import {z} from 'zod'

export type GetApiV1ParentEnginesArgs = {parent: string, pageSize?: number | undefined, pageToken?: string | undefined, orderBy?: string | undefined, filter?: string | undefined};

export type GetApiV1ParentEnginesOptions = {baseUrl: string, fetch?: typeof fetch | undefined};

export const v1EngineType = z.enum(["TYPE_UNSPECIFIED", "TYPE_DRIVERLESS_AI", "TYPE_H2O", "TYPE_NOTEBOOK"]);

export const v1EngineState = z.enum(["STATE_UNSPECIFIED", "STATE_STARTING", "STATE_RUNNING", "STATE_PAUSING", "STATE_PAUSED", "STATE_FAILED", "STATE_DELETING", "STATE_CONNECTING", "STATE_TERMINATING", "STATE_TERMINATED"]);

export const v1Engine = z.object({name: z.string().optional(), uid: z.string().optional(), creator: z.string().optional(), creatorDisplayName: z.string().optional(), type: v1EngineType.optional(), profile: z.string().optional(), state: v1EngineState.optional(), reconciling: z.boolean().optional(), storageResizing: z.boolean().optional(), totalDiskSizeBytes: z.string().nullable().optional(), freeDiskSizeBytes: z.string().nullable().optional(), createTime: z.string().optional(), deleteTime: z.string().nullable().optional(), updateTime: z.string().nullable().optional(), resumeTime: z.string().nullable().optional(), loginUrl: z.string().optional(), annotations: z.record(z.string(), z.string()).optional(), displayName: z.string().optional(), version: z.string().optional(), deprecatedVersion: z.boolean().optional(), deletedVersion: z.boolean().optional(), cpu: z.number().int().optional(), gpu: z.number().int().optional(), memoryBytes: z.string().optional(), storageBytes: z.string().optional(), upgradeAvailable: z.boolean().optional(), maxIdleDuration: z.string().nullable().optional(), maxRunningDuration: z.string().nullable().optional(), currentIdleDuration: z.string().nullable().optional(), currentRunningDuration: z.string().nullable().optional(), visitable: z.boolean().optional()});

export const v1ListEnginesResponse = z.object({engines: z.array(v1Engine).optional(), nextPageToken: z.string().optional(), totalSize: z.number().int().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
};

/**
 * Returns a collection of Engines within a workspace.
 * 
 * GET /v1/{parent}/engines
 */
export const getApiV1ParentEngines = async (args: GetApiV1ParentEnginesArgs, options: GetApiV1ParentEnginesOptions) => {
const {baseUrl, fetch: fetchFn = fetch} = 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 (args.orderBy != null) query.append("orderBy", String(args.orderBy))
if (args.filter != null) query.append("filter", String(args.filter))

const url = `${baseUrl.replace(/\/+$/, '')}/v1/${encodeURIComponent(String(args.parent))}/engines${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(v1ListEnginesResponse, await res.json())
};