JetEngine Get purchased Woocommerce products macro

purchased-products-macro.php

<?php

add_action( 'jet-engine/register-macros', function() { 

	/**
	 * Return purchased products IDs.
	 */
	class Purchased_Products_Macro extends \Jet_Engine_Base_Macros {

		public function macros_tag() {
			return 'purchased_products';
		}

		public function macros_name() {
			return esc_html__( 'Purchased products', 'jet-engine' );
		}

		public function macros_args() {
			return array();
		}

		public function macros_callback( $args = array() ) {
			
			/**
			 * It's better to do it separately to avoid performing unnecessary functions, even if they are not significant.
			 * If you know what you're using this code for, you don't need to use this check.
			 */
			if ( ! function_exists( 'WC' ) ) {
				return;
			}

			$user_id = get_current_user_id();
			
			if ( ! $user_id ) {
				return;
			}

			$orders = wc_get_orders( array(
				'customer_id' => $user_id,
				'limit'     => -1,
				'status' => array_keys( wc_get_is_paid_statuses() ), // Using a more universal way to obtain order statuses. Get list of statuses which are consider 'paid'.
			) );
			
			// It is mandatory to check for orders; if there are no orders, further actions are pointless.
			if ( ! $orders ) {
				return;
			}

			$products_ids = array();

			foreach ( $orders as $order ) {
				$items = $order->get_items();

				foreach ( $items as $item ) {
					$products_ids[] = $item->get_product_id(); // There is a special method for obtaining the product identifier in an order.
				}

			}
			
			// Remove duplicates in the array. Since the same products are possible in different orders.
			$product_ids = array_unique( $product_ids );

			return implode( ',', $product_ids );
		}
	}
	
	new Purchased_Products_Macro();  
	
} );