(대표님) 커버, 데이터룸, 파일매니저, 담당자할당 등

4 files changed, 2173 insertions, 488 deletions

diff --git a/components/file-manager/FileManager copy.tsx b/components/file-manager/FileManager copy.tsx
new file mode 100644
index 00000000..3f3d73a4
--- /dev/null
+++ b/components/file-manager/FileManager copy.tsx
@@ -0,0 +1,1852 @@
+'use client';
+
+import React, { useState, useEffect, useCallback } from 'react';
+import {
+  Folder,
+  File,
+  FolderPlus,
+  Upload,
+  Trash2,
+  Edit2,
+  Download,
+  Share2,
+  Eye,
+  EyeOff,
+  Lock,
+  Unlock,
+  Globe,
+  Shield,
+  AlertCircle,
+  MoreVertical,
+  ChevronRight,
+  ChevronDown,
+  Search,
+  Grid,
+  List,
+  Copy,
+  X
+} from 'lucide-react';
+import {
+  ContextMenu,
+  ContextMenuContent,
+  ContextMenuItem,
+  ContextMenuTrigger,
+  ContextMenuSeparator,
+  ContextMenuSub,
+  ContextMenuSubContent,
+  ContextMenuSubTrigger,
+} from '@/components/ui/context-menu';
+import {
+  DropdownMenu,
+  DropdownMenuContent,
+  DropdownMenuItem,
+  DropdownMenuTrigger,
+  DropdownMenuSeparator,
+  DropdownMenuSub,
+  DropdownMenuSubContent,
+  DropdownMenuSubTrigger,
+} from '@/components/ui/dropdown-menu';
+import { Button } from '@/components/ui/button';
+import { Input } from '@/components/ui/input';
+import {
+  Dialog,
+  DialogContent,
+  DialogHeader,
+  DialogTitle,
+  DialogFooter,
+  DialogDescription,
+} from '@/components/ui/dialog';
+import {
+  Select,
+  SelectContent,
+  SelectItem,
+  SelectTrigger,
+  SelectValue,
+} from '@/components/ui/select';
+import { ScrollArea } from '@/components/ui/scroll-area';
+import { Badge } from '@/components/ui/badge';
+import { Breadcrumb, BreadcrumbItem, BreadcrumbLink, BreadcrumbList } from '@/components/ui/breadcrumb';
+import { useToast } from '@/hooks/use-toast';
+import { Tabs, TabsContent, TabsList, TabsTrigger } from '@/components/ui/tabs';
+import { Label } from '@/components/ui/label';
+import { Switch } from '@/components/ui/switch';
+import { cn } from '@/lib/utils';
+import { useSession } from 'next-auth/react';
+import {
+  Dropzone,
+  DropzoneDescription,
+  DropzoneInput,
+  DropzoneTitle,
+  DropzoneUploadIcon,
+  DropzoneZone,
+} from "@/components/ui/dropzone";
+import {
+  FileList,
+  FileListAction,
+  FileListDescription,
+  FileListHeader,
+  FileListIcon,
+  FileListInfo,
+  FileListItem,
+  FileListName,
+  FileListSize,
+} from "@/components/ui/file-list";
+import { decryptWithServerAction } from '@/components/drm/drmUtils';
+import { Progress } from '@/components/ui/progress';
+// Import the secure viewer component
+import { SecurePDFViewer } from './SecurePDFViewer';
+
+interface FileItem {
+  id: string;
+  name: string;
+  type: 'file' | 'folder';
+  size?: number;
+  mimeType?: string;
+  category: 'public' | 'restricted' | 'confidential' | 'internal';
+  externalAccessLevel?: 'view_only' | 'view_download' | 'full_access';
+  updatedAt: Date;
+  permissions?: {
+    canView: boolean;
+    canDownload: boolean;
+    canEdit: boolean;
+    canDelete: boolean;
+  };
+  downloadCount?: number;
+  viewCount?: number;
+  parentId?: string | null;
+  children?: FileItem[];
+}
+
+interface UploadingFile {
+  file: File;
+  progress: number;
+  status: 'pending' | 'uploading' | 'processing' | 'completed' | 'error';
+  error?: string;
+}
+
+interface FileManagerProps {
+  projectId: string;
+}
+
+// Category configuration with icons and colors
+const categoryConfig = {
+  public: { icon: Globe, color: 'text-green-500', label: 'Public' },
+  restricted: { icon: Eye, color: 'text-yellow-500', label: 'Restricted' },
+  confidential: { icon: Lock, color: 'text-red-500', label: 'Confidential' },
+  internal: { icon: Shield, color: 'text-blue-500', label: 'Internal' },
+};
+
+// Tree Item Component
+const TreeItem: React.FC<{
+  item: FileItem;
+  level: number;
+  expandedFolders: Set<string>;
+  selectedItems: Set<string>;
+  onToggleExpand: (id: string) => void;
+  onSelectItem: (id: string) => void;
+  onDoubleClick: (item: FileItem) => void;
+  onView: (item: FileItem) => void;
+  onDownload: (item: FileItem) => void;
+  onDownloadFolder: (item: FileItem) => void;
+  onDelete: (ids: string[]) => void;
+  onShare: (item: FileItem) => void;
+  onRename: (item: FileItem) => void;
+  isInternalUser: boolean;
+}> = ({
+  item,
+  level,
+  expandedFolders,
+  selectedItems,
+  onToggleExpand,
+  onSelectItem,
+  onDoubleClick,
+  onView,
+  onDownload,
+  onDownloadFolder,
+  onDelete,
+  onShare,
+  onRename,
+  isInternalUser
+}) => {
+    const hasChildren = item.type === 'folder' && item.children && item.children.length > 0;
+    const isExpanded = expandedFolders.has(item.id);
+    const isSelected = selectedItems.has(item.id);
+    const CategoryIcon = categoryConfig[item.category].icon;
+    const categoryColor = categoryConfig[item.category].color;
+    const categoryLabel = categoryConfig[item.category].label;
+
+    const formatFileSize = (bytes?: number) => {
+      if (!bytes) return '-';
+      const sizes = ['B', 'KB', 'MB', 'GB'];
+      const i = Math.floor(Math.log(bytes) / Math.log(1024));
+      return `${(bytes / Math.pow(1024, i)).toFixed(1)} ${sizes[i]}`;
+    };
+
+    return (
+      <>
+        <div
+          className={cn(
+            "flex items-center p-2 rounded-lg cursor-pointer transition-colors",
+            "hover:bg-accent",
+            isSelected && "bg-accent"
+          )}
+          style={{ paddingLeft: `${level * 24 + 8}px` }}
+          onClick={() => onSelectItem(item.id)}
+          onDoubleClick={() => onDoubleClick(item)}
+        >
+          <div className="flex items-center mr-2">
+            {item.type === 'folder' && (
+              <button
+                onClick={(e) => {
+                  e.stopPropagation();
+                  onToggleExpand(item.id);
+                }}
+                className="p-0.5 hover:bg-gray-200 rounded"
+              >
+                {isExpanded ? (
+                  <ChevronDown className="h-4 w-4" />
+                ) : (
+                  <ChevronRight className="h-4 w-4" />
+                )}
+              </button>
+            )}
+            {item.type === 'file' && (
+              <div className="w-5" />
+            )}
+          </div>
+
+          {item.type === 'folder' ? (
+            <Folder className="h-5 w-5 text-blue-500 mr-2" />
+          ) : (
+            <File className="h-5 w-5 text-gray-500 mr-2" />
+          )}
+
+          <span className="flex-1">{item.name}</span>
+
+          <Badge variant="outline" className="mr-2">
+            <CategoryIcon className={cn("h-3 w-3 mr-1", categoryColor)} />
+            {categoryLabel}
+          </Badge>
+
+          <span className="text-sm text-muted-foreground mr-4">
+            {formatFileSize(item.size)}
+          </span>
+          <span className="text-sm text-muted-foreground mr-2">
+            {new Date(item.updatedAt).toLocaleDateString()}
+          </span>
+
+          <DropdownMenu>
+            <DropdownMenuTrigger asChild>
+              <Button variant="ghost" size="sm">
+                <MoreVertical className="h-4 w-4" />
+              </Button>
+            </DropdownMenuTrigger>
+            <DropdownMenuContent>
+              {item.type === 'file' && (
+                <>
+                  <DropdownMenuItem onClick={() => onView(item)}>
+                    <Eye className="h-4 w-4 mr-2" />
+                    View
+                  </DropdownMenuItem>
+                  {item.permissions?.canDownload && (
+                    <DropdownMenuItem onClick={() => onDownload(item)}>
+                      <Download className="h-4 w-4 mr-2" />
+                      Download
+                    </DropdownMenuItem>
+                  )}
+                </>
+              )}
+
+              {item.type === 'folder' && (
+                <DropdownMenuItem onClick={() => onDownloadFolder(item)}>
+                  <Download className="h-4 w-4 mr-2" />
+                  Download Folder
+                </DropdownMenuItem>
+              )}
+
+              {isInternalUser && (
+                <>
+                  <DropdownMenuItem onClick={() => onShare(item)}>
+                    <Share2 className="h-4 w-4 mr-2" />
+                    Share
+                  </DropdownMenuItem>
+
+                  {item.permissions?.canEdit && (
+                    <DropdownMenuItem onClick={() => onRename(item)}>
+                      <Edit2 className="h-4 w-4 mr-2" />
+                      Rename
+                    </DropdownMenuItem>
+                  )}
+                </>
+              )}
+
+              {item.permissions?.canDelete && (
+                <>
+                  <DropdownMenuSeparator />
+                  <DropdownMenuItem
+                    className="text-destructive"
+                    onClick={() => onDelete([item.id])}
+                  >
+                    <Trash2 className="h-4 w-4 mr-2" />
+                    Delete
+                  </DropdownMenuItem>
+                </>
+              )}
+            </DropdownMenuContent>
+          </DropdownMenu>
+        </div>
+
+        {item.type === 'folder' && isExpanded && item.children && (
+          <div>
+            {item.children.map((child) => (
+              <TreeItem
+                key={child.id}
+                item={child}
+                level={level + 1}
+                expandedFolders={expandedFolders}
+                selectedItems={selectedItems}
+                onToggleExpand={onToggleExpand}
+                onSelectItem={onSelectItem}
+                onDoubleClick={onDoubleClick}
+                onView={onView}
+                onDownload={onDownload}
+                onDownloadFolder={onDownloadFolder}
+                onDelete={onDelete}
+                onShare={onShare}
+                onRename={onRename}
+                isInternalUser={isInternalUser}
+              />
+            ))}
+          </div>
+        )}
+      </>
+    );
+  };
+
+export function FileManager({ projectId }: FileManagerProps) {
+  const { data: session } = useSession();
+  const [items, setItems] = useState<FileItem[]>([]);
+  const [treeItems, setTreeItems] = useState<FileItem[]>([]);
+  const [currentPath, setCurrentPath] = useState<string[]>([]);
+  const [currentParentId, setCurrentParentId] = useState<string | null>(null);
+  const [selectedItems, setSelectedItems] = useState<Set<string>>(new Set());
+  const [expandedFolders, setExpandedFolders] = useState<Set<string>>(new Set());
+  const [viewMode, setViewMode] = useState<'grid' | 'list'>('list');
+  const [searchQuery, setSearchQuery] = useState('');
+  const [loading, setLoading] = useState(false);
+
+  console.log(items, "items")
+
+  // Upload states
+  const [uploadDialogOpen, setUploadDialogOpen] = useState(false);
+  const [uploadingFiles, setUploadingFiles] = useState<UploadingFile[]>([]);
+  const [uploadCategory, setUploadCategory] = useState<string>('confidential');
+
+  // Dialog states
+  const [folderDialogOpen, setFolderDialogOpen] = useState(false);
+  const [shareDialogOpen, setShareDialogOpen] = useState(false);
+  const [permissionDialogOpen, setPermissionDialogOpen] = useState(false);
+  const [renameDialogOpen, setRenameDialogOpen] = useState(false);
+  const [viewerDialogOpen, setViewerDialogOpen] = useState(false);
+  const [viewerFileUrl, setViewerFileUrl] = useState<string | null>(null);
+
+  // Dialog data
+  const [dialogValue, setDialogValue] = useState('');
+  const [selectedCategory, setSelectedCategory] = useState<string>('confidential');
+  const [selectedFile, setSelectedFile] = useState<FileItem | null>(null);
+  const [shareSettings, setShareSettings] = useState({
+    accessLevel: 'view_only',
+    password: '',
+    expiresAt: '',
+    maxDownloads: '',
+  });
+
+  const { toast } = useToast();
+
+  // Check if user is internal
+  const isInternalUser = session?.user?.domain !== 'partners';
+
+  // Build tree structure function
+  const buildTree = (flatItems: FileItem[]): FileItem[] => {
+    const itemMap = new Map<string, FileItem>();
+    const rootItems: FileItem[] = [];
+
+    // Store all items in map (initialize children)
+    flatItems.forEach(item => {
+      itemMap.set(item.id, { ...item, children: [] });
+    });
+
+    // Set parent-child relationships
+    flatItems.forEach(item => {
+      const mappedItem = itemMap.get(item.id)!;
+
+      if (!item.parentId) {
+        // No parentId means root item
+        rootItems.push(mappedItem);
+      } else {
+        // Has parentId, add to parent's children
+        const parent = itemMap.get(item.parentId);
+        if (parent) {
+          if (!parent.children) parent.children = [];
+          parent.children.push(mappedItem);
+        } else {
+          // Can't find parent, treat as root
+          rootItems.push(mappedItem);
+        }
+      }
