import asyncio
import logging
from typing import Dict, Any

logger = logging.getLogger(__name__)


class PrefetchManager:
    """Lightweight async prefetch queue runner."""

    def __init__(self):
        self._prefetch_queue: asyncio.Queue = asyncio.Queue()
        self._running = False

    async def start_prefetch_worker(self):
        self._running = True
        while self._running:
            try:
                prefetch_task = await asyncio.wait_for(self._prefetch_queue.get(), timeout=1.0)
                await self._execute_prefetch(prefetch_task)
            except asyncio.TimeoutError:
                continue
            except Exception as e:
                logger.error(f"Prefetch error: {e}")

    def stop_prefetch_worker(self):
        self._running = False

    async def _execute_prefetch(self, task: Dict[str, Any]):
        logger.debug(f"Executing prefetch task: {task}")


__all__ = [
    "PrefetchManager",
]


