import React, { useState, useEffect } from 'react';
import { Search, FileText, AlertCircle, Download, Upload, Eye, Filter, CheckCircle, XCircle, Loader, Trash2, Plus } from 'lucide-react';

const API_BASE = process.env.REACT_APP_API_BASE || 'http://localhost:3001/api';
const API_HOST = process.env.REACT_APP_API_HOST || 'http://localhost:3001';

const severityLevels = ['All Severities', 'Critical', 'High', 'Medium', 'Low'];

export default function App() {
  const [searchQuery, setSearchQuery] = useState('');
  const [selectedVendor, setSelectedVendor] = useState('All Vendors');
  const [selectedSeverity, setSelectedSeverity] = useState('All Severities');
  const [selectedCVE, setSelectedCVE] = useState(null);
  const [selectedVendorView, setSelectedVendorView] = useState(null);
  const [selectedDocuments, setSelectedDocuments] = useState([]);
  const [cves, setCves] = useState([]);
  const [vendors, setVendors] = useState(['All Vendors']);
  const [loading, setLoading] = useState(true);
  const [error, setError] = useState(null);
  const [cveDocuments, setCveDocuments] = useState({});
  const [quickCheckCVE, setQuickCheckCVE] = useState('');
  const [quickCheckResult, setQuickCheckResult] = useState(null);
  const [showAddCVE, setShowAddCVE] = useState(false);
  const [newCVE, setNewCVE] = useState({
    cve_id: '',
    vendor: '',
    severity: 'Medium',
    description: '',
    published_date: new Date().toISOString().split('T')[0]
  });
  const [uploadingFile, setUploadingFile] = useState(false);

  // Fetch CVEs from API
  useEffect(() => {
    fetchCVEs();
    fetchVendors();
    // eslint-disable-next-line react-hooks/exhaustive-deps
  }, []);

  // Refetch when filters change
  useEffect(() => {
    fetchCVEs();
    // eslint-disable-next-line react-hooks/exhaustive-deps
  }, [searchQuery, selectedVendor, selectedSeverity]);

  const fetchCVEs = async () => {
    setLoading(true);
    setError(null);
    try {
      const params = new URLSearchParams();
      if (searchQuery) params.append('search', searchQuery);
      if (selectedVendor !== 'All Vendors') params.append('vendor', selectedVendor);
      if (selectedSeverity !== 'All Severities') params.append('severity', selectedSeverity);

      const response = await fetch(`${API_BASE}/cves?${params}`);
      if (!response.ok) throw new Error('Failed to fetch CVEs');
      const data = await response.json();
      setCves(data);
    } catch (err) {
      setError(err.message);
      console.error('Error fetching CVEs:', err);
    } finally {
      setLoading(false);
    }
  };

  const fetchVendors = async () => {
    try {
      const response = await fetch(`${API_BASE}/vendors`);
      if (!response.ok) throw new Error('Failed to fetch vendors');
      const data = await response.json();
      setVendors(['All Vendors', ...data]);
    } catch (err) {
      console.error('Error fetching vendors:', err);
    }
  };

  const fetchDocuments = async (cveId, vendor) => {
    const key = `${cveId}-${vendor}`;
    if (cveDocuments[key]) return;
    
    try {
      const response = await fetch(`${API_BASE}/cves/${cveId}/documents?vendor=${vendor}`);
      if (!response.ok) throw new Error('Failed to fetch documents');
      const data = await response.json();
      setCveDocuments(prev => ({ ...prev, [key]: data }));
    } catch (err) {
      console.error('Error fetching documents:', err);
    }
  };

  const quickCheckCVEStatus = async () => {
    if (!quickCheckCVE.trim()) return;
    
    try {
      const response = await fetch(`${API_BASE}/cves/check/${quickCheckCVE.trim()}`);
      if (!response.ok) throw new Error('Failed to check CVE');
      const data = await response.json();
      setQuickCheckResult(data);
    } catch (err) {
      console.error('Error checking CVE:', err);
      setQuickCheckResult({ error: err.message });
    }
  };

