} className="group hover:bg-gray-50/30 transition-colors">
                              <td className="py-3.5 px-4 text-center">
                                <input 
                                  type="checkbox"
                                  checked={selectedTrashIds.includes(item.id)}
                                  onChange={(e) => {
                                    if (e.target.checked) {
                                      setSelectedTrashIds([...selectedTrashIds, item.id]);
                                    } else {
                                      setSelectedTrashIds(selectedTrashIds.filter(id => id !== item.id));
                                    }
                                  }}
                                  className="rounded text-blue-600 focus:ring-blue-500 cursor-pointer"
                                />
                              </td>
                              <td className="py-3.5 px-4 text-sm">
                                {trashSubTab === 'photos' ? (
                                  <div className="w-12 h-12 rounded-lg bg-gray-900 overflow-hidden shadow-sm border border-gray-100 flex items-center justify-center">
                                    <img src={item.imageUrl} alt="Trash content" className="w-full h-full object-cover" />
                                  </div>
                                ) : trashSubTab === 'tours' ? (
                                  <div className="font-bold text-gray-900">{item.title}</div>
                                ) : (
                                  <div className="font-bold text-gray-900">{item.title}</div>
                                )}
                              </td>
                              <td className="py-3.5 px-4 text-xs">
                                {trashSubTab === 'tours' ? (
                                  <span className="text-gray-500">Tạo bởi: {item.creator?.name || 'Không rõ'}</span>
                                ) : trashSubTab === 'photos' ? (
                                  <span className="text-gray-500 font-mono truncate block max-w-[200px]" title={item.imageUrl}>
                                    {item.imageUrl} (Tải lên bởi: {item.uploader?.name || 'Ẩn danh'})
                                  </span>
                                ) : (
                                  <div className="space-y-0.5 text-gray-500">
                                    <span>Ghi chú của: {item.user?.name || 'Ẩn danh'}</span>
                                    <span className="block text-[10px] text-blue-500">Thuộc Tour: {item.tour?.title}</span>
                                  </div>
                                )}
                              </td>
                              <td className="py-3.5 px-4 text-xs text-gray-400">
                                {new Date(item.deletedAt).toLocaleDateString('vi-VN')} {new Date(item.deletedAt).toLocaleTimeString('vi-VN', { hour: '2-digit', minute: '2-digit' })}
                              </td>
                              <td className="py-3.5 px-4 text-xs font-bold text-red-500">
                                {countdown > 0 ? `Còn ${countdown} ngày` : 'Sắp bị xóa'}
                              </td>
                            </tr>
                          );
                        })}
                      </tbody>
                    </table>
                  </div>
                )}
              </div>
            )
          ) : null}

