Fix log message for empty API response and reorder message appending

Author: mervyn-teo

internal/router/chat.go

@@ -104,13 +104,13 @@ func SendMessage(client *openai.Client, messages *[]ChatCompletionMessage, myBot
 			log.Fatalf("Error creating follow-up chat completion: %v", finalErr)
 		}
 
-		*messages = append(*messages, finalResp.Choices[0].Message)
-
 		if len(finalResp.Choices) == 0 {
-			log.Println("received an empty response from API, trying again")
-			return "", fmt.Errorf("received an empty response from API")
+			log.Println("received an empty response from openRouter, trying again")
+			return "", fmt.Errorf("received an empty response from openRouter")
 		}
 
+		*messages = append(*messages, finalResp.Choices[0].Message)
+
 		choice = finalResp.Choices[0]
 
 		if choice.FinishReason == openai.FinishReasonToolCalls {