import { PureComponent, Fragment, Suspense, lazy } from 'react';

import Clock from './time/Clock';
import Greeting from './greeting/Greeting';
import Quote from './quote/Quote';
import Search from './search/Search';
import QuickLinks from './quicklinks/QuickLinks';
import Date from './time/Date';
import Message from './message/Message';
import Reminder from './reminder/Reminder';

import EventBus from 'modules/helpers/eventbus';

const Weather = lazy(() => import('./weather/Weather'));
const renderLoader = () => <></>;

export default class Widgets extends PureComponent {
  online = localStorage.getItem('offlineMode') === 'false';
  constructor() {
    super();
    this.state = {
      order: JSON.parse(localStorage.getItem('order')),
      welcome: localStorage.getItem('showWelcome'),
    };
    // widgets we can re-order
    this.widgets = {
      time: this.enabled('time') ? <Clock /> : null,
      greeting: this.enabled('greeting') ? <Greeting /> : null,
      quote: this.enabled('quote') ? <Quote /> : null,
      date: this.enabled('date') ? <Date /> : null,
      quicklinks: this.enabled('quicklinksenabled') && this.online ? <QuickLinks /> : null,
      message: this.enabled('message') ? <Message /> : null,
      reminder: this.enabled('reminder') ? <Reminder /> : null,
    };
  }

  enabled(key) {
    return localStorage.getItem(key) === 'true';
  }

  componentDidMount() {
    EventBus.on('refresh', (data) => {
      if (data === 'widgets') {
        this.setState({
          order: JSON.parse(localStorage.getItem('order')),
        });
      }

      if (data === 'widgetsWelcome') {
        this.setState({
          welcome: localStorage.getItem('showWelcome'),
        });
        localStorage.setItem('showWelcome', true);
        window.onbeforeunload = () => {
          localStorage.clear();
        };
      }

      if (data === 'widgetsWelcomeDone') {
        this.setState({
          welcome: localStorage.getItem('showWelcome'),
        });
        window.onbeforeunload = null;
      }
    });
  }

  render() {
    // don't show when welcome is there
    if (this.state.welcome !== 'false') {
      return <div id="widgets"></div>;
    }

    // allow for re-ordering widgets
    let elements = [];

    if (this.state.order) {
      this.state.order.forEach((element) => {
        elements.push(<Fragment key={element}>{this.widgets[element]}</Fragment>);
      });
    } else {
      // prevent error
      elements = [
        <Greeting />,
        <Clock />,
        <QuickLinks />,
        <Quote />,
        <Date />,
        <Message />,
        <Reminder />,
      ];
    }

    return (
      <div id="widgets">
        <Suspense fallback={renderLoader()}>
          {this.enabled('searchBar') ? <Search /> : null}
          {elements}
          {this.enabled('weatherEnabled') && this.online ? <Weather /> : null}
        </Suspense>
      </div>
    );
  }
}