from fastapi import APIRouter
from app.k8s_client import get_core_client

router = APIRouter(prefix="/nodes", tags=["nodes"])


@router.get("/")
def list_node():
    v1 = get_core_client()
    nodes = v1.list_node().items
    result = []
    for n in nodes:
        conditions = {c.type: c.status for c in n.status.conditions}
        result.append(
            {
                "name": n.metadata.name,
                "ready": conditions.get("Ready") == "True",
                "cpu_capacity": n.status.capacity.get("cpu"),
                "memory_capacity": n.status.capacity.get("memory"),
                "labels": n.metadata.labels,
                "age_days": _age(n.metadata.creation_timestamp),
            }
        )
    return result


def _age(ts) -> int:
    from datetime import datetime, timezone

    now = datetime.now(timezone.utc)
    return (now - ts).days