import {z} from 'zod'

export type GetApiV3SchedulesIdOverridesArgs = {id: string, since: string, until: string, time_zone?: string | undefined, overflow?: boolean | undefined, limit?: number | undefined, offset?: number | undefined};

export type GetApiV3SchedulesIdOverridesOptions = {baseUrl?: string | undefined, apiKey?: string | undefined, fetch?: typeof fetch | undefined};

export const shiftMember = z.object({type: z.enum(["user_member", "empty_member"]), user_id: z.string().optional()});

export const overrideShift = z.object({id: z.string(), type: z.literal("override_shift"), rotation_id: z.string().optional(), custom_shift_id: z.string().optional(), start_time: z.string(), end_time: z.string(), overridden_member: shiftMember, overriding_member: shiftMember, self: z.string().optional(), html_url: z.string().optional()});

export const getApiV3SchedulesIdOverridesResponse = z.object({overrides: z.array(overrideShift), limit: z.number().int().optional(), offset: z.number().int().optional(), more: z.boolean().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 overrides
 * 
 * GET /v3/schedules/{id}/overrides
 */
export const getApiV3SchedulesIdOverrides = async (args: GetApiV3SchedulesIdOverridesArgs, options?: GetApiV3SchedulesIdOverridesOptions) => {
const {baseUrl = "https://api.pagerduty.com", fetch: fetchFn = fetch, apiKey} = options ?? {}

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

if (args.since != null) query.append("since", String(args.since))
if (args.until != null) query.append("until", String(args.until))
if (args.time_zone != null) query.append("time_zone", String(args.time_zone))
if (args.overflow != null) query.append("overflow", String(args.overflow))
if (args.limit != null) query.append("limit", String(args.limit))
if (args.offset != null) query.append("offset", String(args.offset))
if (apiKey !== undefined) headers.set("Authorization", apiKey)

const url = `${baseUrl.replace(/\/+$/, '')}/v3/schedules/${encodeURIComponent(String(args.id))}/overrides${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(getApiV3SchedulesIdOverridesResponse, await res.json())
};