# api.py
from fastapi import FastAPI, UploadFile, File, Form
from model import load_vectorstore, ask_question
import shutil

app = FastAPI()

@app.post("/upload")
async def upload(file: UploadFile = File(...)):
    with open("document.pdf", "wb") as buffer:
        shutil.copyfileobj(file.file, buffer)
    load_vectorstore("document.pdf")
    return {"message": "File indexed successfully."}

@app.post("/ask")
async def ask(question: str = Form(...)):
    answer = ask_question(question)
    return {"question": question, "answer": answer}