import {z} from 'zod'

export type GetApiV1ChecksHeartbeatsCheckIdEventsArgs = {checkId: string, startTime?: string | undefined, endTime?: string | undefined, limit?: number | undefined, 'x-checkly-account'?: string | undefined};

export type GetApiV1ChecksHeartbeatsCheckIdEventsOptions = {baseUrl?: string | undefined, Bearer?: string | undefined, fetch?: typeof fetch | undefined};

export const heartbeatsV1Event = z.object({id: z.string(), state: z.enum(["FAILING", "EARLY", "RECEIVED", "GRACE", "LATE"]).optional(), timestamp: z.string().optional(), source: z.string().nullable().optional(), userAgent: z.string().nullable().optional()});

export const heartbeatsV1AvailabilitySuccessRatio = z.object({previousPeriod: z.number().optional(), currentPeriod: z.number().optional()});

export const heartbeatsV1AvailabilityResponse = z.object({successRatio: heartbeatsV1AvailabilitySuccessRatio.optional(), totalEntitiesCurrentPeriod: z.number().optional()}).nullable();

export const heartbeatsV1EventStats = z.object({last24Hours: heartbeatsV1AvailabilityResponse.optional(), last7Days: heartbeatsV1AvailabilityResponse.optional()});

export const heartbeatsV1EventsForCheck = z.object({events: z.array(heartbeatsV1Event).optional(), stats: heartbeatsV1EventStats.optional()});

export const heartbeatsV1EventsResponse = z.array(heartbeatsV1EventsForCheck);

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
};

/**
 * Get a list of events for a heartbeat
 * 
 * GET /v1/checks/heartbeats/{checkId}/events
 */
export const getApiV1ChecksHeartbeatsCheckIdEvents = async (args: GetApiV1ChecksHeartbeatsCheckIdEventsArgs, options?: GetApiV1ChecksHeartbeatsCheckIdEventsOptions) => {
const {baseUrl = "https://api.checklyhq.com", fetch: fetchFn = fetch, Bearer} = 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 (args.limit != null) query.append("limit", String(args.limit))
if (args['x-checkly-account'] != null) headers.set("x-checkly-account", String(args['x-checkly-account']))
if (Bearer !== undefined) headers.set('authorization', `Bearer ${Bearer}`)

const url = `${baseUrl.replace(/\/+$/, '')}/v1/checks/heartbeats/${encodeURIComponent(String(args.checkId))}/events${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(heartbeatsV1EventsResponse, await res.json())
};