import {z} from 'zod'

export type ProphecisExperimentTagPutBasicInfo = {exp_id?: number | undefined, exp_tag?: string | undefined};

export type DSSInfo = {flow_name?: string | undefined, flow_version?: string | undefined, flow_id?: number | undefined, project_name?: string | undefined, project_id?: number | undefined};

export type ProphecisExperimentRequest = {exp_id?: number | undefined, exp_name: string, group_name?: string | undefined, exp_desc: string, create_type?: string | undefined, tag_list?: Array<ProphecisExperimentTagPutBasicInfo> | undefined, dss_info?: DSSInfo | undefined};

export type CreateApiDiV1ExperimentArgs = {body: ProphecisExperimentRequest};

export type CreateApiDiV1ExperimentOptions = {baseUrl?: string | undefined, basicAuthToken?: string | undefined, fetch?: typeof fetch | undefined};

export const prophecisExperimentIDResponse = z.object({id: z.number(), exp_name: 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
};

/**
 * createExperiment
 * 
 * POST /di/v1/experiment
 * 
 * Also accepts auth: watsonAuthToken, watsonAuthTokenQuery
 */
export const createApiDiV1Experiment = async (args: CreateApiDiV1ExperimentArgs, options?: CreateApiDiV1ExperimentOptions) => {
const {baseUrl = "https://di.prophecis.com", fetch: fetchFn = fetch, basicAuthToken} = options ?? {}

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

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

const url = `${baseUrl.replace(/\/+$/, '')}/di/v1/experiment${query.size > 0 ? `?${query}` : ''}`

const res = await fetchFn(url, {method: "POST", headers, body: JSON.stringify(args.body)})

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

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