import subprocess

from fastapi import APIRouter


def init_system_router(session, podman_api_base: str) -> APIRouter:
    router = APIRouter(tags=["system"])

    @router.get("/health")
    def health():
        podman_ok = False
        try:
            r = session.get(f"{podman_api_base}/libpod/info", timeout=2)
            if r.status_code == 200:
                try:
                    r.json()
                    podman_ok = True
                except Exception:
                    podman_ok = False
        except Exception:
            podman_ok = False

        systemd_reachable = False
        try:
            res = subprocess.run(
                ["systemctl", "--user", "list-units", "--no-pager", "--no-legend"],
                capture_output=True,
                text=True,
                check=False,
                timeout=2,
            )
            systemd_reachable = (res.returncode == 0)
        except Exception:
            systemd_reachable = False

        ok = podman_ok and systemd_reachable
        return {
            "ok": ok,
            "podman": {"ok": podman_ok},
            "systemd_user": {"reachable": systemd_reachable},
        }

    return router