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

class WBProcessListing extends Component {

  constructor(...args) {
    super(...args);
    this.state.rows = [];
    this.state.numPages = 0;
    this.state.requestStates = [ 'Uncommitted', 'Committed', 'Final' ];
    this.state.containerStates = [ 'Queued', 'Locked', 'Running', 'Cancelled', 'Complete' ];
    this.state.reqStateMask = [ true, true, true ];
    this.state.contStateMask = [ true, true, true, true, true ];
  }

  componentDidMount() {
    this.fetchItems();
  }

  prepareRows(items) {
    return items.map(item => [
      (<div>
        <div>
          <a href="#"
            onclick={ e => { e.preventDefault(); route('/process/' + item['uuid']) }}>{ item['name'] }</a>
        </div>
        <div>{ item['uuid'] }</div>
      </div>),
      item['state'],
      item['owner_uuid'],
      item['created_at'].replace('T', ' ').substr(0, item['created_at'].length - 11) + '',
      item['output_uuid'],
      (<div>
        <button class="btn btn-outline-danger"><i class="fas fa-trash"></i></button>
      </div>)
    ]);
  }

  fetchItems() {
    let { arvHost, arvToken } = this.props.appState;
    let i = this.props.activePage;
    let filters = [
      [ 'state', 'in', this.state.requestStates.filter((_, idx) => this.state.reqStateMask[idx]) ]
    ];
    if (this.props.ownerUuid)
      filters.push([ 'owner_uuid', '=', this.props.ownerUuid ]);
    let prom = makeArvadosRequest(arvHost, arvToken,
      '/arvados/v1/container_requests?filters=' + encodeURIComponent(JSON.stringify(filters)) +
      '&limit=' + encodeURIComponent(this.props.itemsPerPage) +
      '&offset=' + encodeURIComponent(this.props.itemsPerPage * i));
    prom = prom.then(xhr =>
      this.setState({
        'numPages': Math.ceil(xhr.response['items_available'] / xhr.response['limit']),
        'rows': this.prepareRows(xhr.response['items'])
      }));
  }

  componentWillReceiveProps(nextProps, nextState) {
    // this.setState({ 'rows': [] }); // .rows = [];
    this.props = nextProps;
    this.fetchItems();
  }

  render({ appState, ownerUuid, activePage, onPageChanged },
    { rows, numPages, requestStates, containerStates,
      reqStateMask, contStateMask }) {

    return (
      <div>
        <WBCheckboxes items={ requestStates } checked={ reqStateMask }
          cssClass="float-left mx-2 my-2" title="Request State: "
          onChange={ () => this.fetchItems() } />
        <WBCheckboxes items={ containerStates } checked={ contStateMask }
          cssClass="float-left mx-2 my-2" title="Container State: "
          onChange={ () => this.fetchItems() } />

        <WBTable columns={ [ 'Name', 'Status', 'Owner', 'Created At (UTC)', 'Output', 'Actions' ] }
          rows={ rows } />

        <WBPagination numPages={ numPages }
          activePage={ activePage }
          onPageChanged={ i => onPageChanged(i) } />
      </div>
    );
  }
}

WBProcessListing.defaultProps = {
  'itemsPerPage': 100,
  'ownerUuid': null
};

export default WBProcessListing;