import {z} from 'zod'

export type GetApiV3EnterpriseHypervisorsArgs = {after?: (string | null) | undefined, first?: number | undefined, status?: ('available' | 'restarting' | 'disconnected' | 'terminated' | 'draining' | 'all') | undefined};

export type GetApiV3EnterpriseHypervisorsOptions = {baseUrl: string, bearerAuth?: string | undefined, fetch?: typeof fetch | undefined};

export const hypervisorResponse = z.object({cloud_provider_instance_id: z.string().nullable(), created_at: z.number().int().nullable(), hypervisor_id: z.string(), last_heartbeat: z.number().int().nullable(), status: z.string(), utilization_percentage: z.number()});

export const paginatedResponseHypervisorResponse = z.object({end_cursor: z.string().nullable().optional(), has_next_page: z.boolean().optional(), items: z.array(hypervisorResponse), total: z.number().int().nullable().optional()});

export const validateResponse = async <Output>(
  schema: {
    readonly '~standard': {
      readonly validate: (value: unknown) => ({ readonly value: Output; readonly issues?: undefined } | { readonly issues: ReadonlyArray<{ readonly message: string; readonly path?: ReadonlyArray<PropertyKey | { readonly key: PropertyKey }> | undefined }> }) | Promise<{ readonly value: Output; readonly issues?: undefined } | { readonly issues: ReadonlyArray<{ readonly message: string; readonly path?: ReadonlyArray<PropertyKey | { readonly key: PropertyKey }> | undefined }> }>
    }
  },
  value: unknown
): Promise<Output> => {
  const result = await schema['~standard'].validate(value)

  if (result.issues !== undefined) {
    const detail = result.issues
      .map(({ message, path }) =>
        path?.length
          ? `${path.map((segment) => String(typeof segment === 'object' ? segment.key : segment)).join('.')}: ${message}`
          : message
      )
      .join('; ')

    throw new Error(`Response does not match the schema: ${detail}`, { cause: { issues: result.issues } })
  }

  return result.value
};

/**
 * List Hypervisors
 * 
 * GET /v3/enterprise/hypervisors
 */
export const getApiV3EnterpriseHypervisors = async (args: GetApiV3EnterpriseHypervisorsArgs, options: GetApiV3EnterpriseHypervisorsOptions) => {
const {baseUrl, fetch: fetchFn = fetch, bearerAuth} = options ?? {}

const query = new URLSearchParams()
const headers = new Headers()
headers.set('accept', "application/json")

if (args.after != null) query.append("after", String(args.after))
if (args.first != null) query.append("first", String(args.first))
if (args.status != null) query.append("status", String(args.status))
if (bearerAuth !== undefined) headers.set('authorization', `Bearer ${bearerAuth}`)

const url = `${baseUrl.replace(/\/+$/, '')}/v3/enterprise/hypervisors${query.size > 0 ? `?${query}` : ''}`

const res = await fetchFn(url, {method: "GET", headers})

if (!res.ok) throw new Error(`Request failed with status ${res.status}`, {cause: {status: res.status, body: await res.text()}})

return validateResponse(paginatedResponseHypervisorResponse, await res.json())
};