  const handleViewDocuments = async (cveId, vendor) => {
    const key = `${cveId}-${vendor}`;
    if (selectedCVE === cveId && selectedVendorView === vendor) {
      setSelectedCVE(null);
      setSelectedVendorView(null);
    } else {
      setSelectedCVE(cveId);
      setSelectedVendorView(vendor);
      await fetchDocuments(cveId, vendor);
    }
  };

  const getSeverityColor = (severity) => {
    const colors = {
      'Critical': 'bg-red-100 text-red-800',
      'High': 'bg-orange-100 text-orange-800',
      'Medium': 'bg-yellow-100 text-yellow-800',
      'Low': 'bg-blue-100 text-blue-800'
    };
    return colors[severity] || 'bg-gray-100 text-gray-800';
  };

  const toggleDocumentSelection = (docId) => {
    setSelectedDocuments(prev => 
      prev.includes(docId) 
        ? prev.filter(id => id !== docId)
        : [...prev, docId]
    );
  };

  const exportSelectedDocuments = () => {
    alert(`Exporting ${selectedDocuments.length} documents for report attachment`);
  };

  const handleAddCVE = async (e) => {
    e.preventDefault();
    try {
      const response = await fetch(`${API_BASE}/cves`, {
        method: 'POST',
        headers: { 'Content-Type': 'application/json' },
        body: JSON.stringify(newCVE)
      });
      
      if (!response.ok) {
        const data = await response.json();
        throw new Error(data.error || 'Failed to add CVE');
      }
      
      alert(`CVE ${newCVE.cve_id} added successfully for vendor: ${newCVE.vendor}!`);
      setShowAddCVE(false);
      setNewCVE({
        cve_id: '',
        vendor: '',
        severity: 'Medium',
        description: '',
        published_date: new Date().toISOString().split('T')[0]
      });
      fetchCVEs();
    } catch (err) {
      alert(`Error: ${err.message}`);
    }
  };

  const handleFileUpload = async (cveId, vendor) => {
    const fileInput = document.createElement('input');
    fileInput.type = 'file';
    fileInput.accept = '.pdf,.png,.jpg,.jpeg,.txt,.doc,.docx';
    
    fileInput.onchange = async (e) => {
      const file = e.target.files[0];
      if (!file) return;
      
      const docType = prompt(
        'Document type (advisory, email, screenshot, patch, other):',
        'advisory'
      );
      if (!docType) return;
      
      const notes = prompt('Notes (optional):');
      
      setUploadingFile(true);
      
      const formData = new FormData();
      formData.append('file', file);
      formData.append('cveId', cveId);
      formData.append('vendor', vendor);
      formData.append('type', docType);
      if (notes) formData.append('notes', notes);
      
      try {
        const response = await fetch(`${API_BASE}/cves/${cveId}/documents`, {
          method: 'POST',
          body: formData
        });
        
        if (!response.ok) throw new Error('Failed to upload document');
        
        alert(`Document uploaded successfully!`);
        const key = `${cveId}-${vendor}`;
        delete cveDocuments[key];
        await fetchDocuments(cveId, vendor);
        fetchCVEs();
      } catch (err) {
        alert(`Error: ${err.message}`);
      } finally {
        setUploadingFile(false);
      }
    };
    
    fileInput.click();
  };

  const handleDeleteDocument = async (docId, cveId, vendor) => {
    if (!window.confirm('Are you sure you want to delete this document?')) {
      return;
    }
    
    try {
      const response = await fetch(`${API_BASE}/documents/${docId}`, {
        method: 'DELETE'
      });
      
      if (!response.ok) throw new Error('Failed to delete document');
      
      alert('Document deleted successfully!');
      const key = `${cveId}-${vendor}`;
      delete cveDocuments[key];
      await fetchDocuments(cveId, vendor);
      fetchCVEs();
    } catch (err) {
      alert(`Error: ${err.message}`);
    }
  };

