Get Started: Web3-React Apps

Estimated time to read: 4 minutes

Web3-React is a React framework for Ethereum that connects Web3 apps to multiple wallets and chains.

Integrate Web3 apps with Arcana Auth SDK and onboard users via social login. Enable users to sign blockchain transactions with the in-app Arcana wallet.

Prerequisites

App must be registered via the Arcana Developer Dashboard: https://dashboard.arcana.network
Optionally configure auth settings such as social login, gasless transactions, wallet user experience, etc.

Web3-React Version

We support apps using Web3-react v8.2.0 or higher.

1. Install SDKs

npmyarn

npm install --save @arcana/auth-web3-react @arcana/auth

yarn add @arcana/auth-web3-react @arcana/auth

2. Integrate

import { initializeConnector } from "@web3-react/core";
import { ArcanaConnector } from "@arcana/auth-web3-react";
import { AuthProvider } from "@arcana/auth";
import { URLS } from "../chains";

const auth = new AuthProvider(
  "xar_test_b2ddexxxxxxxxxxxxxxxxxxxx8b1fa3f"  //App client ID via Dashboard
);
export const [arcanaConnect, hooks] = initializeConnector<ArcanaConnector>(
  (actions) =>
    new ArcanaConnector(auth, {
      actions,
    })
);
...

Onboard Users

import { useEffect, useState } from "react";

import { MAINNET_CHAINS } from "../../chains";
import { hooks, arcanaConnect } from "../../connectors/arcanaWallet";
import { Card } from "../Card";

const CHAIN_IDS = Object.keys(MAINNET_CHAINS).map(Number);

const {
  useChainId,
  useAccounts,
  useIsActivating,
  useIsActive,
  useProvider,
  useENSNames,
} = hooks;

export default function ArcanaConnectCard() {
  const chainId = useChainId();
  const accounts = useAccounts();
  const isActivating = useIsActivating();

  const isActive = useIsActive();

  const provider = useProvider();
  const ENSNames = useENSNames(provider);

  const [error, setError] = useState(undefined);

  // attempt to connect eagerly on mount
  useEffect(() => {
    arcanaConnect.connectEagerly().catch((error) => {
      console.debug("Failed to connect eagerly to arcanaConnect", error);
    });
  }, []);

  return (
    <Card
      connector={arcanaConnect}
      activeChainId={chainId}
      chainIds={CHAIN_IDS}
      isActivating={isActivating}
      isActive={isActive}
      error={error}
      setError={setError}
      accounts={accounts}
      provider={provider}
      ENSNames={ENSNames}
    />
  );
}

Sign Transactions

Use AuthProvider, the EIP-1193 provider offered by the SDK, to call supported JSON/RPC functions and Web3 wallet operations in the authenticated user's context.

That's all!

The 'Web3-React' app is ready to onboard users and allow them to sign blockchain transactions.

3. Advanced Usage

AuthProvider Optional Parameters

Besides Client ID input parameter, you can optionally customize these settings in the AuthProvider constructor:

position: wallet position within the app context - left|right

theme: wallet theme - light|dark

connectOptions: compact mode for the built-in plug-and-play login UI - true|false

connectOptions: {
      compact: true // default - false
},

See AuthProvider constructor parameters for details.

Custom Login UI

You can onboard users through a custom login UI instead of the built-in plug-and-play one. See how to use custom login UI and onboard users in a 'Web3-React' app.

Arcana JWT Token

loginTokenuserDIDToken

Upon successful authentication, Arcana Auth SDK returns a unique JWT token to the app called the Arcana JWT Token. App developers can access this token via getUser() method and refer to the loginToken field of the UserInfo object.

Developers can use this token to verify the user and subsequently generate another token for app use if required.

In the future, the Arcana JWT Token will be deprecated. Use userDIDToken to verify user.

Upon successful authentication, Arcana Auth SDK returns a unique DID token to the app called the Arcana DID Token. App developers can access this token via getUser() method and refer to the userDIDToken field of the UserInfo object.

Developers can use this token to verify the user and subsequently generate another token for app use.