+    });
+
+    return rootItems;
+  };
+
+  // Fetch file list
+  const fetchItems = useCallback(async () => {
+    setLoading(true);
+    try {
+      const params = new URLSearchParams();
+
+      // For tree view, get entire list
+      if (viewMode === 'list') {
+        params.append('viewMode', 'tree');
+        // Keep current path info for tree view (used for highlighting, etc.)
+        if (currentParentId) params.append('currentParentId', currentParentId);
+      } else {
+        // For grid view, only get current folder contents
+        if (currentParentId) params.append('parentId', currentParentId);
+      }
+
+      const response = await fetch(`/api/data-room/${projectId}?${params}`);
+      if (!response.ok) throw new Error('Failed to fetch files');
+
+      const data = await response.json();
+      setItems(data);
+
+      // Build tree structure
+      if (viewMode === 'list') {
+        const tree = buildTree(data);
+        setTreeItems(tree);
+      }
+    } catch (error) {
+      toast({
+        title: 'Error',
+        description: 'Failed to load files.',
+        variant: 'destructive',
+      });
+    } finally {
+      setLoading(false);
+    }
+  }, [projectId, currentParentId, viewMode, toast]);
+
+  useEffect(() => {
+    fetchItems();
+  }, [fetchItems]);
+
+  // Create folder
+  const createFolder = async () => {
+    try {
+      const response = await fetch(`/api/data-room/${projectId}`, {
+        method: 'POST',
+        headers: { 'Content-Type': 'application/json' },
+        body: JSON.stringify({
+          name: dialogValue,
+          type: 'folder',
+          category: selectedCategory,
+          parentId: currentParentId,
+        }),
+      });
+
+      if (!response.ok) {
+        const error = await response.json();
+        throw new Error(error.error || 'Failed to create folder');
+      }
+
+      await fetchItems();
+      setFolderDialogOpen(false);
+      setDialogValue('');
+
+      toast({
+        title: 'Success',
+        description: 'Folder created successfully.',
+      });
+    } catch (error: any) {
+      toast({
+        title: 'Error',
+        description: error.message || 'Failed to create folder.',
+        variant: 'destructive',
+      });
+    }
+  };
+
+  // Handle file upload
+  const handleFileUpload = async (files: FileList | File[]) => {
+    const fileArray = Array.from(files);
+
+    // Initialize uploading file list
+    const newUploadingFiles: UploadingFile[] = fileArray.map(file => ({
+      file,
+      progress: 0,
+      status: 'pending' as const
+    }));
+
+    setUploadingFiles(newUploadingFiles);
+
+    // Process each file upload
+    for (let i = 0; i < fileArray.length; i++) {
+      const file = fileArray[i];
+
+      try {
+        // Update status: uploading
+        setUploadingFiles(prev => prev.map((f, idx) =>
+          idx === i ? { ...f, status: 'uploading', progress: 20 } : f
+        ));
+
+        // DRM decryption
+        setUploadingFiles(prev => prev.map((f, idx) =>
+          idx === i ? { ...f, status: 'processing', progress: 40 } : f
+        ));
+
+        const decryptedData = await decryptWithServerAction(file);
+
+        // Create FormData
+        const formData = new FormData();
+        const blob = new Blob([decryptedData], { type: file.type });
+        formData.append('file', blob, file.name);
+        formData.append('category', uploadCategory);
+        formData.append('fileSize', file.size.toString()); // Pass file size
+        if (currentParentId) {
+          formData.append('parentId', currentParentId);
+        }
+
+        // Update upload progress
+        setUploadingFiles(prev => prev.map((f, idx) =>
+          idx === i ? { ...f, progress: 60 } : f
+        ));
+
+        // API call
+        const response = await fetch(`/api/data-room/${projectId}/upload`, {
+          method: 'POST',
+          body: formData,
+        });
+
+        if (!response.ok) {
+          const error = await response.json();
+          throw new Error(error.error || 'Upload failed');
+        }
+
+        // Success
+        setUploadingFiles(prev => prev.map((f, idx) =>
+          idx === i ? { ...f, status: 'completed', progress: 100 } : f
+        ));
+
+      } catch (error: any) {
+        // Failure
+        setUploadingFiles(prev => prev.map((f, idx) =>
+          idx === i ? {
+            ...f,
+            status: 'error',
+            error: error.message || 'Upload failed'
+          } : f
+        ));
+      }
+    }
+
+    // Refresh list after all uploads complete
+    await fetchItems();
+
+    // Show toast if any files succeeded
+    const successCount = newUploadingFiles.filter(f => f.status === 'completed').length;
+    if (successCount > 0) {
+      toast({
+        title: 'Upload Complete',
+        description: `${successCount} file(s) uploaded successfully.`,
+      });
+    }
+  };
+
+  // Download folder
+  const downloadFolder = async (folder: FileItem) => {
+    if (folder.type !== 'folder') return;
+
+    try {
+      toast({
+        title: 'Checking Permissions',
+        description: 'Verifying download permissions for folder contents...',
+      });
+
+      // Call folder download API
+      const response = await fetch(`/api/data-room/${projectId}/download-folder/${folder.id}`, {
+        method: 'GET',
+      });
+
+      if (!response.ok) {
+        const error = await response.json();
+
+        // If there are files without permission, provide details
+        if (error.unauthorizedFiles) {
+          toast({
+            title: 'Insufficient Permissions',
+            description: `No permission for ${error.unauthorizedFiles.length} file(s): ${error.unauthorizedFiles.join(', ')}`,
+            variant: 'destructive',
+          });
+          return;
+        }
+
+        throw new Error(error.error || 'Folder download failed');
+      }
+
+      const blob = await response.blob();
+      const url = window.URL.createObjectURL(blob);
+
+      // Include folder name in filename
+      const timestamp = new Date().toISOString().replace(/[:.]/g, '-').slice(0, 19);
+      const fileName = `${folder.name}_${timestamp}.zip`;
+
+      const a = document.createElement('a');
+      a.href = url;
+      a.download = fileName;
+      document.body.appendChild(a);
+      a.click();
+
+      window.URL.revokeObjectURL(url);
+      document.body.removeChild(a);
+
+      toast({
+        title: 'Download Complete',
+        description: `${folder.name} folder downloaded successfully.`,
+      });
+
+    } catch (error: any) {
+      toast({
+        title: 'Error',
+        description: error.message || 'Failed to download folder.',
+        variant: 'destructive',
+      });
+    }
+  };
+
+  // Share file
+  const shareFile = async () => {
+    if (!selectedFile) return;
+
+    try {
+      const response = await fetch(`/api/data-room/${projectId}/share`, {
+        method: 'POST',
+        headers: { 'Content-Type': 'application/json' },
+        body: JSON.stringify({
+          fileId: selectedFile.id,
+          ...shareSettings,
+        }),
+      });
+
+      if (!response.ok) {
+        throw new Error('Failed to create share link');
+      }
+
+      const data = await response.json();
+
+      // Copy share link to clipboard
+      await navigator.clipboard.writeText(data.shareUrl);
+
+      toast({
+        title: 'Share Link Created',
+        description: 'Link copied to clipboard.',
+      });
+
+      setShareDialogOpen(false);
+      setSelectedFile(null);
+    } catch (error) {
+      toast({
+        title: 'Error',
+        description: 'Failed to create share link.',
+        variant: 'destructive',
+      });
+    }
+  };
+
+  // Download multiple files
+  const downloadMultipleFiles = async (itemIds: string[]) => {
+    // Filter only actual files (exclude folders) that can be downloaded
+    const filesToDownload = items.filter(item =>
+      itemIds.includes(item.id) &&
+      item.type === 'file' &&
+      item.permissions?.canDownload === 'true'
+    );
+
+    if (filesToDownload.length === 0) {
+      toast({
+        title: 'Notice',
+        description: 'No downloadable files selected.',
+        variant: 'default',
+      });
+      return;
+    }
+
+    // Use regular download for single file
+    if (filesToDownload.length === 1) {
+      await downloadFile(filesToDownload[0]);
+      return;
+    }
+
+    try {
+      toast({
+        title: 'Preparing Download',
+        description: `Compressing ${filesToDownload.length} files...`,
+      });
+
+      // Call multiple files download API
+      const response = await fetch(`/api/data-room/${projectId}/download-multiple`, {
+        method: 'POST',
+        headers: { 'Content-Type': 'application/json' },
+        body: JSON.stringify({ fileIds: filesToDownload.map(f => f.id) })
+      });
+
+      if (!response.ok) {
+        throw new Error('Download failed');
+      }
+
+      const blob = await response.blob();
+      const url = window.URL.createObjectURL(blob);
+
+      // Include timestamp in filename
+      const timestamp = new Date().toISOString().replace(/[:.]/g, '-').slice(0, 19);
+      const fileName = `files_${timestamp}.zip`;
+
+      const a = document.createElement('a');
+      a.href = url;
+      a.download = fileName;
+      document.body.appendChild(a);
+      a.click();
+
+      window.URL.revokeObjectURL(url);
+      document.body.removeChild(a);
+
+      toast({
+        title: 'Download Complete',
+        description: `${filesToDownload.length} files downloaded successfully.`,
+      });
+
+    } catch (error) {
+      console.error('Multiple download error:', error);
+
+      // Offer individual downloads on failure
+      toast({
+        title: 'Batch Download Failed',
+        description: 'Would you like to try individual downloads?',
+        action: (
+          <Button
+            size="sm"
+            variant="outline"
+            onClick={() => {
+              // Execute individual downloads
+              filesToDownload.forEach(async (file, index) => {
+                // Add delay between downloads to reduce browser load
+                setTimeout(() => downloadFile(file), index * 500);
+              });
+            }}
+          >
+            Download Individually
+          </Button>
+        ),
+      });
+    }
+  };
+
+  // View file with PDFTron
+  const viewFile = async (file: FileItem) => {
+    try {
+
+
+
+      setViewerFileUrl(file.filePath);
+      setSelectedFile(file);
+      setViewerDialogOpen(true);
+
+
+
+    } catch (error) {
+      toast({
+        title: 'Error',
+        description: 'Failed to open file for viewing.',
+        variant: 'destructive',
+      });
+    }
+  };
+
+  // Download file
+  const downloadFile = async (file: FileItem) => {
+    try {
+      const response = await fetch(`/api/data-room/${projectId}/${file.id}/download`);
+
+      if (!response.ok) {
+        throw new Error('Download failed');
+      }
+
+      const blob = await response.blob();
+      const url = window.URL.createObjectURL(blob);
+
+      const a = document.createElement('a');
+      a.href = url;
+      a.download = file.name;
+      document.body.appendChild(a);
+      a.click();
+
+      window.URL.revokeObjectURL(url);
+      document.body.removeChild(a);
+    } catch (error) {
+      toast({
+        title: 'Error',
+        description: 'Download failed.',
+        variant: 'destructive',
+      });
+    }
+  };
+
+  // Delete files
+  const deleteItems = async (itemIds: string[]) => {
+    try {
+      await Promise.all(
+        itemIds.map(id =>
+          fetch(`/api/data-room/${projectId}/${id}`, { method: 'DELETE' })
+        )
+      );
+
+      await fetchItems();
+      setSelectedItems(new Set());
+
+      toast({
+        title: 'Success',
+        description: 'Selected items deleted successfully.',
+      });
+    } catch (error) {
+      toast({
+        title: 'Error',
+        description: 'Failed to delete items.',
+        variant: 'destructive',
+      });
+    }
+  };
+
+  // Rename item
+  const renameItem = async () => {
+    if (!selectedFile) return;
+
+    try {
+      const response = await fetch(
+        `/api/data-room/${projectId}/${selectedFile.id}`,
+        {
+          method: 'PATCH',
+          headers: { 'Content-Type': 'application/json' },
+          body: JSON.stringify({ name: dialogValue }),
+        }
+      );
+
+      if (!response.ok) {
+        throw new Error('Failed to rename');
+      }
+
+      await fetchItems();
+      setRenameDialogOpen(false);
+      setSelectedFile(null);
+      setDialogValue('');
+
+      toast({
+        title: 'Success',
+        description: 'Item renamed successfully.',
+      });
+    } catch (error) {
+      toast({
+        title: 'Error',
+        description: 'Failed to rename item.',
+        variant: 'destructive',
