add_filter( "rank_math/snippet/rich_snippet_product_entity", function( $entity ) {

	// First, check if 'offers' data exists to avoid errors
	if ( ! isset( $entity['offers'] ) ) {
		return $entity;
	}

	// --- 1. Return Policy ---
	$entity['offers']['hasMerchantReturnPolicy']['@type'] = 'MerchantReturnPolicy';
	// Country code for Iran
	$entity['offers']['hasMerchantReturnPolicy']['applicableCountry'] = 'IR';
	// Policy type: Finite return window
	$entity['offers']['hasMerchantReturnPolicy']['returnPolicyCategory'] = 'https://schema.org/MerchantReturnFiniteReturnWindow';
	// 7 days return (based on your input)
	$entity['offers']['hasMerchantReturnPolicy']['merchantReturnDays'] = 7;
	// Standard return method (e.g., by mail/post)
	$entity['offers']['hasMerchantReturnPolicy']['returnMethod'] = 'https://schema.org/ReturnByMail';
	// Free return (based on your input)
	$entity['offers']['hasMerchantReturnPolicy']['returnFees'] = 'https://schema.org/FreeReturn';

	// --- 2. Shipping Details ---
	$entity['offers']['shippingDetails']['@type'] = 'OfferShippingDetails';
	$entity['offers']['shippingDetails']['shippingRate']['@type'] = 'MonetaryAmount';
	// Free shipping (based on your input)
	$entity['offers']['shippingDetails']['shippingRate']['value'] = 0;
	// Currency: Iran Rial (based on your input)
	$entity['offers']['shippingDetails']['shippingRate']['currency'] = 'IRR';
	$entity['offers']['shippingDetails']['shippingDestination']['@type'] = 'DefinedRegion';
	// Country code for Iran
	$entity['offers']['shippingDetails']['shippingDestination']['addressCountry'] = 'IR';

	return $entity;
});