Update main.py

main.py

@@ -736,6 +736,114 @@ async def chat(request: ChatRequest):
     )
 
 
+@app.get("/chat/history/{session_id}")
+async def get_conversation_history(session_id: str, include_metadata: bool = False):
+    """
+    Get conversation history for a session
+    
+    Args:
+        session_id: Session identifier
+        include_metadata: Include metadata (rag_stats, tool_calls) in response
+    
+    Returns:
+        List of messages with role and content
+        
+    Example:
+    ```
+    GET /chat/history/abc-123?include_metadata=true
+    ```
+    """
+    if not conversation_service.session_exists(session_id):
+        raise HTTPException(
+            status_code=404,
+            detail=f"Session {session_id} not found or has expired"
+        )
+    
+    history = conversation_service.get_conversation_history(
+        session_id,
+        include_metadata=include_metadata
+    )
+    
+    session_info = conversation_service.get_session_info(session_id)
+    
+    return {
+        "session_id": session_id,
+        "message_count": len(history),
+        "messages": history,
+        "created_at": session_info.get("created_at") if session_info else None,
+        "updated_at": session_info.get("updated_at") if session_info else None
+    }
+
+
+@app.post("/chat/clear-session")
+async def clear_chat_session(session_id: str):
+    """
+    Clear conversation history for a session
+    
+    Args:
+        session_id: Session identifier to clear
+    
+    Returns:
+        Success message
+        
+    Example:
+    ```
+    POST /chat/clear-session?session_id=abc-123
+    ```
+    """
+    success = conversation_service.clear_session(session_id)
+    
+    if success:
+        return {
+            "success": True,
+            "message": f"Session {session_id} cleared successfully"
+        }
+    else:
+        raise HTTPException(
+            status_code=404,
+            detail=f"Session {session_id} not found or already cleared"
+        )
+
+
+@app.get("/chat/session/{session_id}")
+async def get_session_info(session_id: str):
+    """
+    Get metadata about a conversation session
+    
+    Args:
+        session_id: Session identifier
+    
+    Returns:
+        Session info including creation time and message count
+        
+    Example:
+    ```
+    GET /chat/session/abc-123
+    ```
+    """
+    session = conversation_service.get_session_info(session_id)
+    
+    if not session:
+        raise HTTPException(
+            status_code=404,
+            detail=f"Session {session_id} not found"
+        )
+    
+    # Get message count
+    history = conversation_service.get_conversation_history(
+        session_id,
+        include_metadata=True
+    )
+    
+    return {
+        "session_id": session["session_id"],
+        "created_at": session["created_at"],
+        "updated_at": session["updated_at"],
+        "message_count": len(history),
+        "metadata": session.get("metadata", {})
+    }
+
+
 @app.post("/documents", response_model=AddDocumentResponse)
 async def add_document(request: AddDocumentRequest):
     """