101 lines
2.8 KiB
JavaScript
101 lines
2.8 KiB
JavaScript
import React, { Fragment } from 'react';
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import ReactDOM from 'react-dom';
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import web3 from "Embark/web3"
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import EmbarkJS from 'Embark/EmbarkJS';
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import PollManager from 'Embark/contracts/PollManager';
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import AdminView from './components/AdminView';
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import Voting from './components/Voting';
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import SNT from 'Embark/contracts/SNT';
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import { VotingContext } from './context';
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window['SNT'] = SNT;
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import './dapp.css';
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const getPolls = (number, pollMethod) => {
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const polls = [];
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for (let i = number-1; i >= 0; i--) {
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const poll = pollMethod(i).call();
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polls.push(poll);
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}
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return Promise.all(polls.reverse());
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}
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class App extends React.Component {
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constructor(props) {
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super(props);
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}
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state = { admin: false, pollOrder: 'NEWEST_ADDED' };
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componentDidMount(){
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__embarkContext.execWhenReady(() => {
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this._getPolls();
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this._setAccounts();
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});
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}
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setAccount(_account){
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this.setState({account: _account});
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}
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_getPolls = async () => {
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const { nPolls, poll } = PollManager.methods;
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const polls = await nPolls.call();
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const total = await polls.call();
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if (total) getPolls(total, poll).then(rawPolls => { this.setState({ rawPolls })});
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else this.setState({ rawPolls: [] });
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}
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_setAccounts() {
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const { fromWei } = web3.utils;
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web3.eth.getAccounts(async (err, [address]) => {
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const balance = await SNT.methods.balanceOf(address).call();
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this.setState({ snt: { balance: fromWei(balance) }});
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})
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}
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updatePoll = async (idPoll) => {
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const { poll } = PollManager.methods;
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const { rawPolls } = this.state;
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const newPolls = [...rawPolls];
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const updatedPoll = await poll(idPoll).call();
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newPolls[idPoll] = updatedPoll;
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this.setState({ rawPolls: newPolls });
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}
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appendToPoll = (idPoll, data) => {
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const { rawPolls } = this.state;
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const newPolls = [...rawPolls];
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newPolls[idPoll] = { ...newPolls[idPoll], ...data }
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this.setState({ rawPolls: newPolls });
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}
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setPollOrder = pollOrder => { this.setState({ pollOrder }) }
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_renderStatus(title, available) {
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let className = available ? 'pull-right status-online' : 'pull-right status-offline';
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return <Fragment>
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{title}
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<span className={className}></span>
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</Fragment>;
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}
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render(){
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const { admin } = this.state;
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const { _getPolls, updatePoll, setPollOrder, appendToPoll } = this;
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const toggleAdmin = () => this.setState({ admin: true });
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const votingContext = { getPolls: _getPolls, toggleAdmin, updatePoll, appendToPoll, setPollOrder, ...this.state };
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return (
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<VotingContext.Provider value={votingContext}>
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<Fragment>
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{admin ?
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<AdminView setAccount={this.setAccount} /> :
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<Voting />}
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</Fragment>
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</VotingContext.Provider>
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);
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}
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}
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ReactDOM.render(<App></App>, document.getElementById('app'));
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