+      });
+    }
+  };
+
+  // Change category
+  const changeCategory = async (
+    itemId: string,
+    newCategory: string,
+    applyToChildren: boolean = false
+  ) => {
+    try {
+      const response = await fetch(
+        `/api/data-room/${projectId}/${itemId}`,
+        {
+          method: 'PATCH',
+          headers: { 'Content-Type': 'application/json' },
+          body: JSON.stringify({
+            category: newCategory,
+            applyToChildren
+          }),
+        }
+      );
+
+      if (!response.ok) {
+        throw new Error('Failed to change category');
+      }
+
+      await fetchItems();
+
+      toast({
+        title: 'Success',
+        description: 'Category updated successfully.',
+      });
+    } catch (error) {
+      toast({
+        title: 'Error',
+        description: 'Failed to change category.',
+        variant: 'destructive',
+      });
+    }
+  };
+
+  // Category change dialog states
+  const [categoryDialogOpen, setCategoryDialogOpen] = useState(false);
+  const [applyToChildren, setApplyToChildren] = useState(false);
+  const [newCategory, setNewCategory] = useState('confidential');
+
+  // Handle folder double click
+  const handleFolderOpen = (folder: FileItem) => {
+    if (viewMode === 'grid') {
+      setCurrentPath([...currentPath, folder.name]);
+      setCurrentParentId(folder.id);
+    } else {
+      // In tree view, expand/collapse
+      const newExpanded = new Set(expandedFolders);
+      if (newExpanded.has(folder.id)) {
+        newExpanded.delete(folder.id);
+      } else {
+        newExpanded.add(folder.id);
+      }
+      setExpandedFolders(newExpanded);
+    }
+    setSelectedItems(new Set());
+  };
+
+  // Toggle folder expansion
+  const toggleFolderExpand = (folderId: string) => {
+    const newExpanded = new Set(expandedFolders);
+    if (newExpanded.has(folderId)) {
+      newExpanded.delete(folderId);
+    } else {
+      newExpanded.add(folderId);
+    }
+    setExpandedFolders(newExpanded);
+  };
+
+  // Toggle item selection
+  const toggleItemSelection = (itemId: string) => {
+    const newSelected = new Set(selectedItems);
+    if (newSelected.has(itemId)) {
+      newSelected.delete(itemId);
+    } else {
+      newSelected.add(itemId);
+    }
+    setSelectedItems(newSelected);
+  };
+
+  // Navigate to path
+  const navigateToPath = (index: number) => {
+    if (index === -1) {
+      setCurrentPath([]);
+      setCurrentParentId(null);
+    } else {
+      setCurrentPath(currentPath.slice(0, index + 1));
+      // Need to update parentId logic
+    }
+  };
+
+  // Filtered items
+  const filteredItems = items.filter(item =>
+    item.name.toLowerCase().includes(searchQuery.toLowerCase())
+  );
+
+  const filteredTreeItems = treeItems.filter(item =>
+    item.name.toLowerCase().includes(searchQuery.toLowerCase())
+  );
+
+  // Format file size
+  const formatFileSize = (bytes?: number) => {
+    if (!bytes) return '-';
+    const sizes = ['B', 'KB', 'MB', 'GB'];
+    const i = Math.floor(Math.log(bytes) / Math.log(1024));
+    return `${(bytes / Math.pow(1024, i)).toFixed(1)} ${sizes[i]}`;
+  };
+
+  return (
+    <div className="flex flex-col h-full">
+      {/* Toolbar */}
+      <div className="border-b p-4">
+        <div className="flex items-center justify-between mb-3">
+          <div className="flex items-center gap-2">
+            {isInternalUser && (
+              <>
+                <Button
+                  size="sm"
+                  onClick={() => setFolderDialogOpen(true)}
+                >
+                  <FolderPlus className="h-4 w-4 mr-1" />
+                  New Folder
+                </Button>
+                <Button
+                  size="sm"
+                  variant="outline"
+                  onClick={() => {
+                    // 현재 폴더의 카테고리를 기본값으로 설정
+                    if (currentParentId) {
+                      const currentFolder = items.find(item => item.parentId === currentParentId);
+                      if (currentFolder) {
+                        setUploadCategory(currentFolder.category);
+                      }
+                    }
+                    setUploadDialogOpen(true);
+                  }}
+                >
+                  <Upload className="h-4 w-4 mr-1" />
+                  Upload
+                </Button>
+              </>
+            )}
+
+            {selectedItems.size > 0 && (
+              <>
+                {/* Multiple download button */}
+                {items.filter(item =>
+                  selectedItems.has(item.id) &&
+                  item.type === 'file' &&
+                  item.permissions?.canDownload === 'true'
+                ).length > 0 && (
+                    <Button
+                      size="sm"
+                      variant="outline"
+                      onClick={() => downloadMultipleFiles(Array.from(selectedItems))}
+                    >
+                      <Download className="h-4 w-4 mr-1" />
+                      Download ({items.filter(item =>
+                        selectedItems.has(item.id) && item.type === 'file'
+                      ).length})
+                    </Button>
+                  )}
+
+                {/* Delete button */}
+                {items.find(item => selectedItems.has(item.id))?.permissions?.canDelete && (
+                  <Button
+                    size="sm"
+                    variant="destructive"
+                    onClick={() => deleteItems(Array.from(selectedItems))}
+                  >
+                    <Trash2 className="h-4 w-4 mr-1" />
+                    Delete ({selectedItems.size})
+                  </Button>
+                )}
+              </>
+            )}
+
+            {!isInternalUser && (
+              <Badge variant="secondary" className="ml-2">
+                <Shield className="h-3 w-3 mr-1" />
+                External User
+              </Badge>
+            )}
+          </div>
+
+          <div className="flex items-center gap-2">
+            <div className="relative">
+              <Search className="absolute left-2 top-1/2 -translate-y-1/2 h-4 w-4 text-muted-foreground" />
+              <Input
+                placeholder="Search..."
+                className="pl-8 w-64"
+                value={searchQuery}
+                onChange={(e) => setSearchQuery(e.target.value)}
+              />
+            </div>
+
+            <Button
+              size="sm"
+              variant="ghost"
+              onClick={() => setViewMode(viewMode === 'grid' ? 'list' : 'grid')}
+            >
+              {viewMode === 'grid' ? <List className="h-4 w-4" /> : <Grid className="h-4 w-4" />}
+            </Button>
+          </div>
+        </div>
+
+        {/* Breadcrumb */}
+        <Breadcrumb>
+          <BreadcrumbList>
+            <BreadcrumbItem>
+              <BreadcrumbLink onClick={() => navigateToPath(-1)}>
+                Home
+              </BreadcrumbLink>
+            </BreadcrumbItem>
+            {currentPath.map((path, index) => (
+              <BreadcrumbItem key={index}>
+                <ChevronRight className="h-4 w-4" />
+                <BreadcrumbLink onClick={() => navigateToPath(index)}>
+                  {path}
+                </BreadcrumbLink>
+              </BreadcrumbItem>
+            ))}
+          </BreadcrumbList>
+        </Breadcrumb>
+      </div>
+
+      {/* File List */}
+      <ScrollArea className="flex-1 p-4">
+        {loading ? (
+          <div className="flex justify-center items-center h-64">
+            <div className="text-muted-foreground">Loading...</div>
+          </div>
+        ) : filteredItems.length === 0 ? (
+          <div className="flex flex-col items-center justify-center h-64">
+            <Folder className="h-12 w-12 text-muted-foreground mb-2" />
+            <p className="text-muted-foreground">Empty</p>
+          </div>
+        ) : viewMode === 'grid' ? (
+          <div className="grid grid-cols-6 gap-4">
+            {filteredItems.map((item) => {
+              const CategoryIcon = categoryConfig[item.category].icon;
+              const categoryColor = categoryConfig[item.category].color;
+
+              return (
+                <ContextMenu key={item.id}>
+                  <ContextMenuTrigger>
+                    <div
+                      className={cn(
+                        "flex flex-col items-center p-3 rounded-lg cursor-pointer transition-colors",
+                        "hover:bg-accent",
+                        selectedItems.has(item.id) && "bg-accent"
+                      )}
+                      onClick={() => toggleItemSelection(item.id)}
+                      onDoubleClick={() => {
+                        if (item.type === 'folder') {
+                          handleFolderOpen(item);
+                        }
+                      }}
+                    >
+                      <div className="relative">
+                        {item.type === 'folder' ? (
+                          <Folder className="h-12 w-12 text-blue-500" />
+                        ) : (
+                          <File className="h-12 w-12 text-gray-500" />
+                        )}
+                        <CategoryIcon className={cn("h-4 w-4 absolute -bottom-1 -right-1", categoryColor)} />
+                      </div>
+
+                      <span className="mt-2 text-sm text-center truncate w-full">
+                        {item.name}
+                      </span>
+
+                      {item.viewCount !== undefined && (
+                        <div className="flex items-center gap-2 mt-1">
+                          <span className="text-xs text-muted-foreground flex items-center">
+                            <Eye className="h-3 w-3 mr-1" />
+                            {item.viewCount}
+                          </span>
+                          {item.downloadCount !== undefined && (
+                            <span className="text-xs text-muted-foreground flex items-center">
+                              <Download className="h-3 w-3 mr-1" />
+                              {item.downloadCount}
+                            </span>
+                          )}
+                        </div>
+                      )}
+                    </div>
+                  </ContextMenuTrigger>
+
+                  <ContextMenuContent>
+                    {item.type === 'folder' && (
+                      <>
+                        <ContextMenuItem onClick={() => handleFolderOpen(item)}>
+                          Open
+                        </ContextMenuItem>
+                        <ContextMenuItem onClick={() => downloadFolder(item)}>
+                          <Download className="h-4 w-4 mr-2" />
+                          Download Folder
+                        </ContextMenuItem>
+                      </>
+                    )}
+
+                    {item.type === 'file' && (
+                      <>
+                        <ContextMenuItem onClick={() => viewFile(item)}>
+                          <Eye className="h-4 w-4 mr-2" />
+                          View
+                        </ContextMenuItem>
+                        {item.permissions?.canDownload === 'true' && (
+                          <ContextMenuItem onClick={() => downloadFile(item)}>
+                            <Download className="h-4 w-4 mr-2" />
+                            Download
+                          </ContextMenuItem>
+                        )}
+                      </>
+                    )}
+
+                    {isInternalUser && (
+                      <>
+                        <ContextMenuSeparator />
+                        <ContextMenuSub>
+                          <ContextMenuSubTrigger>
+                            <Shield className="h-4 w-4 mr-2" />
+                            Change Category
+                          </ContextMenuSubTrigger>
+                          <ContextMenuSubContent>
+                            {Object.entries(categoryConfig).map(([key, config]) => (
+                              <ContextMenuItem
+                                key={key}
+                                onClick={() => {
+                                  if (item.type === 'folder') {
+                                    // Show dialog for folders
+                                    setSelectedFile(item);
+                                    setNewCategory(key);
+                                    setCategoryDialogOpen(true);
+                                  } else {
+                                    // Change immediately for files
+                                    changeCategory(item.id, key, false);
+                                  }
+                                }}
+                              >
+                                <config.icon className={cn("h-4 w-4 mr-2", config.color)} />