  // Group CVEs by CVE ID
  const groupedCVEs = cves.reduce((acc, cve) => {
    if (!acc[cve.cve_id]) {
      acc[cve.cve_id] = [];
    }
    acc[cve.cve_id].push(cve);
    return acc;
  }, {});

  const filteredGroupedCVEs = groupedCVEs;

  return (
    <div className="min-h-screen bg-gray-100 p-6">
      <div className="max-w-7xl mx-auto">
        {/* Header */}
        <div className="mb-8 flex justify-between items-center">
          <div>
            <h1 className="text-3xl font-bold text-gray-900 mb-2">CVE Dashboard</h1>
            <p className="text-gray-600">Query vulnerabilities, manage vendors, and attach documentation</p>
          </div>
          <button
            onClick={() => setShowAddCVE(true)}
            className="px-4 py-2 bg-[#0476D9] text-white rounded-lg hover:bg-[#0360B8] transition-colors flex items-center gap-2 shadow-md"
          >
            <Plus className="w-5 h-5" />
            Add CVE/Vendor
          </button>
        </div>

        {/* Add CVE Modal */}
        {showAddCVE && (
          <div className="fixed inset-0 bg-black bg-opacity-50 flex items-center justify-center z-50 p-4">
            <div className="bg-white rounded-lg shadow-xl max-w-2xl w-full max-h-[90vh] overflow-y-auto">
              <div className="p-6">
                <div className="flex justify-between items-center mb-4">
                  <h2 className="text-2xl font-bold text-gray-900">Add CVE Entry</h2>
                  <button
                    onClick={() => setShowAddCVE(false)}
                    className="text-gray-400 hover:text-gray-600"
                  >
                    <XCircle className="w-6 h-6" />
                  </button>
                </div>
                
                <div className="mb-4 p-3 bg-blue-50 border border-blue-200 rounded-lg">
                  <p className="text-sm text-blue-800">
                    <strong>Tip:</strong> You can add the same CVE-ID multiple times with different vendors. 
                    Each vendor will have its own documents folder.
                  </p>
                </div>

                <form onSubmit={handleAddCVE} className="space-y-4">
                  <div>
                    <label className="block text-sm font-medium text-gray-700 mb-1">
                      CVE ID *
                    </label>
                    <input
                      type="text"
                      required
                      placeholder="CVE-2024-1234"
                      value={newCVE.cve_id}
                      onChange={(e) => setNewCVE({...newCVE, cve_id: e.target.value.toUpperCase()})}
                      className="w-full px-4 py-2 border border-gray-300 rounded-lg focus:ring-2 focus:ring-[#0476D9] focus:border-transparent"
                    />
                    <p className="text-xs text-gray-500 mt-1">Can be the same as existing CVE if adding another vendor</p>
                  </div>
                  
                  <div>
                    <label className="block text-sm font-medium text-gray-700 mb-1">
                      Vendor *
                    </label>
                    <input
                      type="text"
                      required
                      placeholder="Microsoft, Cisco, Oracle, etc."
                      value={newCVE.vendor}
                      onChange={(e) => setNewCVE({...newCVE, vendor: e.target.value})}
                      className="w-full px-4 py-2 border border-gray-300 rounded-lg focus:ring-2 focus:ring-[#0476D9] focus:border-transparent"
                    />
                    <p className="text-xs text-gray-500 mt-1">Must be unique for this CVE-ID</p>
                  </div>
                  
                  <div>
                    <label className="block text-sm font-medium text-gray-700 mb-1">
                      Severity *
                    </label>
                    <select
                      value={newCVE.severity}
                      onChange={(e) => setNewCVE({...newCVE, severity: e.target.value})}
                      className="w-full px-4 py-2 border border-gray-300 rounded-lg focus:ring-2 focus:ring-[#0476D9] focus:border-transparent"
                    >
                      <option value="Critical">Critical</option>
                      <option value="High">High</option>
                      <option value="Medium">Medium</option>
                      <option value="Low">Low</option>
                    </select>
                  </div>
                  
