import { h, Component } from 'preact';
import WBTable from 'wb-table';
import WBPagination from 'wb-pagination';
import makeArvadosRequest from 'make-arvados-request';

class WBBrowseDialogCollectionList extends Component {
  constructor(...args) {
    super(...args);
    this.state.rows = [];
  }

  componentDidMount() {
    this.fetchRows();
  }

  componentWillReceiveProps(nextProps) {
    this.props = nextProps;
    this.fetchRows();
  }

  prepareRows(items) {
    const { navigate, selectWhat, makeSelectionCell } = this.props;
    return items.map(it => [
      ([].concat(selectWhat).indexOf('directory') !== -1 ? makeSelectionCell(it.uuid + '/') : null),
      (
        <a href="#" onclick={ e => { e.preventDefault();
          navigate('/browse-dialog/content/' + it.uuid + '////'); } }>{ it.name }</a>
      ),
      it.uuid
    ]);
  }

  fetchRows() {
    const { arvHost, arvToken } = this.props.app.state;
    const { ownerUuid, textSearch, page, itemsPerPage } = this.props;
    const filters = [];
    if (ownerUuid)
      filters.push(['owner_uuid', '=', ownerUuid]);
    if (textSearch)
      filters.push(['name', 'ilike', '%' + textSearch + '%']);
    let prom = makeArvadosRequest(arvHost, arvToken,
      '/arvados/v1/collections?filters=' +
      encodeURIComponent(JSON.stringify(filters)) +
      '&limit=' + itemsPerPage +
      '&offset=' + (itemsPerPage * page));
    prom = prom.then(xhr => this.setState({
      'rows': this.prepareRows(xhr.response.items),
      'numPages': Math.ceil(xhr.response.items_available / itemsPerPage)
    }));
    return prom;
  }

  render({ selectWhat, page, navigate }, { rows, numPages }) {
    return (
      <div>
        <WBTable columns={ ['', 'Name', 'UUID'] }
          headerClasses={ ['w-1'] }
          rows={ rows } />

        <WBPagination activePage={ page } numPages={ numPages }
          onPageChanged={ i => navigate({ 'bottomPage': i }) } />
      </div>
    );
  }
}

WBBrowseDialogCollectionList.defaultProps = {
  'itemsPerPage': 20
};

export default WBBrowseDialogCollectionList;