"""백그라운드 스케줄러(크론) 패키지 — '언제'(when) 담당."""
import os

from apscheduler.schedulers.asyncio import AsyncIOScheduler

from common.logger import LOG

__all__ = ["start_scheduler", "shutdown_scheduler"]

_scheduler = None  # AsyncIOScheduler | None


def _is_enabled() -> bool:
    return os.environ.get("SCHEDULER_ENABLED", "0") == "1"


def start_scheduler():
    """lifespan startup 에서 호출."""
    global _scheduler
    if not _is_enabled():
        LOG.i("[scheduler] disabled (SCHEDULER_ENABLED != 1)")
        return
    if _scheduler is not None:
        return

    # 한국시간 기준.
    _scheduler = AsyncIOScheduler(timezone="Asia/Seoul")
    # 1분이 아니라 5분이다.
    from scheduler.jobs import sweep_social_posts
    _scheduler.add_job(sweep_social_posts, 'interval', minutes=5, max_instances=1, coalesce=True)
    if os.environ.get("GSC_ENABLED") == "1":
        from services.search_console_service import run_scheduled_check
        _scheduler.add_job(run_scheduled_check, "interval", minutes=10,
                           id="search-console", max_instances=1, coalesce=True)

    from scheduler.jobs import sweep_alert_outbox, sweep_blog_mail, sweep_queue_health
    _scheduler.add_job(sweep_alert_outbox, "interval", minutes=1,
                       id="alert-outbox", max_instances=1, coalesce=True)
    _scheduler.add_job(sweep_queue_health, "interval", minutes=5,
                       id="queue-health", max_instances=1, coalesce=True)
    # 미니 블로그 — 새벽에 재고를 채우고, 아침에 검수 통과분을 보낸다(docs/MINI_BLOG.md).
    _scheduler.add_job(sweep_blog_mail, "cron", hour=9, minute=0,
                       id="blog-mail", max_instances=1, coalesce=True)
    _scheduler.start()
    LOG.i("[scheduler] started (KST: SNS 승인 만료·중단 복구)")
    LOG.i(f"[scheduler] started (KST: {len(_scheduler.get_jobs())}개 잡)")


def shutdown_scheduler():
    """lifespan shutdown 에서 호출."""
    global _scheduler
    if _scheduler is not None:
        _scheduler.shutdown(wait=False)
        _scheduler = None
        LOG.i("[scheduler] stopped")