import {z} from 'zod'

export type PublicTranslateTargetsDto = {languages: Array<string>, sample_rate: number};

export type PublicCountryLanguagePairDto = {country: string, language: string};

export type PublicLocalizeTargetsDto = {pairs: Array<PublicCountryLanguagePairDto>, sample_rate: number};

export type PublicLanguageExpansionSpecDto = {type: 'translate' | 'localize', languages?: Array<string> | undefined, pairs?: Array<PublicCountryLanguagePairDto> | undefined, sample_rate: number};

export type CreateInventedDatasetDto = {name?: string | undefined, training_type?: ('instruction_dataset' | 'preference_pairs') | undefined, domains?: Array<string> | undefined, subdomains?: Array<string> | undefined, rows: number, translate?: PublicTranslateTargetsDto | undefined, localize?: PublicLocalizeTargetsDto | undefined, language_expansion?: (PublicLanguageExpansionSpecDto | null) | undefined, dataset_prompt?: string | undefined, prompt?: string | undefined, estimate?: boolean | undefined, idempotency_key?: string | undefined};

export type CreateApiApiV1DatasetsInventArgs = {body: CreateInventedDatasetDto};

export type CreateApiApiV1DatasetsInventOptions = {baseUrl: string, bearer?: string | undefined, fetch?: typeof fetch | undefined};

export const publicInventedDatasetDto = z.object({estimate: z.boolean(), id: z.string().nullable(), name: z.string(), training_type: z.enum(["instruction_dataset", "preference_pairs"]), domains: z.array(z.string()), subdomains: z.array(z.string()), rows: z.number().int().nullable(), status: z.enum(["pending", "running", "awaiting_input", "succeeded", "failed"]).nullable(), created_at: z.string().nullable(), estimated_credits: z.number(), available_credits: z.number()});

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
};

/**
 * Generate a dataset from scratch
 * 
 * POST /api/v1/datasets/invent
 */
export const createApiApiV1DatasetsInvent = async (args: CreateApiApiV1DatasetsInventArgs, options: CreateApiApiV1DatasetsInventOptions) => {
const {baseUrl, fetch: fetchFn = fetch, bearer} = options ?? {}

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

if (bearer !== undefined) headers.set('authorization', `Bearer ${bearer}`)

const url = `${baseUrl.replace(/\/+$/, '')}/api/v1/datasets/invent${query.size > 0 ? `?${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(publicInventedDatasetDto, await res.json())
};