                  <div>
                    <label className="block text-sm font-medium text-gray-700 mb-1">
                      Description *
                    </label>
                    <textarea
                      required
                      placeholder="Brief description of the vulnerability"
                      value={newCVE.description}
                      onChange={(e) => setNewCVE({...newCVE, description: e.target.value})}
                      rows={3}
                      className="w-full px-4 py-2 border border-gray-300 rounded-lg focus:ring-2 focus:ring-[#0476D9] focus:border-transparent"
                    />
                  </div>
                  
                  <div>
                    <label className="block text-sm font-medium text-gray-700 mb-1">
                      Published Date *
                    </label>
                    <input
                      type="date"
                      required
                      value={newCVE.published_date}
                      onChange={(e) => setNewCVE({...newCVE, published_date: e.target.value})}
                      className="w-full px-4 py-2 border border-gray-300 rounded-lg focus:ring-2 focus:ring-[#0476D9] focus:border-transparent"
                    />
                  </div>
                  
                  <div className="flex gap-3 pt-4">
                    <button
                      type="submit"
                      className="flex-1 px-4 py-2 bg-[#0476D9] text-white rounded-lg hover:bg-[#0360B8] transition-colors font-medium shadow-md"
                    >
                      Add CVE Entry
                    </button>
                    <button
                      type="button"
                      onClick={() => setShowAddCVE(false)}
                      className="px-4 py-2 bg-gray-200 text-gray-700 rounded-lg hover:bg-gray-300 transition-colors"
                    >
                      Cancel
                    </button>
                  </div>
                </form>
              </div>
            </div>
          </div>
        )}

        {/* Quick Check */}
        <div className="bg-gradient-to-r from-blue-50 to-blue-100 rounded-lg shadow-md p-6 mb-6 border-2 border-[#0476D9]">
          <h2 className="text-lg font-semibold text-gray-900 mb-3">Quick CVE Status Check</h2>
          <div className="flex gap-3">
            <input
              type="text"
              placeholder="Enter CVE ID (e.g., CVE-2024-1234)"
              value={quickCheckCVE}
              onChange={(e) => setQuickCheckCVE(e.target.value)}
              onKeyPress={(e) => e.key === 'Enter' && quickCheckCVEStatus()}
              className="flex-1 px-4 py-2 border border-gray-300 rounded-lg focus:ring-2 focus:ring-[#0476D9] focus:border-transparent"
            />
            <button
              onClick={quickCheckCVEStatus}
              className="px-6 py-2 bg-[#0476D9] text-white rounded-lg hover:bg-[#0360B8] transition-colors font-medium shadow-md"
            >
              Check Status
            </button>
          </div>
          
