Calendar reoccurring events

add_action( 'jet-engine/listing/calendar/before', function ( $settings, $render ) {

	$calendar_id = 'custom_calendar';

	if ( empty( $settings['_element_id'] ) || $calendar_id !== $settings['_element_id'] ) {
		return;
	}

	$posts_week_day = array();
	$date_key       = $settings['group_by_key'];

	$current_month = $render->get_current_month();

	$human_current_month = date( 'F Y', $current_month );
	$human_prev_month    = date( 'F Y', strtotime( $human_current_month . ' - 1 month' ) );
	$human_next_month    = date( 'F Y', strtotime( $human_current_month . ' + 1 month' ) );

	if ( ! empty( $render->prev_month_posts ) ) {

		foreach ( $render->prev_month_posts as $day_num => $posts ) {

			foreach ( $posts as $ind => $post ) {

				if ( ! isset( $posts_week_day[ $post->ID ] ) ) {
					$date = get_post_meta( $post->ID, $date_key, true );
					$posts_week_day[ $post->ID ] = date( 'w', $date );
				}

				$cal_week_day = date( 'w', strtotime( $day_num . ' ' . $human_prev_month ) );

				if ( $cal_week_day !== $posts_week_day[ $post->ID ] ) {
					unset( $render->prev_month_posts[ $day_num ][ $ind ] );
				}
			}

		}

	}

	if ( ! empty( $render->multiday_events ) ) {

		foreach ( $render->multiday_events as $day_num => $posts ) {

			foreach ( $posts as $ind => $post ) {

				if ( ! isset( $posts_week_day[ $post->ID ] ) ) {
					$date = get_post_meta( $post->ID, $date_key, true );
					$posts_week_day[ $post->ID ] = date( 'w', $date );
				}

				$cal_week_day = date( 'w', strtotime( $day_num . ' ' . $human_current_month ) );

				if ( $cal_week_day !== $posts_week_day[ $post->ID ] ) {
					unset( $render->multiday_events[ $day_num ][ $ind ] );
				}
			}

		}

	}

	if ( ! empty( $render->next_month_posts ) ) {

		foreach ( $render->next_month_posts as $day_num => $posts ) {

			foreach ( $posts as $ind => $post ) {

				if ( ! isset( $posts_week_day[ $post->ID ] ) ) {
					$date = get_post_meta( $post->ID, $date_key, true );
					$posts_week_day[ $post->ID ] = date( 'w', $date );
				}

				$cal_week_day = date( 'w', strtotime( $day_num . ' ' . $human_next_month ) );

				if ( $cal_week_day !== $posts_week_day[ $post->ID ] ) {
					unset( $render->next_month_posts[ $day_num ][ $ind ] );
				}
			}

		}

	}


}, 10, 2 );