import {z} from 'zod'

export type GetApiMonitorsIdHistoryArgs = {id: string, startTime: string, endTime: string};

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

export const alertHistory = z.object({checkId: z.string(), name: z.string(), state: z.enum(["open", "closed"]), timestamp: z.string()});

export const getApiMonitorsIdHistoryResponse = z.array(alertHistory);

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
};

/**
 * Lists the notifications sent for the monitor between `startTime` and `endTime`. Each delivery is a separate item: one per notifier, and one per recipient for email notifiers. Failed deliveries are included. State changes that sent no notification, for example while the monitor had no notifiers, aren't listed. The caller needs query access to the monitor's datasets.
 * 
 * GET /monitors/{id}/history
 */
export const getApiMonitorsIdHistory = async (args: GetApiMonitorsIdHistoryArgs, options?: GetApiMonitorsIdHistoryOptions) => {
const {baseUrl = "https://api.axiom.co/v2", fetch: fetchFn = fetch, Auth} = options ?? {}

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

if (args.startTime != null) query.append("startTime", String(args.startTime))
if (args.endTime != null) query.append("endTime", String(args.endTime))
if (Auth !== undefined) headers.set('authorization', `Bearer ${Auth}`)

const url = `${baseUrl.replace(/\/+$/, '')}/monitors/${encodeURIComponent(String(args.id))}/history${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(getApiMonitorsIdHistoryResponse, await res.json())
};