/**
 * Shared Proxmox-service resolution for the `celilo proxmox …` command tree
 * (node list, vm/ct list|show|resize). Resolves an explicit service-id arg, else
 * the sole Proxmox service; errors when ambiguous or unknown.
 */

import type { listContainerServices } from '../../services/container-service';

type Services = Awaited<ReturnType<typeof listContainerServices>>;

export function resolveProxmoxService(
  services: Services,
  requested: string | undefined,
): { service: Services[number] } | { error: string } {
  const proxmox = services.filter((s) => s.providerName === 'proxmox');
  if (proxmox.length === 0) {
    return {
      error: 'No Proxmox container service configured. Add one: celilo service add proxmox',
    };
  }
  if (requested) {
    const match = proxmox.find((s) => s.serviceId === requested);
    if (!match) {
      return {
        error: `No Proxmox service '${requested}'. Known: ${proxmox.map((s) => s.serviceId).join(', ')}`,
      };
    }
    return { service: match };
  }
  if (proxmox.length > 1) {
    return {
      error: `Multiple Proxmox services — specify one with <service-id>:\n  ${proxmox
        .map((s) => s.serviceId)
        .join('\n  ')}`,
    };
  }
  return { service: proxmox[0] };
}