          {quickCheckResult && (
            <div className={`mt-4 p-4 rounded-lg ${quickCheckResult.exists ? 'bg-green-50 border border-green-200' : 'bg-yellow-50 border border-yellow-200'}`}>
              {quickCheckResult.error ? (
                <div className="flex items-start gap-3">
                  <XCircle className="w-5 h-5 text-red-600 mt-0.5" />
                  <div>
                    <p className="font-medium text-red-900">Error</p>
                    <p className="text-sm text-red-700">{quickCheckResult.error}</p>
                  </div>
                </div>
              ) : quickCheckResult.exists ? (
                <div className="flex items-start gap-3">
                  <CheckCircle className="w-5 h-5 text-green-600 mt-0.5" />
                  <div className="flex-1">
                    <p className="font-medium text-green-900">✓ CVE Addressed ({quickCheckResult.vendors.length} vendor{quickCheckResult.vendors.length > 1 ? 's' : ''})</p>
                    <div className="mt-3 space-y-3">
                      {quickCheckResult.vendors.map((vendorInfo, idx) => (
                        <div key={idx} className="p-3 bg-white rounded border border-green-200">
                          <p className="font-semibold text-gray-900 mb-2">{vendorInfo.vendor}</p>
                          <div className="grid grid-cols-2 gap-2 text-sm text-gray-700 mb-2">
                            <p><strong>Severity:</strong> {vendorInfo.severity}</p>
                            <p><strong>Status:</strong> {vendorInfo.status}</p>
                            <p><strong>Documents:</strong> {vendorInfo.total_documents} attached</p>
                          </div>
                          <div className="flex gap-2 flex-wrap">
                            <span className={`px-2 py-1 rounded text-xs font-medium ${vendorInfo.compliance.advisory ? 'bg-green-100 text-green-800' : 'bg-red-100 text-red-800'}`}>
                              {vendorInfo.compliance.advisory ? '✓' : '✗'} Advisory
                            </span>
                            <span className={`px-2 py-1 rounded text-xs font-medium ${vendorInfo.compliance.email ? 'bg-green-100 text-green-800' : 'bg-gray-100 text-gray-600'}`}>
                              {vendorInfo.compliance.email ? '✓' : '○'} Email
                            </span>
                            <span className={`px-2 py-1 rounded text-xs font-medium ${vendorInfo.compliance.screenshot ? 'bg-green-100 text-green-800' : 'bg-gray-100 text-gray-600'}`}>
                              {vendorInfo.compliance.screenshot ? '✓' : '○'} Screenshot
                            </span>
                          </div>
                        </div>
                      ))}
                    </div>
                  </div>
                </div>
              ) : (
                <div className="flex items-start gap-3">
                  <AlertCircle className="w-5 h-5 text-yellow-600 mt-0.5" />
                  <div>
                    <p className="font-medium text-yellow-900">Not Found</p>
                    <p className="text-sm text-yellow-700">This CVE has not been addressed yet. No entry exists in the database.</p>
                  </div>
                </div>
              )}
            </div>
          )}
        </div>

        {/* Search and Filters */}
        <div className="bg-white rounded-lg shadow-md p-6 mb-6">
          <div className="grid grid-cols-1 md:grid-cols-3 gap-4">
            <div className="md:col-span-1">
              <label className="block text-sm font-medium text-gray-700 mb-2">
                <Search className="inline w-4 h-4 mr-1" />
                Search CVEs
              </label>
              <input
                type="text"
                placeholder="CVE ID or description..."
                value={searchQuery}
                onChange={(e) => setSearchQuery(e.target.value)}
                className="w-full px-4 py-2 border border-gray-300 rounded-lg focus:ring-2 focus:ring-[#0476D9] focus:border-transparent"
              />
            </div>
            
            <div>
              <label className="block text-sm font-medium text-gray-700 mb-2">
                <Filter className="inline w-4 h-4 mr-1" />
                Vendor
              </label>
              <select
                value={selectedVendor}
                onChange={(e) => setSelectedVendor(e.target.value)}
                className="w-full px-4 py-2 border border-gray-300 rounded-lg focus:ring-2 focus:ring-[#0476D9] focus:border-transparent"
              >
                {vendors.map(vendor => (
                  <option key={vendor} value={vendor}>{vendor}</option>
                ))}
              </select>
            </div>
            
            <div>
              <label className="block text-sm font-medium text-gray-700 mb-2">
                <AlertCircle className="inline w-4 h-4 mr-1" />
                Severity
              </label>
              <select
                value={selectedSeverity}
                onChange={(e) => setSelectedSeverity(e.target.value)}
                className="w-full px-4 py-2 border border-gray-300 rounded-lg focus:ring-2 focus:ring-[#0476D9] focus:border-transparent"
              >
                {severityLevels.map(level => (
                  <option key={level} value={level}>{level}</option>
                ))}
              </select>
            </div>
          </div>
        </div>

