import {z} from 'zod'

export type GetApiV2ArrivalsArrivalIdStationDateArgs = {id: string, station: string, date: string, language?: ('nl' | 'en') | undefined};

export type GetApiV2ArrivalsArrivalIdStationDateOptions = {baseUrl?: string | undefined, fetch?: typeof fetch | undefined};

export const arrival = z.object({arrival_time: z.string().optional(), cancelled: z.boolean().optional(), company: z.string().optional(), delay: z.number().int().gte(0).optional(), origin_actual: z.string().optional(), origin_actual_codes: z.array(z.string()).optional(), origin_planned: z.string().optional(), platform_actual: z.string().optional(), platform_planned: z.string().optional(), platform_changed: z.boolean().optional(), remarks: z.array(z.string()).optional(), service_date: z.string().optional(), service_id: z.string().optional(), service_number: z.string().optional(), station: z.string().optional(), status: z.number().int().optional(), timestamp: z.string().optional(), type: z.string().optional(), type_code: z.string().optional(), via: z.string().optional()});

export const statusField = z.enum(["UNKNOWN", "DOWN", "RECOVERING", "UP"]);

export const getApiV2ArrivalsArrivalIdStationDateResponse = z.object({arrival: arrival.optional(), status: statusField.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
};

/**
 * Retrieve single arrival
 * 
 * GET /v2/arrivals/arrival/{id}/{station}/{date}
 */
export const getApiV2ArrivalsArrivalIdStationDate = async (args: GetApiV2ArrivalsArrivalIdStationDateArgs, options?: GetApiV2ArrivalsArrivalIdStationDateOptions) => {
const {baseUrl = "http://localhost:8080", fetch: fetchFn = fetch} = options ?? {}

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

if (args.language != null) query.append("language", String(args.language))

const url = `${baseUrl.replace(/\/+$/, '')}/v2/arrivals/arrival/${encodeURIComponent(String(args.id))}/${encodeURIComponent(String(args.station))}/${encodeURIComponent(String(args.date))}${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(getApiV2ArrivalsArrivalIdStationDateResponse, await res.json())
};