Fix unmarshalling issues and adjust logging for debugging

Modify `FunctionCall` struct to handle arguments as strings. Add debugging logs to facilitate error tracing and improve JSON unmarshalling in various functions.

openai.go

@@ -64,9 +64,11 @@ func (o openaiImpl) requestToOpenAIRequest(request Request) oai.ChatCompletionRe
 				Name:        tool.Name,
 				Description: tool.Description,
 				Strict:      tool.Strict,
-				Parameters:  tool.Parameters,
+				Parameters:  tool.Parameters.Definition(),
 			},
 		})
+
+		fmt.Println("tool:", tool.Name, tool.Description, tool.Strict, tool.Parameters.Definition())
 	}
 
 	if request.Temperature != nil {
@@ -94,8 +96,9 @@ func (o openaiImpl) responseToLLMResponse(response oai.ChatCompletionResponse) R
 	res := Response{}
 
 	for _, choice := range response.Choices {
-		var tools []ToolCall
+		var toolCalls []ToolCall
 		for _, call := range choice.Message.ToolCalls {
+			fmt.Println("responseToLLMResponse: call:", call.Function.Arguments)
 			toolCall := ToolCall{
 				ID: call.ID,
 				FunctionCall: FunctionCall{
@@ -104,7 +107,9 @@ func (o openaiImpl) responseToLLMResponse(response oai.ChatCompletionResponse) R
 				},
 			}
 
-			tools = append(tools, toolCall)
+			fmt.Println("toolCall.FunctionCall.Arguments:", toolCall.FunctionCall.Arguments)
+
+			toolCalls = append(toolCalls, toolCall)
 
 		}
 		res.Choices = append(res.Choices, ResponseChoice{
@@ -112,6 +117,7 @@ func (o openaiImpl) responseToLLMResponse(response oai.ChatCompletionResponse) R
 			Role:    Role(choice.Message.Role),
 			Name:    choice.Message.Name,
 			Refusal: choice.Message.Refusal,
+			Calls:   toolCalls,
 		})
 	}