[doc] How to use dashd-rpc directly

[coolaj86]

"use strict";

let Fs = require("node:fs/promises");

let RpcClient = require("@dashevo/dashd-rpc/promise");

// TODO read from JSON config
let config = {
  protocol: "http",
  user: "app",
  pass: "4472bd70ac35b572d768478266e31312",
  host: "10.11.5.101",
  // mainnet=9998, testnet=19998, regtest=19898
  port: 9998,
};

const E_RPC_IN_WARMUP = -28;

async function main() {
  let file = process.argv[2];
  let rpc = new RpcClient(config);

  let ready = await rpc.getBestBlockHash().catch(function (e) {
    if (e.code === E_RPC_IN_WARMUP) {
      console.info("[INFO] RPC is connected.");
      console.warn(`[WARN] RPC is not fully synced: ${e.message}`);
      return;
    }

    throw e;
  });
  if (ready) {
    console.info("[INFO] RPC is ready.");
  }

  let addrs = [
    "XvZy1npHNGeYHCuDnB6upKqdf6XU9q94qu",
    "Xr5ZkoaLAeoFw7GGiNvuwTYZFeDcM9knMg",
  ];
  if (file) {
    let text = await Fs.readFile(file, "utf8");
    let lines = text.split(/["',\s\r\n]/).filter(Boolean);
    addrs = addrs.concat(lines);
  }

  await getUtxos(rpc, addrs);
}

async function getUtxos(rpc, addresses) {
  // getaddressbalance
  // getaddressutxos
  let ret = await rpc.getAddressUtxos({
    addresses: addresses,
  });

  console.log(
    `${addresses.length} addresses with ${ret.result.length} UTXOs between them`,
  );
}

main().catch(function (err) {
  console.error(err.stack);
  process.exit(1);
});