feat: Advanced file editor and file tree improvements (#444)

# Features
- File drag and drop upload: Support uploading files and folders via drag and drop
- Binary file handling: Detect binary files and display a friendly message instead of trying to edit them
- Folder download: Download folders as ZIP files (using JSZip library)
- Context menu integration: Full right-click context menu for file operations (rename, delete, copy path, download, new file/folder)

src/components/file-tree/view/FileTree.tsx

@@ -1,12 +1,15 @@
-import { useCallback, useState } from 'react';
+import { useCallback, useState, useEffect, useRef } from 'react';
 import { useTranslation } from 'react-i18next';
+import { AlertTriangle, Check, X, Loader2, Folder, Upload } from 'lucide-react';
 import { cn } from '../../../lib/utils';
 import ImageViewer from './ImageViewer';
 import { ICON_SIZE_CLASS, getFileIconData } from '../constants/fileIcons';
 import { useExpandedDirectories } from '../hooks/useExpandedDirectories';
 import { useFileTreeData } from '../hooks/useFileTreeData';
+import { useFileTreeOperations } from '../hooks/useFileTreeOperations';
 import { useFileTreeSearch } from '../hooks/useFileTreeSearch';
 import { useFileTreeViewMode } from '../hooks/useFileTreeViewMode';
+import { useFileTreeUpload } from '../hooks/useFileTreeUpload';
 import type { FileTreeImageSelection, FileTreeNode } from '../types/types';
 import { formatFileSize, formatRelativeTime, isImageFile } from '../utils/fileTreeUtils';
 import FileTreeBody from './FileTreeBody';
@@ -14,24 +17,72 @@ import FileTreeDetailedColumns from './FileTreeDetailedColumns';
 import FileTreeHeader from './FileTreeHeader';
 import FileTreeLoadingState from './FileTreeLoadingState';
 import { Project } from '../../../types/app';
+import { Input } from '../../ui/input';
+import { ScrollArea } from '../../ui/scroll-area';
 
-type FileTreeProps =  {
+type FileTreeProps = {
   selectedProject: Project | null;
   onFileOpen?: (filePath: string) => void;
-}
+};
 
 export default function FileTree({ selectedProject, onFileOpen }: FileTreeProps) {
   const { t } = useTranslation();
   const [selectedImage, setSelectedImage] = useState<FileTreeImageSelection | null>(null);
+  const [toast, setToast] = useState<{ message: string; type: 'success' | 'error' } | null>(null);
+  const newItemInputRef = useRef<HTMLInputElement>(null);
+  const renameInputRef = useRef<HTMLInputElement>(null);
 
-  const { files, loading } = useFileTreeData(selectedProject);
+  // Show toast notification
+  const showToast = useCallback((message: string, type: 'success' | 'error') => {
+    setToast({ message, type });
+  }, []);
+
+  // Auto-hide toast
+  useEffect(() => {
+    if (toast) {
+      const timer = setTimeout(() => setToast(null), 3000);
+      return () => clearTimeout(timer);
+    }
+  }, [toast]);
+
+  const { files, loading, refreshFiles } = useFileTreeData(selectedProject);
   const { viewMode, changeViewMode } = useFileTreeViewMode();
-  const { expandedDirs, toggleDirectory, expandDirectories } = useExpandedDirectories();
+  const { expandedDirs, toggleDirectory, expandDirectories, collapseAll } = useExpandedDirectories();
   const { searchQuery, setSearchQuery, filteredFiles } = useFileTreeSearch({
     files,
     expandDirectories,
   });
 
