import {z} from 'zod'

export type GetApiApiV1CalendarEventsArgs = {start: string, end: string, filter?: string | undefined, directReportsOnly?: boolean | undefined, includePersons?: boolean | undefined, page?: number | undefined, pageSize?: number | undefined};

export type GetApiApiV1CalendarEventsOptions = {baseUrl?: string | undefined, basic?: {username: string, password: string} | undefined, fetch?: typeof fetch | undefined};

export const calendarTimeOffCalendarEventV1 = z.object({id: z.string(), type: z.literal("TIME_OFF"), start: z.string(), end: z.string(), employeeId: z.number().int(), timeOffTypeId: z.number().int().nullable()});

export const calendarHolidayCalendarEventV1 = z.object({id: z.string(), type: z.literal("HOLIDAY"), start: z.string(), end: z.string(), name: z.string()});

export const calendarBirthdayCalendarEventV1 = z.object({id: z.string(), type: z.literal("BIRTHDAY"), start: z.string(), end: z.string(), employeeId: z.number().int()});

export const calendarAnniversaryCalendarEventV1 = z.object({id: z.string(), type: z.literal("ANNIVERSARY"), start: z.string(), end: z.string(), employeeId: z.number().int(), years: z.number().int()});

export const calendarCalendarEventPersonV1 = z.object({id: z.number().int(), firstName: z.string(), lastName: z.string(), displayName: z.string(), jobTitle: z.string().nullable(), photoUrl: z.string().nullable()});

export const getApiApiV1CalendarEventsResponse = z.object({data: z.array(z.discriminatedUnion("type", [calendarTimeOffCalendarEventV1, calendarHolidayCalendarEventV1, calendarBirthdayCalendarEventV1, calendarAnniversaryCalendarEventV1])).optional(), persons: z.record(z.string(), calendarCalendarEventPersonV1).optional(), _links: z.object({prev: z.object({href: z.string().optional()}).optional(), next: z.object({href: z.string().optional()}).optional()}).optional(), meta: z.object({page: z.number().int(), pageSize: z.number().int(), totalPages: z.number().int(), totalItems: z.number().int()}).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
};

/**
 * List Calendar Events
 * 
 * GET /api/v1/calendar-events
 * 
 * Also accepts auth: oauth
 */
export const getApiApiV1CalendarEvents = async (args: GetApiApiV1CalendarEventsArgs, options?: GetApiApiV1CalendarEventsOptions) => {
const {baseUrl = "https://companySubDomain.bamboohr.com", fetch: fetchFn = fetch, basic} = options ?? {}

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

if (args.start != null) query.append("start", String(args.start))
if (args.end != null) query.append("end", String(args.end))
if (args.filter != null) query.append("filter", String(args.filter))
if (args.directReportsOnly != null) query.append("directReportsOnly", String(args.directReportsOnly))
if (args.includePersons != null) query.append("includePersons", String(args.includePersons))
if (args.page != null) query.append("page", String(args.page))
if (args.pageSize != null) query.append("pageSize", String(args.pageSize))
if (basic !== undefined) headers.set('authorization', `Basic ${btoa(`${basic.username}:${basic.password}`)}`)

const url = `${baseUrl.replace(/\/+$/, '')}/api/v1/calendar-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(getApiApiV1CalendarEventsResponse, await res.json())
};