          {activeTab === 'reports' && (
            reportsLoading ? (
              <div className="flex justify-center py-20"><Loader2 className="w-10 h-10 animate-spin text-blue-600" /></div>
            ) : reports.length === 0 ? (
              <div className="text-center py-20 text-gray-400 italic">Chưa có báo cáo sai phạm nào.</div>
            ) : (
              <div className="border border-gray-100 rounded-2xl overflow-hidden shadow-sm">
                <table className="w-full text-left border-collapse bg-white">
                  <thead>
                    <tr className="text-gray-400 text-xs uppercase tracking-wider border-b border-gray-100 bg-gray-50/50">
                      <th className="py-3 px-4 font-bold">Đối tượng</th>
                      <th className="py-3 px-4 font-bold">Loại</th>
                      <th className="py-3 px-4 font-bold">Liên hệ & Địa chỉ</th>
                      <th className="py-3 px-4 font-bold">Lý do báo cáo</th>
                      <th className="py-3 px-4 font-bold">Trạng thái</th>
                      <th className="py-3 px-4 font-bold text-right">Thao tác</th>
                    </tr>
                  </thead>
                  <tbody className="divide-y divide-gray-50">
                    {reports.map((item) => (
                      <tr key={item.id} className="group hover:bg-gray-50/50 transition-colors">
                        <td className="py-3 px-4">
                          <div className="font-bold text-gray-900">{item.name}</div>
                          {item.latitude && item.longitude && (
                            <span className="text-[10px] text-gray-400 font-mono block mt-0.5">
                              GPS: {item.latitude}, {item.longitude}
                            </span>
                          )}
                        </td>
                        <td className="py-3 px-4">
                          <span className={`px-2 py-0.5 rounded-full text-[9px] font-black uppercase tracking-wider ${
                            item.type === 'USER' ? 'bg-indigo-50 text-indigo-600' :
                            item.type === 'RESTAURANT' ? 'bg-amber-50 text-amber-600' :
                            item.type === 'HOTEL' ? 'bg-teal-50 text-teal-600' :
                            'bg-purple-50 text-purple-600'
                          }`}>
                            {item.type}
                          </span>
                        </td>
                        <td className="py-3 px-4 text-xs">
                          {item.phone && <div className="text-gray-700 font-semibold">SĐT: {item.phone}</div>}
                          {item.email && <div className="text-gray-500">{item.email}</div>}
                          {item.address && <div className="text-gray-400 truncate max-w-[150px]" title={item.address}>{item.address}</div>}
                        </td>
                        <td className="py-3 px-4 text-xs text-red-600 max-w-[200px] whitespace-pre-wrap font-medium">
                          {item.reason}
                        </td>
                        <td className="py-3 px-4 text-xs font-bold">
                          {item.isBlacklisted ? (
                            <span className="px-2.5 py-1 bg-red-50 text-red-600 rounded-lg border border-red-100 flex items-center gap-1 w-max">
                              <ShieldAlert className="w-3.5 h-3.5" /> Blacklisted
                            </span>
                          ) : (
                            <span className="px-2.5 py-1 bg-gray-50 text-gray-500 rounded-lg border border-gray-100 w-max block">
                              Chờ duyệt
                            </span>
                          )}
                        </td>
                        <td className="py-3 px-4 text-right">
                          <div className="flex justify-end gap-2">
                            <button
                              onClick={() => handleToggleBlacklist(item.id, item.isBlacklisted)}
                              className={`px-3 py-1.5 rounded-xl font-bold text-xs transition-all cursor-pointer ${
                                item.isBlacklisted 
                                  ? 'bg-amber-50 text-amber-600 hover:bg-amber-100' 
                                  : 'bg-red-600 text-white hover:bg-red-700 shadow-md shadow-red-100'
                              }`}
                            >
                              {item.isBlacklisted ? 'Gỡ' : 'Duyệt'}
                            </button>
                            <button
                              onClick={() => handleDeleteReport(item.id)}
                              className="p-2 bg-red-50 text-red-600 rounded-xl hover:bg-red-100 transition-all cursor-pointer"
                              title="Xóa báo cáo"
                            >
                              <Trash2 className="w-4 h-4" />
                            </button>
                          </div>
                        </td>
                      </tr>
                    ))}
                  </tbody>
                </table>
              </div>
            )
          )}

          {activeTab === 'filters' && (
            <div className="space-y-6 text-gray-800">
              <div className="bg-gray-50/50 p-6 rounded-2xl border border-gray-100/80 space-y-4 text-left">
                <h3 className="text-sm font-black uppercase text-blue-600 tracking-wider flex items-center gap-1.5">
                  ⚙️ Cấu hình kiểm duyệt hình ảnh
                </h3>
                
                <div className="flex flex-col sm:flex-row sm:items-center justify-between gap-4 p-4 bg-white rounded-xl border border-gray-100 shadow-sm">
                  <div className="flex flex-col text-left">
                    <span className="text-sm font-bold text-gray-800">Lọc hình ảnh khiêu dâm (NSFW)</span>
                    <span className="text-xs text-gray-400 mt-0.5">Tự động phát hiện và chặn tải lên các hình ảnh có nội dung người lớn nhạy cảm.</span>
                  </div>
                  <button
                    onClick={() => handleUpdateModeration('blockNsfw', !moderationSetting.blockNsfw)}
                    className={`w-14 h-8 rounded-full transition-all relative p-1 cursor-pointer shrink-0 ${
                      moderationSetting.blockNsfw ? 'bg-blue-600' : 'bg-gray-200'
                    }`}
                  >
                    <div className={`w-6 h-6 bg-white rounded-full shadow-md transition-all absolute top-1 ${
                      moderationSetting.blockNsfw ? 'right-1' : 'left-1'
                    }`} />
                  </button>
                </div>

