import { h, Component } from 'preact';
import WBTable from 'wb-table';
import WBBreadcrumbs from 'wb-breadcrumbs';
import { WBManifestReader } from 'wb-collection-manifest';
import makeArvadosRequest from 'make-arvados-request';

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

  getUrl(params) {
    let res = '/collection-browse/' +
      (params.uuid || this.props.uuid) + '/' +
      encodeURIComponent(params.collectionPath || this.props.collectionPath) + '/' +
      (params.page || this.props.page);
    return res;
  }

  componentDidMount() {
    let { arvHost, arvToken } = this.props.app.state;
    let { uuid } = this.props;

    let select = [ 'manifest_text' ];
    let prom = makeArvadosRequest(arvHost, arvToken,
      '/arvados/v1/collections/' + uuid +
      '?select=' + encodeURIComponent(JSON.stringify(select)));
    prom = prom.then(xhr => {
      this.state.manifestReader = new WBManifestReader(xhr.response.manifest_text);
      this.prepareRows();
    });
  }

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

  prepareRows() {
    let { manifestReader } = this.state;
    let { collectionPath } = this.props;

    //path = path.split('/');
    //path = [ '.' ].concat(path);

    let listing = manifestReader.listDirectory('.' + collectionPath);

    this.setState({
      'rows': listing.map(item => (
        (item[0] === 'd') ? [
          (<a href={ this.getUrl({ 'collectionPath': collectionPath + '/' + item[1] }) }>{ item[1] }/</a>),
          'Directory',
          null,
          (<div></div>)
        ] : [
          (<a href={ this.getUrl({ 'collectionPath': collectionPath + '/' + item[1] }) }>{ item[1] }</a>),
          'File',
          filesize(item[2]),
          (<div></div>)
        ]
      ))
    });
  }

  render({ collectionPath }, { rows }) {
    return (
      <div>
        <WBBreadcrumbs items={ ('.' + collectionPath).split('/') } />

        <WBTable columns={ [ 'Name', 'Type', 'Size', 'Actions' ] }
          rows={ rows } />
      </div>
    );
  }
}

WBCollectionContent.defaultProps = {
  'collectionPath': '',
  'page': 0
};

export default WBCollectionContent;