Add application file

app.py

@@ -1,32 +1,7 @@
-import gradio as gr
+from fastapi import FastAPI
 
-from app.deps import get_chain
+app = FastAPI()
 
-def chat_fn(message, history):
-    """
-    history comes as: [(user_msg, bot_msg), ...]
-    We'll convert it to your chain's expected format:
-    [{"role":"user","content":...}, {"role":"assistant","content":...}, ...]
-    """
-    history_dicts = []
-    for u, a in history:
-        if u:
-            history_dicts.append({"role": "user", "content": u})
-        if a:
-            history_dicts.append({"role": "assistant", "content": a})
-
-    chain = get_chain(conversation_history=history_dicts)
-
-    # Your chain.invoke is sync
-    result = chain.invoke(message)
-    answer = result.get("answer", "") if isinstance(result, dict) else str(result)
-    return answer
-
-demo = gr.ChatInterface(
-    fn=chat_fn,
-    title="Legal RAG Chatbot",
-    description="Ask questions and get answers with retrieved context."
-)
-
-if __name__ == "__main__":
-    demo.launch()
+@app.get("/")
+def greet_json():
+    return {"Hello": "World!"}