+                                {config.label}
+                              </ContextMenuItem>
+                            ))}
+                          </ContextMenuSubContent>
+                        </ContextMenuSub>
+
+                        <ContextMenuItem
+                          onClick={() => {
+                            setSelectedFile(item);
+                            setShareDialogOpen(true);
+                          }}
+                        >
+                          <Share2 className="h-4 w-4 mr-2" />
+                          Share
+                        </ContextMenuItem>
+
+                        {item.permissions?.canEdit && (
+                          <ContextMenuItem onClick={() => {
+                            setSelectedFile(item);
+                            setDialogValue(item.name);
+                            setRenameDialogOpen(true);
+                          }}>
+                            <Edit2 className="h-4 w-4 mr-2" />
+                            Rename
+                          </ContextMenuItem>
+                        )}
+                      </>
+                    )}
+
+                    {item.permissions?.canDelete && (
+                      <>
+                        <ContextMenuSeparator />
+                        <ContextMenuItem
+                          className="text-destructive"
+                          onClick={() => deleteItems([item.id])}
+                        >
+                          <Trash2 className="h-4 w-4 mr-2" />
+                          Delete
+                        </ContextMenuItem>
+                      </>
+                    )}
+                  </ContextMenuContent>
+                </ContextMenu>
+              );
+            })}
+          </div>
+        ) : (
+          // Tree View
+          <div className="space-y-1">
+            {filteredTreeItems.map((item) => (
+              <TreeItem
+                key={item.id}
+                item={item}
+                level={0}
+                expandedFolders={expandedFolders}
+                selectedItems={selectedItems}
+                onToggleExpand={toggleFolderExpand}
+                onSelectItem={toggleItemSelection}
+                onDoubleClick={handleFolderOpen}
+                onView={viewFile}
+                onDownload={downloadFile}
+                onDownloadFolder={downloadFolder}
+                onDelete={deleteItems}
+                onShare={(item) => {
+                  setSelectedFile(item);
+                  setShareDialogOpen(true);
+                }}
+                onRename={(item) => {
+                  setSelectedFile(item);
+                  setDialogValue(item.name);
+                  setRenameDialogOpen(true);
+                }}
+                isInternalUser={isInternalUser}
+              />
+            ))}
+          </div>
+        )}
+      </ScrollArea>
+
+{/* Upload Dialog */}
+<Dialog open={uploadDialogOpen} onOpenChange={setUploadDialogOpen}>
+  <DialogContent className="max-w-2xl max-h-[90vh] flex flex-col">
+    <DialogHeader>
+      <DialogTitle>Upload Files</DialogTitle>
+      <DialogDescription>
+        Drag and drop files or click to select.
+      </DialogDescription>
+    </DialogHeader>
+
+    <ScrollArea className="flex-1 pr-4">
+      <div className="space-y-4">
+        {/* Category Selection */}
+        <div>
+          <Label htmlFor="upload-category">Category</Label>
+          <Select value={uploadCategory} onValueChange={setUploadCategory}>
+            <SelectTrigger>
+              <SelectValue />
+            </SelectTrigger>
+            <SelectContent>
+              {Object.entries(categoryConfig)
+                .filter(([key]) => {
+                  // 현재 폴더가 있는 경우
+                  if (currentParentId) {
+                    const currentFolder = items.find(item => item.parentId === currentParentId);
+                    // 현재 폴더가 public이 아니면 public 옵션 제외
+                    if (currentFolder && currentFolder.category !== 'public') {
+                      return key !== 'public';
+                    }
+                  }
+                  // 루트 폴더이거나 현재 폴더가 public인 경우 모든 옵션 표시
+                  return true;
+                })
+                .map(([key, config]) => (
+                  <SelectItem key={key} value={key}>
+                    <div className="flex items-center">
+                      <config.icon className={cn("h-4 w-4 mr-2", config.color)} />
+                      <span>{config.label}</span>
+                    </div>
+                  </SelectItem>
+                ))}
+            </SelectContent>
+          </Select>
+          {/* 현재 폴더 정보 표시 (선택사항) */}
+          {currentParentId && (() => {
+            const currentFolder = items.find(item => item.parentId === currentParentId);
+            if (currentFolder && currentFolder.category !== 'public') {
+              return (
+                <p className="text-xs text-muted-foreground mt-1 flex items-center">
+                  <AlertCircle className="h-3 w-3 mr-1" />
+                  Current folder is {categoryConfig[currentFolder.category].label}.
+                  Public uploads are not allowed.
+                </p>
+              );
+            }
+          })()}
+        </div>
+
+        {/* Dropzone */}
+        <Dropzone
+          onDrop={(acceptedFiles: File[]) => {
+            handleFileUpload(acceptedFiles);
+          }}
+          accept={{
+            'application/pdf': ['.pdf'],
+            'application/msword': ['.doc'],
+            'application/vnd.openxmlformats-officedocument.wordprocessingml.document': ['.docx'],
+            'application/vnd.ms-excel': ['.xls'],
+            'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet': ['.xlsx'],
+            'application/vnd.ms-powerpoint': ['.ppt'],
+            'application/vnd.openxmlformats-officedocument.presentationml.presentation': ['.pptx'],
+            'text/plain': ['.txt'],
+            'text/csv': ['.csv'],
+            'image/*': ['.png', '.jpg', '.jpeg', '.gif', '.bmp', '.webp'],
+            'application/zip': ['.zip'],
+            'application/x-rar-compressed': ['.rar'],
+            'application/x-7z-compressed': ['.7z'],
+            'application/x-dwg': ['.dwg'],
+            'application/x-dxf': ['.dxf'],
+          }}
+          multiple={true}
+          disabled={false}
+        >
+          <DropzoneZone className="h-48 border-2 border-dashed border-gray-300 rounded-lg">
+            <DropzoneInput />
+            <div className="flex flex-col items-center justify-center h-full">
+              <DropzoneUploadIcon className="h-12 w-12 text-muted-foreground mb-4" />
+              <DropzoneTitle>Drag files or click to upload</DropzoneTitle>
+              <DropzoneDescription>Multiple files can be uploaded simultaneously</DropzoneDescription>
+            </div>
+          </DropzoneZone>
+        </Dropzone>
+
+        {/* Uploading File List */}
+        {uploadingFiles.length > 0 && (
+          <div className="border rounded-lg p-4 bg-muted/50">
+            <div className="flex items-center justify-between mb-3">
+              <h4 className="font-medium text-sm">
+                Uploading Files ({uploadingFiles.filter(f => f.status === 'completed').length}/{uploadingFiles.length})
+              </h4>
+              {uploadingFiles.every(f => f.status === 'completed' || f.status === 'error') && (
+                <Button
+                  size="sm"
+                  variant="ghost"
+                  onClick={() => setUploadingFiles([])}
+                >
+                  <X className="h-4 w-4" />
+                </Button>
+              )}
+            </div>
+            <div className="space-y-2 max-h-[300px] overflow-y-auto">
+              {uploadingFiles.map((uploadFile, index) => (
+                <div key={index} className="flex items-start gap-3 p-3 bg-background rounded-md">
+                  <File className="h-5 w-5 mt-0.5 flex-shrink-0 text-muted-foreground" />
+                  <div className="flex-1 min-w-0">
+                    <p className="text-sm font-medium truncate">{uploadFile.file.name}</p>
+                    <div className="flex items-center gap-2 mt-1">
+                      <span className="text-xs text-muted-foreground">
+                        {formatFileSize(uploadFile.file.size)}
+                      </span>
+                      <span className="text-xs">
+                        {uploadFile.status === 'pending' && 'Waiting...'}
+                        {uploadFile.status === 'uploading' && 'Uploading...'}
+                        {uploadFile.status === 'processing' && 'Processing...'}
+                        {uploadFile.status === 'completed' && (
+                          <span className="text-green-600 font-medium">✓ Complete</span>
+                        )}
+                        {uploadFile.status === 'error' && (
+                          <span className="text-red-600 font-medium">✗ {uploadFile.error}</span>
+                        )}
+                      </span>
+                    </div>
+                    {(uploadFile.status === 'uploading' || uploadFile.status === 'processing') && (
+                      <Progress value={uploadFile.progress} className="h-1.5 mt-2" />
+                    )}
+                  </div>
+                  {uploadFile.status === 'error' && (
+                    <Button
+                      size="sm"
+                      variant="ghost"
+                      onClick={() => {
+                        setUploadingFiles(prev =>
+                          prev.filter((_, i) => i !== index)
+                        );
+                      }}
+                    >
+                      <X className="h-4 w-4" />
+                    </Button>
+                  )}
+                </div>
+              ))}
+            </div>
+          </div>
+        )}
+      </div>
+    </ScrollArea>
+
+    <DialogFooter className="mt-4">
+      <Button
+        variant="outline"
+        onClick={() => {
+          setUploadDialogOpen(false);
+          setUploadingFiles([]);
+        }}
+      >
+        Close
+      </Button>
+    </DialogFooter>
+  </DialogContent>
+</Dialog>
+
+      {/* Create Folder Dialog */}
+      <Dialog open={folderDialogOpen} onOpenChange={setFolderDialogOpen}>
+        <DialogContent>
+          <DialogHeader>
+            <DialogTitle>Create New Folder</DialogTitle>
+            <DialogDescription>
+              Set the folder name and access permission category.
+            </DialogDescription>
+          </DialogHeader>
+
+          <div className="space-y-4">
+            <div>
+              <Label htmlFor="folder-name">Folder Name</Label>
+              <Input
+                id="folder-name"
+                value={dialogValue}
+                onChange={(e) => setDialogValue(e.target.value)}
+                placeholder="Enter folder name"
+              />
+            </div>
+
+            <div>
+              <Label htmlFor="folder-category">Category</Label>
+              <Select value={selectedCategory} onValueChange={setSelectedCategory}>
+                <SelectTrigger>
+                  <SelectValue />
+                </SelectTrigger>
+                <SelectContent>
+                  {Object.entries(categoryConfig).map(([key, config]) => (
+                    <SelectItem key={key} value={key}>
+                      <div className="flex items-center">
+                        <config.icon className={cn("h-4 w-4 mr-2", config.color)} />
+                        <span>{config.label}</span>
+                      </div>
+                    </SelectItem>
+                  ))}
+                </SelectContent>
+              </Select>
+            </div>
+          </div>
+
+          <DialogFooter>
+            <Button variant="outline" onClick={() => setFolderDialogOpen(false)}>
+              Cancel
+            </Button>
+            <Button onClick={createFolder}>Create</Button>
+          </DialogFooter>
+        </DialogContent>
+      </Dialog>
+
+      {/* File Share Dialog */}
+      <Dialog open={shareDialogOpen} onOpenChange={setShareDialogOpen}>
+        <DialogContent className="max-w-md">
+          <DialogHeader>
+            <DialogTitle>Share File</DialogTitle>
+            <DialogDescription>
+              Sharing {selectedFile?.name}.
+            </DialogDescription>
+          </DialogHeader>
+
+          <Tabs defaultValue="link" className="w-full">
+            <TabsList className="grid w-full grid-cols-2">
+              <TabsTrigger value="link">Link Sharing</TabsTrigger>
+              <TabsTrigger value="permission">Permission Settings</TabsTrigger>
+            </TabsList>
+
+            <TabsContent value="link" className="space-y-4">
