Allows syncing the renewal dates from multiple WooCommerce subscriptions into multiple custom fields

wpf-sync-multiple-subscription-renewal-dates.php

<?php

function wpf_subscription_products_meta_fields( $fields ) {

	if ( ! class_exists( 'WC_Subscriptions_Product' ) ) {
		return;
	}

	$args = array(
		'post_type' => 'product',
		'nopaging'  => true
	);

	$products = get_posts( $args );

	foreach ( $products as $product ) {

		if ( WC_Subscriptions_Product::is_subscription( $product ) ) {

			$fields['sub_renewal_date_' . $product->ID] = array( 'label' => 'Renewal Date - ' . $product->post_title, 'type' => 'date', 'group' => 'woocommerce_subs' );
			$fields['sub_status_' . $product->ID]       = array( 'label' => 'Status - ' . $product->post_title, 'type' => 'text', 'group' => 'woocommerce_subs' );
			$fields['sub_start_' . $product->ID]        = array( 'label' => 'Start Date - ' . $product->post_title, 'type' => 'date', 'group' => 'woocommerce_subs' );

		}

	}

	return $fields;

}


add_filter( 'wpf_meta_fields', 'wpf_subscription_products_meta_fields' );

// Sync the renewal dates when a subscription status is updated.

function sync_subscription_renewal_dates( $update_data, $subscription ) {

	foreach ( $subscription->get_items() as $line_item ) {

		$product_id = $line_item->get_product_id();

		$update_data[ 'sub_renewal_date_' . $product_id ] = $subscription->get_date( 'next_payment' );
		$update_data[ 'sub_status_' . $product_id ]       = $subscription->get_status();
		$update_data[ 'sub_start_' . $product_id ]        = $subscription->get_date( 'date_created' );

	}

	return $update_data;

}

add_filter( 'wpf_woocommerce_subscription_sync_fields', 'sync_subscription_renewal_dates', 10, 2 );

thx so much!