web3.js

let web3;

import store from './redux/store.js';
import {
    set_web3_instance,
    set_web3_read_instance,
    set_eth_injected,
    set_initialized,
    add_contract,
} from './redux/actions/web3Actions.js';
import {
    set_wallet,
    set_login_status,
    set_address,
    set_chain_id,
} from './redux/actions/walletActions.js';

const isEthInjected = typeof window !== 'undefined' && window.ethereum;

const initWeb3 = async () => {
    /* injected */
    if (!isEthInjected) return;

    store.dispatch(set_eth_injected(true));

    //1. get ethereum
    const ethereum = window.ethereum;

    //2. set wallet provider
    if (ethereum.isMetaMask) store.dispatch(set_wallet('isMetamask'));

    if (ethereum.isTrust) store.dispatch(set_wallet('isTrust'));

    //instance web3
    const web3 = await new Web3(ethereum);
    store.dispatch(set_web3_instance(web3));

    //detect if wallet is connected to site
    const accArr = await web3.eth.getAccounts();
    if (accArr.length === 0) store.dispatch(set_login_status(false));
    else {
        store.dispatch(set_login_status(true));
        store.dispatch(set_address(accArr[0]));
        store.dispatch(set_chain_id(await web3.eth.getChainId()));
    }

    //listen to eth change events
    ethereum.on('accountsChanged', (accounts) => {
        if (accounts.length > 0) {
            store.dispatch(set_address(accounts[0]));
        } else {
            store.dispatch(set_login_status(false));
            store.dispatch(set_address(null));
        }
    });

    // ethereum.on('connect', connectInfo => {

    //     // if(accounts[0] != null)
    //     //     store.dispatch( set_address(accounts[0]) );

    //     // store.dispatch( set_connection(true) );
    //     // console.log('cnx');
    // });

    ethereum.on('disconnect', (error) => {
        // store.dispatch(set_address(''));
        console.log(error);
    });

    ethereum.on('chainChanged', async () => {
        // window.location.reload();
        store.dispatch(set_chain_id(await web3.eth.getChainId()));
    });

    const rfcABI = await (await fetch('./abis/erc721.json')).json();

    const rfcContract = new web3.eth.Contract(
        rfcABI,
        '0xAce6827f3E99834643cd9896E74Ab9256543fb1d'
    );

    store.dispatch(add_contract('RFC', rfcContract));

    store.dispatch(set_initialized(true));
};

const initStaticWeb3 = (rpcs) => {
    rpcs.forEach(async (rpc) => {
        const { chainId, url } = rpc;
        const web3 = new Web3(url);
        store.dispatch(set_web3_read_instance(chainId, web3));

        const rfcABI = await (await fetch('./abis/erc721.json')).json();
        const rfcContract = new web3.eth.Contract(
            rfcABI,
            '0xAce6827f3E99834643cd9896E74Ab9256543fb1d'
        );

        store.dispatch(add_contract('RFC_READ', rfcContract));
    });
};

export { initWeb3, initStaticWeb3 };