import {z} from 'zod'

export type GlobalVariable = {key?: string | undefined, type?: ('string' | 'number' | 'model' | 'processline') | undefined, value?: Record<string, never> | undefined};

export type WTSSVariables = {run_date?: string | undefined, run_date_std?: string | undefined, run_mon?: string | undefined, run_mon_end?: string | undefined, run_mon_end_std?: string | undefined};

export type RunConfig = {global_variables?: Array<GlobalVariable> | undefined, wtss_variables?: WTSSVariables | undefined};

export type CreateExperimentRunRequest = {exp_id?: string | undefined, exp_version_name?: string | undefined, run_config?: RunConfig | undefined};

export type CreateApiDiV2ExperimentRunArgs = {body: CreateExperimentRunRequest};

export type CreateApiDiV2ExperimentRunOptions = {baseUrl?: string | undefined, basicAuthToken?: string | undefined, fetch?: typeof fetch | undefined};

export const createExperimentRunResponse = z.object({exp_run_id: z.string().optional(), exp_id: z.string().optional(), exp_version_name: z.string().optional(), create_user: z.string().optional(), create_time: z.string().optional(), end_time: 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
};

/**
 * CreateExperimentRun
 * 
 * POST /di/v2/experiment_run
 * 
 * Also accepts auth: watsonAuthToken, watsonAuthTokenQuery
 */
export const createApiDiV2ExperimentRun = async (args: CreateApiDiV2ExperimentRunArgs, options?: CreateApiDiV2ExperimentRunOptions) => {
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/v2/experiment_run${query.size > 0 ? `?${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(createExperimentRunResponse, await res.json())
};