Update app.py

app.py

@@ -1,37 +1,40 @@
-from fastapi import FastAPI
-from pydantic import BaseModel
+APP.PY sahi UI wala 
+import gradio as gr
 from huggingface_hub import InferenceClient
 import os
 
-# Hugging Face token (set in Secrets)
 HF_TOKEN = os.getenv("HF_TOKEN")
-client = InferenceClient(token=HF_TOKEN, model="openai/gpt-oss-20b")
 
-app = FastAPI()
+def respond(message, history: list[dict[str, str]]):
+    client = InferenceClient(token=HF_TOKEN, model="openai/gpt-oss-20b")
 
-# Input schema
-class ChatRequest(BaseModel):
-    message: str
-    history: list = []
-
-@app.post("/chat")
-def chat(req: ChatRequest):
-    messages = [{"role": "system", "content": "You are a helpful AI assistant."}]
-    
-    for h in req.history:
-        messages.append({"role": "user", "content": h[0]})
-        messages.append({"role": "assistant", "content": h[1]})
-    
-    messages.append({"role": "user", "content": req.message})
+    messages = [{"role": "system", "content": "You are a friendly chatbot."}]
+    messages.extend(history)
+    messages.append({"role": "user", "content": message})
 
     response = ""
     for msg in client.chat_completion(
         messages,
-        max_tokens=200,
+        max_tokens=512,
         stream=True,
-        temperature=0.7
+        temperature=0.7,
+        top_p=0.95
     ):
         if msg.choices and msg.choices[0].delta.content:
             response += msg.choices[0].delta.content
+        yield response
+
+
+# Purple + White/Grey Theme CSS
+custom_css = """
+.gradio-container {
+    background: linear-gradient(to bottom right, #7E498B, #f5f5f5);
+    font-family: 'Segoe UI', sans-serif;
+}
+"""
+
+with gr.Blocks(theme=gr.themes.Soft(), css=custom_css) as demo:
+    gr.ChatInterface(respond, type="messages")   
 
-    return {"reply": response}
+if __name__ == "__main__":
+    demo.launch(share=True)