feat: Enhance WebDAV file management and UI

- Add functionality to create new collections via API
- Implement copy and move operations between collections
- Improve image rendering in markdown preview with relative path resolution
- Add support for previewing binary files (images, PDFs)
- Refactor modal styling to use flat buttons and improve accessibility

server_webdav.py

@@ -28,8 +28,16 @@ class MarkdownEditorApp:
     
     def load_config(self, config_path):
         """Load configuration from YAML file"""
+        self.config_path = config_path
         with open(config_path, 'r') as f:
             return yaml.safe_load(f)
+
+    def save_config(self):
+        """Save configuration to YAML file"""
+        # Update config with current collections
+        self.config['collections'] = self.collections
+        with open(self.config_path, 'w') as f:
+            yaml.dump(self.config, f, default_flow_style=False, sort_keys=False)
     
     def setup_collections(self):
         """Create collection directories if they don't exist"""
@@ -92,6 +100,10 @@ class MarkdownEditorApp:
         if path == '/fs/' and method == 'GET':
             return self.handle_collections_list(environ, start_response)
 
+        # API to create new collection
+        if path == '/fs/' and method == 'POST':
+            return self.handle_create_collection(environ, start_response)
+
         # Check if path starts with a collection name (for SPA routing)
         # This handles URLs like /notes/ttt or /documents/file.md
         # MUST be checked BEFORE WebDAV routing to prevent WebDAV from intercepting SPA routes
@@ -113,14 +125,86 @@ class MarkdownEditorApp:
         """Return list of available collections"""
         collections = list(self.collections.keys())
         response_body = json.dumps(collections).encode('utf-8')
-        
+
         start_response('200 OK', [
             ('Content-Type', 'application/json'),
             ('Content-Length', str(len(response_body))),
             ('Access-Control-Allow-Origin', '*')
         ])
-        
+
         return [response_body]
+
+    def handle_create_collection(self, environ, start_response):
+        """Create a new collection"""
+        try:
+            # Read request body
+            content_length = int(environ.get('CONTENT_LENGTH', 0))
+            request_body = environ['wsgi.input'].read(content_length)
+            data = json.loads(request_body.decode('utf-8'))
+
+            collection_name = data.get('name')
+            if not collection_name:
+                start_response('400 Bad Request', [('Content-Type', 'application/json')])
+                return [json.dumps({'error': 'Collection name is required'}).encode('utf-8')]
+
+            # Check if collection already exists
+            if collection_name in self.collections:
+                start_response('409 Conflict', [('Content-Type', 'application/json')])
+                return [json.dumps({'error': f'Collection "{collection_name}" already exists'}).encode('utf-8')]
+
+            # Create collection directory
+            collection_path = Path(f'./collections/{collection_name}')
+            collection_path.mkdir(parents=True, exist_ok=True)
+
+            # Create images subdirectory
+            images_path = collection_path / 'images'
+            images_path.mkdir(exist_ok=True)
+
+            # Add to collections dict
+            self.collections[collection_name] = {
+                'path': str(collection_path),
+                'description': f'User-created collection: {collection_name}'
+            }
+
+            # Update config file
+            self.save_config()
+
+            # Add to WebDAV provider mapping
+            from wsgidav.fs_dav_provider import FilesystemProvider
+            provider_path = os.path.abspath(str(collection_path))
+            provider_key = f'/fs/{collection_name}'
+
+            # Use the add_provider method if available, otherwise add directly to provider_map
+            provider = FilesystemProvider(provider_path)
+            if hasattr(self.webdav_app, 'add_provider'):
+                self.webdav_app.add_provider(provider_key, provider)
+                print(f"Added provider using add_provider(): {provider_key}")
+            else:
+                self.webdav_app.provider_map[provider_key] = provider
+                print(f"Added provider to provider_map: {provider_key}")
+
+            # Also update sorted_share_list if it exists
+            if hasattr(self.webdav_app, 'sorted_share_list'):
+                if provider_key not in self.webdav_app.sorted_share_list:
+                    self.webdav_app.sorted_share_list.append(provider_key)
+                    self.webdav_app.sorted_share_list.sort(reverse=True)
+                    print(f"Updated sorted_share_list")
+
+            print(f"Created collection '{collection_name}' at {provider_path}")
+
+            response_body = json.dumps({'success': True, 'name': collection_name}).encode('utf-8')
+            start_response('201 Created', [
+                ('Content-Type', 'application/json'),
+                ('Content-Length', str(len(response_body))),
+                ('Access-Control-Allow-Origin', '*')
+            ])
+
+            return [response_body]
+
+        except Exception as e:
+            print(f"Error creating collection: {e}")
+            start_response('500 Internal Server Error', [('Content-Type', 'application/json')])
+            return [json.dumps({'error': str(e)}).encode('utf-8')]
     
     def handle_static(self, environ, start_response):
         """Serve static files"""