Add Merchant fields to WooCommerce offers

snip-woocommerce-offers-merchants.php

<?php
/*
Plugin Name: SNIP WooCommerce Offers Merchants
Description: Adds new fields for merchants in the WooCommerce Offers schema.
Author: Florian Simeth
Version: 0.1.0
Author URI: https://rich-snippets.io
Plugin URI: https://rich-snippets.io/add-merchant-fields-to-woocommerce-offers/
*/


namespace snip\woocommerce\merchantext;

if ( ! defined( 'ABSPATH' ) ) {
	exit;
} // Exit if accessed directly


add_filter( 'wpbuddy/rich_snippets/fields/internal_subselect/values', '\snip\woocommerce\merchantext\subselects' );

/**
 * Adds new field to use in Global Snippets in the SNIP plugin.
 *
 * @param array $values
 *
 * @return array
 * @since 0.1.0
 *
 */
function subselects( $values ) {

	$values['http://schema.org/Offer'][] = [
		'id'     => 'woocommerce_offers_merchant',
		'label'  => esc_html_x( 'WooCommerce Offers with Merchant data', 'subselect field', 'snip-fte' ),
		'method' => '\snip\woocommerce\merchantext\offers_with_merchant',
	];

	return $values;
}

/**
 * Returns the value.
 *
 * @param                                     $val
 * @param \wpbuddy\rich_snippets\Rich_Snippet $rich_snippet
 * @param array $meta_info
 *
 * @return object
 */
function offers_with_merchant( $val, \wpbuddy\rich_snippets\Rich_Snippet $rich_snippet, array $meta_info ) {
	$offers = \wpbuddy\rich_snippets\pro\WooCommerce_Model::offers( $val, $rich_snippet, $meta_info );

	$offers->hasMerchantReturnPolicy                       = new \stdClass();
	$offers->hasMerchantReturnPolicy->type                 = 'MerchantReturnPolicy';
	$offers->hasMerchantReturnPolicy->merchantReturnDays   = 30;
	$offers->hasMerchantReturnPolicy->applicableCountry    = 'US';
	$offers->hasMerchantReturnPolicy->returnPolicyCategory = 'https://schema.org/MerchantReturnFiniteReturnWindow';
	$offers->hasMerchantReturnPolicy->returnMethod         = 'https://schema.org/ReturnByMail';
	$offers->hasMerchantReturnPolicy->returnFees           = 'https://schema.org/FreeReturn';

	$offers->shippingDetails                                      = new \stdClass();
	$offers->shippingDetails->type                                = 'OfferShippingDetails';
	$offers->shippingDetails->shippingRate                        = new \stdClass();
	$offers->shippingDetails->shippingRate->type                  = 'MonetaryAmount';
	$offers->shippingDetails->shippingRate->currency              = 'USD';
	$offers->shippingDetails->shippingRate->value                 = 0;
	$offers->shippingDetails->shippingDestination                 = new \stdClass();
	$offers->shippingDetails->shippingDestination->type           = 'DefinedRegion';
	$offers->shippingDetails->shippingDestination->addressCountry = 'US';

	return $offers;
}