import {z} from 'zod'

export type GetApiDiV2PipelineModelpredictNodeManifestOptions = {baseUrl?: string | undefined, basicAuthToken?: string | undefined, fetch?: typeof fetch | undefined};

export const metaData = z.object({name: z.string().optional(), namespace: z.string().optional(), description: z.string().optional(), exp_id: z.string().optional(), exp_name: z.string().optional()});

export const dataConfig = z.object({source_type: z.literal("MLSSPlatformStorage").optional(), mlss_platform_parent_dir: z.string().optional(), mlss_platform_sub_dir: z.string().optional(), mapping_path: z.string().optional()});

export const modelInput = z.object({source_type: z.enum(["Direct", "Variable"]).optional(), variable_key: z.string().optional(), group_id: z.string().optional(), model_id: z.string().optional(), model_version_id: z.number().optional()});

export const modelPredictNodeInput = z.object({data: dataConfig.optional(), model: modelInput.optional()});

export const output = z.object({result: dataConfig.optional()});

export const runEnvironment = z.object({image_name: z.string().optional(), image_version: z.string().optional(), entry_point: z.string().optional(), code_path: z.string().optional()});

export const computeResource = z.object({nums: z.number().optional(), cpus: z.number().optional(), memory: z.string().optional(), gpus: z.number().optional()});

export const modelPredictNodeManifest = z.object({meta_data: metaData.optional(), input: modelPredictNodeInput.optional(), output: output.optional(), run_environment: runEnvironment.optional(), compute_resources: z.object({worker: computeResource.optional()}).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
};

/**
 * GetPipelineModelPredictNodeManifest
 * 
 * GET /di/v2/pipeline/modelpredict_node_manifest
 * 
 * Also accepts auth: watsonAuthToken, watsonAuthTokenQuery
 */
export const getApiDiV2PipelineModelpredictNodeManifest = async (options?: GetApiDiV2PipelineModelpredictNodeManifestOptions) => {
const {baseUrl = "https://di.prophecis.com", fetch: fetchFn = fetch, basicAuthToken} = options ?? {}

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

if (basicAuthToken !== undefined) headers.set("Authorization", basicAuthToken)

const url = `${baseUrl.replace(/\/+$/, '')}/di/v2/pipeline/modelpredict_node_manifest${query.size > 0 ? `?${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(modelPredictNodeManifest, await res.json())
};