Calimero wallet integration utils

Calimero is a NEAR side chain - a separate chain from NEAR, but we still want the users to be able to login with their NEAR mainnet accounts. First step is syncing their full access keys from NEAR mainnet to Calimero. Also, after that - function access key to a DAPP that requests access to Calimero can be added.

Syncing account from NEAR to Calimero

Init wallet utils, e.g.:

import { CalimeroWalletUtils } from "calimero-wallet-utils";

const config = {
  shardId: 'public-portal-calimero',
  calimeroUrl: 'https://app.calimero.network',
  rpcEndpoint: 'https://api.calimero.network/api/v1/shards/cali-public-portal-calimero/neard-rpc/',
  walletNetworkId: 'mainnet'
}

const walletUtils = CalimeroWalletUtils.init(config);

Sync account:

await walletUtils.syncPrivateShardAccount(ACCOUNT_ID, signer);

where ACCOUNT_ID is near account to be synced and signer is the near-api-js Signer object containg corresponding private key in the keystore, e.g.:

const keyPair = KeyPair.fromString(PRIVATE_KEY);
const signer = await InMemorySigner.fromKeyPair(config.walletNetworkId, ACCOUNT_ID, keyPair);

Interacting with Calimero

Request a token by calling:

const xSignature = await walletUtils.generatePrivateShardXSignature(ACCOUNT_ID, signer);

Create a Calimero connection:

const calimero = await walletUtils.getCalimeroConnection(keyStore, xSignature);

Make calls to Calimero, e.g. read latest block:

const block = await calimero.connection.provider.block({ finality: "final" });
console.log(`${config.shardId} latest block: ${block.header.height}`);

Add new key to your account on Calimero:

const account = await calimero.account(ACCOUNT_ID);
const someRandomKeypair = NearAPI.utils.KeyPairEd25519.fromRandom();
const addKey = await account.addKey(someRandomKeypair.publicKey);