import asyncio
import logging
from app.engine import run_checks
from app.store import update

logger = logging.getLogger("health-agent")

async def run_service(service_cfg):
    interval = service_cfg.get("interval", 30)
    service_name = service_cfg.get("service", "unknown")

    while True:
        try:
            healthy, checks = await run_checks(service_cfg)

            # 🔹 Health result (PASS / FAIL) → dữ liệu hợp lệ
            update(
                service_name,
                {
                    "status": "HEALTHY" if healthy else "UNHEALTHY",
                    "checks": checks,
                }
            )

            if not healthy:
                logger.warning(
                    "Service %s is UNHEALTHY", service_name
                )

        except asyncio.CancelledError:
            # 🔹 App shutdown → task bị cancel
            logger.info(
                "Health check task stopped for service %s",
                service_name
            )
            raise

        except Exception as e:
            # ❗ BUG của agent / engine (KHÔNG phải health fail)
            update(
                service_name,
                {
                    "status": "UNHEALTHY",
                    "checks": [],
                    "error": str(e),
                }
            )

            logger.error(
                "Agent error while checking service %s: %s",
                service_name,
                e,
                exc_info=True,  # stacktrace chỉ dùng cho BUG
            )

        await asyncio.sleep(interval)