+              <div>
+                <Label htmlFor="access-level">Access Level</Label>
+                <Select
+                  value={shareSettings.accessLevel}
+                  onValueChange={(value) => setShareSettings({ ...shareSettings, accessLevel: value })}
+                >
+                  <SelectTrigger>
+                    <SelectValue />
+                  </SelectTrigger>
+                  <SelectContent>
+                    <SelectItem value="view_only">
+                      <div className="flex items-center">
+                        <Eye className="h-4 w-4 mr-2" />
+                        View Only
+                      </div>
+                    </SelectItem>
+                    <SelectItem value="view_download">
+                      <div className="flex items-center">
+                        <Download className="h-4 w-4 mr-2" />
+                        View + Download
+                      </div>
+                    </SelectItem>
+                  </SelectContent>
+                </Select>
+              </div>
+
+              <div>
+                <Label htmlFor="password">Password (Optional)</Label>
+                <Input
+                  id="password"
+                  type="password"
+                  value={shareSettings.password}
+                  onChange={(e) => setShareSettings({ ...shareSettings, password: e.target.value })}
+                  placeholder="Enter password"
+                />
+              </div>
+
+              <div>
+                <Label htmlFor="expires">Expiry Date (Optional)</Label>
+                <Input
+                  id="expires"
+                  type="datetime-local"
+                  value={shareSettings.expiresAt}
+                  onChange={(e) => setShareSettings({ ...shareSettings, expiresAt: e.target.value })}
+                />
+              </div>
+
+              <div>
+                <Label htmlFor="max-downloads">Max Downloads (Optional)</Label>
+                <Input
+                  id="max-downloads"
+                  type="number"
+                  value={shareSettings.maxDownloads}
+                  onChange={(e) => setShareSettings({ ...shareSettings, maxDownloads: e.target.value })}
+                  placeholder="Unlimited"
+                />
+              </div>
+            </TabsContent>
+
+            <TabsContent value="permission" className="space-y-4">
+              <div>
+                <Label htmlFor="target-domain">Target Domain</Label>
+                <Select>
+                  <SelectTrigger>
+                    <SelectValue placeholder="Select domain" />
+                  </SelectTrigger>
+                  <SelectContent>
+                    <SelectItem value="partners">Partners</SelectItem>
+                    <SelectItem value="internal">Internal</SelectItem>
+                  </SelectContent>
+                </Select>
+              </div>
+
+              <div className="space-y-2">
+                <Label>Permissions</Label>
+                <div className="space-y-2">
+                  <div className="flex items-center justify-between">
+                    <Label htmlFor="can-view" className="text-sm font-normal">View</Label>
+                    <Switch id="can-view" defaultChecked />
+                  </div>
+                  <div className="flex items-center justify-between">
+                    <Label htmlFor="can-download" className="text-sm font-normal">Download</Label>
+                    <Switch id="can-download" />
+                  </div>
+                  <div className="flex items-center justify-between">
+                    <Label htmlFor="can-edit" className="text-sm font-normal">Edit</Label>
+                    <Switch id="can-edit" />
+                  </div>
+                  <div className="flex items-center justify-between">
+                    <Label htmlFor="can-share" className="text-sm font-normal">Share</Label>
+                    <Switch id="can-share" />
+                  </div>
+                </div>
+              </div>
+            </TabsContent>
+          </Tabs>
+
+          <DialogFooter>
+            <Button variant="outline" onClick={() => setShareDialogOpen(false)}>
+              Cancel
+            </Button>
+            <Button onClick={shareFile}>
+              <Share2 className="h-4 w-4 mr-2" />
+              Create Share Link
+            </Button>
+          </DialogFooter>
+        </DialogContent>
+      </Dialog>
+
+      {/* Rename Dialog */}
+      <Dialog open={renameDialogOpen} onOpenChange={setRenameDialogOpen}>
+        <DialogContent>
+          <DialogHeader>
+            <DialogTitle>Rename</DialogTitle>
+            <DialogDescription>
+              {selectedFile?.type === 'file'
+                ? 'Enter the file name. (Extension will be preserved automatically)'
+                : 'Enter the folder name.'
+              }
+            </DialogDescription>
+          </DialogHeader>
+
+          <div>
+            <Label htmlFor="item-name">New Name</Label>
+            <Input
+              id="item-name"
+              value={dialogValue}
+              onChange={(e) => setDialogValue(e.target.value)}
+              placeholder={
+                selectedFile?.type === 'file'
+                  ? selectedFile.name.substring(0, selectedFile.name.lastIndexOf('.'))
+                  : selectedFile?.name
+              }
+              onKeyDown={(e) => {
+                if (e.key === 'Enter') {
+                  renameItem();
+                }
+              }}
+            />
+            {selectedFile?.type === 'file' && (
+              <p className="text-sm text-muted-foreground mt-1">
+                Extension: {selectedFile.name.substring(selectedFile.name.lastIndexOf('.'))}
+              </p>
+            )}
+          </div>
+
+          <DialogFooter>
+            <Button
+              variant="outline"
+              onClick={() => {
+                setRenameDialogOpen(false);
+                setSelectedFile(null);
+                setDialogValue('');
+              }}
+            >
+              Cancel
+            </Button>
+            <Button onClick={renameItem}>Rename</Button>
+          </DialogFooter>
+        </DialogContent>
+      </Dialog>
+
+      {/* Category Change Dialog (for folders) */}
+      <Dialog open={categoryDialogOpen} onOpenChange={setCategoryDialogOpen}>
+        <DialogContent>
+          <DialogHeader>
+            <DialogTitle>Change Category</DialogTitle>
+            <DialogDescription>
+              Changing category for {selectedFile?.name} folder.
+            </DialogDescription>
+          </DialogHeader>
+
+          <div className="space-y-4">
+            <div>
+              <Label>New Category</Label>
+              <div className="mt-2 space-y-2">
+                {Object.entries(categoryConfig).map(([key, config]) => (
+                  <div
+                    key={key}
+                    className={cn(
+                      "flex items-center p-3 rounded-lg border cursor-pointer transition-colors",
+                      newCategory === key && "bg-accent border-primary"
+                    )}
+                    onClick={() => setNewCategory(key)}
+                  >
+                    <config.icon className={cn("h-5 w-5 mr-3", config.color)} />
+                    <div className="flex-1">
+                      <div className="font-medium">{config.label}</div>
+                      <div className="text-sm text-muted-foreground">
+                        {key === 'public' && 'External users can access freely'}
+                        {key === 'restricted' && 'External users can only view'}
+                        {key === 'confidential' && 'External users cannot access'}
+                        {key === 'internal' && 'Internal use only'}
+                      </div>
+                    </div>
+                  </div>
+                ))}
+              </div>
+            </div>
+            {selectedFile?.type === 'folder' && (
+              <div className="flex items-center space-x-2">
+                <Switch
+                  id="apply-to-children"
+                  checked={newCategory !== 'public' ? true : applyToChildren}
+                  onCheckedChange={(checked) => {
+                    if (newCategory === 'public') {
+                      setApplyToChildren(checked);
+                    }
+                  }}
+                  disabled={newCategory !== 'public'}
+                />
+                <Label htmlFor="apply-to-children" className={cn(
+                  newCategory !== 'public' && "text-muted-foreground"
+                )}>
+                  Apply to all files and subfolders
+                  {newCategory !== 'public' && (
+                    <span className="text-xs block mt-1">
+                      (Required for security categories)
+                    </span>
+                  )}
+                </Label>
+              </div>
+            )}
+          </div>
+
+          <DialogFooter>
+            <Button
+              variant="outline"
+              onClick={() => {
+                setCategoryDialogOpen(false);
+                setSelectedFile(null);
+                setApplyToChildren(false);
+              }}
+            >
+              Cancel
+            </Button>
+            <Button
+              onClick={() => {
+                if (selectedFile) {
+                  changeCategory(selectedFile.id, newCategory, applyToChildren);
+                  setCategoryDialogOpen(false);
+                  setSelectedFile(null);
+                  setApplyToChildren(false);
+                }
+              }}
+            >
+              Change
+            </Button>
+          </DialogFooter>
+        </DialogContent>
+      </Dialog>
+
+      {/* Secure Document Viewer Dialog */}
+      <Dialog
+        open={viewerDialogOpen}
+        onOpenChange={(open) => {
+          if (!open) {
+            setViewerDialogOpen(false);
+            setViewerFileUrl(null);
+            setSelectedFile(null);
+          }
+        }}
+      >
+        <DialogContent className="max-w-[90vw] max-h-[90vh] w-full h-full p-0">
+          <DialogHeader className="px-6 py-4 border-b">
+            <DialogTitle className="flex items-center justify-between">
+              <div className="flex items-center gap-2">
+                <Eye className="h-5 w-5" />
+                Secure Document Viewer
+              </div>
+              <div className="flex items-center gap-2 text-sm text-muted-foreground">
+                <Lock className="h-4 w-4" />
+                View Only Mode
+              </div>
+            </DialogTitle>
+            <DialogDescription>
+              <div className="flex items-center justify-between mt-2">
+                <span>Viewing: {selectedFile?.name}</span>
+                <Badge variant="destructive" className="text-xs">
+                  <AlertCircle className="h-3 w-3 mr-1" />
+                  Protected Document - No Download/Copy/Print
+                </Badge>
+              </div>
+            </DialogDescription>
+          </DialogHeader>
+
+          <div className="relative flex-1 h-[calc(90vh-120px)]">
+            {viewerFileUrl && selectedFile && (
+              <SecurePDFViewer
+                documentUrl={viewerFileUrl}
+                fileName={selectedFile.name}
+                onClose={() => {
+                  setViewerDialogOpen(false);
+                  setViewerFileUrl(null);
+                  setSelectedFile(null);
+                }}
+              />
+            )}
+          </div>
+
+          <div className="px-6 py-3 border-t bg-muted/50">
+            <div className="flex items-center justify-between text-xs text-muted-foreground">
+              <div className="flex items-center gap-4">
+                <span>Viewer: {session?.user?.email}</span>
+                <span>Time: {new Date().toLocaleString()}</span>
+                <span>IP logged for security</span>
+              </div>
+              <Button
+                size="sm"
+                variant="outline"
+                onClick={() => {
+                  setViewerDialogOpen(false);
+                  setViewerFileUrl(null);
+                  setSelectedFile(null);
+                }}
+              >
+                <X className="h-4 w-4 mr-1" />
+                Close Viewer
+              </Button>
+            </div>
+          </div>
+        </DialogContent>
+      </Dialog>
+    </div>
+  );
+}
\ No newline at end of file
diff --git a/components/file-manager/FileManager.tsx b/components/file-manager/FileManager.tsx
index fa2d8c38..f92f6b04 100644
--- a/components/file-manager/FileManager.tsx
+++ b/components/file-manager/FileManager.tsx
@@ -266,10 +266,6 @@ const TreeItem: React.FC<{
 
