import {z} from 'zod'

export type GetApiOrdersOrderIdentifiersLabelArgs = {orderIdentifiers: string, documentType: 'postageLabel' | 'despatchNote' | 'CN22' | 'CN23' | 'commercialInvoice', includeReturnsLabel?: boolean | undefined, includeCN?: boolean | undefined, includeCommercialInvoice?: boolean | undefined};

export type GetApiOrdersOrderIdentifiersLabelOptions = {baseUrl: string, Bearer?: string | undefined, fetch?: typeof fetch | undefined};

export const getApiOrdersOrderIdentifiersLabelResponse = z.string();

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
};

/**
 * Return a single PDF file with generated label and/or associated document(s)
 * 
 * GET /orders/{orderIdentifiers}/label
 */
export const getApiOrdersOrderIdentifiersLabel = async (args: GetApiOrdersOrderIdentifiersLabelArgs, options: GetApiOrdersOrderIdentifiersLabelOptions) => {
const {baseUrl, fetch: fetchFn = fetch, Bearer} = options ?? {}

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

if (args.documentType != null) query.append("documentType", String(args.documentType))
if (args.includeReturnsLabel != null) query.append("includeReturnsLabel", String(args.includeReturnsLabel))
if (args.includeCN != null) query.append("includeCN", String(args.includeCN))
if (args.includeCommercialInvoice != null) query.append("includeCommercialInvoice", String(args.includeCommercialInvoice))
if (Bearer !== undefined) headers.set("Authorization", Bearer)

const url = `${baseUrl.replace(/\/+$/, '')}/orders/${encodeURIComponent(String(args.orderIdentifiers))}/label${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(getApiOrdersOrderIdentifiersLabelResponse, await res.json())
};