import {z} from 'zod'

export type GetApiV1TelemetryCountersMetricNameTimeSeriesArgs = {metric_name: string, time_range?: ('15m' | '30m' | '1h' | '2h' | '6h' | '1d' | '7d' | '30d') | undefined, evaluation_id?: (string | null) | undefined, agent_configuration_id?: (string | null) | undefined};

export type GetApiV1TelemetryCountersMetricNameTimeSeriesOptions = {baseUrl: string, fetch?: typeof fetch | undefined};

export const metricLabels = z.object({agent_id: z.string().nullable().optional(), deployment_environment: z.string().nullable().optional(), exported_job: z.string().nullable().optional(), job: z.string().nullable().optional(), service_name: z.string().nullable().optional(), service_namespace: z.string().nullable().optional(), service_version: z.string().nullable().optional(), team_id: z.string().nullable().optional(), user_id: z.string().nullable().optional(), evaluation_id: z.string().nullable().optional()});

export const dataPoint = z.object({timestamp: z.number().int(), value: z.number()});

export const timeSeries = z.object({labels: metricLabels.optional(), points: z.array(dataPoint)});

export const metricQueryResponse = z.object({metric: z.string(), series: z.array(timeSeries), labels: metricLabels.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
};

/**
 * Get Counter Time Series
 * 
 * GET /v1/telemetry/counters/{metric_name}/time_series
 */
export const getApiV1TelemetryCountersMetricNameTimeSeries = async (args: GetApiV1TelemetryCountersMetricNameTimeSeriesArgs, options: GetApiV1TelemetryCountersMetricNameTimeSeriesOptions) => {
const {baseUrl, fetch: fetchFn = fetch} = options ?? {}

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

if (args.time_range != null) query.append("time_range", String(args.time_range))
if (args.evaluation_id != null) query.append("evaluation_id", String(args.evaluation_id))
if (args.agent_configuration_id != null) query.append("agent_configuration_id", String(args.agent_configuration_id))

const url = `${baseUrl.replace(/\/+$/, '')}/v1/telemetry/counters/${encodeURIComponent(String(args.metric_name))}/time_series${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(metricQueryResponse, await res.json())
};