import k8s from "@kubernetes/client-node";
import { ERR } from "../util/logging.js";
import { getServerAssets } from "./k8s-server-control.js";
import ExpressClientError from "../util/ExpressClientError.js";
const kc = new k8s.KubeConfig();
kc.loadFromDefault();

const k8sDeps = kc.makeApiClient(k8s.AppsV1Api);
const k8sCore = kc.makeApiClient(k8s.CoreV1Api);
const namespace = process.env.MCL_SERVER_NAMESPACE;

const deleteError = (err) => {
  ERR("K8S", "An error occurred while deleting a resource", err);
  throw new ExpressClientError({
    c: 500,
    m: "Error deleting a resource!\n" + err,
  });
};

function deleteOnExist(o, fn) {
  if (o) return fn(o.metadata.name);
}

export default async function deleteServerResources(serverSpec) {
  const { id } = serverSpec;
  // Ensure deployment exists
  const server = await getServerAssets(id);
  if (!server)
    throw new ExpressClientError({
      c: 404,
      m: "No Resources for that server were found!",
    });

  // Delete in reverse order
  const deleteDeploy = deleteOnExist(server.deployment, (name) =>
    k8sDeps.deleteNamespacedDeployment(name, namespace),
  );

  const deleteService = deleteOnExist(server.service, (name) =>
    k8sCore.deleteNamespacedService(name, namespace),
  );
  const deleteRconService = deleteOnExist(server.rconService, (name) =>
    k8sCore.deleteNamespacedService(name, namespace),
  );
  if (deleteDeploy) await deleteDeploy.catch(deleteError);

  const deleteRconSecret = deleteOnExist(server.rconSecret, (name) =>
    k8sCore.deleteNamespacedSecret(name, namespace),
  );

  const deleteBackupSecret = deleteOnExist(server.backupSecret, (name) =>
    k8sCore.deleteNamespacedSecret(name, namespace),
  );

  const deleteExtraService = deleteOnExist(server.extraService, (name) =>
    k8sCore.deleteNamespacedService(name, namespace),
  );
  const deleteVolume = deleteOnExist(server.volume, (name) =>
    k8sCore.deleteNamespacedPersistentVolumeClaim(name, namespace),
  );

  return Promise.all([
    deleteService,
    deleteRconService,
    deleteRconSecret,
    deleteExtraService,
    deleteBackupSecret,
    deleteVolume,
  ]).catch(deleteError);
}