fix: tool calling cohere

autogen/oai/cohere.py

@@ -156,7 +156,7 @@ def create(self, params: Dict) -> ChatCompletion:
         cohere_params["preamble"] = preamble
 
         # We use chat model by default
-        client = Cohere(api_key=self.api_key)
+        client = Cohere(api_key=self.api_key, client_name="autogen-cohere")
 
         # Token counts will be returned
         prompt_tokens = 0
@@ -284,6 +284,24 @@ def create(self, params: Dict) -> ChatCompletion:
 
         return response_oai
 
+def extract_to_cohere_tool_results(tool_call_id: str, content_output: str, all_tool_calls) -> List[Dict[str, Any]]:
+    temp_tool_results = []
+
+    for tool_call in all_tool_calls:
+        if tool_call["id"] == tool_call_id:
+
+            call = {
+                "name": tool_call["function"]["name"],
+                "parameters": json.loads(
+                    tool_call["function"]["arguments"]
+                    if not tool_call["function"]["arguments"] == ""
+                    else "{}"
+                ),
+            }
+            output = [{"value": content_output}]
+            temp_tool_results.append(ToolResult(call=call, outputs=output))
+    return temp_tool_results
+
 
 def oai_messages_to_cohere_messages(
     messages: list[Dict[str, Any]], params: Dict[str, Any], cohere_params: Dict[str, Any]
@@ -352,7 +370,8 @@ def oai_messages_to_cohere_messages(
     # 'content' field renamed to 'message'
     # tools go into tools parameter
     # tool_results go into tool_results parameter
-    for message in messages:
+    messages_length = len(messages)
+    for index, message in enumerate(messages):
 
         if "role" in message and message["role"] == "system":
             # System message
@@ -369,34 +388,31 @@ def oai_messages_to_cohere_messages(
             new_message = {
                 "role": "CHATBOT",
                 "message": message["content"],
+                "tool_calls": [{"name": tool_call_.get("function",{}).get("name"), "parameters": eval(tool_call_.get("function",{}).get("arguments"))} for tool_call_ in message["tool_calls"]],
                 # Not including tools in this message, may need to. Testing required.
             }
 
             cohere_messages.append(new_message)
         elif "role" in message and message["role"] == "tool":
-            if "tool_call_id" in message:
-                # Convert the tool call to a result
-
-                tool_call_id = message["tool_call_id"]
-                content_output = message["content"]
+            if not (tool_call_id := message.get("tool_call_id")):
+                continue
 
-                # Find the original tool
-                for tool_call in tool_calls:
-                    if tool_call["id"] == tool_call_id:
+            # Convert the tool call to a result
+            content_output = message["content"]
+            tool_results_chat_turn = extract_to_cohere_tool_results(tool_call_id, content_output, tool_calls)
 
-                        call = {
-                            "name": tool_call["function"]["name"],
-                            "parameters": json.loads(
-                                tool_call["function"]["arguments"]
-                                if not tool_call["function"]["arguments"] == ""
-                                else "{}"
-                            ),
-                        }
-                        output = [{"value": content_output}]
-
-                        tool_results.append(ToolResult(call=call, outputs=output))
+            if (index == messages_length - 1) or (messages[index+1].get("role", "").lower() in ("user", "tool")):
+                # If the tool call is the last message or the next message is a user/tool message, this is a recent tool call. 
+                # So, we pass it into tool_results.
+                tool_results.extend(tool_results_chat_turn)
+                break
+
+            else:
+                # If its not the current tool call, we pass it as a tool message in the chat history.
+                new_message = {"role": "TOOL", "tool_results": tool_results_chat_turn}
+                cohere_messages.append(new_message)
+
 
-                        break
         elif "content" in message and isinstance(message["content"], str):
             # Standard text message
             new_message = {
@@ -405,6 +421,7 @@ def oai_messages_to_cohere_messages(
             }
 
             cohere_messages.append(new_message)
+
 
     # Append any Tool Results
     if len(tool_results) != 0:
@@ -416,7 +433,7 @@ def oai_messages_to_cohere_messages(
         # If we're adding tool_results, like we are, the last message can't be a USER message
         # So, we add a CHATBOT 'continue' message, if so.
         # Changed key from "content" to "message" (jaygdesai/autogen_Jay)
-        if cohere_messages[-1]["role"] == "USER":
+        if cohere_messages[-1]["role"].lower() == "user":
             cohere_messages.append({"role": "CHATBOT", "message": "Please continue."})
 
         # We return a blank message when we have tool results