re-arrange functuon call message parse logic

libs/community/langchain_community/chat_models/baidu_qianfan_endpoint.py

@@ -66,17 +66,13 @@ def convert_message_to_dict(message: BaseMessage) -> dict:
         message_dict = {"role": "user", "content": message.content}
     elif isinstance(message, AIMessage):
         message_dict = {"role": "assistant", "content": message.content}
-        if "function_call" in message.additional_kwargs:
-            message_dict["function_call"] = message.additional_kwargs["function_call"]
-        elif len(message.tool_calls) != 0:
+        if len(message.tool_calls) != 0:
             tool_call = message.tool_calls[0]
             message_dict["function_call"] = {
                 "name": tool_call["name"],
-                "args": tool_call["args"],
+                "arguments": json.dumps(tool_call["args"], ensure_ascii=False),
             }
-
-        # If function call only, content is None not empty string
-        if "function_call" in message_dict and message_dict["content"] == "":
+            # If function call only, content is None not empty string
             message_dict["content"] = None
     elif isinstance(message, (FunctionMessage, ToolMessage)):
         message_dict = {