import {z} from 'zod'

export type GetApiV2StorageStatsArgs = {runId: string};

export type GetApiV2StorageStatsOptions = {baseUrl?: string | undefined, StorageKey?: string | undefined, fetch?: typeof fetch | undefined};

export const statsListResponse = z.object({tables: z.object({import: z.object({totalCount: z.number().int(), tables: z.array(z.object({id: z.string(), count: z.number().int(), durationTotalSeconds: z.number()}))}), export: z.object({totalCount: z.number().int(), tables: z.array(z.object({id: z.string(), count: z.number().int(), durationTotalSeconds: z.number()}))})}), files: z.object({total: z.object({count: z.number().int(), dataSizeBytes: z.object({total: z.number(), mean: z.number().nullable(), max: z.number().nullable(), min: z.number().nullable()})}), tags: z.object({other: z.number().int(), tags: z.array(z.object({tag: z.string(), count: z.number().int(), dataSizeBytes: z.object({total: z.number(), mean: z.number().nullable(), max: z.number().nullable(), min: z.number().nullable()})}))})})});

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
};

/**
 * Stats detail
 * 
 * GET /v2/storage/stats
 * 
 * Also accepts auth: ManageKey, BearerAuth
 */
export const getApiV2StorageStats = async (args: GetApiV2StorageStatsArgs, options?: GetApiV2StorageStatsOptions) => {
const {baseUrl = "https://connection.keboola.com", fetch: fetchFn = fetch, StorageKey} = options ?? {}

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

if (args.runId != null) query.append("runId", String(args.runId))
if (StorageKey !== undefined) headers.set("X-StorageApi-Token", StorageKey)

const url = `${baseUrl.replace(/\/+$/, '')}/v2/storage/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(statsListResponse, await res.json())
};