        {/* Results Summary */}
        <div className="mb-4 flex justify-between items-center">
          <p className="text-gray-600">
            Found {Object.keys(filteredGroupedCVEs).length} CVE{Object.keys(filteredGroupedCVEs).length !== 1 ? 's' : ''} 
            ({cves.length} vendor entr{cves.length !== 1 ? 'ies' : 'y'})
          </p>
          {selectedDocuments.length > 0 && (
            <button
              onClick={exportSelectedDocuments}
              className="flex items-center gap-2 px-4 py-2 bg-[#0476D9] text-white rounded-lg hover:bg-[#0360B8] transition-colors shadow-md"
            >
              <Download className="w-4 h-4" />
              Export {selectedDocuments.length} Document{selectedDocuments.length !== 1 ? 's' : ''} for Report
            </button>
          )}
        </div>

        {/* CVE List - Grouped by CVE ID */}
        {loading ? (
          <div className="bg-white rounded-lg shadow-md p-12 text-center">
            <Loader className="w-12 h-12 text-[#0476D9] mx-auto mb-4 animate-spin" />
            <p className="text-gray-600">Loading CVEs...</p>
          </div>
        ) : error ? (
          <div className="bg-white rounded-lg shadow-md p-12 text-center">
            <XCircle className="w-12 h-12 text-red-500 mx-auto mb-4" />
            <h3 className="text-lg font-medium text-gray-900 mb-2">Error Loading CVEs</h3>
            <p className="text-gray-600 mb-4">{error}</p>
            <button 
              onClick={fetchCVEs}
              className="px-4 py-2 bg-[#0476D9] text-white rounded-lg hover:bg-[#0360B8] shadow-md"
            >
              Retry
            </button>
          </div>
        ) : (
          <div className="space-y-4">
            {Object.entries(filteredGroupedCVEs).map(([cveId, vendorEntries]) => (
              <div key={cveId} className="bg-white rounded-lg shadow-md border-2 border-gray-200">
                <div className="p-6">
                  {/* CVE Header */}
                  <div className="mb-4">
                    <h3 className="text-2xl font-bold text-gray-900 mb-2">{cveId}</h3>
                    <p className="text-gray-600 mb-3">{vendorEntries[0].description}</p>
                    <div className="flex items-center gap-2 text-sm text-gray-500">
                      <span>Published: {vendorEntries[0].published_date}</span>
                      <span>•</span>
                      <span>{vendorEntries.length} affected vendor{vendorEntries.length > 1 ? 's' : ''}</span>
                    </div>
                  </div>

                  {/* Vendor Entries */}
                  <div className="space-y-3">
                    {vendorEntries.map((cve) => {
                      const key = `${cve.cve_id}-${cve.vendor}`;
                      const documents = cveDocuments[key] || [];
                      const isExpanded = selectedCVE === cve.cve_id && selectedVendorView === cve.vendor;
                      
                      return (
                        <div key={cve.id} className="border border-gray-200 rounded-lg p-4 bg-gray-50">
                          <div className="flex justify-between items-start">
                            <div className="flex-1">
                              <div className="flex items-center gap-3 mb-2">
                                <h4 className="text-lg font-semibold text-gray-900">{cve.vendor}</h4>
                                <span className={`px-3 py-1 rounded-full text-sm font-medium ${getSeverityColor(cve.severity)}`}>
                                  {cve.severity}
                                </span>
                                <span className={`px-3 py-1 rounded-full text-xs font-medium ${cve.doc_status === 'Complete' ? 'bg-green-100 text-green-800' : 'bg-yellow-100 text-yellow-800'}`}>
                                  {cve.doc_status === 'Complete' ? '✓ Docs Complete' : '⚠ Incomplete'}
                                </span>
                              </div>
                              <div className="flex items-center gap-4 text-sm text-gray-500">
                                <span>Status: <span className="font-medium text-gray-700">{cve.status}</span></span>
                                <span className="flex items-center gap-1">
                                  <FileText className="w-4 h-4" />
                                  {cve.document_count} document{cve.document_count !== 1 ? 's' : ''}
                                </span>
                              </div>
                            </div>
                            <button
                              onClick={() => handleViewDocuments(cve.cve_id, cve.vendor)}
                              className="px-4 py-2 text-[#0476D9] hover:bg-blue-50 rounded-lg transition-colors flex items-center gap-2 border border-[#0476D9]"
                            >
                              <Eye className="w-4 h-4" />
                              {isExpanded ? 'Hide' : 'View'} Documents
                            </button>
                          </div>

