import {z} from 'zod'

export type SlotRequestSchema = {appointmentWindow?: ({start_date_time?: string | undefined, end_date_time?: string | undefined}) | undefined, identifiers?: ({shipmentReference?: string | undefined, siteCode?: string | undefined, stopSequenceNumber?: number | undefined}) | undefined};

export type CreateApiServicesAppointmentsV1SlotsArgs = {body: SlotRequestSchema};

export type CreateApiServicesAppointmentsV1SlotsOptions = {baseUrl?: string | undefined, oAuth2?: string | undefined, fetch?: typeof fetch | undefined};

export const slotTime = z.object({endDateTime: z.string().optional(), startDateTime: z.string().optional()});

export const slotResult = z.object({shipmentReference: z.string().optional(), siteCode: z.string().optional(), stopReferenceNumber: z.number().int().optional(), slots: z.array(slotTime).optional()});

export const slotsResponse = z.object({results: z.array(slotResult).optional(), status: 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
};

/**
 * Get available slots for shipment
 * 
 * POST /services/appointments/v1/slots
 */
export const createApiServicesAppointmentsV1Slots = async (args: CreateApiServicesAppointmentsV1SlotsArgs, options?: CreateApiServicesAppointmentsV1SlotsOptions) => {
const {baseUrl = "https://na12.api.project44.com", fetch: fetchFn = fetch, oAuth2} = options ?? {}

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

if (oAuth2 !== undefined) headers.set('authorization', `Bearer ${oAuth2}`)

const url = `${baseUrl.replace(/\/+$/, '')}/services/appointments/v1/slots${query.size > 0 ? `?${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(slotsResponse, await res.json())
};