import {z} from 'zod'

export type GetApiStoreNameStatisticsArgs = {storeName: string, earliest?: string | undefined, latest?: string | undefined, skip?: number | undefined};

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

export const statisticsResponseModel = z.object({commitId: z.string().optional(), commitTimestamp: z.string().optional(), predicateTripleCounts: z.record(z.string(), z.number().int()).optional(), totalTripleCount: z.number().int().optional()});

export const getApiStoreNameStatisticsResponse = z.array(statisticsResponseModel);

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 statistics records for the store
 * 
 * GET /{storeName}/statistics
 */
export const getApiStoreNameStatistics = async (args: GetApiStoreNameStatisticsArgs, options: GetApiStoreNameStatisticsOptions) => {
const {baseUrl, fetch: fetchFn = fetch} = options ?? {}

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

if (args.earliest != null) query.append("earliest", String(args.earliest))
if (args.latest != null) query.append("latest", String(args.latest))
if (args.skip != null) query.append("skip", String(args.skip))

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