import {z} from 'zod'

export type RecordField = {name: string, type?: string | undefined, description?: (string | null) | undefined, allowed_values?: (Array<string> | null) | undefined};

export type ConstraintRequest = {description: string, choices?: (Array<string> | null) | undefined, weights?: (Array<number> | null) | undefined, probability?: (number | null) | undefined};

export type LabelExistingFieldsRequest = {user_id?: (string | null) | undefined, input_fields: Array<RecordField>, output_fields: Array<RecordField>, inputs: Array<{[key: string]: unknown}>, domain_description?: (string | null) | undefined, seed?: (number | null) | undefined, session_id?: (string | null) | undefined, config_num_examples?: number | undefined, temperature?: number | undefined, constraints?: (Array<ConstraintRequest> | null) | undefined, save_dataset?: boolean | undefined, dataset_name?: (string | null) | undefined, project_id?: (string | null) | undefined};

export type CreateApiV1GenerateFieldsLabelExistingArgs = {body: LabelExistingFieldsRequest};

export type CreateApiV1GenerateFieldsLabelExistingOptions = {baseUrl: string, ApiKeyAuth?: string | undefined, fetch?: typeof fetch | undefined};

export const generateResponse = z.object({success: z.boolean(), data: z.array(z.record(z.string(), z.unknown())), count: z.number().int(), task_type: z.string(), token_usage: z.number().int().nullable().optional(), dataset: z.record(z.string(), z.unknown()).nullable().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
};

/**
 * Label Existing Fields
 * 
 * POST /v1/generate/fields/label-existing
 * 
 * Also accepts auth: BearerAuth
 */
export const createApiV1GenerateFieldsLabelExisting = async (args: CreateApiV1GenerateFieldsLabelExistingArgs, options: CreateApiV1GenerateFieldsLabelExistingOptions) => {
const {baseUrl, fetch: fetchFn = fetch, ApiKeyAuth} = options ?? {}

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

if (ApiKeyAuth !== undefined) headers.set("X-API-Key", ApiKeyAuth)

const url = `${baseUrl.replace(/\/+$/, '')}/v1/generate/fields/label-existing${query.size > 0 ? `?${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(generateResponse, await res.json())
};