import {z} from 'zod'

export type GetApiV1AppsAppsIdServicesServicesIdVersionsVersionsIdInstancesArgs = {appsId: string, servicesId: string, versionsId: string, pageSize?: number | undefined, pageToken?: string | undefined};

export type GetApiV1AppsAppsIdServicesServicesIdVersionsVersionsIdInstancesOptions = {baseUrl?: string | undefined, Oauth2?: string | undefined, Oauth2c?: string | undefined, fetch?: typeof fetch | undefined};

export const instance = z.object({appEngineRelease: z.string().optional(), availability: z.enum(["UNSPECIFIED", "RESIDENT", "DYNAMIC"]).optional(), averageLatency: z.number().int().optional(), errors: z.number().int().optional(), id: z.string().optional(), memoryUsage: z.string().optional(), name: z.string().optional(), qps: z.number().optional(), requests: z.number().int().optional(), startTime: z.string().optional(), vmDebugEnabled: z.boolean().optional(), vmId: z.string().optional(), vmIp: z.string().optional(), vmLiveness: z.enum(["LIVENESS_STATE_UNSPECIFIED", "UNKNOWN", "HEALTHY", "UNHEALTHY", "DRAINING", "TIMEOUT"]).optional(), vmName: z.string().optional(), vmStatus: z.string().optional(), vmZoneName: z.string().optional()});

export const listInstancesResponse = z.object({instances: z.array(instance).optional(), nextPageToken: z.string().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
};

/**
 * Lists the instances of a version.Tip: To aggregate details about instances over time, see the Stackdriver Monitoring API (https://cloud.google.com/monitoring/api/ref_v3/rest/v3/projects.timeSeries/list).
 * 
 * GET /v1/apps/{appsId}/services/{servicesId}/versions/{versionsId}/instances
 * 
 * Also accepts auth: Oauth2 + Oauth2c, Oauth2 + Oauth2c
 */
export const getApiV1AppsAppsIdServicesServicesIdVersionsVersionsIdInstances = async (args: GetApiV1AppsAppsIdServicesServicesIdVersionsVersionsIdInstancesArgs, options?: GetApiV1AppsAppsIdServicesServicesIdVersionsVersionsIdInstancesOptions) => {
const {baseUrl = "https://appengine.googleapis.com", fetch: fetchFn = fetch, Oauth2, Oauth2c} = options ?? {}

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

if (args.pageSize != null) query.append("pageSize", String(args.pageSize))
if (args.pageToken != null) query.append("pageToken", String(args.pageToken))
if (Oauth2 !== undefined) headers.set('authorization', `Bearer ${Oauth2}`)
if (Oauth2c !== undefined) headers.set('authorization', `Bearer ${Oauth2c}`)

const url = `${baseUrl.replace(/\/+$/, '')}/v1/apps/${encodeURIComponent(String(args.appsId))}/services/${encodeURIComponent(String(args.servicesId))}/versions/${encodeURIComponent(String(args.versionsId))}/instances${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(listInstancesResponse, await res.json())
};