Refactor response_audio function for improved logging and error handling

app.py

@@ -99,21 +99,24 @@ def response_text(message_id, chat_id, prompt):
         send_message(message_id, chat_id, "There was an error processing your request.")
 
 def response_audio(message_id, chat_id, prompt):
-    logging.debug(f"Entering response_audio with prompt: {prompt}")
+    logging.debug("Entering response_audio with prompt: %s", prompt)
     try:
         result = generate_voice_reply(prompt, model="openai-audio", voice="coral", audio_dir=audio_dir)
-        logging.debug(f"Result from generate_voice_reply: {result}")
-        if result:
+        logging.debug("Result from generate_voice_reply: %s", result)
+        # Check result and also ensure the audio_file_path is not None or empty
+        if result and result[0]:
             audio_file_path, audio_data = result
-            logging.debug(f"Audio file path generated: {audio_file_path}")
+            logging.debug("Audio file path generated: %s", audio_file_path)
             send_result = send_audio(message_id, chat_id, audio_file_path)
-            logging.debug(f"Result from send_audio: {send_result}")
-            os.remove(audio_file_path)  # Clean up the file after sending
-            logging.debug(f"Removed audio file: {audio_file_path}")
+            logging.debug("Result from send_audio: %s", send_result)
+            if os.path.exists(audio_file_path):
+                os.remove(audio_file_path)  # Clean up the file after sending
+                logging.debug("Removed audio file: %s", audio_file_path)
         else:
-            logging.debug("generate_voice_reply returned None, falling back to response_text")
+            logging.debug("generate_voice_reply returned None or empty audio file path, falling back to response_text")
+            response_text(message_id, chat_id, prompt)
     except Exception as e:
-        logging.debug(f"Exception in response_audio: {e}")
+        logging.debug("Exception in response_audio: %s", e)
         send_message(message_id, chat_id, "There was an error generating the audio. Please try again later.")
 
 def handle_image_generation(message_id, chat_id, prompt):
@@ -166,7 +169,7 @@ async def whatsapp_webhook(request: Request):
             send_message(message_id, chat_id, "Generating...")
             threading.Thread(target=handle_image_generation, args=(message_id, chat_id, prompt)).start()
     else:
-        threading.Thread(target=response_text, args=(message_id, chat_id, body)).start()
+        threading.Thread(target=response_audio, args=(message_id, chat_id, body)).start()
     return {"success": True}
 
 def main():