+  // File operations
+  const operations = useFileTreeOperations({
+    selectedProject,
+    onRefresh: refreshFiles,
+    showToast,
+  });
+
+  // File upload (drag and drop)
+  const upload = useFileTreeUpload({
+    selectedProject,
+    onRefresh: refreshFiles,
+    showToast,
+  });
+
+  // Focus input when creating new item
+  useEffect(() => {
+    if (operations.isCreating && newItemInputRef.current) {
+      newItemInputRef.current.focus();
+      newItemInputRef.current.select();
+    }
+  }, [operations.isCreating]);
+
+  // Focus input when renaming
+  useEffect(() => {
+    if (operations.renamingItem && renameInputRef.current) {
+      renameInputRef.current.focus();
+      renameInputRef.current.select();
+    }
+  }, [operations.renamingItem]);
+
   const renderFileIcon = useCallback((filename: string) => {
     const { icon: Icon, color } = getFileIconData(filename);
     return <Icon className={cn(ICON_SIZE_CLASS, color)} />;
@@ -70,27 +121,99 @@ export default function FileTree({ selectedProject, onFileOpen }: FileTreeProps)
   }
 
   return (
-    <div className="h-full flex flex-col bg-background">
+    <div
+      ref={upload.treeRef}
+      className="h-full flex flex-col bg-background relative"
+      onDragEnter={upload.handleDragEnter}
+      onDragOver={upload.handleDragOver}
+      onDragLeave={upload.handleDragLeave}
+      onDrop={upload.handleDrop}
+    >
+      {/* Drag overlay */}
+      {upload.isDragOver && (
+        <div className="absolute inset-0 z-50 bg-blue-500/10 border-2 border-dashed border-blue-500 flex items-center justify-center">
+          <div className="bg-background/95 px-6 py-4 rounded-lg shadow-lg flex items-center gap-3">
+            <Upload className="w-6 h-6 text-blue-500" />
+            <span className="text-sm font-medium">{t('fileTree.dropToUpload', 'Drop files to upload')}</span>
+          </div>
+        </div>
+      )}
+
       <FileTreeHeader
         viewMode={viewMode}
         onViewModeChange={changeViewMode}
         searchQuery={searchQuery}
         onSearchQueryChange={setSearchQuery}
+        onNewFile={() => operations.handleStartCreate('', 'file')}
+        onNewFolder={() => operations.handleStartCreate('', 'directory')}
+        onRefresh={refreshFiles}
+        onCollapseAll={collapseAll}
+        loading={loading}
+        operationLoading={operations.operationLoading}
       />
 
       {viewMode === 'detailed' && filteredFiles.length > 0 && <FileTreeDetailedColumns />}
 
-      <FileTreeBody
-        files={files}
-        filteredFiles={filteredFiles}
-        searchQuery={searchQuery}
-        viewMode={viewMode}
-        expandedDirs={expandedDirs}
-        onItemClick={handleItemClick}
-        renderFileIcon={renderFileIcon}
-        formatFileSize={formatFileSize}
-        formatRelativeTime={formatRelativeTimeLabel}
-      />
+      <ScrollArea className="flex-1 px-2 py-1">
+        {/* New item input */}
+        {operations.isCreating && (
+          <div
+            className="flex items-center gap-1.5 py-[3px] pr-2 mb-1"
+            style={{ paddingLeft: `${(operations.newItemParent.split('/').length - 1) * 16 + 4}px` }}
+          >
+            {operations.newItemType === 'directory' ? (
+              <Folder className={cn(ICON_SIZE_CLASS, 'text-blue-500')} />
+            ) : (
+              <span className="ml-[18px]">{renderFileIcon(operations.newItemName)}</span>
+            )}
+            <Input
+              ref={newItemInputRef}
+              type="text"
+              value={operations.newItemName}
+              onChange={(e) => operations.setNewItemName(e.target.value)}
+              onKeyDown={(e) => {
+                e.stopPropagation();
+                if (e.key === 'Enter') operations.handleConfirmCreate();
+                if (e.key === 'Escape') operations.handleCancelCreate();
+              }}
+              onBlur={() => {
+                setTimeout(() => {
+                  if (operations.isCreating) operations.handleConfirmCreate();
+                }, 100);
+              }}
+              className="h-6 text-sm flex-1"
+              disabled={operations.operationLoading}
+            />
+          </div>
+        )}
+
+        <FileTreeBody
+          files={files}
+          filteredFiles={filteredFiles}
+          searchQuery={searchQuery}
+          viewMode={viewMode}
+          expandedDirs={expandedDirs}
+          onItemClick={handleItemClick}
+          renderFileIcon={renderFileIcon}
+          formatFileSize={formatFileSize}
+          formatRelativeTime={formatRelativeTimeLabel}
+          onRename={operations.handleStartRename}
+          onDelete={operations.handleStartDelete}
+          onNewFile={(path) => operations.handleStartCreate(path, 'file')}
+          onNewFolder={(path) => operations.handleStartCreate(path, 'directory')}
+          onCopyPath={operations.handleCopyPath}
+          onDownload={operations.handleDownload}
+          onRefresh={refreshFiles}
+          // Pass rename state and handlers for inline editing
+          renamingItem={operations.renamingItem}
+          renameValue={operations.renameValue}
+          setRenameValue={operations.setRenameValue}
+          handleConfirmRename={operations.handleConfirmRename}
+          handleCancelRename={operations.handleCancelRename}
+          renameInputRef={renameInputRef}
+          operationLoading={operations.operationLoading}
+        />
+      </ScrollArea>
 