               {isInternalUser && (
                 <>
-                  <DropdownMenuItem onClick={() => onShare(item)}>
-                    <Share2 className="h-4 w-4 mr-2" />
-                    Share
-                  </DropdownMenuItem>
 
                   {item.permissions?.canEdit && (
                     <DropdownMenuItem onClick={() => onRename(item)}>
@@ -624,44 +620,6 @@ export function FileManager({ projectId }: FileManagerProps) {
     }
   };
 
-  // Share file
-  const shareFile = async () => {
-    if (!selectedFile) return;
-
-    try {
-      const response = await fetch(`/api/data-room/${projectId}/share`, {
-        method: 'POST',
-        headers: { 'Content-Type': 'application/json' },
-        body: JSON.stringify({
-          fileId: selectedFile.id,
-          ...shareSettings,
-        }),
-      });
-
-      if (!response.ok) {
-        throw new Error('Failed to create share link');
-      }
-
-      const data = await response.json();
-
-      // Copy share link to clipboard
-      await navigator.clipboard.writeText(data.shareUrl);
-
-      toast({
-        title: 'Share Link Created',
-        description: 'Link copied to clipboard.',
-      });
-
-      setShareDialogOpen(false);
-      setSelectedFile(null);
-    } catch (error) {
-      toast({
-        title: 'Error',
-        description: 'Failed to create share link.',
-        variant: 'destructive',
-      });
-    }
-  };
 
   // Download multiple files
   const downloadMultipleFiles = async (itemIds: string[]) => {
@@ -974,9 +932,9 @@ export function FileManager({ projectId }: FileManagerProps) {
   };
 
   return (
-    <div className="flex flex-col h-full">
-      {/* Toolbar */}
-      <div className="border-b p-4">
+    <div className="h-full flex flex-col min-h-0">
+      {/* Toolbar - 고정 */}
+      <div className="border-b p-4 bg-background shrink-0">
         <div className="flex items-center justify-between mb-3">
           <div className="flex items-center gap-2">
             {isInternalUser && (
@@ -1091,204 +1049,114 @@ export function FileManager({ projectId }: FileManagerProps) {
         </Breadcrumb>
       </div>
 
-      {/* File List */}
-      <ScrollArea className="flex-1 p-4">
-        {loading ? (
-          <div className="flex justify-center items-center h-64">
-            <div className="text-muted-foreground">Loading...</div>
-          </div>
-        ) : filteredItems.length === 0 ? (
-          <div className="flex flex-col items-center justify-center h-64">
-            <Folder className="h-12 w-12 text-muted-foreground mb-2" />
-            <p className="text-muted-foreground">Empty</p>
-          </div>
-        ) : viewMode === 'grid' ? (
-          <div className="grid grid-cols-6 gap-4">
-            {filteredItems.map((item) => {
-              const CategoryIcon = categoryConfig[item.category].icon;
-              const categoryColor = categoryConfig[item.category].color;
-
-              return (
-                <ContextMenu key={item.id}>
-                  <ContextMenuTrigger>
-                    <div
-                      className={cn(
-                        "flex flex-col items-center p-3 rounded-lg cursor-pointer transition-colors",
-                        "hover:bg-accent",
-                        selectedItems.has(item.id) && "bg-accent"
-                      )}
-                      onClick={() => toggleItemSelection(item.id)}
-                      onDoubleClick={() => {
-                        if (item.type === 'folder') {
-                          handleFolderOpen(item);
-                        }
-                      }}
-                    >
-                      <div className="relative">
-                        {item.type === 'folder' ? (
-                          <Folder className="h-12 w-12 text-blue-500" />
-                        ) : (
-                          <File className="h-12 w-12 text-gray-500" />
-                        )}
-                        <CategoryIcon className={cn("h-4 w-4 absolute -bottom-1 -right-1", categoryColor)} />
-                      </div>
-
-                      <span className="mt-2 text-sm text-center truncate w-full">
-                        {item.name}
-                      </span>
+      {/* File List - 스크롤 가능 영역 */}
+      <div className="flex-1 min-h-0">
+        <ScrollArea className="h-full">
+          <div className="p-4">
+            {loading ? (
+              <div className="flex justify-center items-center h-64">
+                <div className="text-muted-foreground">Loading...</div>
+              </div>
+            ) : filteredItems.length === 0 ? (
+              <div className="flex flex-col items-center justify-center h-64">
+                <Folder className="h-12 w-12 text-muted-foreground mb-2" />
+                <p className="text-muted-foreground">Empty</p>
+              </div>
+            ) : viewMode === 'grid' ? (
+              <div className="grid grid-cols-6 gap-4">
+                {filteredItems.map((item) => {
+                  const CategoryIcon = categoryConfig[item.category].icon;
+                  const categoryColor = categoryConfig[item.category].color;
 
-                      {item.viewCount !== undefined && (
-                        <div className="flex items-center gap-2 mt-1">
-                          <span className="text-xs text-muted-foreground flex items-center">
-                            <Eye className="h-3 w-3 mr-1" />
-                            {item.viewCount}
-                          </span>
-                          {item.downloadCount !== undefined && (
-                            <span className="text-xs text-muted-foreground flex items-center">
-                              <Download className="h-3 w-3 mr-1" />
-                              {item.downloadCount}
-                            </span>
+                  return (
+                    <ContextMenu key={item.id}>
+                      <ContextMenuTrigger>
+                        <div
+                          className={cn(
+                            "flex flex-col items-center p-3 rounded-lg cursor-pointer transition-colors",
+                            "hover:bg-accent",
+                            selectedItems.has(item.id) && "bg-accent"
                           )}
-                        </div>
-                      )}
-                    </div>
-                  </ContextMenuTrigger>
-
-                  <ContextMenuContent>
-                    {item.type === 'folder' && (
-                      <>
-                        <ContextMenuItem onClick={() => handleFolderOpen(item)}>
-                          Open
-                        </ContextMenuItem>
-                        <ContextMenuItem onClick={() => downloadFolder(item)}>
-                          <Download className="h-4 w-4 mr-2" />
-                          Download Folder
-                        </ContextMenuItem>
-                      </>
-                    )}
-
-                    {item.type === 'file' && (
-                      <>
-                        <ContextMenuItem onClick={() => viewFile(item)}>
-                          <Eye className="h-4 w-4 mr-2" />
-                          View
-                        </ContextMenuItem>
-                        {item.permissions?.canDownload === 'true' && (
-                          <ContextMenuItem onClick={() => downloadFile(item)}>
-                            <Download className="h-4 w-4 mr-2" />
-                            Download
-                          </ContextMenuItem>
-                        )}
-                      </>
-                    )}
-
-                    {isInternalUser && (
-                      <>
-                        <ContextMenuSeparator />
-                        <ContextMenuSub>
-                          <ContextMenuSubTrigger>
-                            <Shield className="h-4 w-4 mr-2" />
-                            Change Category
-                          </ContextMenuSubTrigger>
-                          <ContextMenuSubContent>
-                            {Object.entries(categoryConfig).map(([key, config]) => (
-                              <ContextMenuItem
-                                key={key}
-                                onClick={() => {
-                                  if (item.type === 'folder') {
-                                    // Show dialog for folders
-                                    setSelectedFile(item);
-                                    setNewCategory(key);
-                                    setCategoryDialogOpen(true);
-                                  } else {
-                                    // Change immediately for files
-                                    changeCategory(item.id, key, false);
-                                  }
-                                }}
-                              >
-                                <config.icon className={cn("h-4 w-4 mr-2", config.color)} />
-                                {config.label}
-                              </ContextMenuItem>
-                            ))}
-                          </ContextMenuSubContent>
-                        </ContextMenuSub>
-
-                        <ContextMenuItem
-                          onClick={() => {
-                            setSelectedFile(item);
-                            setShareDialogOpen(true);
+                          onClick={() => toggleItemSelection(item.id)}
+                          onDoubleClick={() => {
+                            if (item.type === 'folder') {
+                              handleFolderOpen(item);
+                            }
                           }}
                         >
-                          <Share2 className="h-4 w-4 mr-2" />
-                          Share
-                        </ContextMenuItem>
-
-                        {item.permissions?.canEdit && (
-                          <ContextMenuItem onClick={() => {
-                            setSelectedFile(item);
-                            setDialogValue(item.name);
-                            setRenameDialogOpen(true);
-                          }}>
-                            <Edit2 className="h-4 w-4 mr-2" />
-                            Rename
-                          </ContextMenuItem>
-                        )}
-                      </>
-                    )}
+                          <div className="relative">
+                            {item.type === 'folder' ? (
+                              <Folder className="h-12 w-12 text-blue-500" />
+                            ) : (
+                              <File className="h-12 w-12 text-gray-500" />
+                            )}
+                            <CategoryIcon className={cn("h-4 w-4 absolute -bottom-1 -right-1", categoryColor)} />
+                          </div>
+
+                          <span className="mt-2 text-sm text-center truncate w-full">
+                            {item.name}
+                          </span>
 
