Update app.py

app.py

@@ -1,6 +1,24 @@
 import gradio as gr
+from transformers import AutoModelForCausalLM, AutoTokenizer
+import torch
+
+model_name = "microsoft/DialoGPT-medium"
+
+tokenizer = AutoTokenizer.from_pretrained(model_name)
+model = AutoModelForCausalLM.from_pretrained(model_name)
 
 def chat(message, history):
-    return f"Queen: {message}"
+    if not message:
+        return ""
+    
+    new_user_input_ids = tokenizer.encode(message + tokenizer.eos_token, return_tensors='pt')
+    
+    bot_input_ids = new_user_input_ids
+    
+    chat_history_ids = model.generate(bot_input_ids, max_length=200, pad_token_id=tokenizer.eos_token_id)
+    
+    response = tokenizer.decode(chat_history_ids[:, bot_input_ids.shape[-1]:][0], skip_special_tokens=True)
+    
+    return response
 
 gr.ChatInterface(fn=chat).launch()