import {z} from 'zod'

export type GetApiV2AvailabilityArgs = {startDate?: string | undefined, endDate?: string | undefined, slotLength?: number | undefined, jobTypes?: string | undefined, availableBased?: number | undefined, totalSpots?: number | undefined, scheduleOffset?: number | undefined, showHolidays?: number | undefined, ignoreUserAvailability?: boolean | undefined, Authorization: string};

export type GetApiV2AvailabilityOptions = {baseUrl?: string | undefined, fetch?: typeof fetch | undefined};

export const responseAvailabilitySlotV2Dto = z.object({startTime: z.string().optional(), startTimestamp: z.number().optional(), slotLength: z.number().optional(), totalSpots: z.number().optional(), openSpots: z.number().optional(), userIds: z.array(z.string()).optional()});

export const responseAvailabilitySlotsV2Dto = z.object({totalResults: z.number().optional(), data: z.array(responseAvailabilitySlotV2Dto).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 booking availability
 * 
 * GET /v2/availability
 */
export const getApiV2Availability = async (args: GetApiV2AvailabilityArgs, options?: GetApiV2AvailabilityOptions) => {
const {baseUrl = "https://api.workiz.com/crm/api", fetch: fetchFn = fetch} = options ?? {}

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

if (args.startDate != null) query.append("startDate", String(args.startDate))
if (args.endDate != null) query.append("endDate", String(args.endDate))
if (args.slotLength != null) query.append("slotLength", String(args.slotLength))
if (args.jobTypes != null) query.append("jobTypes", String(args.jobTypes))
if (args.availableBased != null) query.append("availableBased", String(args.availableBased))
if (args.totalSpots != null) query.append("totalSpots", String(args.totalSpots))
if (args.scheduleOffset != null) query.append("scheduleOffset", String(args.scheduleOffset))
if (args.showHolidays != null) query.append("showHolidays", String(args.showHolidays))
if (args.ignoreUserAvailability != null) query.append("ignoreUserAvailability", String(args.ignoreUserAvailability))
if (args.Authorization != null) headers.set("Authorization", String(args.Authorization))

const url = `${baseUrl.replace(/\/+$/, '')}/v2/availability${query.size > 0 ? `?${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(responseAvailabilitySlotsV2Dto, await res.json())
};