-                    {item.permissions?.canDelete && (
-                      <>
-                        <ContextMenuSeparator />
-                        <ContextMenuItem
-                          className="text-destructive"
-                          onClick={() => deleteItems([item.id])}
-                        >
-                          <Trash2 className="h-4 w-4 mr-2" />
-                          Delete
-                        </ContextMenuItem>
-                      </>
-                    )}
-                  </ContextMenuContent>
-                </ContextMenu>
-              );
-            })}
-          </div>
-        ) : (
-          // Tree View
-          <div className="space-y-1">
-            {filteredTreeItems.map((item) => (
-              <TreeItem
-                key={item.id}
-                item={item}
-                level={0}
-                expandedFolders={expandedFolders}
-                selectedItems={selectedItems}
-                onToggleExpand={toggleFolderExpand}
-                onSelectItem={toggleItemSelection}
-                onDoubleClick={handleFolderOpen}
-                onView={viewFile}
-                onDownload={downloadFile}
-                onDownloadFolder={downloadFolder}
-                onDelete={deleteItems}
-                onShare={(item) => {
-                  setSelectedFile(item);
-                  setShareDialogOpen(true);
-                }}
-                onRename={(item) => {
-                  setSelectedFile(item);
-                  setDialogValue(item.name);
-                  setRenameDialogOpen(true);
-                }}
-                isInternalUser={isInternalUser}
-              />
-            ))}
+                          {item.viewCount !== undefined && (
+                            <div className="flex items-center gap-2 mt-1">
+                              <span className="text-xs text-muted-foreground flex items-center">
+                                <Eye className="h-3 w-3 mr-1" />
+                                {item.viewCount}
+                              </span>
+                              {item.downloadCount !== undefined && (
+                                <span className="text-xs text-muted-foreground flex items-center">
+                                  <Download className="h-3 w-3 mr-1" />
+                                  {item.downloadCount}
+                                </span>
+                              )}
+                            </div>
+                          )}
+                        </div>
+                      </ContextMenuTrigger>
+
+                      {/* ... ContextMenuContent는 동일 ... */}
+                    </ContextMenu>
+                  );
+                })}
+              </div>
+            ) : (
+              // Tree View
+              <div className="space-y-1">
+                {filteredTreeItems.map((item) => (
+                  <TreeItem
+                    key={item.id}
+                    item={item}
+                    level={0}
+                    expandedFolders={expandedFolders}
+                    selectedItems={selectedItems}
+                    onToggleExpand={toggleFolderExpand}
+                    onSelectItem={toggleItemSelection}
+                    onDoubleClick={handleFolderOpen}
+                    onView={viewFile}
+                    onDownload={downloadFile}
+                    onDownloadFolder={downloadFolder}
+                    onDelete={deleteItems}
+                    onShare={(item) => {
+                      setSelectedFile(item);
+                      setShareDialogOpen(true);
+                    }}
+                    onRename={(item) => {
+                      setSelectedFile(item);
+                      setDialogValue(item.name);
+                      setRenameDialogOpen(true);
+                    }}
+                    isInternalUser={isInternalUser}
+                  />
+                ))}
+              </div>
+            )}
           </div>
-        )}
-      </ScrollArea>
+        </ScrollArea>
+      </div>
 
       {/* Upload Dialog */}
       <Dialog open={uploadDialogOpen} onOpenChange={setUploadDialogOpen}>
-        <DialogContent className="max-w-2xl">
+        <DialogContent className="max-w-2xl max-h-[90vh] flex flex-col">
           <DialogHeader>
             <DialogTitle>Upload Files</DialogTitle>
             <DialogDescription>
@@ -1296,138 +1164,154 @@ export function FileManager({ projectId }: FileManagerProps) {
             </DialogDescription>
           </DialogHeader>
 
-          <div className="space-y-4">
-            {/* Category Selection */}
-            <div>
-              <Label htmlFor="upload-category">Category</Label>
-              <Select value={uploadCategory} onValueChange={setUploadCategory}>
-                <SelectTrigger>
-                  <SelectValue />
-                </SelectTrigger>
-                <SelectContent>
-                  {Object.entries(categoryConfig)
-                    .filter(([key]) => {
-                      // 현재 폴더가 있는 경우
-                      if (currentParentId) {
-                        const currentFolder = items.find(item => item.parentId === currentParentId);
-                        // 현재 폴더가 public이 아니면 public 옵션 제외
-                        if (currentFolder && currentFolder.category !== 'public') {
-                          return key !== 'public';
+          <ScrollArea className="flex-1 pr-4">
+            <div className="space-y-4">
+              {/* Category Selection */}
+              <div>
+                <Label htmlFor="upload-category">Category</Label>
+                <Select value={uploadCategory} onValueChange={setUploadCategory}>
+                  <SelectTrigger>
+                    <SelectValue />
+                  </SelectTrigger>
+                  <SelectContent>
+                    {Object.entries(categoryConfig)
+                      .filter(([key]) => {
+                        // 현재 폴더가 있는 경우
+                        if (currentParentId) {
+                          const currentFolder = items.find(item => item.parentId === currentParentId);
+                          // 현재 폴더가 public이 아니면 public 옵션 제외
+                          if (currentFolder && currentFolder.category !== 'public') {
+                            return key !== 'public';
+                          }
                         }
-                      }
-                      // 루트 폴더이거나 현재 폴더가 public인 경우 모든 옵션 표시
-                      return true;
-                    })
-                    .map(([key, config]) => (
-                      <SelectItem key={key} value={key}>
-                        <div className="flex items-center">
-                          <config.icon className={cn("h-4 w-4 mr-2", config.color)} />
-                          <span>{config.label}</span>
-                        </div>
-                      </SelectItem>
-                    ))}
-                </SelectContent>
-              </Select>
-              {/* 현재 폴더 정보 표시 (선택사항) */}
-              {currentParentId && (() => {
-                const currentFolder = items.find(item => item.parentId === currentParentId);
-                if (currentFolder && currentFolder.category !== 'public') {
-                  return (
-                    <p className="text-xs text-muted-foreground mt-1 flex items-center">
-                      <AlertCircle className="h-3 w-3 mr-1" />
-                      Current folder is {categoryConfig[currentFolder.category].label}.
-                      Public uploads are not allowed.
-                    </p>
-                  );
-                }
-              })()}
-            </div>
+                        // 루트 폴더이거나 현재 폴더가 public인 경우 모든 옵션 표시
+                        return true;
+                      })
+                      .map(([key, config]) => (
+                        <SelectItem key={key} value={key}>
+                          <div className="flex items-center">
+                            <config.icon className={cn("h-4 w-4 mr-2", config.color)} />
+                            <span>{config.label}</span>
+                          </div>
+                        </SelectItem>
+                      ))}
+                  </SelectContent>
+                </Select>
+                {/* 현재 폴더 정보 표시 (선택사항) */}
+                {currentParentId && (() => {
+                  const currentFolder = items.find(item => item.parentId === currentParentId);
+                  if (currentFolder && currentFolder.category !== 'public') {
+                    return (
+                      <p className="text-xs text-muted-foreground mt-1 flex items-center">
+                        <AlertCircle className="h-3 w-3 mr-1" />
+                        Current folder is {categoryConfig[currentFolder.category].label}.
+                        Public uploads are not allowed.
+                      </p>
+                    );
+                  }
+                })()}
+              </div>
 
-            {/* Dropzone */}
-            <Dropzone
-              onDrop={(acceptedFiles: File[]) => {
-                handleFileUpload(acceptedFiles);
-              }}
-              accept={{
-                'application/pdf': ['.pdf'],
-                'application/msword': ['.doc'],
-                'application/vnd.openxmlformats-officedocument.wordprocessingml.document': ['.docx'],
-                'application/vnd.ms-excel': ['.xls'],
-                'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet': ['.xlsx'],
-                'application/vnd.ms-powerpoint': ['.ppt'],
-                'application/vnd.openxmlformats-officedocument.presentationml.presentation': ['.pptx'],
-                'text/plain': ['.txt'],
-                'text/csv': ['.csv'],
-                'image/*': ['.png', '.jpg', '.jpeg', '.gif', '.bmp', '.webp'],
-                'application/zip': ['.zip'],
-                'application/x-rar-compressed': ['.rar'],
-                'application/x-7z-compressed': ['.7z'],
-                'application/x-dwg': ['.dwg'],
-                'application/x-dxf': ['.dxf'],
-              }}
-              multiple={true}
-              disabled={false}
-            >
-              <DropzoneZone className="h-48 border-2 border-dashed border-gray-300 rounded-lg">
-                <DropzoneInput />
-                <div className="flex flex-col items-center justify-center h-full">
-                  <DropzoneUploadIcon className="h-12 w-12 text-muted-foreground mb-4" />
-                  <DropzoneTitle>Drag files or click to upload</DropzoneTitle>
-                  <DropzoneDescription>Multiple files can be uploaded simultaneously</DropzoneDescription>
-                </div>
-              </DropzoneZone>
-            </Dropzone>
-
-            {/* Uploading File List */}
-            {uploadingFiles.length > 0 && (
-              <FileList>
-                <FileListHeader>Uploading Files</FileListHeader>
-                {uploadingFiles.map((uploadFile, index) => (
-                  <FileListItem key={index}>
-                    <FileListIcon>
-                      <File className="h-4 w-4" />
-                    </FileListIcon>
-                    <FileListInfo>
-                      <FileListName>{uploadFile.file.name}</FileListName>
-                      <FileListDescription>
-                        <div className="flex items-center gap-2">
-                          <FileListSize>{uploadFile.file.size}</FileListSize>
-                          {uploadFile.status === 'uploading' && <span>Uploading...</span>}
-                          {uploadFile.status === 'processing' && <span>Processing...</span>}
-                          {uploadFile.status === 'completed' && (
-                            <span className="text-green-600">Complete</span>
-                          )}
-                          {uploadFile.status === 'error' && (
-                            <span className="text-red-600">{uploadFile.error}</span>
+              {/* Dropzone */}
+              <Dropzone
+                onDrop={(acceptedFiles: File[]) => {
+                  handleFileUpload(acceptedFiles);
+                }}
+                accept={{
+                  'application/pdf': ['.pdf'],
+                  'application/msword': ['.doc'],
+                  'application/vnd.openxmlformats-officedocument.wordprocessingml.document': ['.docx'],
+                  'application/vnd.ms-excel': ['.xls'],
+                  'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet': ['.xlsx'],
+                  'application/vnd.ms-powerpoint': ['.ppt'],
+                  'application/vnd.openxmlformats-officedocument.presentationml.presentation': ['.pptx'],
+                  'text/plain': ['.txt'],
+                  'text/csv': ['.csv'],
+                  'image/*': ['.png', '.jpg', '.jpeg', '.gif', '.bmp', '.webp'],
+                  'application/zip': ['.zip'],
+                  'application/x-rar-compressed': ['.rar'],
+                  'application/x-7z-compressed': ['.7z'],
+                  'application/x-dwg': ['.dwg'],
+                  'application/x-dxf': ['.dxf'],
+                }}
+                multiple={true}
+                disabled={false}
+              >
+                <DropzoneZone className="h-48 border-2 border-dashed border-gray-300 rounded-lg">
+                  <DropzoneInput />
+                  <div className="flex flex-col items-center justify-center h-full">
+                    <DropzoneUploadIcon className="h-12 w-12 text-muted-foreground mb-4" />
+                    <DropzoneTitle>Drag files or click to upload</DropzoneTitle>
+                    <DropzoneDescription>Multiple files can be uploaded simultaneously</DropzoneDescription>
+                  </div>
+                </DropzoneZone>
+              </Dropzone>
+
+              {/* Uploading File List */}
+              {uploadingFiles.length > 0 && (
+                <div className="border rounded-lg p-4 bg-muted/50">
+                  <div className="flex items-center justify-between mb-3">
+                    <h4 className="font-medium text-sm">
+                      Uploading Files ({uploadingFiles.filter(f => f.status === 'completed').length}/{uploadingFiles.length})
+                    </h4>
+                    {uploadingFiles.every(f => f.status === 'completed' || f.status === 'error') && (
+                      <Button
+                        size="sm"
+                        variant="ghost"
+                        onClick={() => setUploadingFiles([])}
+                      >
+                        <X className="h-4 w-4" />
+                      </Button>
+                    )}
+                  </div>
+                  <div className="space-y-2 max-h-[300px] overflow-y-auto">
+                    {uploadingFiles.map((uploadFile, index) => (
+                      <div key={index} className="flex items-start gap-3 p-3 bg-background rounded-md">
+                        <File className="h-5 w-5 mt-0.5 flex-shrink-0 text-muted-foreground" />
+                        <div className="flex-1 min-w-0">
+                          <p className="text-sm font-medium truncate">{uploadFile.file.name}</p>
+                          <div className="flex items-center gap-2 mt-1">
+                            <span className="text-xs text-muted-foreground">
+                              {formatFileSize(uploadFile.file.size)}
+                            </span>
+                            <span className="text-xs">
+                              {uploadFile.status === 'pending' && 'Waiting...'}
+                              {uploadFile.status === 'uploading' && 'Uploading...'}
+                              {uploadFile.status === 'processing' && 'Processing...'}
+                              {uploadFile.status === 'completed' && (
+                                <span className="text-green-600 font-medium">✓ Complete</span>
+                              )}
+                              {uploadFile.status === 'error' && (
+                                <span className="text-red-600 font-medium">✗ {uploadFile.error}</span>
+                              )}
+                            </span>
+                          </div>
+                          {(uploadFile.status === 'uploading' || uploadFile.status === 'processing') && (
+                            <Progress value={uploadFile.progress} className="h-1.5 mt-2" />
                           )}
                         </div>
-                        {(uploadFile.status === 'uploading' || uploadFile.status === 'processing') && (
-                          <Progress value={uploadFile.progress} className="h-1 mt-1" />
+                        {uploadFile.status === 'error' && (
+                          <Button
+                            size="sm"
+                            variant="ghost"
+                            onClick={() => {
+                              setUploadingFiles(prev =>
+                                prev.filter((_, i) => i !== index)
+                              );
+                            }}
+                          >
+                            <X className="h-4 w-4" />
+                          </Button>
                         )}
-                      </FileListDescription>
-                    </FileListInfo>
-                    <FileListAction>
-                      {uploadFile.status === 'error' && (
-                        <Button
-                          size="sm"
-                          variant="ghost"
-                          onClick={() => {
-                            setUploadingFiles(prev =>
-                              prev.filter((_, i) => i !== index)
-                            );
-                          }}
-                        >
-                          <X className="h-4 w-4" />
-                        </Button>
-                      )}
-                    </FileListAction>
-                  </FileListItem>
-                ))}
-              </FileList>
-            )}
-          </div>
+                      </div>
+                    ))}
+                  </div>
+                </div>
+              )}
+            </div>
+          </ScrollArea>
 
