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puyopuyotetr.is/app/javascript/flavours/glitch/features/home_timeline/index.jsx

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import PropTypes from 'prop-types';
import { PureComponent } from 'react';
import { defineMessages, injectIntl, FormattedMessage } from 'react-intl';
import classNames from 'classnames';
import { Helmet } from 'react-helmet';
import { List as ImmutableList } from 'immutable';
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import { connect } from 'react-redux';
import { createSelector } from 'reselect';
import { fetchAnnouncements, toggleShowAnnouncements } from 'flavours/glitch/actions/announcements';
import { addColumn, removeColumn, moveColumn } from 'flavours/glitch/actions/columns';
import { expandHomeTimeline } from 'flavours/glitch/actions/timelines';
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import Column from 'flavours/glitch/components/column';
import ColumnHeader from 'flavours/glitch/components/column_header';
import { IconWithBadge } from 'flavours/glitch/components/icon_with_badge';
import { NotSignedInIndicator } from 'flavours/glitch/components/not_signed_in_indicator';
import AnnouncementsContainer from 'flavours/glitch/features/getting_started/containers/announcements_container';
import StatusListContainer from 'flavours/glitch/features/ui/containers/status_list_container';
import { ExplorePrompt } from './components/explore_prompt';
import ColumnSettingsContainer from './containers/column_settings_container';
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const messages = defineMessages({
title: { id: 'column.home', defaultMessage: 'Home' },
show_announcements: { id: 'home.show_announcements', defaultMessage: 'Show announcements' },
hide_announcements: { id: 'home.hide_announcements', defaultMessage: 'Hide announcements' },
});
const getHomeFeedSpeed = createSelector([
state => state.getIn(['timelines', 'home', 'items'], ImmutableList()),
state => state.get('statuses'),
], (statusIds, statusMap) => {
const statuses = statusIds.take(20).map(id => statusMap.get(id));
const uniqueAccountIds = (new Set(statuses.map(status => status.get('account')).toArray())).size;
const oldest = new Date(statuses.getIn([statuses.size - 1, 'created_at'], 0));
const newest = new Date(statuses.getIn([0, 'created_at'], 0));
const averageGap = (newest - oldest) / (1000 * (statuses.size + 1)); // Average gap between posts on first page in seconds
return {
unique: uniqueAccountIds,
gap: averageGap,
newest,
};
});
const homeTooSlow = createSelector(getHomeFeedSpeed, speed =>
speed.unique < 5 // If there are fewer than 5 different accounts visible
|| speed.gap > (30 * 60) // If the average gap between posts is more than 20 minutes
|| (Date.now() - speed.newest) > (1000 * 3600) // If the most recent post is from over an hour ago
);
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const mapStateToProps = state => ({
hasUnread: state.getIn(['timelines', 'home', 'unread']) > 0,
isPartial: state.getIn(['timelines', 'home', 'isPartial']),
hasAnnouncements: !state.getIn(['announcements', 'items']).isEmpty(),
unreadAnnouncements: state.getIn(['announcements', 'items']).count(item => !item.get('read')),
showAnnouncements: state.getIn(['announcements', 'show']),
tooSlow: homeTooSlow(state),
regex: state.getIn(['settings', 'home', 'regex', 'body']),
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});
class HomeTimeline extends PureComponent {
static contextTypes = {
identity: PropTypes.object,
};
static propTypes = {
dispatch: PropTypes.func.isRequired,
intl: PropTypes.object.isRequired,
hasUnread: PropTypes.bool,
isPartial: PropTypes.bool,
columnId: PropTypes.string,
multiColumn: PropTypes.bool,
hasAnnouncements: PropTypes.bool,
unreadAnnouncements: PropTypes.number,
showAnnouncements: PropTypes.bool,
tooSlow: PropTypes.bool,
regex: PropTypes.string,
};
handlePin = () => {
const { columnId, dispatch } = this.props;
if (columnId) {
dispatch(removeColumn(columnId));
} else {
dispatch(addColumn('HOME', {}));
}
};
handleMove = (dir) => {
const { columnId, dispatch } = this.props;
dispatch(moveColumn(columnId, dir));
};
handleHeaderClick = () => {
this.column.scrollTop();
};
setRef = c => {
this.column = c;
};
handleLoadMore = maxId => {
this.props.dispatch(expandHomeTimeline({ maxId }));
};
componentDidMount () {
setTimeout(() => this.props.dispatch(fetchAnnouncements()), 700);
this._checkIfReloadNeeded(false, this.props.isPartial);
}
componentDidUpdate (prevProps) {
this._checkIfReloadNeeded(prevProps.isPartial, this.props.isPartial);
}
componentWillUnmount () {
this._stopPolling();
}
_checkIfReloadNeeded (wasPartial, isPartial) {
const { dispatch } = this.props;
if (wasPartial === isPartial) {
return;
} else if (!wasPartial && isPartial) {
this.polling = setInterval(() => {
dispatch(expandHomeTimeline());
}, 3000);
} else if (wasPartial && !isPartial) {
this._stopPolling();
}
}
_stopPolling () {
if (this.polling) {
clearInterval(this.polling);
this.polling = null;
}
}
handleToggleAnnouncementsClick = (e) => {
e.stopPropagation();
this.props.dispatch(toggleShowAnnouncements());
};
render () {
const { intl, hasUnread, columnId, multiColumn, tooSlow, hasAnnouncements, unreadAnnouncements, showAnnouncements } = this.props;
const pinned = !!columnId;
const { signedIn } = this.context.identity;
let announcementsButton, banner;
if (hasAnnouncements) {
announcementsButton = (
<button
className={classNames('column-header__button', { 'active': showAnnouncements })}
title={intl.formatMessage(showAnnouncements ? messages.hide_announcements : messages.show_announcements)}
aria-label={intl.formatMessage(showAnnouncements ? messages.hide_announcements : messages.show_announcements)}
onClick={this.handleToggleAnnouncementsClick}
>
<IconWithBadge id='bullhorn' count={unreadAnnouncements} />
</button>
);
}
if (tooSlow) {
banner = <ExplorePrompt />;
}
return (
<Column bindToDocument={!multiColumn} ref={this.setRef} name='home' label={intl.formatMessage(messages.title)}>
<ColumnHeader
icon='home'
active={hasUnread}
title={intl.formatMessage(messages.title)}
onPin={this.handlePin}
onMove={this.handleMove}
onClick={this.handleHeaderClick}
pinned={pinned}
multiColumn={multiColumn}
extraButton={announcementsButton}
appendContent={hasAnnouncements && showAnnouncements && <AnnouncementsContainer />}
>
<ColumnSettingsContainer />
</ColumnHeader>
{signedIn ? (
<StatusListContainer
prepend={banner}
alwaysPrepend
trackScroll={!pinned}
scrollKey={`home_timeline-${columnId}`}
onLoadMore={this.handleLoadMore}
timelineId='home'
emptyMessage={<FormattedMessage id='empty_column.home' defaultMessage='Your home timeline is empty! Follow more people to fill it up.' />}
bindToDocument={!multiColumn}
regex={this.props.regex}
/>
) : <NotSignedInIndicator />}
<Helmet>
<title>{intl.formatMessage(messages.title)}</title>
<meta name='robots' content='noindex' />
</Helmet>
</Column>
);
}
}
export default connect(mapStateToProps)(injectIntl(HomeTimeline));