import caretDownIcon from '@fortawesome/fontawesome-free-solid/faCaretDown'
import caretUpIcon from '@fortawesome/fontawesome-free-solid/faCaretUp'
import FontAwesomeIcon from '@fortawesome/react-fontawesome'
import { head, isEmpty, pick, toPairs } from 'ramda'
import React from 'react'
import { connect } from 'react-redux'
import { DropdownItem, DropdownMenu, DropdownToggle, UncontrolledDropdown } from 'reactstrap'
import { ShortUrlsRow } from './helpers/ShortUrlsRow'
import { listShortUrls } from './reducers/shortUrlsList'
import './ShortUrlsList.scss'

const SORTABLE_FIELDS = {
  dateCreated: 'Created at',
  shortCode: 'Short URL',
  originalUrl: 'Long URL',
  visits: 'Visits',
};

export class ShortUrlsList extends React.Component {
  refreshList = extraParams => {
    const { listShortUrls, shortUrlsListParams } = this.props;
    listShortUrls({
      ...shortUrlsListParams,
      ...extraParams
    });
  };
  determineOrderDir = field => {
    if (this.state.orderField !== field) {
      return 'ASC';
    }

    const newOrderMap = {
      'ASC': 'DESC',
      'DESC': undefined,
    };
    return this.state.orderDir ? newOrderMap[this.state.orderDir] : 'ASC';
  }
  orderBy = field => {
    const newOrderDir = this.determineOrderDir(field);
    this.setState({ orderField: newOrderDir !== undefined ? field : undefined, orderDir: newOrderDir });
    this.refreshList({ orderBy: { [field]: newOrderDir } })
  };
  renderOrderIcon = (field, className = 'short-urls-list__header-icon') => {
    if (this.state.orderField !== field) {
      return null;
    }

    return (
      <FontAwesomeIcon
        icon={this.state.orderDir === 'ASC' ? caretUpIcon : caretDownIcon}
        className={className}
      />
    );
  };

  constructor(props) {
    super(props);

    const { orderBy } = props.shortUrlsListParams;
    this.state = {
      orderField: orderBy ? head(Object.keys(orderBy)) : undefined,
      orderDir: orderBy ? head(Object.values(orderBy)) : undefined,
    }
  }

  componentDidMount() {
    const { match: { params } } = this.props;
    this.refreshList({ page: params.page });
  }

  renderShortUrls() {
    const { shortUrlsList, selectedServer, loading, error, shortUrlsListParams } = this.props;
    if (error) {
      return <tr><td colSpan="6" className="text-center table-danger">Something went wrong while loading short URLs :(</td></tr>;
    }

    if (loading) {
      return <tr><td colSpan="6" className="text-center">Loading...</td></tr>;
    }

    if (! loading && isEmpty(shortUrlsList)) {
      return <tr><td colSpan="6" className="text-center">No results found</td></tr>;
    }

    return shortUrlsList.map(shortUrl => (
      <ShortUrlsRow
        shortUrl={shortUrl}
        selectedServer={selectedServer}
        key={shortUrl.shortCode}
        refreshList={this.refreshList}
        shortUrlsListParams={shortUrlsListParams}
      />
    ));
  }

  renderMobileOrderingControls() {
    return (
      <div className="d-block d-md-none mb-3">
        <UncontrolledDropdown>
          <DropdownToggle caret className="btn-block">
            Order by
          </DropdownToggle>
          <DropdownMenu className="short-urls-list__order-dropdown">
            {toPairs(SORTABLE_FIELDS).map(([key, value]) =>
              <DropdownItem active={this.state.orderField === key} onClick={() => this.orderBy(key)}>
                {value}
                {this.renderOrderIcon(key, 'short-urls-list__header-icon--mobile')}
              </DropdownItem>)}
          </DropdownMenu>
        </UncontrolledDropdown>
      </div>
    );
  }

  render() {
    return (
      <React.Fragment>
        {this.renderMobileOrderingControls()}
        <table className="table table-striped table-hover">
          <thead className="short-urls-list__header">
            <tr>
              <th
                className="short-urls-list__header-cell short-urls-list__header-cell--with-action"
                onClick={() => this.orderBy('dateCreated')}
              >
                {this.renderOrderIcon('dateCreated')}
                Created at
              </th>
              <th
                className="short-urls-list__header-cell short-urls-list__header-cell--with-action"
                onClick={() => this.orderBy('shortCode')}
              >
                {this.renderOrderIcon('shortCode')}
                Short URL
              </th>
              <th
                className="short-urls-list__header-cell short-urls-list__header-cell--with-action"
                onClick={() => this.orderBy('originalUrl')}
              >
                {this.renderOrderIcon('originalUrl')}
                Long URL
              </th>
              <th className="short-urls-list__header-cell">Tags</th>
              <th
                className="short-urls-list__header-cell short-urls-list__header-cell--with-action"
                onClick={() => this.orderBy('visits')}
              >
                <span className="nowrap">{this.renderOrderIcon('visits')} Visits</span>
              </th>
              <th className="short-urls-list__header-cell">&nbsp;</th>
            </tr>
          </thead>
          <tbody>
            {this.renderShortUrls()}
          </tbody>
        </table>
      </React.Fragment>
    );
  }
}

export default connect(pick(['selectedServer', 'shortUrlsListParams']), { listShortUrls })(ShortUrlsList);