       {selectedImage && (
         <ImageViewer
@@ -98,6 +221,70 @@ export default function FileTree({ selectedProject, onFileOpen }: FileTreeProps)
           onClose={() => setSelectedImage(null)}
         />
       )}
+
+      {/* Delete Confirmation Dialog */}
+      {operations.deleteConfirmation.isOpen && operations.deleteConfirmation.item && (
+        <div className="fixed inset-0 z-[9999] flex items-center justify-center bg-black/50">
+          <div className="bg-background border border-border rounded-lg shadow-lg p-4 max-w-sm mx-4">
+            <div className="flex items-center gap-3 mb-4">
+              <div className="p-2 rounded-full bg-red-100 dark:bg-red-900/30">
+                <AlertTriangle className="w-5 h-5 text-red-600 dark:text-red-400" />
+              </div>
+              <div>
+                <h3 className="font-medium text-foreground">
+                  {t('fileTree.delete.title', 'Delete {{type}}', {
+                    type: operations.deleteConfirmation.item.type === 'directory' ? 'Folder' : 'File'
+                  })}
+                </h3>
+                <p className="text-sm text-muted-foreground">
+                  {operations.deleteConfirmation.item.name}
+                </p>
+              </div>
+            </div>
+            <p className="text-sm text-muted-foreground mb-4">
+              {operations.deleteConfirmation.item.type === 'directory'
+                ? t('fileTree.delete.folderWarning', 'This folder and all its contents will be permanently deleted.')
+                : t('fileTree.delete.fileWarning', 'This file will be permanently deleted.')}
+            </p>
+            <div className="flex justify-end gap-2">
+              <button
+                onClick={operations.handleCancelDelete}
+                disabled={operations.operationLoading}
+                className="px-3 py-1.5 text-sm rounded-md hover:bg-accent transition-colors"
+              >
+                {t('common.cancel', 'Cancel')}
+              </button>
+              <button
+                onClick={operations.handleConfirmDelete}
+                disabled={operations.operationLoading}
+                className="px-3 py-1.5 text-sm rounded-md bg-red-600 text-white hover:bg-red-700 transition-colors disabled:opacity-50 flex items-center gap-2"
+              >
+                {operations.operationLoading && <Loader2 className="w-4 h-4 animate-spin" />}
+                {t('fileTree.delete.confirm', 'Delete')}
+              </button>
+            </div>
+          </div>
+        </div>
+      )}
+
+      {/* Toast Notification */}
+      {toast && (
+        <div
+          className={cn(
+            'fixed bottom-4 right-4 z-[9999] px-4 py-2 rounded-lg shadow-lg flex items-center gap-2 animate-in slide-in-from-bottom-2',
+            toast.type === 'success'
+              ? 'bg-green-600 text-white'
+              : 'bg-red-600 text-white'
+          )}
+        >
+          {toast.type === 'success' ? (
+            <Check className="w-4 h-4" />
+          ) : (
+            <X className="w-4 h-4" />
+          )}
+          <span className="text-sm">{toast.message}</span>
+        </div>
+      )}
     </div>
   );
 }