import {z} from 'zod'

export type DataEditingCheckLabelsRequest = {dataset_name: string, version?: (string | null) | undefined, text_column: string, label_column: string, sample_size?: number | undefined};

export type CreateApiV1DataEditingCheckLabelsArgs = {body: DataEditingCheckLabelsRequest};

export type CreateApiV1DataEditingCheckLabelsOptions = {baseUrl: string, ApiKeyAuth?: string | undefined, fetch?: typeof fetch | undefined};

export const labelCheckResult = z.object({row_index: z.number().int(), text: z.string(), current_label: z.string(), suggested_label: z.string(), confidence: z.number(), reasoning: z.string()});

export const dataEditingCheckLabelsResponse = z.object({success: z.boolean(), dataset_name: z.string(), dataset_version: z.string(), checked_count: z.number().int(), successful_count: z.number().int(), issues_found: z.number().int(), results: z.array(labelCheckResult)});

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
};

/**
 * Check Labels
 * 
 * POST /v1/data-editing/check-labels
 * 
 * Also accepts auth: BearerAuth
 */
export const createApiV1DataEditingCheckLabels = async (args: CreateApiV1DataEditingCheckLabelsArgs, options: CreateApiV1DataEditingCheckLabelsOptions) => {
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/data-editing/check-labels${query.size > 0 ? `?${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(dataEditingCheckLabelsResponse, await res.json())
};