                          {/* Documents Section */}
                          {isExpanded && (
                            <div className="mt-4 pt-4 border-t border-gray-300">
                              <h5 className="text-sm font-semibold text-gray-700 mb-3 flex items-center gap-2">
                                <FileText className="w-4 h-4" />
                                Documents for {cve.vendor} ({documents.length})
                              </h5>
                              {documents.length > 0 ? (
                                <div className="space-y-2">
                                  {documents.map(doc => (
                                    <div
                                      key={doc.id}
                                      className="flex items-center justify-between p-3 bg-white rounded-lg hover:bg-gray-50 transition-colors border border-gray-200"
                                    >
                                      <div className="flex items-center gap-3 flex-1">
                                        <input
                                          type="checkbox"
                                          checked={selectedDocuments.includes(doc.id)}
                                          onChange={() => toggleDocumentSelection(doc.id)}
                                          className="w-4 h-4 text-[#0476D9] rounded focus:ring-2 focus:ring-[#0476D9]"
                                        />
                                        <FileText className="w-5 h-5 text-gray-400" />
                                        <div className="flex-1">
                                          <p className="text-sm font-medium text-gray-900">{doc.name}</p>
                                          <p className="text-xs text-gray-500 capitalize">
                                            {doc.type} • {doc.file_size}
                                            {doc.notes && ` • ${doc.notes}`}
                                          </p>
                                        </div>
                                      </div>
                                      <div className="flex gap-2">
                                        <a
                                          href={`${API_HOST}/${doc.file_path}`}
                                          target="_blank"
                                          rel="noopener noreferrer"
                                          className="px-3 py-1 text-sm text-[#0476D9] hover:bg-blue-50 rounded transition-colors border border-[#0476D9]"
                                        >
                                          View
                                        </a>
                                        <button
                                          onClick={() => handleDeleteDocument(doc.id, cve.cve_id, cve.vendor)}
                                          className="px-3 py-1 text-sm text-red-600 hover:bg-red-50 rounded transition-colors border border-red-600 flex items-center gap-1"
                                        >
                                          <Trash2 className="w-3 h-3" />
                                          Delete
                                        </button>
                                      </div>
                                    </div>
                                  ))}
                                </div>
                              ) : (
                                <p className="text-sm text-gray-500 italic">No documents attached yet</p>
                              )}
                              <button 
                                onClick={() => handleFileUpload(cve.cve_id, cve.vendor)}
                                disabled={uploadingFile}
                                className="mt-3 px-4 py-2 text-sm text-gray-600 hover:bg-gray-100 rounded-lg transition-colors flex items-center gap-2 disabled:opacity-50 border border-gray-300"
                              >
                                <Upload className="w-4 h-4" />
                                {uploadingFile ? 'Uploading...' : 'Upload Document'}
                              </button>
                            </div>
                          )}
                        </div>
                      );
                    })}
                  </div>
                </div>
              </div>
            ))}
          </div>
        )}

        {Object.keys(filteredGroupedCVEs).length === 0 && !loading && (
          <div className="bg-white rounded-lg shadow-md p-12 text-center">
            <AlertCircle className="w-12 h-12 text-gray-400 mx-auto mb-4" />
            <h3 className="text-lg font-medium text-gray-900 mb-2">No CVEs Found</h3>
            <p className="text-gray-600">Try adjusting your search criteria or filters</p>
          </div>
        )}
      </div>
    </div>
  );
}