import {z} from 'zod'

export type GateExitRequestFromHaulaway = {carrierScac: string, driverLicense: string, gatePassCode: string, loadNumber: string, loadedVehicles: Array<{damages?: (Array<{location?: string | undefined, severity?: string | undefined, type?: string | undefined}>) | undefined, vin: string}>, outGateLocation: string, trailerNumber: string, truckNumber: string};

export type CreateApiV1ExitRequestArgs = {body: GateExitRequestFromHaulaway};

export type CreateApiV1ExitRequestOptions = {baseUrl?: string | undefined, fetch?: typeof fetch | undefined};

export const gateExitRequestResponseFromBNSF = z.object({errors: z.array(z.object({code: z.string().optional(), message: z.string().optional(), vin: z.string().optional()})).optional(), gateExitRequestFromHaulaway: z.object({carrierScac: z.string().optional(), driverLicense: z.string().optional(), gatePassCode: z.string().optional(), loadNumber: z.string().optional(), loadedVehicles: z.array(z.object({damages: z.array(z.object({location: z.string().optional(), severity: z.string().optional(), type: z.string().optional()})).optional(), vin: z.string().optional()})).optional(), outGateLocation: z.string().optional(), trailerNumber: z.string().optional(), truckNumber: z.string().optional()}).optional(), haulPass: z.string().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
};

/**
 * Haul Away Gate Exit Request – Allow truckers and/or dispatchers to submit load details AT outgate.
 * 
 * POST /v1/exit-request
 */
export const createApiV1ExitRequest = async (args: CreateApiV1ExitRequestArgs, options?: CreateApiV1ExitRequestOptions) => {
const {baseUrl = "https://api.bnsf.com:6443", fetch: fetchFn = fetch} = options ?? {}

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

const url = `${baseUrl.replace(/\/+$/, '')}/v1/exit-request${query.size > 0 ? `?${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(gateExitRequestResponseFromBNSF, await res.json())
};