import os
import logging
import pytz
from datetime import datetime, timedelta
from dotenv import load_dotenv
from apscheduler.schedulers.asyncio import AsyncIOScheduler
from apscheduler.jobstores.sqlalchemy import SQLAlchemyJobStore
from apscheduler.triggers.cron import CronTrigger
from sqlalchemy import delete
from app.core.database import sync_engine, async_session
from app.models.event_log import EventLog
from app.drivers.wiz import WizDriver

load_dotenv()
logger = logging.getLogger(__name__)

TZ_NAME = os.getenv("APP_TIMEZONE", "Asia/Novosibirsk")
app_tz = pytz.timezone(TZ_NAME)

RETENTION_DAYS = int(os.getenv("EVENT_LOG_RETENTION_DAYS", "30"))

jobstores = {"default": SQLAlchemyJobStore(engine=sync_engine)}
scheduler = AsyncIOScheduler(jobstores=jobstores, timezone=app_tz)


async def execute_lamp_command(ip: str, params: dict):
    """
    Универсальное выполнение команды.
    params может содержать: state, dimming, temp, sceneId, r, g, b
    """
    driver = WizDriver()
    await driver.set_pilot(ip, params)
    logger.info(f"Сработало расписание для {ip}: {params}")


async def cleanup_old_events():
    """Удаляет записи event_log старше RETENTION_DAYS."""
    cutoff = (datetime.now() - timedelta(days=RETENTION_DAYS)).isoformat()
    async with async_session() as session:
        result = await session.execute(
            delete(EventLog).where(EventLog.timestamp < cutoff)
        )
        await session.commit()
        if result.rowcount:
            logger.info(
                f"Очистка лога: удалено {result.rowcount} записей старше {RETENTION_DAYS} дней"
            )


async def start_scheduler():
    if not scheduler.running:
        scheduler.start()

        # Очистка лога -- раз в сутки в 03:00
        scheduler.add_job(
            cleanup_old_events,
            CronTrigger(hour=3, minute=0, timezone=app_tz),
            id="cleanup_event_log",
            name="Очистка старых событий",
            replace_existing=True,
        )

        logger.info(f"Планировщик запущен. Таймзона: {TZ_NAME}")