import React, { PropTypes } from 'react';
import { observer } from 'mobx-react';
import { browserHistory } from 'react-router';
import keydown from 'react-keydown';
import ReactCSSTransitionGroup from 'react-addons-css-transition-group';
import _ from 'lodash';

import store from './AtlasStore';

import Layout, { Title } from 'components/Layout';
import AtlasPreviewLoading from 'components/AtlasPreviewLoading';
import CenteredContent from 'components/CenteredContent';
import DocumentList from 'components/DocumentList';
import Divider from 'components/Divider';
import DropdownMenu, { MenuItem, MoreIcon } from 'components/DropdownMenu';
import { Flex } from 'reflexbox';

import styles from './Atlas.scss';

@keydown(['c'])
@observer
class Atlas extends React.Component {
  static propTypes = {
    params: PropTypes.object.isRequired,
  };

  componentDidMount = () => {
    const { id } = this.props.params;
    store.fetchCollection(id, data => {
      // Forward directly to root document
      if (data.type === 'atlas') {
        browserHistory.replace(data.navigationTree.url);
      }
    });
  };

  componentWillReceiveProps = nextProps => {
    const key = nextProps.keydown.event;
    if (key) {
      if (key.key === 'c') {
        _.defer(this.onCreate);
      }
    }
  };

  onCreate = event => {
    if (event) event.preventDefault();
    browserHistory.push(`${store.collection.url}/new`);
  };

  render() {
    const collection = store.collection;

    let actions;
    let title;
    let titleText;

    if (collection) {
      actions = (
        <Flex>
          <DropdownMenu label={<MoreIcon />}>
            <MenuItem onClick={this.onCreate}>
              New document
            </MenuItem>
          </DropdownMenu>
        </Flex>
      );
      title = <Title>{collection.name}</Title>;
      titleText = collection.name;
    }

    return (
      <Layout actions={actions} title={title} titleText={titleText}>
        <CenteredContent>
          <ReactCSSTransitionGroup
            transitionName="fadeIn"
            transitionAppear
            transitionAppearTimeout={0}
            transitionEnterTimeout={0}
            transitionLeaveTimeout={0}
          >
            {store.isFetching
              ? <AtlasPreviewLoading />
              : <div className={styles.container}>
                  <div className={styles.atlasDetails}>
                    <h2>{collection.name}</h2>
                    <blockquote>
                      {collection.description}
                    </blockquote>
                  </div>

                  <Divider />

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