import {z} from 'zod'

export type GetApiFieldsFieldIdTrainRequestIdArgs = {field_id: string, request_id: string};

export type GetApiFieldsFieldIdTrainRequestIdOptions = {baseUrl?: string | undefined, bearerAuth?: string | undefined, fetch?: typeof fetch | undefined};

export const httpErrorDetails = z.object({code: z.string(), message: z.string()});

export const httpError = z.object({error: httpErrorDetails});

export const statusEnum = z.enum(["queued", "processing", "complete", "failed"]);

export const spans = z.object({end: z.number().int().optional(), start: z.number().int().optional(), label: z.number().int().optional()});

export const spanProblems = z.object({index: z.number().int().optional(), spans: z.array(spans).optional(), issue_type: z.string().optional()});

export const spanIssue = z.object({file_id: z.string().optional(), span_problems: z.array(spanProblems).optional()});

export const spanIssues = z.array(spanIssue);

export const trainingRequestStatus = z.object({error: httpError.optional(), field_id: z.string(), request_id: z.string(), status: statusEnum, span_issues: spanIssues.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
};

/**
 * Get training request
 * 
 * GET /fields/{field_id}/train/{request_id}
 */
export const getApiFieldsFieldIdTrainRequestId = async (args: GetApiFieldsFieldIdTrainRequestIdArgs, options?: GetApiFieldsFieldIdTrainRequestIdOptions) => {
const {baseUrl = "https://us.app.zuva.ai/api/v2", fetch: fetchFn = fetch, bearerAuth} = options ?? {}

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

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

const url = `${baseUrl.replace(/\/+$/, '')}/fields/${encodeURIComponent(String(args.field_id))}/train/${encodeURIComponent(String(args.request_id))}${query.size > 0 ? `?${query}` : ''}`

const res = await fetchFn(url, {method: "GET", headers})

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

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