Add or Remove Addon Package access based on WooCommerce purchased products.

pmpro-addon-packages-woocommerce.php

<?php
/**
 * Integrate Addon Packages with WooCommerce product purchased (based on the order status).
 * Recommended to be used with PMPro WooCommerce to apply a default level for all products that give access to posts (Addon Packages).
 *
 * To get started, please adjust the $product_ids_to_posts global array which uses a product_id => post_id key/value pair.
 * Extend this array for all products that will give access to posts.
 *
 * Adds access to the post once the order is completed.
 * Removes access from the post if the order is set to cancelled, failed or refunded.
 *
 * 
 * You can add this recipe to your site by creating a custom plugin
 * or using the Code Snippets plugin available for free in the WordPress repository.
 * Read this companion article for step-by-step directions on either method.
 * https://www.paidmembershipspro.com/create-a-plugin-for-pmpro-customizations/
 */
global $product_ids_to_posts;

$product_ids_to_posts = array(
	'63' => '217', // Product ID 63 gives access to post ID 217.
);

/**
 * Assign access via Addon Packages when WooCommerce order completes.
 * @param int $order_id The WooCommerce order ID available when changing order's status.
 */
function my_pmproap_for_woo_add( $order_id ) {
	global $product_ids_to_posts;

	if ( ! function_exists( 'pmproap_addMemberToPost' ) ) {
		return;
	}

	$order   = new WC_Order( $order_id );
	$user_id = $order->get_user_id();

	if ( ! empty( $user_id ) && sizeof( $order->get_items() > 0 ) ) {
		foreach ( $order->get_items() as $item ) {
			if ( ! empty( $item['product_id'] ) ) {
				if ( ! empty( $product_ids_to_posts[ $item['product_id'] ] ) ) {
					pmproap_addMemberToPost( $user_id, $product_ids_to_posts[ $item['product_id'] ] );
				}
			}
		}
	}

}
add_action( 'woocommerce_order_status_completed', 'my_pmproap_for_woo_add', 20, 1 );

/**
 * Remove access via Addon Packages when WooCommerce order status is failed, cancelled or refunded.
 * @param int $order_id The WooCommerce order ID available when changing order's status.
 */
function my_pmproap_for_woo_remove( $order_id ) {
	global $product_ids_to_posts;

	if ( ! function_exists( 'pmproap_addMemberToPost' ) ) {
		return;
	}

	$order   = new WC_Order( $order_id );
	$user_id = $order->get_user_id();

	if ( ! empty( $user_id ) && sizeof( $order->get_items() > 0 ) ) {
		foreach ( $order->get_items() as $item ) {
			if ( ! empty( $item['product_id'] ) ) {
				if ( ! empty( $product_ids_to_posts[ $item['product_id'] ] ) ) {
					pmproap_removeMemberFromPost( $user_id, $product_ids_to_posts[ $item['product_id'] ] );
				}
			}
		}
	}
}
add_action( 'woocommerce_order_status_refunded', 'my_pmproap_for_woo_remove' );
add_action( 'woocommerce_order_status_failed', 'my_pmproap_for_woo_remove' );
add_action( 'woocommerce_order_status_cancelled', 'my_pmproap_for_woo_remove' );