import {z} from 'zod'

export type GetApiTransactionsAggregatedHistoryArgs = {metric: 'transaction_count', address?: Array<string> | undefined, workchain?: number | undefined, from?: string | undefined, to?: string | undefined, interval: '24h' | '8h' | '4h' | '1h' | '15m'};

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

export const historyTransactionsRes = z.object({count_results: z.array(z.object({timestamp: z.string().optional(), value: z.number().int().optional()})).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
};

/**
 * aggregated transactions grouped by timestamp
 * 
 * GET /transactions/aggregated/history
 */
export const getApiTransactionsAggregatedHistory = async (args: GetApiTransactionsAggregatedHistoryArgs, options?: GetApiTransactionsAggregatedHistoryOptions) => {
const {baseUrl = "https://anton.tools/api/v0", fetch: fetchFn = fetch} = options ?? {}

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

if (args.metric != null) query.append("metric", String(args.metric))
for (const item of args.address ?? []) query.append("address", String(item))
if (args.workchain != null) query.append("workchain", String(args.workchain))
if (args.from != null) query.append("from", String(args.from))
if (args.to != null) query.append("to", String(args.to))
if (args.interval != null) query.append("interval", String(args.interval))

const url = `${baseUrl.replace(/\/+$/, '')}/transactions/aggregated/history${query.size > 0 ? `?${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(historyTransactionsRes, await res.json())
};