from __future__ import annotations

import asyncio
import shutil
import time
from pathlib import Path

import structlog

from app.core.config import settings

logger = structlog.get_logger(__name__)


async def cleanup_loop() -> None:
    output_dir = Path(settings.OUTPUT_DIR)
    while True:
        await asyncio.sleep(600)
        await _sweep(output_dir)


async def _sweep(output_dir: Path) -> None:
    if not output_dir.exists():
        return

    now = time.time()
    removed = 0

    for job_dir in output_dir.iterdir():
        if not job_dir.is_dir():
            continue
        if now - job_dir.stat().st_mtime > settings.OUTPUT_TTL_SECONDS:
            try:
                shutil.rmtree(job_dir)
                removed += 1
            except Exception:
                logger.exception("cleanup_error", path=str(job_dir))

    if removed:
        logger.info("cleanup_complete", removed_jobs=removed)