import React from 'react';
import { observer } from 'mobx-react';
import Link from 'react-router/lib/Link';
import History from 'utils/History';

import store from './AtlasStore';

import Layout, { Title, HeaderAction } from 'components/Layout';
import AtlasPreviewLoading from 'components/AtlasPreviewLoading';
import CenteredContent from 'components/CenteredContent';
import DocumentList from 'components/DocumentList';
import Divider from 'components/Divider';

import styles from './Atlas.scss';

@observer
class Atlas extends React.Component {
  componentDidMount = () => {
    const { id } = this.props.params;
    store.fetchAtlas(id, data => {

      // Forward directly to root document
      if (data.type === 'atlas') {
        History.replace(data.navigationTree.url);
      }
    })
  }

  render() {
    const atlas = store.atlas;

    let actions;
    let title;
    let titleText;

    if (atlas) {
      actions = <HeaderAction>
          <Link to={ `/atlas/${atlas.id}/new` }>New document</Link>
        </HeaderAction>;
      title = <Title>{ atlas.name }</Title>;
      titleText = atlas.name;
    }

    return (
      <Layout
        actions={ actions }
        title={ title }
        titleText={ titleText }
      >
        <CenteredContent>
          { store.isFetching ? (
            <AtlasPreviewLoading />
          ) : (
            <div className={ styles.container }>
              <div className={ styles.atlasDetails }>
                <h2>{ atlas.name }</h2>
                <blockquote>
                  { atlas.description }
                </blockquote>
              </div>

              <Divider />

              <DocumentList documents={ atlas.recentDocuments } preview={ true } />
            </div>
          ) }
        </CenteredContent>
      </Layout>
    );
  }
}
export default Atlas;