# from fastapi import FastAPI

# app = FastAPI()

# @app.get("/")
# def greet_json():
#     return {"Hello": "World!"}

from fastapi import FastAPI, HTTPException
from pydantic import BaseModel
from transformers import AutoTokenizer, AutoModelForSequenceClassification, pipeline
import torch

app = FastAPI()

# Check if CUDA is available
if torch.cuda.is_available():
    device = torch.device("cuda:0")
else:
    device = torch.device("cpu")

# Define the request model
class URLRequest(BaseModel):
    url: str

# Load the tokenizer and model using pipeline
pipe = pipeline("text-classification", model="kmack/malicious-url-detection", device=device.index if torch.cuda.is_available() else -1)

# Define the prediction function
def get_prediction(url_to_check: str):
    result = pipe(url_to_check)
    return result

# Define the API endpoint for URL prediction
@app.post("/predict")
async def predict(url_request: URLRequest):
    url_to_check = url_request.url
    result = get_prediction(url_to_check)
    return {"prediction": result}

# Health check endpoint
@app.get("/")
async def read_root():
    return {"message": "API is up and running"}