                <div className="flex flex-col sm:flex-row sm:items-center justify-between gap-4 p-4 bg-white rounded-xl border border-gray-100 shadow-sm">
                  <div className="flex flex-col text-left">
                    <span className="text-sm font-bold text-gray-800">Tự động làm mờ khuôn mặt</span>
                    <span className="text-xs text-gray-400 mt-0.5">Tự động nhận diện khuôn mặt người trong ảnh để làm mờ bảo mật trước khi lưu trữ.</span>
                  </div>
                  <button
                    onClick={() => handleUpdateModeration('blurFaces', !moderationSetting.blurFaces)}
                    className={`w-14 h-8 rounded-full transition-all relative p-1 cursor-pointer shrink-0 ${
                      moderationSetting.blurFaces ? 'bg-blue-600' : 'bg-gray-200'
                    }`}
                  >
                    <div className={`w-6 h-6 bg-white rounded-full shadow-md transition-all absolute top-1 ${
                      moderationSetting.blurFaces ? 'right-1' : 'left-1'
                    }`} />
                  </button>
                </div>
              </div>

              <div className="bg-gray-50/50 p-6 rounded-2xl border border-gray-100/80 space-y-4 text-left">
                <h3 className="text-sm font-black uppercase text-blue-600 tracking-wider flex items-center gap-1.5">
                  📝 Cấu hình bộ lọc văn bản
                </h3>

                {/* Add Word Filter Form */}
                <div className="flex flex-col sm:flex-row gap-3 bg-white p-4 rounded-xl border border-gray-100 shadow-sm">
                  <div className="flex-1">
                    <label className="block text-[10px] uppercase font-black text-gray-400 mb-1">Từ cấm</label>
                    <input
                      type="text"
                      placeholder="Nhập từ cấm..."
                      value={newWord}
                      onChange={(e) => setNewWord(e.target.value)}
                      className="w-full px-4 py-2 border border-gray-200 rounded-xl text-sm focus:outline-none focus:ring-1 focus:ring-blue-500 bg-gray-50/20"
                    />
                  </div>
                  <div className="flex-1">
                    <label className="block text-[10px] uppercase font-black text-gray-400 mb-1">Từ thay thế</label>
                    <input
                      type="text"
                      placeholder="Nhập từ thay thế..."
                      value={newReplacement}
                      onChange={(e) => setNewReplacement(e.target.value)}
                      className="w-full px-4 py-2 border border-gray-200 rounded-xl text-sm focus:outline-none focus:ring-1 focus:ring-blue-500 bg-gray-50/20"
                    />
                  </div>
                  <div className="flex items-end">
                    <button
                      onClick={handleAddWordFilter}
                      className="w-full sm:w-auto px-5 py-2 text-white bg-blue-600 hover:bg-blue-700 rounded-xl text-xs font-bold transition-all shadow-md active:scale-95 cursor-pointer h-[38px] flex items-center justify-center shrink-0"
                    >
                      Thêm bộ lọc
                    </button>
                  </div>
                </div>

                {/* Word Filter List */}
                {wordFilters.length === 0 ? (
                  <div className="text-center py-8 text-gray-400 italic text-xs">Chưa cấu hình bộ lọc từ khóa nào.</div>
                ) : (
                  <div className="border border-gray-100 rounded-2xl overflow-hidden shadow-sm bg-white">
                    <table className="w-full text-left border-collapse">
                      <thead>
                        <tr className="text-gray-400 text-xs uppercase border-b border-gray-100 bg-gray-50/30">
                          <th className="py-2.5 px-4 font-bold">Từ cấm</th>
                          <th className="py-2.5 px-4 font-bold">Từ thay thế</th>
                          <th className="py-2.5 px-4 font-bold text-right">Thao tác</th>
                        </tr>
                      </thead>
                      <tbody className="divide-y divide-gray-50">
                        {wordFilters.map((wf) => (
                          <tr key={wf.id} className="hover:bg-gray-50/30">
                            <td className="py-2.5 px-4 text-xs font-bold text-red-500">{wf.word}</td>
                            <td className="py-2.5 px-4 text-xs font-semibold text-green-600">{wf.replacement}</td>
                            <td className="py-2.5 px-4 text-right">
                              <button
                                onClick={() => handleDeleteWordFilter(wf.id)}
                                className="p-1.5 text-gray-400 hover:text-red-500 rounded-lg hover:bg-red-50 transition-colors cursor-pointer"
                              >
                                <Trash2 className="w-3.5 h-3.5" />
                              </button>
                            </td>
                          </tr>
                        ))}
                      </tbody>
                    </table>
                  </div>
                )}
              </div>
            </div>
          )}
        </div>
      </div>
    </div>
  );
};