import PropTypes from "prop-types";
import { PureComponent } from "react";

import { FormattedMessage } from "react-intl";

import ImmutablePropTypes from "react-immutable-proptypes";
import { connect } from "react-redux";

import { fetchSuggestions } from "mastodon/actions/suggestions";
import { LoadingIndicator } from "mastodon/components/loading_indicator";
import AccountCard from "mastodon/features/directory/components/account_card";

const mapStateToProps = state => ({
  suggestions: state.getIn(["suggestions", "items"]),
  isLoading: state.getIn(["suggestions", "isLoading"]),
});

class Suggestions extends PureComponent {

  static propTypes = {
    isLoading: PropTypes.bool,
    suggestions: ImmutablePropTypes.list,
    dispatch: PropTypes.func.isRequired,
  };

  componentDidMount () {
    const { dispatch } = this.props;
    dispatch(fetchSuggestions(true));
  }

  render () {
    const { isLoading, suggestions } = this.props;

    if (!isLoading && suggestions.isEmpty()) {
      return (
        <div className='explore__suggestions scrollable scrollable--flex'>
          <div className='empty-column-indicator'>
            <FormattedMessage id='empty_column.explore_statuses' defaultMessage='Nothing is trending right now. Check back later!' />
          </div>
        </div>
      );
    }

    return (
      <div className='explore__suggestions scrollable' data-nosnippet>
        {isLoading ? <LoadingIndicator /> : suggestions.map(suggestion => (
          <AccountCard key={suggestion.get("account")} id={suggestion.get("account")} />
        ))}
      </div>
    );
  }

}

export default connect(mapStateToProps)(Suggestions);