import asyncio
import random
from fastapi import APIRouter, status
from starlette.responses import JSONResponse

from app.schema import Response

router = APIRouter()

@router.get('/demo', status_code=status.HTTP_200_OK, response_model=Response)
async def demo() -> JSONResponse:
    """
    Demo API endpoint that randomly sleeps for 0-500ms before responding.
    """
    # Random sleep between 0 and 500ms
    sleep_time = random.uniform(0, 0.5)
    await asyncio.sleep(sleep_time)
    
    return JSONResponse(
        status_code=status.HTTP_200_OK,
        content={
            'code': status.HTTP_200_OK,
            'msg': 'ok',
            'payload': {
                'sleep_time_ms': round(sleep_time * 1000, 2)
            }
        }
    )