import {z} from 'zod'

export type GetApiV1ElementsDataArgs = {page?: number | undefined, limit?: number | undefined};

export type GetApiV1ElementsDataOptions = {baseUrl?: string | undefined, Bearer?: string | undefined, fetch?: typeof fetch | undefined};

export const elementsTags = z.array(z.string()).nullable();

export const elementsCheckGroup = z.object({name: z.string(), tags: elementsTags.optional(), activated: z.boolean()}).nullable();

export const elementsPerformanceStat = z.object({currentPeriod: z.number().nullable().optional()});

export const elementsPeriodMetrics = z.object({availability: elementsPerformanceStat.optional(), responseTimeP95: elementsPerformanceStat.optional(), responseTimeP99: elementsPerformanceStat.optional()});

export const elementsResponseTimes = z.object({avg: z.number().nullable().optional(), p95: z.number().nullable().optional(), p99: z.number().nullable().optional()});

export const elementsMetrics = z.object({"1dSuccessRatio": z.number().optional(), "1d": elementsPeriodMetrics.optional(), responseTimes: elementsResponseTimes.optional()}).nullable();

export const elementsCheckStatus = z.object({hasFailures: z.boolean(), hasErrors: z.boolean().nullable().optional(), isDegraded: z.boolean(), created_at: z.string().nullable().optional(), updated_at: z.string().nullable().optional(), metrics: elementsMetrics.optional()}).nullable();

export const elementsCheck = z.object({id: z.string(), name: z.string(), checkType: z.string(), frequency: z.number().nullable().optional(), activated: z.boolean(), muted: z.boolean(), tags: elementsTags.optional(), created_at: z.string().nullable(), isSample: z.boolean().nullable().optional(), group: elementsCheckGroup.optional(), status: elementsCheckStatus.optional()});

export const elementsResults = z.array(elementsCheck);

export const elementsSummary = z.object({total: z.number().int(), totalPassing: z.number().int(), totalFailing: z.number().int(), totalDegraded: z.number().int(), totalDeactivated: z.number().int()});

export const elementsDataResponse = z.object({results: elementsResults, summary: elementsSummary});

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
};

/**
 * Read a bounded check snapshot allowed by an Elements token
 * 
 * GET /v1/elements-data
 */
export const getApiV1ElementsData = async (args: GetApiV1ElementsDataArgs, options?: GetApiV1ElementsDataOptions) => {
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.page != null) query.append("page", String(args.page))
if (args.limit != null) query.append("limit", String(args.limit))
if (Bearer !== undefined) headers.set('authorization', `Bearer ${Bearer}`)

const url = `${baseUrl.replace(/\/+$/, '')}/v1/elements-data${query.size > 0 ? `?${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(elementsDataResponse, await res.json())
};