import {z} from 'zod'

export type DataGranularity = 'Daily' | 'Hourly' | 'Minute';

export type GetApiAppsAppIdStatisticsArgs = {appId: string, fromDate: string, toDate?: string | undefined, granularity: DataGranularity};

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

export const statistics = z.object({targetLatencyChart: z.record(z.string(), z.number()).optional(), activeRegionsChart: z.record(z.string(), z.number().int().nullable()).optional(), latencyChart: z.record(z.string(), z.number()).optional(), instancesChart: z.record(z.string(), z.number().int().nullable()).optional(), cpuUsageChart: z.record(z.string(), z.number()).optional(), ramUsageChart: z.record(z.string(), z.number()).optional(), trafficChart: z.record(z.string(), z.number()).optional(), volumesSplitUsageChart: z.record(z.string(), z.record(z.string(), z.number())).optional(), volumesSplitCapacityChart: z.record(z.string(), z.record(z.string(), z.number())).optional(), volumesUsageChart: z.record(z.string(), z.number()).optional(), volumesCapacityChart: z.record(z.string(), z.number()).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 Application Statistics
 * 
 * GET /apps/{appId}/statistics
 */
export const getApiAppsAppIdStatistics = async (args: GetApiAppsAppIdStatisticsArgs, options?: GetApiAppsAppIdStatisticsOptions) => {
const {baseUrl = "https://api.bunny.net/mc", fetch: fetchFn = fetch, AccessKey} = options ?? {}

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

if (args.fromDate != null) query.append("fromDate", String(args.fromDate))
if (args.toDate != null) query.append("toDate", String(args.toDate))
if (args.granularity != null) query.append("granularity", String(args.granularity))
if (AccessKey !== undefined) headers.set("AccessKey", AccessKey)

const url = `${baseUrl.replace(/\/+$/, '')}/apps/${encodeURIComponent(String(args.appId))}/statistics${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(statistics, await res.json())
};