GC_Community_Events::trim_events()

	protected function trim_events( array $events ) {
		$future_events = array();

		foreach ( $events as $event ) {
			/*
			 * The API's `date` and `end_date` fields are in the _event's_ local timezone, but UTC is needed so
			 * it can be converted to the _user's_ local time.
			 */
			$end_time = (int) $event['end_unix_timestamp'];

			if ( time() < $end_time ) {
				array_push( $future_events, $event );
			}
		}

		$future_wordcamps = array_filter(
			$future_events,
			function( $wordcamp ) {
				return 'wordcamp' === $wordcamp['type'];
			}
		);

		$future_wordcamps    = array_values( $future_wordcamps ); // Remove gaps in indices.
		$trimmed_events      = array_slice( $future_events, 0, 3 );
		$trimmed_event_types = gc_list_pluck( $trimmed_events, 'type' );

		// Make sure the soonest upcoming WordCamp is pinned in the list.
		if ( $future_wordcamps && ! in_array( 'wordcamp', $trimmed_event_types, true ) ) {
			array_pop( $trimmed_events );
			array_push( $trimmed_events, $future_wordcamps[0] );
		}

		return $trimmed_events;
	}