import os
import subprocess

from fastapi import APIRouter
from common import _podman_get_json as _common_podman_get_json


def init_system_router(session, podman_api_base: str, workloads_dir: 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},
        }

    @router.get("/test-hybrid")
    def test_hybrid():
        # 1. Check filesystem
        try:
            bestanden = []
            for root, _, files in os.walk(workloads_dir):
                for f in files:
                    bestanden.append(os.path.join(root, f))
        except Exception as e:
            bestanden = f"FS Fout: {str(e)}"

        # 2. Check Podman API
        try:
            api_containers = _common_podman_get_json(session, f"{podman_api_base}/libpod/containers/json?all=true")
        except Exception as e:
            api_containers = f"API Fout: {str(e)}"

        return {
            "bestanden_gevonden": bestanden if isinstance(bestanden, list) else [],
            "api_containers_aantal": len(api_containers) if isinstance(api_containers, list) else -1,
            "api_raw_sample": api_containers[0] if isinstance(api_containers, list) and api_containers else api_containers,
        }

    return router