import {z} from 'zod'

export type GetApiOffersFaresDeeplinkItcoArgs = {catalogues: string, origin: string, destination: string, 'travel-date': string, 'outbound-segments': string, fare: string, 'fare-currency': string, trackingid: string, country: string, lang: string, Accept: string, 'return-date'?: string | undefined, 'cabin-class'?: string | undefined, 'return-segments'?: string | undefined, travelers?: string | undefined, 'net-fare'?: string | undefined, partnerid?: string | undefined, 'encryption-key'?: string | undefined};

export type GetApiOffersFaresDeeplinkItcoOptions = {baseUrl?: string | undefined, auth?: string | undefined, fetch?: typeof fetch | undefined};

export const getApiOffersFaresDeeplinkItcoResponse = 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
};

/**
 * LH Deep Links - ITCO
 * 
 * GET /offers/fares/deeplink/itco
 */
export const getApiOffersFaresDeeplinkItco = async (args: GetApiOffersFaresDeeplinkItcoArgs, options?: GetApiOffersFaresDeeplinkItcoOptions) => {
const {baseUrl = "https://api.lufthansa.com/v1", fetch: fetchFn = fetch, auth} = options ?? {}

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

if (args.catalogues != null) query.append("catalogues", String(args.catalogues))
if (args.origin != null) query.append("origin", String(args.origin))
if (args.destination != null) query.append("destination", String(args.destination))
if (args['travel-date'] != null) query.append("travel-date", String(args['travel-date']))
if (args['outbound-segments'] != null) query.append("outbound-segments", String(args['outbound-segments']))
if (args.fare != null) query.append("fare", String(args.fare))
if (args['fare-currency'] != null) query.append("fare-currency", String(args['fare-currency']))
if (args.trackingid != null) query.append("trackingid", String(args.trackingid))
if (args.country != null) query.append("country", String(args.country))
if (args.lang != null) query.append("lang", String(args.lang))
if (args.Accept != null) headers.set("Accept", String(args.Accept))
if (args['return-date'] != null) query.append("return-date", String(args['return-date']))
if (args['cabin-class'] != null) query.append("cabin-class", String(args['cabin-class']))
if (args['return-segments'] != null) query.append("return-segments", String(args['return-segments']))
if (args.travelers != null) query.append("travelers", String(args.travelers))
if (args['net-fare'] != null) query.append("net-fare", String(args['net-fare']))
if (args.partnerid != null) query.append("partnerid", String(args.partnerid))
if (args['encryption-key'] != null) query.append("encryption-key", String(args['encryption-key']))
if (auth !== undefined) headers.set('authorization', `Bearer ${auth}`)

const url = `${baseUrl.replace(/\/+$/, '')}/offers/fares/deeplink/itco${query.size > 0 ? `?${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(getApiOffersFaresDeeplinkItcoResponse, await res.json())
};