import {z} from 'zod'

export type GetApiSpecialEventsArgs = {startDate?: string | undefined, endDate?: string | undefined, page?: number | undefined, limit?: number | undefined};

export type GetApiSpecialEventsOptions = {baseUrl?: string | undefined, MuseumPlaceholderAuth?: {username: string, password: string} | undefined, fetch?: typeof fetch | undefined};

export const eventId = z.string();

export const eventName = z.string();

export const eventLocation = z.string();

export const eventDescription = z.string();

export const date = z.string();

export const eventDates = z.array(date);

export const eventPrice = z.number();

export const specialEventResponse = z.object({eventId: eventId, name: eventName, location: eventLocation, eventDescription: eventDescription, dates: eventDates, price: eventPrice});

export const listSpecialEventsResponse = z.array(specialEventResponse);

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
};

/**
 * List special events
 * 
 * GET /special-events
 */
export const getApiSpecialEvents = async (args: GetApiSpecialEventsArgs, options?: GetApiSpecialEventsOptions) => {
const {baseUrl = "https://api.fake-museum-example.com/v1", fetch: fetchFn = fetch, MuseumPlaceholderAuth} = 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.page != null) query.append("page", String(args.page))
if (args.limit != null) query.append("limit", String(args.limit))
if (MuseumPlaceholderAuth !== undefined) headers.set('authorization', `Basic ${btoa(`${MuseumPlaceholderAuth.username}:${MuseumPlaceholderAuth.password}`)}`)

const url = `${baseUrl.replace(/\/+$/, '')}/special-events${query.size > 0 ? `?${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(listSpecialEventsResponse, await res.json())
};