import {z} from 'zod'

export type GetApiV2ScheduleEntriesArgs = {schedule_id: string, entry_window_start?: string | undefined, entry_window_end?: string | undefined};

export type GetApiV2ScheduleEntriesOptions = {baseUrl?: string | undefined, fetch?: typeof fetch | undefined};

export const afterPaginationMetaResultV2 = z.object({after: z.string(), after_url: z.string()});

export const userV2 = z.object({email: z.string().optional(), id: z.string(), name: z.string(), role: z.enum(["viewer", "responder", "administrator", "owner", "unset"]), slack_user_id: z.string().optional()});

export const scheduleEntryV2 = z.object({end_at: z.string(), entry_id: z.string().optional(), fingerprint: z.string().optional(), layer_id: z.string().optional(), rotation_id: z.string().optional(), start_at: z.string(), user: userV2.optional()});

export const scheduleEntriesListPayloadV2 = z.object({final: z.array(scheduleEntryV2), overrides: z.array(scheduleEntryV2), scheduled: z.array(scheduleEntryV2)});

export const schedulesV2ListScheduleEntriesResponseBody = z.object({pagination_meta: afterPaginationMetaResultV2.optional(), schedule_entries: scheduleEntriesListPayloadV2});

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
};

/**
 * ListScheduleEntries Schedules V2
 * 
 * GET /v2/schedule_entries
 */
export const getApiV2ScheduleEntries = async (args: GetApiV2ScheduleEntriesArgs, options?: GetApiV2ScheduleEntriesOptions) => {
const {baseUrl = "https:////api.incident.io", fetch: fetchFn = fetch} = options ?? {}

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

if (args.schedule_id != null) query.append("schedule_id", String(args.schedule_id))
if (args.entry_window_start != null) query.append("entry_window_start", String(args.entry_window_start))
if (args.entry_window_end != null) query.append("entry_window_end", String(args.entry_window_end))

const url = `${baseUrl.replace(/\/+$/, '')}/v2/schedule_entries${query.size > 0 ? `?${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(schedulesV2ListScheduleEntriesResponseBody, await res.json())
};