<?php

defined('ABSPATH') or exit('Please don&rsquo;t call the plugin directly. Thanks :)');

add_filter('seopress_gtag_before_closing_script', 'seopress_pro_ga4_send_purchases');
function seopress_pro_ga4_send_purchases($ga4_js) {
    if (is_plugin_active('woocommerce/woocommerce.php')) {
        // Measure Purchases
        $purchasesOptions = seopress_get_service('GoogleAnalyticsOption')->getPurchases();
        if (!$purchasesOptions) {
            return;
        }

        if (function_exists('is_order_received_page') && is_order_received_page()) {
            global $wp;
            $order_id = isset($wp->query_vars['order-received']) ? $wp->query_vars['order-received'] : 0;

            if (0 < $order_id && 1 != get_post_meta($order_id, '_seopress_ga_tracked', true)) {
                $order = wc_get_order($order_id);

                //Check it's a real order
                if (is_bool($order)) {
                    return;
                }

                //Check order status
                $status = ['completed', 'processing'];
                $status = apply_filters('seopress_gtag_ec_status', $status);

                if (method_exists($order, 'get_status') && (in_array($order->get_status(), $status))) {
                    $items_purchased = [];
                    foreach ($order->get_items() as $item) {
                        // Get Product object
                        $_product = wc_get_product($item->get_product_id());

                        if ( ! is_a($_product, 'WC_Product')) {
                            continue;
                        }

                        // init vars
                        $item_id        = $_product->get_sku() ? $_product->get_sku() : $_product->get_id();
                        $variation_id   = 0;
                        $variation_data = null;
                        $categories_js  = null;
                        $categories_out = [];
                        $variant_js     = null;

                        // Set data
                        $items_purchased['item_id']       = esc_js($item_id);
                        $items_purchased['item_name']     = esc_js($item->get_name());
                        $items_purchased['quantity'] = (float) esc_js($item->get_quantity());
                        $items_purchased['price']    = (float) esc_js($order->get_item_total($item));

                        // Categories and Variations
                        $categories = get_the_terms($item_id, 'product_cat');
                        if ($item->get_variation_id()) {
                            $variation_id   = $item->get_variation_id();
                            $variation_data = wc_get_product_variation_attributes($variation_id);
                        }

                        // Variations
                        if (is_array($variation_data) && ! empty($variation_data)) {
                            $variant_js = esc_js(wc_get_formatted_variation($variation_data, true));
                            $categories = get_the_terms($item_id, 'product_cat');
                            $item_id    = $variation_id;

                            $items_purchased['variant'] = esc_js($variant_js);
                        }

                        $items_purchased = array_merge($items_purchased, seopress_get_service('WooCommerceAnalyticsService')->getProductCategories($_product));


                        $final[] = $items_purchased;
                    }

                    $global_purchase = [
                        'transaction_id' => esc_js($order_id),
                        'affiliation'    => esc_js(get_bloginfo('name')),
                        'value'          => (float) esc_js($order->get_total()),
                        'currency'       => esc_js($order->get_currency()),
                        'tax'            => (float) esc_js($order->get_total_tax()),
                        'shipping'       => (float) esc_js($order->get_shipping_total()),
                        'items'          => $final,
                    ];

                    $seopress_google_analytics_click_event['purchase_tracking'] = 'gtag(\'event\', \'purchase\',';
                    $seopress_google_analytics_click_event['purchase_tracking'] .= wp_json_encode($global_purchase);
                    $seopress_google_analytics_click_event['purchase_tracking'] .= ');';
                    $seopress_google_analytics_click_event['purchase_tracking'] = apply_filters('seopress_gtag_ec_purchases_ev', $seopress_google_analytics_click_event['purchase_tracking']);

                    update_post_meta($order_id, '_seopress_ga_tracked', true);

                    $ga4_js = $seopress_google_analytics_click_event['purchase_tracking'];

                    return $ga4_js;
                }
            }
        }
    }
}
