Add "MerchantReturnPolicy" and "deliveryTime" to each product offer for the automatic product schema with SEOPress PRO

automatic-product-schema-seopress-pro.php

<?php
//Add "MerchantReturnPolicy" and "deliveryTime" to each product offer (simple and variable) for the automatic product schema with SEOPress PRO
add_filter('seopress_schemas_auto_product_json', 'sp_schemas_auto_product_json');
function sp_schemas_auto_product_json($json) {
    // Returns schema as an array with 'property' => 'value'

    // Check if 'offers' exists in the JSON
    if (!isset($json['offers'])) {
        return $json;
    }

    // Get the product offers
    $offers = $json['offers'];

    // Ensure $offers is an array of offers
    if (!is_array($offers) || array_keys($offers) !== range(0, count($offers) - 1)) {
        $offers = [$offers];
    }

    // Add sub-type MerchantReturnPolicy and deliveryTime to each offer
    if (!empty($offers)) {
        foreach ($offers as $key => $offer) {
            //hasMerchantReturnPolicy
            $offers[$key]['hasMerchantReturnPolicy'] = [
                '@type' => 'MerchantReturnPolicy',
                'applicableCountry' => 'FR',
                'returnPolicyCategory' => 'https://schema.org/MerchantReturnFiniteReturnWindow',
                'merchantReturnDays' => 120,
                'returnMethod' => 'https://schema.org/ReturnByMail',
                'returnFees' => 'https://schema.org/FreeReturn'
            ];

            // Check if 'shippingDetails' is present in the offer
            if (isset($offer['shippingDetails'])) {
                // Iterate through shipping details and add 'deliveryTime'
                foreach ($offer['shippingDetails'] as $k => $shippingDetail) {
                    $offers[$key]['shippingDetails'][$k]['deliveryTime'] = [
                        '@type' => 'ShippingDeliveryTime',
                        'handlingTime' => [
                            '@type' => 'QuantitativeValue',
                            'minValue' => 0,
                            'maxValue' => 1,
                            'unitCode' => 'DAY'
                        ],
                        'transitTime' => [
                            '@type' => 'QuantitativeValue',
                            'minValue' => 1,
                            'maxValue' => 5,
                            'unitCode' => 'DAY'
                        ]
                    ];
                }
            }
        }
    }

    // Update the original JSON with modified offers
    $json['offers'] = $offers;

    return $json;
}