import asyncio
import logging
import os

import requests

from utils.rate_limiter import cat_limiter

logger = logging.getLogger(__name__)

CAT_API_URL = "https://api.thecatapi.com/v1/images/search"
_cat_api_key: str | None = os.getenv("CAT_API_KEY")

_session = requests.Session()


async def fetch_cat() -> str | None:
    """Получить URL случайного котика. Вернуть None при ошибке."""
    await cat_limiter.acquire()
    headers: dict[str, str] | None = None
    if _cat_api_key:
        headers = {"x-api-key": _cat_api_key}
    try:
        response = await asyncio.to_thread(
            _session.get, CAT_API_URL, timeout=10, headers=headers
        )
        response.raise_for_status()
        data = response.json()
        return data[0]["url"]
    except (requests.exceptions.RequestException, IndexError, KeyError) as e:
        logger.error("Ошибка при получении котика: %s", e)
        return None