feat: Add delete button for uploaded CSV files in admin panel

- Added delete button (trash icon) next to each uploaded file in the import section
- Implemented DELETE endpoint at /admin/delete-file/{filename} with authentication and validation
- Added JavaScript function to handle file deletion with confirmation dialog
- Includes security checks for directory traversal and file existence
- Logs file deletion actions with username for audit trail
- UI automatically refreshes after successful deletion

app/main.py

@@ -1803,6 +1803,61 @@ async def admin_sync_data(
         })
 
 
+@app.delete("/admin/delete-file/{filename}")
+async def admin_delete_file(
+    request: Request,
+    filename: str,
+    db: Session = Depends(get_db)
+):
+    """
+    Delete an uploaded CSV file from the data-import directory.
+    
+    Requires authentication and validates that the file exists.
+    """
+    # Check authentication
+    user = get_current_user_from_session(request.session)
+    if not user:
+        raise HTTPException(status_code=401, detail="Unauthorized")
+    
+    # Validate filename to prevent directory traversal
+    if ".." in filename or "/" in filename or "\\" in filename:
+        raise HTTPException(status_code=400, detail="Invalid filename")
+    
+    # Construct file path
+    import_dir = "data-import"
+    file_path = os.path.join(import_dir, filename)
+    
+    # Check if file exists
+    if not os.path.exists(file_path):
+        raise HTTPException(status_code=404, detail="File not found")
+    
+    # Check if it's actually a file (not a directory)
+    if not os.path.isfile(file_path):
+        raise HTTPException(status_code=400, detail="Not a file")
+    
+    try:
+        # Delete the file
+        os.remove(file_path)
+        
+        # Log the deletion
+        logger.info(
+            "admin_delete_file",
+            filename=filename,
+            username=user.username,
+        )
+        
+        return {"success": True, "message": f"File '{filename}' deleted successfully"}
+    
+    except Exception as e:
+        logger.error(
+            "admin_delete_file_error",
+            filename=filename,
+            username=user.username,
+            error=str(e)
+        )
+        raise HTTPException(status_code=500, detail=f"Error deleting file: {str(e)}")
+
+
 @app.get("/admin")
 async def admin_panel(request: Request, db: Session = Depends(get_db)):
     """

app/templates/admin.html

@@ -475,13 +475,18 @@
                                             <div class="list-group">
                                                 {% for file in files %}
                                                 <label class="list-group-item d-flex justify-content-between align-items-center">
-                                                    <div>
+                                                    <div class="flex-grow-1">
                                                         <input class="form-check-input me-2 file-checkbox" type="checkbox"
                                                                name="selected_files" value="{{ file.filename }}" id="{{ file.filename }}">
                                                         <small class="text-muted">{{ file.filename }}</small>
                                                         <br>
                                                         <small class="text-muted">{{ file.size }} bytes • {{ file.modified.strftime('%Y-%m-%d %H:%M') }}</small>
                                                     </div>
+                                                    <button type="button" class="btn btn-sm btn-outline-danger delete-file-btn" 
+                                                            data-filename="{{ file.filename }}"
+                                                            onclick="deleteFile('{{ file.filename }}', event)">
+                                                        <i class="bi bi-trash"></i>
+                                                    </button>
                                                 </label>
                                                 {% endfor %}
                                             </div>
@@ -747,5 +752,36 @@ function confirmSync() {
         document.getElementById('syncForm').submit();
     }
 }
+
+// Delete file function
+async function deleteFile(filename, event) {
+    // Prevent label click from triggering checkbox
+    event.preventDefault();
+    event.stopPropagation();
+    
+    if (!confirm(`Are you sure you want to delete "${filename}"?\n\nThis action cannot be undone.`)) {
+        return;
+    }
+    
+    try {
+        const response = await fetch(`/admin/delete-file/${encodeURIComponent(filename)}`, {
+            method: 'DELETE',
+            headers: {
+                'Content-Type': 'application/json'
+            }
+        });
+        
+        if (response.ok) {
+            // Reload the page to refresh the file list
+            window.location.reload();
+        } else {
+            const error = await response.json();
+            alert(`Error deleting file: ${error.detail || 'Unknown error'}`);
+        }
+    } catch (error) {
+        console.error('Error deleting file:', error);
+        alert(`Error deleting file: ${error.message}`);
+    }
+}
 </script>
 {% endblock %}