Introduction

Nearly every dapp needs to connect to a crypto wallet.There are many options such as metamask, ledger. Hydro sdk wallet makes it easier to integrate different kinds of wallets together, and give an uniform interfaces to interative with them.

Hydro SDK wallet also support browser local wallets. Secrets are saved in browser localstorage under your domain.

There is a default ui in this package. You can also implement another ui as you wish.

• Metamask
• Browser Local Wallet
• Wallet Connect Protocol
• Ledger Wallet
• Trust Wallet
• Coinbase Wallet
• Imtoken Wallet
• Wallet Link (Coinbase Wallet)
• D'CENT Wallet
• Fortmatic
• Trezor

This package requires React and Redux.

npm i @gongddex/hydro-sdk-wallet

The store should know how to handle actions coming from the wallet components. To enable this, we need to pass the WalletReducer to your store.

import { createStore, combineReducers } from "redux";
import { WalletReducer } from "@gongddex/hydro-sdk-wallet";

const rootReducer = combineReducers({
  // ...your other reducers here
  // you have to pass WalletReducer under 'WalletReducer' key
  WalletReducer
});

const store = createStore(rootReducer);

To make the wallet logic work. We need to mount the Wallet and WalletButton components into your app. They should be mounted into Provider(see more details about Provider in react-redux). When the components is initialized, some monitors will start to work as well. They are monitoring the web3 wallet status(not installed, locking, account changed), ledger status(locked or not), and balances of all available addresses. You can config wallet through props. See more datials in the api section below.

import React from "react";
import { Provider } from "react-redux";
import { Wallet, WalletButton } from "@gongddex/hydro-sdk-wallet";
import { store } from "./store";
import "@gongddex/hydro-sdk-wallet/index.css";

class App extends React.Component {
  render() {
    return (
      <Provider store={store}>
        // ... your components
        <Wallet nodeUrl="https://ropsten.infura.io" />
        <WalletButton />
      </Provider>
    );
  }
}

We can get the current selected account by using selector functions.

import React from "react";
import { connect } from "react-redux";

class App extends React.Component {
  signMessage = async () => {
    const { currentAccount } = this.props;
    const signature = await currentAccount.wallet.signPersonalMessage("test message");
    console.log(signature);
  };

  render() {
    return (
      <div>
        <button onClick={this.signMessage} />
      </div>
    );
  }
}
export default connect(state => {
  return {
    currentAccount: getSelectedAccount(state)
  };
})(App);

Methods to get data from redux store.

• getAccount(state, accountID) Return the corresponding account
• getSelectedAccount(state) Return the selected account
• getAccounts(state) Return all available accounts

These functions are redux action creators. You need to dispatch the result to store.

• selectAccount(accountID, type) Change Selected Account
• unlockBrowserWalletAccount(accountID, password) Unlock a browser local wallet
• showWalletModal() Show the wallets modal
• hideWalletModal() Hide the wallets modal

When we get an account from redux store, we can call some functions of account.wallet object.

/**
 *  Draft transaction
 */
const tx = {
  from: "0xbc28ea04101f03ea7a94c1379bc3ab32e65e62d3",
  to: "0x0000000000000000000000000000000000000000",
  nonce: 1,
  gas: 100000,
  value: "0x0",
  data: "0x0"
};

/**
 *  Send transaction
 */
const txId = await wallet.sendTransaction(tx);

/**
 *  Draft Message Parameters
 */
const msgParams = [
  "HYDRO-AUTHENTICATION" //message
];

/**
 *  Sign personal message
 */
const signature = await wallet.signPersonalMessage(msgParams);

/**
 *  Draft Custom Request
 */
const customRequest = [
  "eth_getTransactionReceipt", //method
  ["0x452817c981809fb7fab716dc84114b97c9ad2542c72fb9ed2c64d79e1bddb937"] //params
];

/**
 *  Send Custom Request
 */
const customResponse = await wallet.sendCustomRequest(customRequest);

There are some examples projects. You can find commands to start these examples in package.json and source code in examples dir.

This project is licensed under the Apache 2.0 License - see the LICENSE file for details