import React from 'react';
import { connect } from 'react-redux';
import PropTypes from 'prop-types';
import ImmutablePropTypes from 'react-immutable-proptypes';
import StatusListContainer from '../../ui/containers/status_list_container';
import Column from '../../../components/column';
import { FormattedMessage, injectIntl, defineMessages } from 'react-intl';
import { connectGroupStream } from '../../../actions/streaming';
import { expandGroupTimeline } from '../../../actions/timelines';
import MissingIndicator from '../../../components/missing_indicator';
import LoadingIndicator from '../../../components/loading_indicator';
import ComposeFormContainer from '../../../../gabsocial/features/compose/containers/compose_form_container';
import { me } from 'gabsocial/initial_state';
import Avatar from '../../../components/avatar';
import { Link } from 'react-router-dom';
import classNames from 'classnames';

const messages = defineMessages({
  tabLatest: { id: 'group.timeline.tab_latest', defaultMessage: 'Latest' },
});

const mapStateToProps = (state, props) => ({
	account: state.getIn(['accounts', me]),
	group: state.getIn(['groups', props.params.id]),
	relationships: state.getIn(['group_relationships', props.params.id]),
	hasUnread: state.getIn(['timelines', `group:${props.params.id}`, 'unread']) > 0,
});

export default @connect(mapStateToProps)
@injectIntl
class GroupTimeline extends React.PureComponent {
	static contextTypes = {
		router: PropTypes.object,
	};

	static propTypes = {
		params: PropTypes.object.isRequired,
		dispatch: PropTypes.func.isRequired,
		columnId: PropTypes.string,
		hasUnread: PropTypes.bool,
		group: PropTypes.oneOfType([ImmutablePropTypes.map, PropTypes.bool]),
		relationships: ImmutablePropTypes.map,
		account: ImmutablePropTypes.map,
		intl: PropTypes.object.isRequired,
	};

	componentDidMount () {
		const { dispatch } = this.props;
		const { id } = this.props.params;

		dispatch(expandGroupTimeline(id));

		this.disconnect = dispatch(connectGroupStream(id));
	}

	componentWillUnmount () {
		if (this.disconnect) {
			this.disconnect();
			this.disconnect = null;
		}
	}

	handleLoadMore = maxId => {
		const { id } = this.props.params;
		this.props.dispatch(expandGroupTimeline(id, { maxId }));
	}

	render () {
		const { columnId, group, relationships, account, intl } = this.props;
		const { id } = this.props.params;

		if (typeof group === 'undefined' || !relationships) {
			return (
				<Column>
					<LoadingIndicator />
				</Column>
			);
		} else if (group === false) {
			return (
				<Column>
					<MissingIndicator />
				</Column>
			);
		}

		return (
			<div>
				{relationships.get('member') && (
					<div className='timeline-compose-block'>
						<div className='timeline-compose-block__avatar'>
							<Avatar account={account} size={46} />
						</div>
						<ComposeFormContainer group={group} shouldCondense={true} autoFocus={false}/>
					</div>
				)}

				<div className='group__feed'>
					<div className="column-header__wrapper">
						<h1 className="column-header">
							<Link to={`/groups/${id}`} className={classNames('btn grouped active')}>
								{intl.formatMessage(messages.tabLatest)}
							</Link>
						</h1>
					</div>

					<StatusListContainer
						alwaysPrepend
						scrollKey={`group_timeline-${columnId}`}
						timelineId={`group:${id}`}
						onLoadMore={this.handleLoadMore}
						group={group}
						withGroupAdmin={relationships && relationships.get('admin')}
						emptyMessage={<FormattedMessage id='empty_column.group' defaultMessage='There is nothing in this group yet. When members of this group post new statuses, they will appear here.' />}
					/>
				</div>
			</div>
		);
	}
}