@enjin-protos/snap/src/rpc/substrate/getBalances.ts

MetaMask snap for interacting with Enjin dApps

import type { ApiPromise } from '@polkadot/api';
import type { AccountData } from '@polkadot/types/interfaces/balances/types';
import { getKeyPair } from '../../polkadot/account';

/**
 * Returns balance as BN
 * @param api
 * @param address
 */
export async function getBalances(
  api: ApiPromise,
  address?: string
): Promise<{ reserved: string; free: string }> {
  if (!address) {
    address = (await getKeyPair()).address;
  }

  const account = (await api.query.system.account(address)) as unknown as { data: AccountData };

  return {
    free: account.data.free.toString(),
    reserved: account.data.reserved.toString()
  };
}