Create app.py

app.py

@@ -0,0 +1,28 @@
+import os
+import gradio as gr
+from helper import generate_reply
+
+OPENAI_KEY = os.getenv("OPENAI_API_KEY")
+if not OPENAI_KEY:
+    raise ValueError("🔑 Set OPENAI_API_KEY in your Space’s Secrets.")
+
+def respond(user_message, history):
+    bot_message = generate_reply(user_message)
+    history = history or []
+    history.append((user_message, bot_message))
+    return history, ""
+
+with gr.Blocks(css="""
+    body { background-color: #f5f5f5; }
+    .gradio-container { max-width: 700px; margin: auto; padding: 1rem; }
+""") as demo:
+    gr.Markdown("## 🤖 Your AI Companion")
+    chatbot = gr.Chatbot()
+    with gr.Row():
+        txt = gr.Textbox(placeholder="Type here…", show_label=False, lines=1)
+        send = gr.Button("Send")
+    txt.submit(respond, [txt, chatbot], [chatbot, txt])
+    send.click(respond, [txt, chatbot], [chatbot, txt])
+
+if __name__ == "__main__":
+    demo.launch()