import {z} from 'zod'

export type Filter = {attribute: string, values?: Array<string> | undefined};

export type GetMetricDataInputCsidFilter = {id: string, csidFilter?: Array<number> | undefined, filters?: Array<Filter> | undefined, aggregations?: Array<string> | undefined, timezone: string};

export type Interval = {start: string, end: string};

export type Preset = {value: string};

export type PeriodFilter = Interval | Preset;

export type GetMetricDataInputPeriodFilter = {id: string, periodFilter: PeriodFilter, filters?: Array<Filter> | undefined, aggregations?: Array<string> | undefined, timezone: string};

export type GetMetricDataInput = GetMetricDataInputCsidFilter | GetMetricDataInputPeriodFilter;

export type CreateApiBetaAnalyticsMetricsArgs = {body: GetMetricDataInput};

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

export const status = z.object({status: z.string(), description: z.string().optional()});

export const presenceDuration = z.object({value: z.number(), status: status});

export const agentPresenceDurationValue = z.object({value: z.array(presenceDuration).optional(), description: z.string().optional()});

export const doubleAggregateValue = z.object({value: z.number(), measure: z.string()});

export const longAggregateValue = z.object({value: z.number().int(), measure: z.string()});

export const aggregateValue = z.union([agentPresenceDurationValue, doubleAggregateValue, longAggregateValue]);

export const metricData = z.object({id: z.string(), aggregates: z.array(aggregateValue).optional()});

export const getMetricDataOutput = z.object({data: metricData});

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 Metric Data
 * 
 * POST /beta/analytics/metrics
 */
export const createApiBetaAnalyticsMetrics = async (args: CreateApiBetaAnalyticsMetricsArgs, options?: CreateApiBetaAnalyticsMetricsOptions) => {
const {baseUrl = "https://dev.dixa.io", fetch: fetchFn = fetch, ApiKeyAuth} = options ?? {}

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

if (ApiKeyAuth !== undefined) headers.set("Authorization", ApiKeyAuth)

const url = `${baseUrl.replace(/\/+$/, '')}/beta/analytics/metrics${query.size > 0 ? `?${query}` : ''}`

const res = await fetchFn(url, {method: "POST", headers, body: JSON.stringify(args.body)})

if (!res.ok) throw new Error(`Request failed with status ${res.status}`, {cause: {status: res.status, body: await res.text()}})

return validateResponse(getMetricDataOutput, await res.json())
};