#!/usr/bin/env node

import assert from 'node:assert/strict';
import { readFile } from 'node:fs/promises';
import { dirname, resolve } from 'node:path';
import { fileURLToPath } from 'node:url';
import {
  Network,
  PrivateKey,
  Topology,
  unicryptoReady
} from 'universa-core2';

const sourceDirectory = dirname(fileURLToPath(import.meta.url));
const topologyFile = resolve(sourceDirectory, 'universa.json');

await unicryptoReady;

const topologyData = JSON.parse(await readFile(topologyFile, 'utf8'));
const topology = await Topology.load(topologyData);
const privateKey = await PrivateKey.generate({ strength: 2048 });
const network = new Network(privateKey, {
  topology,
  directConnection: true
});

console.log(`Connecting to ${topology.size()} Universa nodes from ${topologyFile}`);
await network.connect();

const response = await network.command('sping');
assert.equal(response?.sping, 'spong', 'unexpected network state response');

console.log(`Universa network is functioning: ${network.size()} nodes, sping=spong`);