-          <DialogFooter>
+          <DialogFooter className="mt-4">
             <Button
               variant="outline"
               onClick={() => {
@@ -1491,131 +1375,6 @@ export function FileManager({ projectId }: FileManagerProps) {
         </DialogContent>
       </Dialog>
 
-      {/* File Share Dialog */}
-      <Dialog open={shareDialogOpen} onOpenChange={setShareDialogOpen}>
-        <DialogContent className="max-w-md">
-          <DialogHeader>
-            <DialogTitle>Share File</DialogTitle>
-            <DialogDescription>
-              Sharing {selectedFile?.name}.
-            </DialogDescription>
-          </DialogHeader>
-
-          <Tabs defaultValue="link" className="w-full">
-            <TabsList className="grid w-full grid-cols-2">
-              <TabsTrigger value="link">Link Sharing</TabsTrigger>
-              <TabsTrigger value="permission">Permission Settings</TabsTrigger>
-            </TabsList>
-
-            <TabsContent value="link" className="space-y-4">
-              <div>
-                <Label htmlFor="access-level">Access Level</Label>
-                <Select
-                  value={shareSettings.accessLevel}
-                  onValueChange={(value) => setShareSettings({ ...shareSettings, accessLevel: value })}
-                >
-                  <SelectTrigger>
-                    <SelectValue />
-                  </SelectTrigger>
-                  <SelectContent>
-                    <SelectItem value="view_only">
-                      <div className="flex items-center">
-                        <Eye className="h-4 w-4 mr-2" />
-                        View Only
-                      </div>
-                    </SelectItem>
-                    <SelectItem value="view_download">
-                      <div className="flex items-center">
-                        <Download className="h-4 w-4 mr-2" />
-                        View + Download
-                      </div>
-                    </SelectItem>
-                  </SelectContent>
-                </Select>
-              </div>
-
-              <div>
-                <Label htmlFor="password">Password (Optional)</Label>
-                <Input
-                  id="password"
-                  type="password"
-                  value={shareSettings.password}
-                  onChange={(e) => setShareSettings({ ...shareSettings, password: e.target.value })}
-                  placeholder="Enter password"
-                />
-              </div>
-
-              <div>
-                <Label htmlFor="expires">Expiry Date (Optional)</Label>
-                <Input
-                  id="expires"
-                  type="datetime-local"
-                  value={shareSettings.expiresAt}
-                  onChange={(e) => setShareSettings({ ...shareSettings, expiresAt: e.target.value })}
-                />
-              </div>
-
-              <div>
-                <Label htmlFor="max-downloads">Max Downloads (Optional)</Label>
-                <Input
-                  id="max-downloads"
-                  type="number"
-                  value={shareSettings.maxDownloads}
-                  onChange={(e) => setShareSettings({ ...shareSettings, maxDownloads: e.target.value })}
-                  placeholder="Unlimited"
-                />
-              </div>
-            </TabsContent>
-
-            <TabsContent value="permission" className="space-y-4">
-              <div>
-                <Label htmlFor="target-domain">Target Domain</Label>
-                <Select>
-                  <SelectTrigger>
-                    <SelectValue placeholder="Select domain" />
-                  </SelectTrigger>
-                  <SelectContent>
-                    <SelectItem value="partners">Partners</SelectItem>
-                    <SelectItem value="internal">Internal</SelectItem>
-                  </SelectContent>
-                </Select>
-              </div>
-
-              <div className="space-y-2">
-                <Label>Permissions</Label>
-                <div className="space-y-2">
-                  <div className="flex items-center justify-between">
-                    <Label htmlFor="can-view" className="text-sm font-normal">View</Label>
-                    <Switch id="can-view" defaultChecked />
-                  </div>
-                  <div className="flex items-center justify-between">
-                    <Label htmlFor="can-download" className="text-sm font-normal">Download</Label>
-                    <Switch id="can-download" />
-                  </div>
-                  <div className="flex items-center justify-between">
-                    <Label htmlFor="can-edit" className="text-sm font-normal">Edit</Label>
-                    <Switch id="can-edit" />
-                  </div>
-                  <div className="flex items-center justify-between">
-                    <Label htmlFor="can-share" className="text-sm font-normal">Share</Label>
-                    <Switch id="can-share" />
-                  </div>
-                </div>
-              </div>
-            </TabsContent>
-          </Tabs>
-
-          <DialogFooter>
-            <Button variant="outline" onClick={() => setShareDialogOpen(false)}>
-              Cancel
-            </Button>
-            <Button onClick={shareFile}>
-              <Share2 className="h-4 w-4 mr-2" />
-              Create Share Link
-            </Button>
-          </DialogFooter>
-        </DialogContent>
-      </Dialog>
 
       {/* Rename Dialog */}
       <Dialog open={renameDialogOpen} onOpenChange={setRenameDialogOpen}>
diff --git a/components/file-manager/SecurePDFViewer.tsx b/components/file-manager/SecurePDFViewer.tsx
index cd7c081a..707d95dc 100644
--- a/components/file-manager/SecurePDFViewer.tsx
+++ b/components/file-manager/SecurePDFViewer.tsx
@@ -5,6 +5,7 @@ import { useSession } from 'next-auth/react';
 import { WebViewerInstance } from '@pdftron/webviewer';
 import { Loader2 } from 'lucide-react';
 import { toast } from 'sonner';
+import { createCustomWatermark } from './creaetWaterMarks';
 
 interface SecurePDFViewerProps {
   documentUrl: string;
@@ -194,14 +195,16 @@ export function SecurePDFViewer({ documentUrl, fileName, onClose }: SecurePDFVie
         const watermarkText = `${session?.user?.email || 'CONFIDENTIAL'}\n${new Date().toLocaleString()}`;
         
         // 대각선 워터마크
-        documentViewer.setWatermark({
+        documentViewer.setWatermark(
+          {custom:createCustomWatermark({
           text: watermarkText,
           fontSize: 30,
           fontFamily: 'Arial',
           color: 'rgba(255, 0, 0, 0.3)',
           opacity: 30,
-          diagonal: true,
-        });
+          // diagonal: true,
+        })}
+      );
 
         // 각 페이지에 커스텀 워터마크 추가
         const pageCount = documentViewer.getPageCount();
diff --git a/components/file-manager/creaetWaterMarks.tsx b/components/file-manager/creaetWaterMarks.tsx
new file mode 100644
index 00000000..524b18ee
--- /dev/null
+++ b/components/file-manager/creaetWaterMarks.tsx
@@ -0,0 +1,71 @@
+export const createCustomWatermark: CreateCustomWatermark = ({
+    text,
+    fontSize,
+    color,
+    opacity,
+    rotation = -45,
+    fontFamily = "Helvetica",
+  }) => {
+    return (ctx, pageNumber, pageWidth, pageHeight) => {
+      if (!text) return;
+   
+      const lines = text.split("\n"); // 줄바꿈 기준 멀치 처리
+   
+      ctx.save();
+      ctx.translate(pageWidth / 2, pageHeight / 2);
+      ctx.rotate((rotation * Math.PI) / 180);
+      ctx.fillStyle = color;
+      ctx.textAlign = "center";
+      ctx.textBaseline = "middle";
+   
+      const lineHeights = lines.map((s) => {
+        return fontSize;
+      });
+   
+      const totalHeight =
+        lineHeights.reduce((sum, h) => sum + h, 0) - lineHeights[0]; // 첫 줄은 기준선 0
+   
+      let yOffset = -totalHeight / 2;
+   
+      lines.forEach((line, i) => {
+        ctx.font = `900 ${fontSize}px ${fontFamily}`;
+        ctx.fillText(line, 0, yOffset);
+        yOffset += lineHeights[i];
+      });
+   
+      ctx.restore();
+    };
+  };
+   
+
+  import { Core, WebViewerInstance } from "@pdftron/webviewer";
+
+export interface WaterMarkOption {
+  fontSize: number;
+  color: string;
+  opacity: number;
+  rotation: number;
+  fontFamily: string;
+  split: boolean;
+  shipNameCheck: boolean;
+  shipName: string;
+  ownerNameCheck: boolean;
+  ownerName: string;
+  classNameCheck: boolean;
+  className: string;
+  classList: string[];
+  customCheck: boolean;
+  text: string;
+}
+
+type CreateCustomWatermark = ({
+  text,
+  fontSize,
+  color,
+  opacity,
+  rotation,
+  fontFamily,
+}: Pick<
+  WaterMarkOption,
+  "text" | "fontSize" | "color" | "opacity" | "rotation" | "fontFamily"
+>) => Core.DocumentViewer.CustomWatermarkCallback;
\ No newline at end of file