[MODIFY] MEM SEE OUTPUT

api/app/utils/sse_utils.py

@@ -0,0 +1,27 @@
+"""
+Server-Sent Events (SSE) Utility Functions
+
+Provides shared utilities for formatting and handling SSE messages.
+"""
+
+import json
+from typing import Dict, Any
+
+
+def format_sse_message(event_type: str, data: Dict[str, Any]) -> str:
+    """
+    Format a message in Server-Sent Events (SSE) format.
+    
+    Args:
+        event_type: Type of event (stage name, result, error, done)
+        data: Event data dictionary to be serialized as JSON
+        
+    Returns:
+        SSE formatted string: "event: <type>\\ndata: <json>\\n\\n"
+        
+    Example:
+        >>> format_sse_message("loading", {"message": "Loading..."})
+        'event: loading\\ndata: {"message": "Loading..."}\\n\\n'
+    """
+    json_data = json.dumps(data, ensure_ascii=False)
+    return f"event: {event_type}\ndata: {json_data}\n\n"