import {z} from 'zod'

export type GetApiContainersIdStatsArgs = {id: string, stream?: boolean | undefined, 'one-shot'?: boolean | undefined};

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

export const containerPidsStats = z.object({current: z.number().int().nullable().optional(), limit: z.number().int().nullable().optional()}).nullable();

export const containerBlkioStatEntry = z.object({major: z.number().int().optional(), minor: z.number().int().optional(), op: z.string().optional(), value: z.number().int().optional()}).nullable();

export const containerBlkioStats = z.object({io_service_bytes_recursive: z.array(containerBlkioStatEntry).optional(), io_serviced_recursive: z.array(containerBlkioStatEntry).nullable().optional(), io_queue_recursive: z.array(containerBlkioStatEntry).nullable().optional(), io_service_time_recursive: z.array(containerBlkioStatEntry).nullable().optional(), io_wait_time_recursive: z.array(containerBlkioStatEntry).nullable().optional(), io_merged_recursive: z.array(containerBlkioStatEntry).nullable().optional(), io_time_recursive: z.array(containerBlkioStatEntry).nullable().optional(), sectors_recursive: z.array(containerBlkioStatEntry).nullable().optional()}).nullable();

export const containerStorageStats = z.object({read_count_normalized: z.number().int().nullable().optional(), read_size_bytes: z.number().int().nullable().optional(), write_count_normalized: z.number().int().nullable().optional(), write_size_bytes: z.number().int().nullable().optional()}).nullable();

export const containerCPUUsage = z.object({total_usage: z.number().int().optional(), percpu_usage: z.array(z.number().int()).nullable().optional(), usage_in_kernelmode: z.number().int().optional(), usage_in_usermode: z.number().int().optional()}).nullable();

export const containerThrottlingData = z.object({periods: z.number().int().optional(), throttled_periods: z.number().int().optional(), throttled_time: z.number().int().optional()}).nullable();

export const containerCPUStats = z.object({cpu_usage: containerCPUUsage.optional(), system_cpu_usage: z.number().int().nullable().optional(), online_cpus: z.number().int().nullable().optional(), throttling_data: containerThrottlingData.optional()}).nullable();

export const containerMemoryStats = z.object({usage: z.number().int().nullable().optional(), max_usage: z.number().int().nullable().optional(), stats: z.record(z.string(), z.number().int().nullable()).optional(), failcnt: z.number().int().nullable().optional(), limit: z.number().int().nullable().optional(), commitbytes: z.number().int().nullable().optional(), commitpeakbytes: z.number().int().nullable().optional(), privateworkingset: z.number().int().nullable().optional()});

export const containerStatsResponse = z.object({name: z.string().nullable().optional(), id: z.string().nullable().optional(), read: z.string().optional(), preread: z.string().optional(), pids_stats: containerPidsStats.optional(), blkio_stats: containerBlkioStats.optional(), num_procs: z.number().int().optional(), storage_stats: containerStorageStats.optional(), cpu_stats: containerCPUStats.optional(), precpu_stats: containerCPUStats.optional(), memory_stats: containerMemoryStats.optional(), networks: z.unknown()});

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 container stats based on resource usage
 * 
 * GET /containers/{id}/stats
 */
export const getApiContainersIdStats = async (args: GetApiContainersIdStatsArgs, options: GetApiContainersIdStatsOptions) => {
const {baseUrl, fetch: fetchFn = fetch} = options ?? {}

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

if (args.stream != null) query.append("stream", String(args.stream))
if (args['one-shot'] != null) query.append("one-shot", String(args['one-shot']))

const url = `${baseUrl.replace(/\/+$/, '')}/containers/${encodeURIComponent(String(args.id))}/stats${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(containerStatsResponse, await res.json())
};