Output EDD Schema on Another Page Using edd_structured_data shortcode

edd-schema-shortcode.php

<?php
/**
 * Plugin Name: DLX EDD Output Schema Download
 * Description: Outputs the structured data for a download.
 * Version: 1.0.0
 * Author: Ronald Huereca
 * Author URI: https://dlxplugins.com
 * Text Domain: dlx-edd-output-schema-download
 * Domain Path: /languages
 */

if ( ! defined( 'ABSPATH' ) ) {
	exit;
}

/**
 * Example Usage:
 * [edd_structured_data id="123"]
 */
add_shortcode(
	'edd_structured_data',
	function ( $atts ) {
		$atts = shortcode_atts( [
			'id' => 0,
		], $atts );

		$download_id = absint( $atts['id'] );
		if ( ! $download_id || ! class_exists( 'Easy_Digital_Downloads' ) ) {
			return '';
		}

		$edd = \Easy_Digital_Downloads::instance();

		$current_post_id = get_the_ID();

		ob_start();
		$filter_callback = function ( $data, $download ) use ( $current_post_id ) {
			$data['url'] = get_permalink( $current_post_id );
			return $data;
		};
		
		add_filter( 'edd_generate_download_structured_data', $filter_callback, 10, 2 );
		
		// Generate the schema
		$edd->structured_data->generate_download_data( $download_id );
		$edd->structured_data->output_structured_data();
		
		remove_filter( 'edd_generate_download_structured_data', $filter_callback, 10, 2 );

		return ob_get_clean();
	}
);